Awọn igi 'Widowmaker' Hung-Up, Awọn Pẹpẹ Chainsaw Pinched, ati Awọn pajawiri Ipadabọ Orisun-Pole¶

Igi gbigbẹ igi, isọdi ifunlẹ iji, ati gige igi ina gbe ọkan ninu awọn oṣuwọn iku ti o ga julọ fun wakati kan ṣiṣẹ ti iṣẹ eniyan eyikeyi. Gẹgẹbi data ipalara iṣẹ-ṣiṣe lati ** Aabo Iṣẹ iṣe ti Amẹrika ati Isakoso Ilera (OSHA Logging Standard) 29 CFR 1910.266), National Institute for Work Safety and Health (NIOSH), US Forest Service (USFS), ati awọn UK Health and Safety Alase (HSE / Arboricultural Association) *, awọn tiwa ni opolopo ninu apaniyan ijamba igbo laarin awọn onile, agbe, ati onile ko wa lati lairotẹlẹ olubasọrọ pẹlu awọn gbigbe chainsaw eyin nikan. Dipo, diẹ sii ju ** 70 ida ọgọrun ti awọn apaniyan jẹ abajade lati agbara agbara ẹrọ ti o fipamọ ni itusilẹ ni agbara ** ni awọn pajawiri Ayebaye mẹta: ** (1) Awọn Igi Hung-Up (“Awọn oluṣe opo”), nibiti igi ti a ge ni apakan apakan ti awọn ẹka ti igi ti o duro nitosi ti o tẹri ni igun 45-degree ti o gbe ** 2,0000 + 0000 kilo si 0000000000 kg. 17,600+ poun) ti ipá fífúnni lókè; ** (2) Tẹ "Opa Orisun omi"**, nibiti ẹhin mọto ti o ti ṣubu ti pin 5-to-15-centimeter (2-to-6-inch) sapling tabi ẹsẹ sinu ọrun ti o nipọn ti o kojọpọ pẹlu ẹgbẹẹgbẹrun Newtons ti ẹdọfu rirọ ti o fa pada ni ** 80 si 120 kilomita fun wakati kan (50 si 75 mph, jawll) ọrun. lesekese abẹfẹlẹ chainsaw kan fọwọkan ita ti tẹ; ati ** (3) Pinched Chainsaw Itọsọna Ifi ***, ibi ti misreading ** funmorawon igi dipo igi ẹdọfu ** tilekun kerf Iho lori igi.

Surviving a woodlot aawọ nilo ibawi awọn keji a ge ti ko tọ: ** idekun awọn ri engine lẹsẹkẹsẹ ***, mọ pe ** o gbọdọ MASE rin labẹ a ṣù-soke igi, MA gbiyanju lati subu awọn atilẹyin igi ti o dani soke a widowmaker, ati MASE ngun tabi Buck ruju si pa awọn isalẹ ti a gbigbe ara mọto ("fitila Ige"), ati ki o mọ awọn ọna ti o ni anfani lati pilasitik anfani. gige awọn wedges, yi igi ti a fikọ silẹ kuro ni isunmọ rẹ nipa lilo ** ko le kio tabi peavey ***, fa apọju sẹhin pẹlu ** okun puller / winch routed nipasẹ ọna gbigbe ọna gbigbe kan, tabi fá abẹlẹ ti opo orisun omi ni fekito iwọntunwọnsi 45-45 rẹ ** nitorinaa ẹdọfu naa tu silẹ laiseniyan. Ti o ba jẹ pe ibalokanjẹ tabi pipa pajawiri kan ti ṣẹlẹ, pe agbegbe rẹ pajawiri awọn nọmba lẹsẹkẹsẹ, ati atunyẹwo awọn itọsọna ti o jọmọ wa lori sa fẹlẹ opoplopo iná ati koriko ina olugbeja, eefin afẹfẹ shatter ati iji bibajẹ, ati omiran hogweed ati egan parsnip ilẹ-aferi ewu.

