I-Snowmobile Thin Ice Breakthrough kanye ne-Avalanche Airbag Safety¶

Ukugibela inqola yeqhwa unqamula indawo yasebusika ebuyela emuva kukuchaya ezimweni eziphuthumayo ezimbili: ukubhodloza iqhwa echibini eliqandisiwe libe amanzi aqandayo, nokudangala i-avalanche ye-slab emthambekeni wentaba. Zombili lezi zimo zidinga ukusabela komzimba ngokushesha ngaphambi kokushaqeka okubandayo, i-hypothermia, noma ukungcwatshwa kweqhwa kuvimbele ukusinda.

Yenza lokhu manje¶

Uma i-snowmobile yakho igqekeza eqhweni ibe amanzi aqandayo:

1. Lahla umshini ngokushesha. Vumela imoto yeqhwa izike. Ungalokothi uzame ukuqondisa noma ukonga umshini weqhwa ozikayo wamakhilogremu angu-250 (amaphawundi angu-550).
2. Lawula ukuphefumula kwakho. Ukushaqeka okubandayo kubangela i-gasp reflex ethatha imizuzwana engama-60. Gcina umlomo wakho uvaliwe ngaphezu kwamanzi futhi uphoqelele ukukhipha umoya kancane.
3. Jikela emuva ubheke lapho oze ngakhona. Iqhwa elingemuva kwakho lisekele umshini wakho ngaphambi kwesikhathi. Yiqhwa elinamandla kunawo wonke atholakalayo.
4. Faka okokukhetha kwakho kweqhwa. Bamba ama-ice awl afakwa entanyeni yakho. Tshala izikhonkwane zensimbi ngokuqinile endaweni yeqhwa.
5. Khahlela imilenze yakho ivundlile. I-Flutter ikhahlela imilenze yakho ngamandla ukuze ilethe umzimba wakho ongezansi endaweni yamanzi, yehlisa isisindo sokudonsa.
6. Donsa bese ugingqika eshalofini leqhwa. Donsa izingalo zakho ngenkathi ukhahlela. Slayida isifuba sakho eqhweni, khasa uye phambili ngesisu sakho, bese uginqika uye usuke embobeni.

Uma uqala noma uhlangabezana ne-avalanche emthambekeni wentaba:

1. Donsa i-avalanche airbag trigger yakho ngokushesha. Bamba isibambo ebhandeni lakho lasehlombe bese wehlela phansi ngokuqinile ophawini lokuqala lokuqhekeka kweqhwa.
2. Lahla inqola yeqhwa ukuze ugweme ukuphina. Ziphushe umqansi noma emaceleni usuke kumabhodi agijimayo. Imoto yeqhwa ewayo ingakuchoboza noma ikudonsele ngaphansi.
3. Yilwa ukuze uhlale phezu kwemfucumfucu ehambayo. Sebenzisa i-backstroke enamandla noma ukubhukuda ngezingalo nemilenze ukuze ugcine ikhanda lakho lingaphezu kweqhwa.
4. Sula iphakethe lomoya ngaphambi kokuma kweqhwa. Njengoba i-avalanche iyancipha, beka ngengalo eyodwa emakhaleni nasemlonyeni wakho. Iqhwa liba njengokhonkolo phakathi nemizuzwana yokuma.
5. Phusha ingalo noma isandla phezulu. Nweba isitho esisodwa phezulu uye emoyeni ovulekile ukuze unikeze abaseshi bokutakula inhloso ebonakalayo.
6. Londoloza umoya-mpilo wakho. Uma ukunyakaza kumile, hlala uzolile futhi uphefumule kancane. Ukumemeza ngenkathi ungcwatshiwe kumosha umoya-mpilo ngaphandle uma uzwa abatakuli ngokuqondile phezulu.

I-ice breakthrough physics, i-biological cascade, kanye nemishini¶

Ukusebenzisa imoto yeqhwa phezu kwamanzi ayiqhwa kuthwala ingozi enkulu ngoba ugqinsi lweqhwa luyashintshashintsha ngaphandle kwesixwayiso esibonakalayo. Imisinga efihlekile, iziphethu ezishisayo, amagagasi okucindezela, neqhwa elivikelayo zenza buthaka izakhiwo zeqhwa. Ukuqonda i-ice physics nezigaba zokucwiliswa emanzini abandayo kunikeza isisekelo sokusinda ekuphumeleleni.

