** Ceeb Toom Tseem Ceeb:** Qhov no yog cov ntawv sau keeb kwm, tsis suav nrog lub tshuab tam sim no, kev ntsuas kev pheej hmoo lossis phau ntawv khiav haujlwm. Tus naj npawb ntawm cov kiv puag ncig, mob stroke, kev hloov pauv, quab yuam, coefficients thiab tabular qhov tseem ceeb yuav tsum tau kuaj xyuas raws li cov cai siv tau, cov chaw tsim khoom cov ntaub ntawv thiab cov khoom siv tshwj xeeb.

Cov ntawv no tsis yog lub tshuab muab lossis cov ntaub ntawv pabcuam ntawm Savo Kusić. Qhov kev thov tam sim no yog tsom rau qhov rais, qhov rooj thiab cov kev daws teeb meem cuam tshuam.

Tus naj npawb ntawm kev hloov pauv thiab mob stroke loj

Tus naj npawb ntawm cov kiv puag ncig ntawm cov ncej txiav txim siab cov khoom tsim tau ntawm cov khoom siv. Qhov ntau dua tus naj npawb ntawm cov kiv puag ncig, ntau dua cov khoom tsim tau ntawm tib qhov loj ntawm lub gate lub stroke. Txawm li cas los xij, yam tsis muaj kev suav ua ntej, tus naj npawb ntawm cov kiv puag ncig ntawm cov ncej yuav tsum tsis txhob nce ntxiv, vim qhov no ua rau muaj kev nce loj hauv ntsug inertial quab yuam, uas tuaj yeem ua rau tsis ua haujlwm. Tus naj npawb ntawm cov kiv puag ncig ntawm cov ncej yog los ntawm 200 mus rau 350 ib feeb hauv cov neeg saib xyuas niaj hnub. Lub thav duab nrog cov tensioned saws txav nce thiab nqis thiab nyob rau hauv txoj kev no cov cav raug txiav. Qhov kev ncua deb ntawm gater thav duab mus los ntawm nws qhov qis tshaj mus rau qhov siab tshaj plaws yog hu ua gatter stroke size.

Qhov loj ntawm cov hlab ntsha tawg cuam tshuam rau kev tsim khoom ntawm tus neeg saib xyuas. Nrog rau kev nce hauv kev mob stroke, nrog tib tus naj npawb ntawm cov kiv puag ncig, cov khoom lag luam ntawm cov gater nce. Qhov luaj li cas ntawm cov hlab ntsha tuaj yeem nce ntxiv yog tias kev suav ua ntej ua ntej.

Kauj Ruam - Kev hloov pauv yog qhov txav ntawm cov cav thaum lub sijhawm tig tag nrho ntawm lub qhov rooj nkag. Cov kauj ruam loj los ntawm lub zog ntawm lub cev muaj zog tuaj yeem txiav txim siab los ntawm cov qauv:

Kev Hloov Pauv thiab Cov Qauv Keeb Kwm

Δ =140N / Σhn mm qhov twg Δ yog cov kauj ruam ntawm lub cav lossis kab teeb thaum lub sij hawm tig tag nrho ntawm lub qhov rooj ncej, mm; N - lub cev muaj zog k x s; Σh - qhov sib npaug ntawm qhov siab ntawm qhov txiav hauv nruab nrab ntawm qhov ntev ntawm lub cav; h - qhov sib npaug ntawm qhov siab ntawm qhov txiav hauv nruab nrab ntawm qhov ntev ntawm lub cav, m; n - tus naj npawb ntawm cov kiv puag ncig ntawm lub rooj vag ncej, min.

Cov txiaj ntsig ntawm qhov siab ntawm qhov txiav tuaj yeem suav tau raws li daim ntawv Σh = α x dsr x z, qhov twg α yog tus coefficient, uas qhia qhov nruab nrab qhov siab ntawm qhov txiav thiab qhov twg yog coj0,65-0,80thaum lub cav txiav. Thaum lub nqaj raug txiav, qhov coefficient no sib npaug rau kev sib koom ua ke; dsr- txoj kab uas hla ntawm nruab nrab ntawm lub cav; z - tus naj npawb ntawm cov saws nruj hauv tus ncej.

Rau kev txiav ntoo qhib, qhov luaj li cas ntawm qhov hloov pauv yog60%, rau larch -85%, rau tsab ntawv -70%rau birch -80%los ntawm offsets rau ntoo thuv thiab spruce muab nyob rau hauv lub rooj1.

Tabular cov ntaub ntawv rau ntsug gaters

Table 1: Cov ntaub ntawv nyob rau hauv ntsug gaters nrog stroke 500 mm thaum txiav ntoo thuv thiab spruce
D 10-12 13-14 15-16 17-18 19-20 21-22 23-24 25-26 27-28 29-30 31-32 33-34 35-36 37-38 39-40 41-44 45-48
α
0 33 33 31 28 26 24 22 20 19 17 16 15 14 13 12 12 11
100 – – 32 29 26 25 23 20 19 17 16 15 14 13 12 12 11
120 – – – 30 27 26 24 21 19 17 16 15 14 13 12 12 11
140 – – – – 28 26 24 22 20 17 16 15 14 13 12 12 11
160 – – – – – 27 24 23 21 18 17 16 15 14 13 12 11
180 – – – – – – 25 24 22 19 17 16 15 14 13 12 11
200 – – – – – – 24 23 20 18 16 15 14 13 13 11
220 – – – – – – – – 24 21 19 17 15 15 13 13 11
240 – – – – – – – – – 22 20 18 16 15 14 13 11
260 – – – – – – – – – – 21 19 17 16 14 14 12
280 – – – – – – – – – – – 21 18 16 15 14 12
300 – – – – – – – – – – – – 20 16 16 15 12