Ṣe eyi ni bayi¶

1. Ti ẹnikan ba ṣẹṣẹ lu nipasẹ ọpá orisun omi ti n pada sẹhin, ọwọ wiwu ti o ṣubu, tabi tipa chainsaw, pe nọmba pajawiri ti agbegbe rẹ (911 ni AMẸRIKA/Canada, 112 ni EU, 999 ni UK) Lẹsẹkẹsẹ ki o lo Irin-ajo afẹfẹ ti iṣowo (CAT / SOFTT-W) ti o ga ati ọgbẹ ọgbẹ ju eyikeyi ọgbẹ ọgbẹ ju eyikeyi lọ. ni wiwọ pẹlu gauze). Ti oju tabi bakan ba npa lati idasesile orisun omi-opa fa ẹjẹ si adagun ni ọfun, joko alaisan ti o ni imọran ti o tẹriba siwaju (tabi gbe alaisan ti ko ni oye sinu ** Ipo Imularada Lateral osi ** lakoko ti o n ṣe atilẹyin ọrun) nitorina ẹjẹ n jade kuro ni ẹnu.
2. **Ti igi ti o ba n gé ba di HUNG UP ("Lodged") ninu igi miiran, PA ENGIN SINSAW Lẹsẹkẹsẹ, pada sẹhin ni ọna abayo rẹ 45-degree, ki o maṣe rin labẹ ẹhin ti o tẹẹrẹ. igi-gigun kuro ***.
3. **MASE gbiyanju awọn "Awọn ọna abuja Apaniyan Mẹta" lori igi opo ti a fi sokọ: ***
   • **KÒ ṢE ṣubu igi ti o ni atilẹyin ** ti igi ti a fikọ si nsinmi ninu.
   • **MASE ge awọn ẹka ti o ni atilẹyin nigbati o duro labẹ rẹ.
   • ** MASE ge 1-si-2-mita igi firewood chunks kuro ni isalẹ apọju igi ti a fikọ ("fifọ si isalẹ" / "fitila-fitila")** nireti pe yoo ṣubu ni inaro; Gbogbo gige jẹ ki igi naa ga ju ati ki o fa apọju sẹhin sinu àyà rẹ tabi ṣe imọran ẹhin mọto sẹhin lori ori rẹ.
4. Lati mu igi ti a fikọ silẹ lailewu, lo ikanKAN ninu awọn ọna OSHA/Iṣẹ-igbo mẹta ti a fọwọsi lati ita agbegbe isubu:
   • ** Ọna A (Yi lọ kuro ni ade):** Fi igun pivot ti igi hinge silẹ ki o lo ọwọ pipẹ ** Cant Hook, Peavey, tabi Felling Lever ** lati ** yiyi / yi ẹhin mọto 90 si awọn iwọn 180 ni ayika ipo rẹ ** titi awọn ẹka rẹ yoo fi jade kuro ni ade atilẹyin.
   • ** Ọna B (Pry the Butt Siwaju):** Ya awọn igi didimu ni pẹkipẹki ki o lo ** igi pry ọpá igi gigun kan ** lori igi fulcrum kan lati mu apọju pada sẹhin kuro ni kùkùté.
   • ** Ọna C (Winch / Tractor / Rope Puller via Redirect Snatch Block):** So pq choke kan tabi sling arborist ti o ni iwọn ni ayika ipilẹ ti igi ti a fikọ, ṣiṣe okun waya tabi okun akọmalu kekere ti o ni okun nipasẹ ohun idilọ gbigba (puley) si igi ẹgbẹ kan ni ita ọna isubu **, ki o fa ṣugbọn ṣẹgun sẹhin (lilo ọwọ win sẹhin).Tirfor / Maasdam okun puller) tabi tirakito ti o wa ** o kere ju 2x giga igi kuro ni igun 90-degree ***.
5. **Ti ọpa chainsaw rẹ ba ni PINCHED ni gige gige tabi bucking log, pa ohun elo naa lẹsẹkẹsẹ ki o ma ṣe yak lile lori awọn ọwọ. 15 to 30 cm [6 to 12 in] kuro ni ẹgbẹ ẹdọfu lẹhin atilẹyin log).
6. ** Ṣaaju ki o to ge KANKAN ti o tẹ eso tabi ẹka pinni ("Olusun Orisun omi"), wa laini bisecting 45-degree ni apex ti tẹ ati MASE fọwọkan igun oke / ita taara pẹlu chainsaw ti nṣiṣẹ.* igi awọn okun agbo rọra lai snapping.