Umugqa wesikhathi wokusinda emanzini abandayo ongu-1-10-1¶

Uma imoto yeqhwa ibhoboza eqhweni, ukusinda kwakho kuncike ekubambeleleni kumugqa wesikhathi wokucwiliswa emanzini abandayo ongu-1-10-1 osungulwe ochwepheshe bomzimba wamanzi abandayo:

• Isigaba 1: Ukusabela kokushaqeka okubandayo (imizuzwana engu-60 yokuqala). Ukupholisa kwesikhumba ngokushesha kubangela ukusabela kokuphefumula okungahleliwe okulandelwa ukungenwa komoya ophezulu kakhulu. Ukuhogela amanzi ngesikhathi se-gasp reflex yokuqala kubangela ukuminza ngokushesha. Kufanele uvale umlomo wakho, ulwe nokwethuka, futhi usebenzise lo mzuzu ogcwele uqinisa ukuphefumula kwakho.
• Isigaba sesi-2: Ukungakwazi ukumelana namakhaza (imizuzu eyi-10 elandelayo). Amanzi abandayo ahambisa amandla ashisayo kude nomzimba ngokushesha izikhathi ezingama-25 kunomoya obandayo. Phakathi nemizuzu emi-5 kuya kweyi-10, i-vasoconstriction ye-peripheral ipholisa izicubu nezinzwa emaphethelweni. Amandla okubamba ehla ngamaphesenti angama-80, aqede amandla akho okubamba amakhethini eqhwa noma uzikhiphe. Ukuzihlenga kufanele kwenzeke ngaleli windi.
• Isigaba sesi-3: I-Clinical hypothermia (amahora angu-1 kuya kwangu-2). I-Hypothermia, echazwa ngokuthi izinga lokushisa eliyinhloko lehla ngaphansi kuka-35 °C (95 °F), idinga imizuzu engu-30 kuya kwengu-60 kumuntu omdala onezingubo zasebusika. Uma indlela yakho yomoya ihlala ngaphezu kwamanzi ngesudi ye-flotation, ungakwazi ukuhlala uqaphile kuze kube ihora ngisho noma isilawuli semoto sifiphala.
• Phase 4: Circum-rescue collapse. During or after extraction, sudden blood pressure drops or ventricular arrhythmias can cause cardiac arrest. Cold blood returning from extremities to the heart core triggers ventricular fibrillation. Rescuers must handle victims gently in a horizontal posture.

Snowmobile weight dynamics and ice failure mechanics¶

A modern trail snowmobile weighs between 200 kilograms (440 pounds) and 320 kilograms (705 pounds) dry. Adding fuel, cargo, and an adult rider creates a dynamic operating load between 320 kilograms (705 pounds) and 480 kilograms (1,058 pounds).

When a snowmobile travels across ice, it generates a hydrodynamic bow wave beneath the surface. If the machine travels between 15 km/h (9 mph) and 35 km/h (22 mph), underwater wave velocity matches vehicle speed. This resonance amplifies flexural stress, cracking ice that could otherwise support a stationary machine.

Ice structural types:

1. Clear blue or black ice. Formed by slow freezing of calm water. This is the strongest ice type. A minimum uniform thickness of 13 cm to 18 cm (5 to 7 inches) is required for a single snowmobile.
2. White or snow ice. Formed when snow saturates with water on top of an ice sheet and refreezes. Containing trapped air bubbles, white ice has only 50 percent of the strength of clear ice. Required thickness doubles to 26 cm to 36 cm (10 to 14 inches).
3. Slush and river ice. Ice over moving currents is eroded underneath. Invisible voids and currents make river ice up to 75 percent weaker than lake ice of equal thickness.

Gold's formula provides the standard engineering estimation for fresh, solid lake ice bearing capacity:

In this formula, \(h\) represents ice thickness in inches, \(W\) is total load in tons (2,000 pounds per ton), and \(C\) is a safety factor. For continuous snowmobile travel over ice of known quality, conservative guidelines require a safety factor \(C\) of 7 to 8, verifying that an operating load of 0.4 tons (800 pounds) demands at least 13 cm (5 inches) of clear, unbroken blue ice.

Step-by-step ice self-rescue and partner extraction¶

Falling through ice into dark, sub-zero water is disorienting. Heavy boots, snowmobile suits, and helmets feel heavy. Trapped air inside a snowmobile suit provides positive buoyancy for several minutes. Wet fabrics trap a thin boundary layer of water that retards heat loss.

Protocol 1: Individual self-rescue using ice picks¶

1. Orient your body toward the entry direction. As soon as you surface, turn 180 degrees. The ice hole edge you just crossed supported your machine moments earlier. The ice ahead is thin and unstable.
2. Deploy ice awls from your chest. Never carry ice picks inside pockets or backpacks. Wear them draped around your neck or strapped to wrists. Grasp both handles firmly.
3. Setha okokukhetha kujule eshalofini. Finyelela phambili eqhweni eliqinile. Shaya amaphuzu aye phansi ngobubanzi behlombe. Cindezela phansi udlule ku-eksisi emile yezikhonkwane kunokudonsela ngaphandle onqenqemeni lweshelufu.
4. Gcina i-swimming trim evundlile. Ungakhuphukeli uqonde njengokukhuphuka iledi yokubhukuda. Ukudonsa okuqondile kuphoqa isifuba sakho ngokumelene nodebe lweqhwa. Nweba imilenze yakho ngemuva kwakho bese u-flutter ukhahlela ngamandla.
5. Coordinate the pull with the kick. Kick hard with your boots to drive your hips to the water surface. As your torso flattens, pull your upper body forward onto the ice shelf with the awls. Slide forward like a seal onto an ice floe.
6. Maintain belly contact and roll. Once your stomach clears the ice lip, do not stand up. Keep limbs spread wide to distribute your weight. Roll sideways across the ice for at least 15 meters (50 feet) before crawling.

