房柱采空區(qū)下特厚煤層開采煤巖垮落特征相似模擬試驗(yàn)研究
[Abstract]:In view of the disaster problem caused by overburden collapse migration caused by overburden collapse and migration in Fangzhu goaf, taking No. 13 coal seam top caving face of Jiaogou Coal Mine as engineering background, similar simulation test is used. The characteristics of overburden caving in thick coal seam mining under the roof pillar goaf are analyzed. The results show that there are obvious top coal caving and direct top coal caving in the process of bottom coal mining, which is basically stable at about 0.23 m (23 m); When entering and leaving the coal pillar, the pressure is high, the surrounding rock is broken seriously, and the water inrush and gas outburst may occur through the fracture zone of the old mining area. The results can provide basis and reference for the law of overburden collapse under similar conditions.
【作者單位】: 太原理工大學(xué)采煤工藝研究所;中國(guó)礦業(yè)大學(xué)(北京)煤炭資源與安全開采國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】:國(guó)家自然科學(xué)基金資助項(xiàng)目(51404167) 中國(guó)博士后科學(xué)基金資助項(xiàng)目(2016M590151) 煤炭資源與安全開采國(guó)家重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目(SKLCRSM14KFB08)
【分類號(hào)】:TD823.254
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