Igi ipinnu: Igi Widowmaker Fikun-soke vs. Bent Orisun Pole vs. Pinched Chainsaw Pẹpẹ¶

Lo igi ipinnu arboriculture aaye yii ni akoko ti o rii awọn ibùso, igi kan ti o gbe si oke, tabi ti o ba pade awọn ifunlẹ ti iji.

flowchart TD
    A["Chainsaw / Igi ti n ṣubu Pajawiri ni Woodlot"] --> B{"Ewu Mechanical wo ni O dojukọ?"}
    B -->|"Igi ti wa ni HUNG UP (ti o wa sinu awọn ẹka igi miiran) tabi ẹsẹ 'Widowmaker' ti o fọ ni ori oke"| C["HUNG-UP TREE / WIDOWMAKER PROTOCOL: 1. Kill saw engine 2. Ma rin labe igi 3. Unbolt powerhead if bar is stick 4. Flag hazard zone (2x tree height) if going"]
    B -->|"Ṣẹbẹ eso tabi ẹka ti a pin si labẹ igi ti o wuwo ('Pole Orisun omi' labẹ ẹdọfu giga)"| D["PROTING-POLE PROTOCOL: Duro lori INU ti tẹ tabi 45 iwọn sile; MASE straddle tabi duro ni iwaju aaki lode"]
    B -->|"Ọpa itọsọna Chainsaw jẹ PINCHED ṣinṣin inu ẹhin igi ti o duro tabi log petele"| E["PINCHED PROTOCOL: Pa chainsaw engine lẹsẹkẹsẹ + olukoni idaduro pq; MASE yank kapa"]
    C --> F{"Njẹ Igi Hung-Up le wa ni ti yiyi tabi lever lailewu pẹlu ọwọ?"}
    F -->|"Kekere/Igi Alabọde (<25 cm / 10 ni DBH): Ade ti o fẹẹrẹ mu"| G["Aṣayan 1: Yipo ẹhin mọto 90-180 deg pẹlu Cant Hook / Peavey titi ade ti o ni ominira Aṣayan 2: Lever apọju sẹhin kuro kùkùté pẹlu 3 m (10 ft) igi pry igi"]
    F -->|"Igi Nla/Eru (> 25 cm / 10 ni DBH) tabi ti o jinna"| H["Aṣayan 3: Ipilẹ choke + okun ipa ọna / okun nipasẹ Snatch Block Pulley si ẹgbẹ + fa lati> 2x giga igi kuro pẹlu Winch / Tractor (tabi bẹwẹ Crane / Pro Arborist)"]
    D --> I["Wa Ojuami ti O pọju Tẹ (igun bisecting 45-deg) -> Fa irun awọn gige aijinile lori UNDERSIDE (Igi funmorawon) titi ti igi yoo fi rọra rọra"]
    E --> J{"Nibo ni Pẹpẹ Chainsaw Pinched?"}
    J -->|"Ninu Igi Ẹhin ti Igi Iduro kan (Igi joko pada lori igi)"| K["Wakọ 2 Stacked High-Lift Plastic Felling Wedges sinu gige ẹhin (tabi ge apo iderun ṣọra lẹgbẹẹ igi) lati gbe ẹhin mọto siwaju lori mitari"]
    J -->|"Ninu Wọle Bucking Petele (Top-Bind tabi Isalẹ-Dipọ)"| L["Ge ẹgbẹ ti o ṣii OR gbe / ge log naa pẹlu Cant Hook/Jack OR unbolt powerhead lati igi ki o ge iderun 20 cm (8 in) kuro"]