Protocol 2: Self-rescue without ice picks¶

Uma ubhodloza ngaphandle kwama-ice awls, ukuzihlangula kuba nzima ngoba iqhwa elimanzi linikeza cishe ukungqubuzana okuyiziro:

1. Form a supporting shelf with your arms. Rest your forearms flat on the ice. If temperatures are below -10 °C (14 °F), letting wet sleeves freeze to the ice for 30 seconds provides slight grip.
2. Khahlela ubheke emuva ngamandla. Khahlela imilenze yakho phezulu ngenkathi ucindezela ubheke phansi eqhweni ngesifuba nezingalo zakho.
3. Sebenzisa okhiye noma igiya lensimbi. Yimba okhiye, amathuluzi ephaketheni, noma amabhande ebhande eqhweni ukuze udale amaphuzu amancane okuthenga.
4. Phula iqhwa elincanyana ulibhekise ekusekeleni okuqinile. Uma udebe lweqhwa luwa, qhubeka uphula iqhwa elibuthaka ulibhekise ngasosebeni noma ithrekhi yakho yokungena uze ufike eqhweni eliqinile elibambe umzimba wakho.

Iphrothokholi 3: Ukuhlenga uzakwethu ogibele ngaphansi kwamanzi¶

Ukuhlenga umngane kunengozi enkulu. Abatakuli bavame ukusondela eduze kakhulu, bagqekeze iqhwa elisengozini, futhi babe yizisulu zesibili.

1. Gcina ibanga lokuma. Paka zonke izimoto ezihamba eqhweni ezisele okungenani amamitha angu-30 (amafidi angu-100) ukusuka. Ukudlidliza kwenjini kungabangela ukuphuka kwesibili.
2. Shayela ukuthunyelwa kwezimo eziphuthumayo ngokushesha. Xhumana nabezimo eziphuthumayo (911 e-United States nase-Canada, 112 eYurophu, 999 e-United Kingdom). Dlulisa izixhumanisi eziqondile ze-GPS kusuka kusihlibhi sakho noma isixhumi sakho sesathelayithi.
3. Sebenzisa okuthi Shumayela, Finyelela, Phonsa, Ukulandelana Kwemigqa. Ungalokothi uhambe uye emaphethelweni embobo.
   • Shumayela: Qondisa isisulu ukuthi sibhekane nendlela yaso yokungena, ukukhetha izitshalo, futhi akhahlele ngokuvundlile.
   • Finyelela: Lala uthambekele eqhweni. Nweba into eqinile njengebhande lokudonsa, igatsha lesihlahla, i-ski, noma shaft yefosholo.
   • Phonsa: Phonsa umugqa wokujikijela ontantayo noma ijakhethi yokuphila eboshwe ngebhande esifubeni somuntu ohlukunyeziwe.
   • Umugqa noma Hamba: Ukungena emanzini kuyisinyathelo sokugcina esilinganiselwe kubahlengi abaqeqeshiwe abagqoke amasudi omile nezinsimbi zokuphepha.
4. Sabalalisa isisindo sakho. Uma ukhasa uqonde kulowo ohlukunyeziwe ngesigxobo sokufinyelela, lala phansi esihlibhini sokuhlenga esiphuthumayo noma khasa une-eagle eqhweni.

Ukunakekelwa kwezimo eziphuthumayo kwangemva kokukhipha: ukuvimbela ukushona phansi¶

Ukuphuma emanzini abandayo kuyisigamu sokuqala sokusinda. Uma usuchayeke emoyeni ongaphansi kweziro, ukugodola komoya kusheshisa ukupholisa komzimba, okuholela ku-hypothermia ebulalayo phakathi namaminithi uma kwenzeka izinqubo ezingafanele zokufudumeza umzimba.

I-physiological afterdrop mechanism¶

I-Afterdrop kwenzeka lapho igazi elibandayo elivela ezicutshini ezimile emilenzeni nasezingalweni lizungeza libuyela enkabeni yomzimba ngesikhathi sokufudumeza okungafanele noma ukunyakaza okusebenzayo. Leli gazi elibandayo lehlisa izinga lokushisa eliphakathi kwenhliziyo ngokungeziwe okungu-1 °C kuya ku-3 °C (2 °F kuya ku-5 °F), kucuphe i-fibrillation ye-ventricular.

