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1、工程地質(zhì)模型示意圖模型尺寸:長(zhǎng)420m,高度138m,單位寬度5m。開(kāi)采煤層為31煤層,主要模擬采動(dòng)頂板的冒裂帶高度。表地質(zhì)模型各巖層物理力學(xué)參數(shù)參考數(shù)據(jù)巖石名稱彈性模量(MPa)泊松比粘聚力(MPa)內(nèi)摩擦角(°)抗拉強(qiáng)度(MPa)密度(kg/m3)泥巖6000.282271.62100粗粒砂巖26000.206.8215.42700煤層3000.30.8220.651700中砂巖20000.206.4205.22600砂質(zhì)泥巖7000.282.2271.92300本次模型采用Mohr-Coulomb本構(gòu)關(guān)系。為此,模型材料選項(xiàng)中需要輸入密度ρ、體積模量K、剪切模量G、內(nèi)聚力c、內(nèi)
2、摩擦角φ以及抗拉強(qiáng)度σt。數(shù)值模擬過(guò)程中用到的參數(shù),體積模量K、剪切模量G,可根據(jù)下面的公式進(jìn)行換算:式中:K為體積模量,G為剪切模量、E為彈性模量,v為泊松比。new;--------------------model------------------------------------genzonebrickp0000p142000p2050p30034size60117gro1genzonebrickp00034p1420034p20534p30080size60146gro2genzonebrickp00080p1420080p20580p300138size60129gr
3、o3gro中粗粒砂巖ranz012gro1gro砂質(zhì)泥巖ranz1219gro1gro4煤ranz1925gro1gro砂質(zhì)泥巖ranz2528gro1groK3粗砂巖ranz2834gro1gro砂質(zhì)泥巖ranz3450gro2gro3煤ranz5054gro2gro砂質(zhì)泥巖ranz5480gro2groK4粗砂巖ranz8085gro3gro砂質(zhì)泥巖ranz85106gro3gro粗粒砂巖ranz106114gro3gro砂質(zhì)泥巖ranz114138gro3plblgroup;-------------------巖石屬性-----------------------------
4、---defsetupzs_dens=2800m_dens=1400sn_dens=2580k3_dens=2780k4_dens=2780cs_dens=2780zs_fric=29m_fric=22sn_fric=20k3_fric=26k4_fric=26cs_fric=29zs_coh=7e6m_coh=1.2e6sn_coh=2e6k3_coh=3e6k4_coh=3e6cs_coh=7e6zs_dil=0m_dil=0sn_dil=0k3_dil=0k4_dil=0cs_dil=0zs_tens=34e6m_tens=1e6sn_tens=2e6k3_tens=34e6k
5、4_tens=34e6cs_tens=24e6zs_E=3e9m_E=2e7sn_E=2e8k3_E=2e9k4_E=2e9cs_E=3e9zs_v=0.22m_v=0.32sn_v=0.26k3_v=0.24k4_v=0.24cs_v=0.23zs_bulk=zs_E/(3*(1-2*zs_v))m_bulk=m_E/(3*(1-2*m_v))sn_bulk=sn_E/(3*(1-2*sn_v))k3_bulk=k3_E/(3*(1-2*k3_v))k4_bulk=k4_E/(3*(1-2*k4_v))cs_bulk=cs_E/(3*(1-2*cs_v))zs_shear=zs_E
6、/(2*(1+zs_v))m_shear=m_E/(2*(1+m_v))sn_shear=sn_E/(2*(1+sn_v))k3_shear=k3_E/(2*(1+k3_v))k4_shear=k4_E/(2*(1+k4_v))cs_shear=cs_E/(2*(1+cs_v))endsetupmmpropbulkzs_bulkshearzs_shearcohzs_cohfrizs_frictenszs_tensrangegroup中粗粒砂巖propbulkm_bulkshearm_shearcohm_cohfrim_frictensm_tensrangegroup4煤propbul
7、km_bulkshearm_shearcohm_cohfrim_frictensm_tensrangegroup3煤propbulksn_bulkshearsn_shearcohsn_cohfrisn_frictenssn_tensrangegroup砂質(zhì)泥巖propbulkk3_bulksheark3_shearcohk3_cohfrik3_frictensk3_tensrangegroupK3粗砂巖propbulkk4_bulksheark4_shea