Apá 1: Oye Wood Fiber Physics: Funmorawon Wood vs¶

Gbogbo igi chainsaw pinched ati gbogbo ọpá orisun omi ti o tun pada jẹ iṣakoso nipasẹ ofin kan ti awọn ẹrọ iṣelọpọ: ** Eyikeyi ege igi ti o ṣe atilẹyin iwuwo tabi ti tẹ sinu ohun ti tẹ ni agbegbe COMPRESSION (nibiti awọn okun igi ti wa papọ) ati agbegbe TENSION kan (nibiti awọn okun igi ti na taut bi awọn okun gita)**.

1. Bii o ṣe le Ka Awọn Isopọ Mẹrin Ṣaaju ki o to Fi ọwọ kan Igi Pẹlu Chainsaw kan¶

Ṣaaju ki o to ge eyikeyi ninu igi ti o ṣubu, iji fifun, tabi awọn eso ti o tẹriba, ṣe idanimọ ẹgbẹ wo ti igi ti a na (Ibanujẹ) ati ẹgbẹ wo ni a fun pọ (Compression):

Apá 2: Pajawiri 1: Tu silẹ “Pole Orisun omi” ti tẹ silẹ Laisi Lilu ni Oju¶

Lẹ́yìn ìjì líle, ìjì yinyin, tàbí iṣẹ́ wó lulẹ̀ igi, àwọn ẹ̀ka igi ńláńlá tí ó ṣubú léraléra máa ń pọ́n àwọn igi gbígbé kéékèèké, hóró, tàbí àwọn ẹsẹ̀ aláwọ̀ ewé (5 to 20 cm / 2 to 8 inches ni iwọn ila opin) si isalẹ si ilẹ ni igun to muna. Awon igbo pe eleyi ni Pole Orisun omi.

1. Kí nìdí Gige awọn Top ti a Orisun omi polu Acts Bi a Baseball Adan to Bakan¶

Igi lile tabi igi conifer ti a tẹ sinu awọn ile itaja ologbele-opin ** agbara igara rirọ ** ninu awọn okun ti o nà lẹgbẹẹ ** oke / ita ti tẹ (Agbegbe Ẹdọfu) ***.

• Kini yoo ṣẹlẹ Nigbati oniṣẹ ba Ge Taara Si Oke Arch: Lẹsẹkẹsẹ ti eyin chainsaw yiyi ge nipasẹ 30 ida ọgọrun ti awọn okun oke ti o nà, igi to ku ko le di akoko titẹ mọ. Sapling ** explodes si oke ati sẹhin ni o kere ju 0.05 seconds** pẹlu ẹgbẹẹgbẹrun awọn Newtons ti agbara, gbigbe chainsaw ti nṣiṣẹ si oke sinu oju oniṣẹ tabi lilu oniṣẹ taara labẹ agba, bakan, ọfun, tabi egungun kola.
• ** Abajade ibalokanje:** Awọn fifọ mandible ti o ṣii ni ita, fifun laryngeal (idena ọna atẹgun lẹsẹkẹsẹ), ipalara ọpọlọ ikọlu, fifọ ọpa ẹhin ara, tabi awọn lacerations oju/ ọrun chainsaw.