1. Gcina isiguli sivundlile futhi singanyakazi. Nciphisa ukunyakaza komzimba. Ungavumeli umgibeli osindisiwe ukuthi ahambe, ame, agijime, noma enze izivivinyo zomzimba ukuze azifudumeze. Ukufinyela kwemisipha kuphoqa igazi elibandayo le-peripheral lingene enhliziyweni.
2. Vikela emoyeni ngokushesha. Ukubanda komoya kunqamula ukushisa ngokushesha kunomoya ozolile. Yakha umhume weqhwa ngokushesha, beka indawo yokukhosela yesizini emine, noma ubeke izimoto ezihamba eqhweni njengesivunguvungu somoya somuntu ohlukunyeziwe.
3. Hlubula izingubo ezimanzi kancane ngenkathi ukhosele. Sika izingubo uma ukuguqulwa kwamalunga kudinga ukunyakaza okunamandla. Shintsha izingqimba ezimanzi ngokushesha ngoboya obomile, uboya bezimvu, izingubo eziphansi, noma izikhwama zokulala.
4. Dala into evimbela ukuhwamuka. Goqa isisulu ngaphakathi kwesivimbeli somoya: beka ingubo yesikhala noma ithayela lepulasitiki endaweni eyomile, kulandele igobolondo le-bivy elingaphandle elivikela umoya. Lokhu kubamba amandla okushisa futhi kumise ukulahlekelwa ukushisa okuhwamukayo.
5. Faka amaphakethe afudumele, omile enkambweni kuphela. Beka amaphakethe okushisa amakhemikhali noma amabhodlela amanzi afudumele asongwe ngendwangu esifubeni, emakhwapheni, nasezinqeni. Ungalokothi usebenzise amaphakethe okushisa emilenzeni, ezingalweni, ezandleni, noma ezinyaweni. Ukufudumala amaphethelo kunweba imikhumbi eseceleni futhi kusheshise ithonsi.
6. Nikeza uketshezi olufudumele nolumnandi kuphela uma siqaphe ngokugcwele. Uma isiguli siphapheme, sigwinya ngokuvamile, futhi sikhuluma ngokuvumelana, nikeza itiye elifudumele elinoshukela noma umhluzi. Ungalokothi unikeze isiguli esiqulekile utshwala, i-caffeine, noma iziphuzo ezishisayo.

Avalanche dynamics endaweni snowmobile¶

Izinqola zeqhwa ezisezintabeni zivumela abagibeli ukuthi bakhuphuke emithambekeni eyeqisayo ephakathi kuka-30 no-45 degrees, khona kanye lapho ama-avalanche abhubhisayo adedeleka khona. Abashayeli bezimoto eqhweni bamele inani labantu abashona kakhulu ezingozini ze-avalanche yase-backcountry.

I-physics ye-snowmobile-triggered slab avalanches¶

I-avalanche ye-slab yenzeka lapho ungqimba oluhlangene lweqhwa luhlezi phezu kongqimba lwesisekelo olubuthaka, olugoqekayo njengokumnyama okungaphezulu noma ukuguquguquka okujulile. Lapho ukucindezeleka kwangaphandle kudlula amandla okugunda wengqimba ebuthakathaka, ukuphuka kuqala futhi kusakazeke ebusweni bentaba ngesivinini esingaphezu kuka-300 km/h (186 mph).

Umgibeli kanye nemoto yeqhwa yasezintabeni enamandla amakhulu inephuzu eliguquguqukayo eliphakama kakhulu kunomshushuluzi:

• Umthwalo omile: Inqola yeqhwa kanye nomgibeli ulingana no-350 kg ukuya ku-450 kg (amaphawundi angama-770 kuye kwangama-990).
• Umthwalo we-Dynamic trenching: Lapho ubaza, ukhuphuka, noma ujikela eceleni, ithrekhi ephothayo imba iqhwa lifike ku-60 cm ukuya ku-100 cm (amayintshi angu-24 ukuya kwangu-39), idlulisele ukudlidliza komshini ngokuqondile kuzingqimba ezigqitshiwe ezibuthakathaka.
• Ukucupha okukude: Ngenxa yokuthi izimoto zeqhwa zivala indawo enkulu ngokushesha, abagibeli bavame ukuvusa izendlalelo ezibuthakathaka kusukela phansi komthambeka, ukusuka emabhentshini ayisicaba angaphansi kwe-slab elengayo, noma emigwaqweni exhumene eqhele ngamamitha angamakhulu.

Amasistimu we-Avalanche airbag: mechanics kanye ne-physics¶

Ojosaka be-Avalanche airbag amasistimu okuphepha akhethekile aklanyelwe ukuvimbela ukungcwatshwa okuphelele ngesikhathi seslayidi seqhwa esinyakazayo. Ama-airbag awantanti phezu kweqhwa njengejakhethi yokuphila emanzini. Asebenza ngomgomo we-granular convection, ovame ukubizwa ngokuthi umthelela we-Brazil nut.

I-physics ye-granular convection (ukuhlukaniswa okuphambene)¶

Ku-avalanche esebenzayo, udoti onyakazayo uziphatha njengoketshezi oluyimbudumbudu. Njengoba iqhwa eliwayo liphahlazeka ekwehleni, ukuzamazama kwemishini kuhlunga izinhlayiya ngevolumu ebonakalayo:

1. Izinhlayiya zeqhwa ezincane zishelela ezikhaleni ngaphansi kwezinto ezinkulu ngesikhathi sokunyakaza.
2. Lokhu kwehla kwe-percolation kuphoqa izinto ezinkulu zibheke phezulu.
3. Isistimu ye-avalanche airbag ivuthela ibhaluni eliqinile elikhulisa umthamo ngamalitha angu-150 (5.3 cubic feet).
4. Ngokukhuphula ivolumu yomzimba ngaphandle kokwengeza isisindo esinzima, i-airbag idala udoti onyakazayo ukuze uphoqe umgibeli ukuthi aye endaweni yeqhwa.

