表2数值模型屮各岩层力学参数Table2Themechunicalparaiieter±iofnickstraLilithenullerkalniudek岩性弾性摸SA；Po泊松比体积力/US•in抗爪强度AlPa抗拉强度舸Fii内摩擦ft/(a)表土层l【hO(h202()0010粉砂岩4K.0(h2527604.U035细砂岩50.00.3027704.6035白砂岩50.00.2727704.6035黏上岩乩。(k2(}?5151.50煤层15.0(k.W1315i.no25充填林4.5(k222050.25〔匚3R1JK土幅理力Table1Physicalandmecbanicalpantmeterofsoils岩层厚度/E/"(t.l-lc/MPa0c>mGPa表土200,030.3219700.12524沙粘土200.050.3020000-14515采出率扬0%时模拟方案Table2Simulatepresetofrecoveryrateat50%方案采宽/m留宽/m采出条带/个110101222020ea30304衷3擡岩的物理-力学参数Table3Parametersofphysics-mecliaticsofoverlyiugstrata序号岩性层厚/m标髙/rn,；4单向抗压岩石单I'd抗壮强度。刖內曲性模屁g/GVa內聚力HMFs内裁擦角Wit常度/k^-iii'17芥.0-2S&0狙加L802.262424皿L&红层黏丄4.7-325.018.001.202.2020245015皿化砂甩岩以-妙7私曲1.421.4CI3.帕272500143.0-339i34U901.60L.604.5U28257D13石英砂岩14-3-3423J.73II0041273012砂质泥岩6.2-^56,6iekftoO.fiO1.201.50势2序鶉11泥崭6.5-丁血B33.70L26LSI)2.32?7252010粉砂岩1.5-369.3S905Z021602.SO32257D0屮砂岩5.6-S70,R1的，列3.in10.ICrr2颐3泥威粉砂岩1.8-376.4罠421505.663025007环t煤1.0-37&22aooI.200SO甸14006粉an砂岩II.8-S79.21.12.203525005泥#;3.4-38J.026.601701682725204砂质泥盲&0-384.43d902.70L.402.20322500•Ci$_1煤3.4-WCL4加i(W1.20ft.处X]14002屮醉岩5.5-393,b121.ffl5.14220H5(J加26001粉圳砂岩5.5-W9.5泊4flX12£205.50255D^5.1模拟卄采棋型的煤岩提及物理力学性质-览衣Table.5.1Thefciuioftliepliysical-mechaiiicalpiopeiiiesofrockofthe2D・^aFLAG'"numericnlcalculationmodel岩性厚度/m弹性模昼/MPa泊松比抗压强度7MPa抗拉强度/MPa重力密庭/xlt/'N/n?内摩擦ffj/枯結力/MPa松散层60400.230,080.00041.87IS0,0023中粗砂廿43215000(132780.6922.559522,93泥岩310187000.43130.07422.75401.53中粗砂廿34013400(1326240.9952.559+73.82泥岩220187000431301152.75321.91中粗砂岩248222000195006S52.63523.29砂质泥岩36122000.233302932.51432.19中细砂岩5288000131031IS2614554.73泥岩13017300044-1901692659303.27中粗砂岩1IE272000.24S81172.669495.37砂岩25215400044-15201522659153.36粉砂岩22122000.23330.5842.51193.16砂岩122262000.21450.4492.749443.07細砂岩25216000.4415.20.1682699253.82煤层212000.2614.50.0578130520130细砂岩130270000.23352.322.669+57.83表1数值模拟计算模壘的岩体力啓蓼敷岩性琴度hn弹性模&/GPa泊松比存重/抗压强rmJi/MPa抗拉强内摩擦度/MPa角/(°)表土层19005(1320(1700110粉砂岩20200252780839屮砂岩S5300272780836细砂岩1525ft32180837煤层4L5ft3L320225中砂岩站400272780836表2充填材料力学参数抗压熾度弾性模M抗拉强度.剪切强度充填体胖内摩擦角/MPa/GPa/MPa/MPa重/t*iii^叮'4045ft2522135表1模型内各岩层赋存特征及九学参数Table1Thecharacteristicandmechanicalparametersofstratainthenumericalmod-el岩性厚度/til弹性模量VCPEI泊松比容重ZkN■til3内摩心抗拉强度/MPa粘聚力ZMPn备注«±60L50292050.050.094分层厚度3m砂岩103乩00.2027325.0010.000上关键层泥岩127.20.222525L203.000分层厚度2m中秒519.00.1727322.105.000亚关键层泥岩137.20.202525L203.000分层厚度2m煤38.80.2313180.80L500煤层砂岩723.00.1827302.10S.000底板表1FLAC-模拟中关键物聊力学参数Tab.1Mechanicalpar刑tietersofthecoalseajnandstrataintheFLAC3D力学M度加弹性模内聚力内磨擦密度/孔隙压力/MPa备注特牲量/GPa/MPa角r(k如1冷老底9.42010302700直接底0.6710302400煤S31.5181400总接顶91332326001£帀！3.82010302700主并键层覆岩143232600流体21000衷］岩层物理力学鬱歆岩ft抗拉也度抗压弛度泊松比嘴叫模就内摩搏阳内聚力体积橫呈訥切模呈血儿创『|/MFIL/MFIL/Mt*a/(")J]0TIWPa/JO'MPs恻會层22.42530o.so8.60.6[)11.40272...