2. Ailewu 45-Degree Underside Shaving Technique fun Orisun omi ọpá¶

Maṣe ge ọpá orisun omi kan nitosi ikangun rẹ (nibiti gbogbo ọpa ti n nà soke si ọrun) ati ki o maṣe ge e ni ipilẹ rẹ nigbati o duro ni iwaju rẹ. Tẹle ** Iṣẹ igbo AMẸRIKA ati Ifọwọsi ISA Arborist 45-Degree Bisecting Vector Ọna ***:

+-------------------------------------------------------------------------+
|       HOW TO RELEASE A BENT SPRING POLE WITH ZERO SNAPBACK              |
|                                                                         |
|              Apex of Maximum Bend (45-Degree Bisector)                  |
|                         \                                               |
|                       .---.  <-- TENSION WOOD (Top/Outside):            |
|                     .'  \  '.    NEVER cut here first                   |
|                    /     \   \                                          |
|                   |   SHAVE   \  Pinned Tip Under Heavy Log             |
|                   | UNDERSIDE  \_______                                 |
|   Root Base       | (Compression)  ( O ) <-- Heavy Fallen Trunk         |
|  =================|===================================================  |
|                                                                         |
|  STEP 1: POSITION YOUR BODY SAFELY                                      |
|          Stand to the SIDE of the sapling (ideally on the INSIDE of     |
|          the curve, at a 45-degree angle behind the apex), with your    |
|          head and chest completely out of the vertical plane of recoil. |
|                                                                         |
|  STEP 2: FIND THE OPTIMUM RELEASE POINT (THE 45-DEGREE BISECTOR)        |
|          Imagine a straight horizontal line along the pinned tip and a  |
|          vertical line up from the roots; bisect that 90-degree corner  |
|          at a 45-degree angle right through the apex of maximum bend.   |
|                                                                         |
|  STEP 3: SHAVE THE UNDERSIDE (COMPRESSION WOOD) SLOWLY                  |
|          Place the top of the chainsaw bar against the UNDERSIDE (inner |
|          belly) of the curve at the 45-degree point. Make a series of   |
|          shallow, gentle shaving passes (or a narrow V-notch) across    |
|          the underside compression fibers.                              |
|                                                                         |
|  STEP 4: WATCH THE SAPLING FOLD GENTLY LIKE A HINGE                     |
|          As you remove the compressed belly wood, the stretched outer   |
|          bark fibers on top stay intact and act as a soft strap hinge,  |
|          allowing the spring pole to relax and fold down smoothly with  |
|          zero violent snap. Once all tension is gone, sever the strap.  |
+-------------------------------------------------------------------------+

• ** Fun Awọn ọpá orisun omi Tiny (< 5 cm / 2 inches iwọn ila opin):** Mimu**lopper fori ọwọ, igi pruner, tabi riran ọrun ọwọ *** ti a lo lati ipari apa si ẹgbẹ nigbagbogbo jẹ ailewu ju yiyi chainsaw ti o wuwo ni fẹlẹ lile.
• ** Fun Awọn ọpa orisun omi nla (> 15 to 20 cm / 6 to 8 inches iwọn ila opin): *** Ṣe itọju ẹhin igi nla ti o tẹ bi eewu giga-aidọgba: lo ** gige igbesẹ mẹta-ojuami (tabi gige alaidun ti o fi okun ẹhin silẹ) *** lati inu ailewu inu-itẹpo, tabi fa log pinning kuro pẹlu winch / okun tirakito lati ọna jijin.

Apakan 3: Pajawiri 2: Ipinnu Pẹpẹ Chainsaw Pinched kan lailewu¶

Gbogbo oniṣẹ chainsaw bajẹ ni iriri ** igi itọsọna pinched ***: boya igi ti o duro ṣinṣin sẹhin (sits back) lakoko gige ẹhin ti n ṣubu nitori afẹfẹ, ẹhin-tẹẹrẹ, tabi ade asymmetrical, TABI igi petele kan tilekun lori igi lakoko bucking.