Ukuqhathaniswa kwezinhlelo zokusatshalaliswa¶

Abagibeli be-backcountry bakhetha phakathi kobuchwepheshe obuthathu obuhlukene bokusebenzisa i-airbag: amathini egesi acindezelwe, ama-inflators e-pyrotechnic, namasistimu amafeni kagesi anesivinini esikhulu.

Iphrothokholi yokuthunyelwa kwe-Avalanche nezenzo zokusinda¶

Lapho i-avalanche iqhuma emthambekeni wentaba, ukusinda kuncike ezenzweni ezisheshayo, eziprakthiziwe. Iwindi eliphakathi kokuphuka kokuqala kanye nokungakwazi ukuhamba kahle endaweni yokuphuma ngokuvamile liyimizuzwana eyi-10 ukuya kwengama-30.

Iphrothokholi 1: Ukuthunyelwa kwe-trigger esheshayo¶

1. Donsa i-trigger kuphawu lokuqala. Uma uzwa umsindo opholile, uzwe iqhwa liwa ngaphansi kwengoma yakho, noma ubone ukuphuka kwengcindezi, donsa isibambo ngokushesha. Amaphakethe kagesi esimanje avumela ukuthunyelwa kwamahhala kokuzijwayeza ekhaya. Ungalokothi ulinde ukuze uqinisekise ukuthi isilayidi sikhulu.
2. Sebenzisa ukubamba okuya phansi okunamandla. Gqoka igilavu ​​yakho kusibambo sebhande lehlombe bese wehlela phansi ngamandla agcwele. Ungadedeli kuze kube yilapho uzwa ukuphuma kwegesi noma ifeni kagesi iqhuma.
3. Qinisekisa ukuthi i-airbag iyafutha. I-airbag kufanele ifuthe ifike ku-150 litres (5.3 cubic feet) phakathi kwamasekhondi angu-3. Ibhaluni lihlinzeka ngokuvikela ukuhlukumezeka kwekhanda nentamo yakho ngokumelene nemfucumfucu.

Iphrothokholi 2: Ukulahla umshini¶

Ama-snowmobilers e-Backcountry avame ukubhubha ngenkathi ebambe izibambo:

1. Qalisa amabhodi agijimayo. Inqola yeqhwa inesisindo esiphakathi kuka-200 kg no-320 kg (440 kuya ku-705 amaphawundi). Kumfucumfucu onyakazayo, i-chassis esindayo iyacwila futhi iwele ngamandla. Amabhuzu avalelwe akuhudulela ezingxenyeni eziphansi zokugunda, echoboza isifuba sakho.
2. Phusha umshini kude. Phusha isihlibhi ekwehleni noma emaceleni njengoba ugxuma usuka ebhodini lokugijima elikhuphukayo.
3. Yilwa ubheke ehlangothini lesilayidi. Uma uhamba ngaphesheya komthambeko, sebenzisa umfutho ukuze ugiqekele ngasemngceleni we-slab ongaphandle. Izinhlangothi ze-avalanche zinejubane eliphansi kanye nokujula kwemfucumfucu okungajulile kunesikhungo.

Iphrothokholi 3: Ukusinda ekugelezeni kwemfucumfucu ehambayo¶

1. Ukunyakaza kokubhukuda kwe-backstroke. Yilwa neqhwa elinyakazayo nge-backstroke enolaka ngenkathi ukhahlela. Lokhu kunyakaza, kuhlanganiswe ne-airbag evundliwe, kuthuthukisa ukuguquguquka kwe-granular futhi kugcina isifuba sakho siseduze nendawo.
2. Vikela indlela yakho yokuphefumula yokuphefumula. Iqhwa elifakwa emlonyeni wakho lidala ipulaki yokuminyanisa ngisho noma ingangcwatshiwe. Gcina umlomo wakho uvale ngokuqinile.
3. Dala iphakethe lomoya njengoba ukunyakaza kuhamba kancane. Uma imfucumfucu incipha, unemizuzwana emi-2 ukuya kwemi-3 ngaphambi kokuthi iqhwa likhiyeke. Beka ingalo emlonyeni wakho nasekhaleni ukuze uqophe umgodi ongu-0.5-litre (30-cubic-inch). Nweba isifuba sakho ngokuhogela okujulile; lapho iqhwa lishona, ukukhipha umoya kudala indawo yokuthi ubambo lwakho luphefumule.
4. Yelulela isandla phezulu. Uma kuqondile, phushela isandla esisodwa phezulu. Igilavu ​​eveziwe inciphisa izikhathi zokusesha ukusuka kumaminithi angu-45 ukuya ngaphansi kwamaminithi angu-3.
5. Yonga umoya-mpilo. Setha iqhwa liqina njengokhonkolo. Ukubhodloza noma ukumemeza kumosha umoya oyigugu. Hlala uzolile futhi ulalele ama-transceivers abatakuli.

Amathebula ereferensi yobuchwepheshe¶

Ukuqonda amapharamitha aphathekayo, imikhawulo yokuqina kweqhwa, kanye nokucaciswa kwegiya le-avalanche kunikeza ukucaca ngesikhathi sokuhlelwa kwangaphambi kohambo nezimo eziphuthumayo.

Imikhawulo yeqhwa yokuhamba ngemoto yeqhwa¶

Avalanche rescue gear technical requirements¶

Ishadi lokugeleza lesinqumo nelokuhlenga¶

flowchart TD
    A["I-Emergency Trigger ku-Backcountry Terrain"] --> B{"Khomba Uhlobo Lwenhlekelele"}

    B -->|"I-snowmobile Igqekeza Eqhweni"| C["Lahla Umshini Ngokushesha"]
    C --> D["Lawula i-Gasp Reflex yamasekhondi angama-60"]
    D --> E["Jikela ku-180° ubheke eqhweni eliqinile lokungena"]
    E --> F["Faka ama-Ice Awls kusuka ku-Chest"]
    F --> G["I-Flutter Kick Legs to Surface"]
    G --> H["Donsela i-Torso ku-Ice Shelf"]
    H --> I["Roll Uvundlile Usuka eHole"]
    I --> J["Hlubula Izendlalelo Ezimanzi endaweni yokukhosela yomoya"]
    J --> K["Faka I-Core Warming ukuze Uvimbele Ukuwa Ngemva Kokwehla"]

    B -->|"I-Slab Avalanche Fractures ku-Slope"| L["Donsa Isibambo Se-Airbag Ngokushesha"]
    L --> M["Qinisekisa I-Inflation ye-Airbag engu-150L"]
    M --> N["Khipha Amabhodi Okugijima kwe-snowmobile"]
    N --> O["I-Backstroke Enamandla Ibhukuda Kudoti"]
    O --> P{"I-Slab Yehlisa Ijubane?"}
    P -->|"Yebo"| Q["I-Cup Arm Over Mouth ye-Air Pocket"]
    Q --> R["Phonsa Ingalo Eyodwa Ngaphezulu"]
    R --> S["Yonga I-Oxygen; Lindela i-Beacon Search"]
    P -->|"Cha"| O

Ukulungiswa kwemishini kanye nokulungiswa kokugibela kusengaphambili¶

Ukusinda ezehlakalweni zasebusika ezinemiphumela ephezulu kuncike ekulungeni kwegiya ngaphambi kokushiya i-trailhead. Ibhande eliphukile, indlela yokuqalisa efriziwe, noma ibhethri elilahliwe liguqula iphutha elisindekayo libe isehlakalo esibulalayo.

Uhlu lokuhlola amagiya okuphepha e-snowmobile¶

• Izikhethi zokuhlenga iqhwa (ama-awl): Kuhlolelwe amaphuzu acijile, agqokwa ngaphandle phezu kwamahhanisi asesifubeni, anezintambo ezingaboshiwe futhi zifinyeleleka ngamagilavu ​​asindayo.
• I-avalanche transceiver: Isethwe ukuze idlulise imodi (457 kHz), ileveli yebhethri eqinisekisiwe ngaphezu kwamaphesenti angama-80, igqokwa ngaphansi kwezingubo zangaphandle ngokuqondile kungqimba oluyisisekelo.
• Iphakethe le-Avalanche airbag: I-canister ikalwe esikalini segram ngokumelene nesisindo se-tare esigxiviziwe, noma i-capacitor kagesi eshajwe ngokugcwele ne-test spin eqinisekisiwe.
• I-avalanche probe: Ubuncane obungu-280 cm (9.2 amafidi) ubude, indlela yokukhiya ihloliwe futhi yasetshenziswa ukuhlolwa ku-trailhead.
• Ifosholo leqhwa lensimbi: Ukwakhiwa kwe-aluminium ngesibambo se-D-grip, kuhlanganiswe futhi kuvikelwe ngaphakathi kukabhaka noma isikhwama somhubhe.
• Isudi yosizo lokuntanta: Yakhiwe ngegwebu lamaseli avaliwe noma ulwelwesi olunwebekayo olunikeza ukuchama okuhle.
• Idivayisi yezokuxhumana eziphuthumayo: Isigijimi se-SOS sesathelayithi sivikelwe kumuntu womgibeli, asigcinwanga emotweni yeqhwa.
• Ikhithi yezimpahla eziyisipele ezomile: Amasokisi evolo, i-thermal balaclava, uboya beboya obumaphakathi nesisindo, kanye nongqimba lwangaphandle oluvikela umoya oluvalwe ngaphakathi kwesikhwama esomile esingangenisi.

Izivumelwano eziphuthumayo zesifunda nengqalasizinda yokuhlenga¶

Izimpendulo zosesho, zokuhlenga, nezimo eziphuthumayo zasebusika ziyahlukahluka ezindaweni kazwelonke. Abagibeli be-backcountry kumele bazi izinhlaka zendawo zokuxhumanisa izimo eziphuthumayo kanye nemigudu yokufinyelela yokuhlenga.