1. Ofin akọkọ lẹsẹkẹsẹ: Unbolt the Powerhead Ṣaaju ṣiṣe ohunkohun ti o lewu¶

Ti igi chainsaw rẹ ba di wiwọ ni wiwọ inu gige kan:

1. Pa Iyipada Ibanujẹ naa (Paarẹ)STOP) ati Mu Bireki pq.
2. ** Ma ṣe Yank tabi Lile Lile lori Awọn Imupa Chainsaw:** Gbigbe fi agbara tẹ awọn irin-ọpa itọsona, ripi awọn agbeko-gbigbọn, tabi fa igi kan si awọn didan rẹ.
3. • Lo iboju rẹ (Wrench/Screwdriver) lati yọ awọn eso igi meji ati ideri idimu, yọ ẹwọn naa kuro ni Sprocket Drive, ki o gbe ori agbara engine kuro ni awọn studs: ***
   • Bayi igi itọsọna irin nikan ati lupu pq ti wa ni di igi naa, lakoko ti ẹrọ rẹ jẹ ailewu lori ilẹ (ati pe ti o ba ni ọpa itọsọna apoju ati ẹwọn ***, o le tẹ ẹ sii lori ori agbara rẹ lati ṣe gige iderun ailewu).

2. Oju iṣẹlẹ A: Idasilẹ Chainsaw kan Pinched ni Petele Bucking Log¶

• ** Ti o ba pin ni Dipọ Oke (Ge Ni pipade ni Oke): *** Lo ** Cant Hook, Peavey, Timberjack, tabi 2-mita (ẹsẹ 6.5) igi pry igi *** lori bulọọki fulcrum kan si ** gbe apa isalẹ ti log ni isalẹ gige *** nipasẹ 2 centimeters (2 centimeters)1 inch) nitorina oke kerf ṣii; TABI ṣe ** gige iderun 20 to 30 centimeters (8 to 12 inches) si awọn ẹgbẹ ti pinched bar *** (gige ⅓ funmorawon akọkọ, ki o si ⅔ ẹdọfu) lilo a ọwọ ọrun ri tabi apoju bar.
• Ti a ba pin ni isale Isalẹ (Ge Ni pipade ni Isalẹ): Wakọ ** ṣiṣu ṣubu/bucking wedge kan** sinu oke gige pẹlu ibo didi tabi òòlù lati fi ipa mu kerf ṣii, TABI lo pry polu lati gbe opin igi ti o rọ silẹ.

3. Oju iṣẹlẹ B: Idasilẹ Chainsaw kan Pinched ni Ẹhin Ge ti Igi Iduro (Igi "Sat Back")¶

Nigbati igi ti o duro ba tẹ sẹhin si igi rẹ lakoko gige ẹhin, ** o dojukọ eewu fifun pa lori lẹsẹkẹsẹ ***: igi naa wa lori ọpa itọsọna rẹ pẹlu 70 ogorun ti ẹhin rẹ ti ya.

1. Ṣayẹwo boya Igi Hinge Rẹ Tun Ti Waye: Niwọn igba ti ** rinhoho aṣọ kan ti igi isunmọ ti a ko ge (10% of tree diameter jakejado ati 80% of tree diameter gun) *** maa wa titi laarin ogbontarigi oju iwaju rẹ ati gige ẹhin rẹ, mitari tun n ṣakoso itọsọna ti igi naa.
2. ** Wakọ Giga-Gbigbe Ṣiṣu Awọn Irẹlẹ Sinu Ige Ẹhin (Maṣe Awọn Igi Irin Nitosi Ẹwọn kan):** Fi ọkan tabi meji sii ** pilasitik ABS ti o ni ipa giga tabi iṣuu magnẹsia jale wedges ** sinu ẹhin ge lẹhin tabi lẹgbẹ igi pinched ki o lu ṣinṣin pẹlu idibo alapin ti aake ja tabi 1.5 to 2 kg (3 to 4 lb) òòlù. Tolera 25 cm (10 in) gige awọn wedges ṣe ipilẹṣẹ ** 2,000 si 4,000 kg (2 si awọn toonu 4) ti agbara gbigbe **, ṣiṣi kerf 2 to 4 centimeters (1 to 1.5 inches), freeing rẹ pinched bar, ati tipping awọn igi siwaju lori awọn mitari.
3. Ti o ba ge nipasẹ Mita tabi Igi naa Ti o jinna pupọ fun Awọn wiwọn: *** Padasẹyin lẹsẹkẹsẹ. Yọ ori agbara kuro ti o ba ni aabo, fi ami si agbegbe naa, ati ** fa igi naa kuro ni ijinna ti o kere ju 2x giga igi naa *** ni lilo winch, opa okun, tabi tirakito ti a ti lọ nipasẹ ibi-itọpa ti o ni idari. **Maṣe ge ogbontarigi oju tuntun ni apa idakeji igi kan ti ẹhin atilẹba rẹ ti ya idaji ẹhin mọto naa.