E-United States¶

I-Backcountry rescue iwela ngaphansi kwegunya losherifu besifunda. Ukudayela u-911 noma ukucupha i-SOS yesathelayithi kuxhuma ekuthumeni kwesherifu, okwenza kusebenze amaqembu okusesha namavolontiya. Izikhungo zesifunda ze-avalanche zikhipha izilinganiso zengozi zansuku zonke ukusuka kuLeveli 1 (Ephansi) ukuya kuLeveli 5 (Okudlulele). Iminyango yezicishamlilo yasemaphandleni ithumela amaqembu okuhlangula eqhweni, kodwa izikhathi zokuphendula ezikude ngokuvamile zingaphezu kwemizuzu engama-60.

ECanada¶

Ukuzijabulisa kwe-Backcountry kuhlanganisa indawo enkulu ephethwe iziphathimandla zesifundazwe kanye ne-Parks Canada. Ukushayela u-911 kuxhumene neRoyal Canadian Mounted Police (RCMP) noma i-Ontario Provincial Police (OPP), ehlanganisa amaqembu okusesha amavolontiya. I-Avalanche Canada ikhipha izibikezelo ze-alpine kuzo zonke izintaba ezisentshonalanga. Iziphathimandla zezokuthutha zincoma okungenani amasentimitha angu-20 (amayintshi angu-8) eqhwa elicacile ezimotweni zeqhwa.

E-European Union nasemazweni aseNordic¶

Ukuhamba eqhweni kulawulwa ngokuqinile eSweden, Norway, naseFinland. Ukudayela u-112 kuxhuma ekuthumeleni izimo eziphuthumayo ngedatha yendawo ezenzakalelayo. ESweden, Amaphoyisa axhumanisa i-Mountain Rescue Service. E-Norway, i-Joint Rescue Coordination Centre ithumela amaqembu e-alpine, kuyilapho izindikimba zokuqapha zesifunda zihlinzeka ngemininingwane yengozi ye-avalanche.

E-United Kingdom¶

Ezifundeni zase-Scottish alpine, ukuzilibazisa kwasebusika kuhlangabezana nezingozi ezinkulu zeqhwa kanye nama-avalanche ayisicaba. Shayela u-999 noma u-112 bese ucela i-Police Mountain Rescue ukuthi ifinyelele ukuthunyelwa kwamaphoyisa esifunda. I-Sportscotland Avalanche Information Service ishicilela izilinganiso zengozi yansuku zonke yezindawo eziyisithupha zezintaba eziphakeme.

E-Australia naseNew Zealand¶

Ukuhamba nge-snowmobile kukhawulelwe ekulungiseni indawo ye-ski resort, ukuqashwa kwamakilabhu, nokuhlenga i-alpine. Shayela u-000 e-Australia (cela Ukuseshwa Kwamaphoyisa E-Alpine Nokuhlenga) noma u-111 eNew Zealand. I-New Zealand Mountain Safety Council ikhipha ama-avalanche ama-avalanche zone zase-Southern Alps.

Imibuzo evame ukubuzwa¶

Ingabe ukugqoka ubhaka kuzongivimbela ukuba ngizikhiphe emgodini weqhwa?¶

Ubhaka osindayo ogcwele izintaba ogcwele amagiya aminyene ungakudonsela phansi futhi ukhawulele ukuhamba kwakho kwehlombe ngesikhathi uzisindisa eqhweni. Ubhaka we-avalanche airbag oqukethe i-foam cell padding noma igumbi eligcwele umoya uhlinzeka ngokujabula kunokuba ukudonsele ngaphansi. Uma ugqekeza eqhweni ngenkathi ugqoke iphekhi elijwayelekile elingashisisiwe elingenawo amandla, qaqa ibhande okhalo kanye nebhande lesifuba ngokushesha ukuze uphume ephaketheni uma kuvimbela ukukhahlela kwakho phezulu eshalofini leqhwa.

Ingabe kufanele ngizame ukukhipha inqola yami yeqhwa emanzini uma ingene phakathi?¶

Ungalokothi uhlenge umshini ocwiliswe kancane eqhweni eliphukile. Isisindo semoto yeqhwa sizophuka ngokuzumayo ishalofu leqhwa, likudonsele ngaphansi kwamanzi ngaphansi kwe-chassis. Hamba ngokushesha uye endaweni eqinile. Maka izixhumanisi ze-GPS bese uthintana nethimba lochwepheshe lokutakula elifakwe amawintshi nezinyini ezintantayo.

Lingakanani izinga lokusinda kwezisulu ze-avalanche ezifakwe i-airbag evuthelwe umoya?¶

Ucwaningo lwezibalo olubuyekezwe kontanga olushicilelwe abacwaningi bezokuphepha be-avalanche lubonisa ukuthi ukuthunyelwa kwe-avalanche airbag kunciphisa izinga lokufa lokubandakanyeka okubucayi kwe-avalanche kusuka cishe kumaphesenti angu-22 kwehle kuya kumaphesenti angu-11. Imbangela eyinhloko yokufa ekusetshenzisweni kwama-airbag angenakusinda kuwukuhlukumezeka ngokomzimba okubangelwa ukushayisa izihlahla, amawa, noma umshini ngesikhathi wehla, noma umngcwabo ophelele ngaphansi kwezicupho ezinkulu zezindawo ezinjengemihosha noma imihosha lapho ukuguquguquka kwembudumbudu kungakwazi ukugcina isisulu singaphezu kwezinga leqhwa.