Apakan 4: Pajawiri 3: Gbigbe Igi “Widowmaker” Sokale Lailewu.¶

Igi ** ti a fi somọ *** (ti a tun pe ni **igi ti a sùn *), pẹlu awọn ẹka ti o ti fọ ti o wa ni giga ni ibori (“awọn opó”**), jẹ eewu kan ṣoṣo ti o ku ni igbo. Paapaa ti igi ti a fikọ ba wo ni wiwọ ni wiwọ ni orita ti igi miiran, afẹfẹ afẹfẹ tabi gbigbọn ilẹ le fa ki o ṣubu ni idakẹjẹ ni iṣẹju 1.5.

1. Awọn Idinamọ Idi Mẹrin ti Igi Fikun-soke¶

Labẹ ** OSHA 29 CFR 1910.266(h)(2)(vii) ati UK HSE (AFAG 302 / 303***, awọn iṣe mẹrin jẹ eewọ patapata:

1. MASE Rin tabi Ṣiṣẹ Labẹ Ọna Titẹ Ti Igi Fikọ-soke.
2. ** MA ṢE Subu Igi Atilẹyin Ti o Di Igi Fikun-soke:** Gige igi ti o ni atilẹyin nigba ti igi 3-ton ti a fi kọ si ade rẹ jẹ ki igi atilẹyin naa ** ya ni inaro ("alaga-barber")** tabi gbe awọn igi mejeeji kọja ọna abayo.
3. ** MAA ṢE Subu Igi miiran Ni Ehin Igi Hung-Up ("Domino Felling"):** Ti igi keji ba gbe si oke akọkọ, o ni ** awọn opó meji ti o ni titiipa ***.
4. Maṣe gun igi ti a fikọ tabi ge awọn igi kukuru kuro ni apọju rẹ (“Ipalẹ isalẹ”).