Ngingakwazi yini ukuhamba ngokuphepha ngiwele iqhwa lomfula uma ubuso bubukeka buqine ngokuphelele?¶

Iqhwa lomfula alilokothi liphephe ezimotweni zeqhwa. Amanzi ageleza ngaphansi kweqhwa alokhu eguguleka ingxenye engaphansi yeshidi, okudala ukuhluka okukhulu kogqinsi ebangeni elingamamitha ambalwa. Amazinga amanzi aguquguqukayo adala izikhala zomoya phakathi kwamanzi neqhwa, acekele phansi amandla okuthwala. Hlala njalo weqa imigwaqo yasemanzini kumabhuloho aqokiwe, anakekelwe ezimotweni zeqhwa noma izindawo zokuwela ezihlolwe kusengaphambili.

Ngimfudumeza kanjani umaqondana ogibele eqhweni uma sikude nendawo yokukhosela?¶

Gcina isisulu sivundlile ukuze uvimbele ukuwa kwangemuva futhi usivikele emoyeni ngemuva kodonga lweqhwa noma izihlibhi. Hlubula izingubo ezimanzi bese uzigqokisa izendlalelo ezomile ezikhwameni eziyisipele. Gcoba imizimba yabo ngengubo yesikhala esiphuthumayo kanye nesaka le-bivy, bese usebenzisa amaphakethe okushisa kumongo kuphela. Yakha umlilo endaweni yegatsha ukuze ungacwili ephaketheni leqhwa.

Isitifiketi sosizo lokuqala¶

Ukusinda ekucwilisweni emanzini angaphansi kweziro, i-hypothermia enzima, kanye ne-backcountry avalanche trauma kudinga amakhono okwelapha asebenzayo angakwazi ukulawulwa ngemanuwali iyodwa. Uma ugibela izinqola zeqhwa, unqamula amachibi ayiqhwa, noma uhlola indawo ye-alpine, qedela izifundo eziqinisekisiwe ze-Wilderness First Aid noma i-Wilderness First Responder ngokusebenzisa abahlinzeki abafana ne-Red Cross, Wilderness Medical Associates, noma i-NOLS Wilderness Medicine. Thatha izifundo eziqinisekisiwe ze-Avalanche Field Level 1 noma izifundo ze-Companion Rescue eziqashelwa i-American Avalanche Association noma i-Avalanche Canada ukuze ube yingcweti ekusesheni kwebhikhoni, ukufosholo okubalulekile, nokunakekelwa kwenkundla ye-hypothermia.

Imithombo ihloliwe¶

• Ikhomishini Yamazwe Ngamazwe Yokuhlenga I-Alpine (ICAR): Izincomo zeKhomishana Yezokwelapha mayelana nokuvuswa kwezisulu ze-avalanche, amajika esikhathi sokungcwaba, nokulawulwa kwe-hypothermia yasensimini.
• I-American Avalanche Association (A3): Okubalulekile kokuhlenga i-Avalanche, izimiso zosesho oluhambisanayo, kanye nezibalo zokusetshenziswa kwe-avalanche airbag.
• I-Avalanche Canada: Izimiso zokuphepha ze-avalanche zasentabeni, ukuphathwa kwendawo, kanye namazinga e-transceiver.
• I-United States Coast Guard (USCG): Izimiso eziyisisekelo zokusinda emanzini abandayo, umugqa wesikhathi wokushaqeka okubandayo ongu-1-10-1, namazinga wokuqeqesha wokuhlenga iqhwa.
• I-Canadian Red Cross: Imihlahlandlela yokuphepha kweqhwa, amafomula amancane okujiya kweqhwa aphephile, nezindlela zokuzisindisa.
• I-Swedish Civil Contingencies Agency (MSB): Izivumelwano zokuphepha kweqhwa, amazinga okusebenza ama-ice awls, kanye nokuxhumana kokuhlenga izintaba ze-Nordic.
• I-National Oceanic and Atmospheric Administration (NOAA) / Isevisi Yesimo Sezulu Kazwelonke: Amathebula okubala okubandayo komoya kanye nokuvimbela ukulimala kwesimo sezulu esibandayo.

Iziqondiso ezihlobene¶

• Ukuwela eqhweni
• I-Hypothermia kanye ne-frostbite
• I-Hypothermia afterdrop phenomenon kanye nokuphatha kahle ukuboshwa kwenhliziyo
• Ama-avalanche
• Ikhithi yemoto yasebusika kanye nokuhlola imoto ngaphambi kobusika
• Ubhajwe esiphephweni seqhwa emotweni
• I-snowmobile noma i-ATV igqekeze eqhweni lechibi noma iboshwe yimpushana ejulile