2. Awọn ọna Ailewu Igbesẹ-Igbese mẹta lati Mu Igi Fikọ-soke kan Walẹ¶

+-------------------------------------------------------------------------+
|       3 SAFE ARBORIST METHODS TO BRING DOWN A HUNG-UP TREE              |
|                                                                         |
|  METHOD 1: ROLL THE TREE OFF ITS HINGE WITH A CANT HOOK / PEAVEY        |
|            (Best for small-to-medium trees up to 25-30 cm / 10-12 in)   |
|  1. Inspect overhead for loose dead widowmaker branches first.          |
|  2. Leave a corner of hinge wood on the side you want the tree to roll  |
|     toward, and sever the rest of the hinge.                            |
|  3. Clamp a Cant Hook, Peavey, or Felling Lever onto the trunk at waist |
|     height, stand on the uphill/safe side, and heave with your legs to  |
|     ROLL the trunk 90 to 180 degrees until its upper limbs unscrew out  |
|     of the supporting fork and the tree drops to the ground.            |
|                                                                         |
|  METHOD 2: LEVER THE BUTT BACKWARD WITH A LONG WOODEN PRY POLE          |
|            (When the butt is resting on or just in front of the stump)  |
|  1. Cut a stout green hardwood pole 3 to 4 meters (10 to 13 feet) long. |
|  2. Place a solid round log chunk on the ground 30 cm (12 in) in front  |
|     of the hung tree's butt as a fulcrum.                               |
|  3. Wedge the tip of the pry pole under the butt, stand to the side at  |
|     the far end of the pole, and lever the butt backward step by step.  |
|                                                                         |
|  METHOD 3: WINCH / ROPE PULLER / TRACTOR WITH A REDIRECT PULLEY BLOCK   |
|            (MANDATORY for large trees > 30 cm / 12 in or tight hang-ups)|
|  1. Wrap a rated choker chain or arborist sling around the lower butt.  |
|  2. Anchor a Snatch Block (redirect pulley) to a strong standing tree   |
|     at a 90-degree angle to the side.                                   |
|  3. Run a wire winch cable or low-stretch bull rope through the pulley  |
|     to a Hand Winch (Tirfor / Maasdam), ATV winch, or Tractor located   |
|     at least 2x the tree's height away outside the fall zone.           |
+-------------------------------------------------------------------------+

Awọn nọmba pajawiri agbegbe ati awọn ilana ile-ibẹwẹ¶

Ti ijamba igi kan ba waye ni agbegbe igberiko laisi awọn adirẹsi opopona, ṣii ohun elo kọmpasi / maapu foonuiyara rẹ ki o ka ** gangan latitude GPS ati awọn ipoidojuu gigun ** (tabi ** what3words ***) si olupin naa ki paramedics tabi awọn baalu ọkọ alaisan ọkọ ofurufu le wa ọ.

Awọn ibeere ti a beere nigbagbogbo¶

Jẹmọ awọn itọsọna¶

• Escaped fẹlẹ opoplopo iná, koriko ina iginisonu, ati igberiko omi ojò olugbeja
• Giant Hogweed, Wild Parsnip, ati Hemlock Poison: idilọwọ awọn ijona kemikali ti oorun ṣiṣẹ
• Afẹfẹ afẹfẹ eefin, ikuna igbona ni blizzard, ati ijade fifa omi hydroponic
• Gaasi Silo (nitrogen dioxide) ati ifunfa ọfin maalu olomi: iwalaaye gaasi oko igberiko
• Awọn nọmba pajawiri

Awọn orisun ati osise itoni¶

• Aabo Iṣẹ iṣe ati Isakoso Ilera (OSHA, Orilẹ Amẹrika): *Iwọn Awọn iṣẹ ṣiṣe gedu (29 CFR 1910.266) ati OSHA Logging eTool: Ọwọ Ọwọ, Awọn igi ti a fikọ, Awọn ọpa orisun omi, ati awọn Bucking Binds *.
• ** Iṣẹ igbo ti Amẹrika (USFS):** * Ẹkọ Ikẹẹkọ Ẹwọn ati Crosscut ri Ẹkọ (Atejade 0667-2805-MTDC: 45-Degree Spring Pole Tu, Wedge Mechanics, and Bore Cutting)*.
• ** Ilera ati Alase Aabo (HSE, United Kingdom): *** AFAG 302 (Ipilẹ Chainsaw Felling ati Hung-Up Trees), AFAG 303 (Opa orisun omi), ati AFAG 304 (Cross-Cutting)*.
• **Ile-iṣẹ ti Orilẹ-ede fun Aabo Iṣẹ iṣe ati Ilera (NIOSH / CDC, United States): ** * Itaniji NIOSH: Idilọwọ Awọn ipalara ati Awọn iku ti Awọn olutaja (Atejade No.. 95-101)*.
• ** International Society of Arboriculture (ISA) & Tree Care Industry Association (TCIA):** * ANSI Z133 Awọn ibeere Aabo fun Awọn iṣẹ Arboricultural (Rigging, Redirect Blocks, and Personal Protective Equipment)*.