本文選題：采動影響 + 斷層損傷變量　； 參考：《煤炭學(xué)報》2017年S1期

【摘要】：為研究采動誘發(fā)斷層損傷滑移演化規(guī)律,結(jié)合現(xiàn)場微震監(jiān)測,引入斷層損傷變量作為評價斷層滑移失穩(wěn)的指標(biāo)。并運用正交模擬試驗,對斷層損傷變量影響因素進(jìn)行敏感性分析。研究表明:工作面開采影響下斷層損傷滑移分為斷層損傷起裂、斷層擴展貫通、斷層滑移錯動3個階段。隨工作面靠近斷層,斷層損傷變量呈逐漸增大趨勢。斷層損傷變量受開采因素、斷層因素、地應(yīng)力水平3者綜合影響。確定開采因素中工作面距斷層距離、工作面斜長對斷層損傷變量影響為高度顯著,采厚影響不明顯。斷層因素中斷層傾角、斷層內(nèi)摩擦角對斷層損傷變量影響為高度顯著,斷層內(nèi)聚力為一般顯著,其它斷層因素影響不明顯。地應(yīng)力水平中側(cè)壓系數(shù)對斷層損傷變量的影響高于埋深。
[Abstract]:In order to study the evolution law of fault damage and slip induced by mining, combined with field microseismic monitoring, fault damage variable is introduced as an index to evaluate fault slip instability. The influence factors of fault damage variables were analyzed by orthogonal simulation test. The results show that the fault damage and slip can be divided into three stages: fault damage and fracture initiation, fault expansion and penetration, and fault slip dislocation under the influence of working face mining. With the face close to the fault, the fault damage variable increases gradually. The damage variables of fault are affected by three factors: mining factor, fault factor and in-situ stress level. It is determined that the influence of the distance from the face to the fault and the inclined length of the working face on the damage variable of the fault is significant, but the influence of mining thickness is not obvious. Among the fault factors, the influence of fault dip angle and fault friction angle on fault damage variables is highly significant, fault cohesion is generally significant, and other fault factors have no obvious effect. The influence of lateral pressure coefficient on the damage variable of fault is higher than that of buried depth in in-situ stress level.
【作者單位】： 中國礦業(yè)大學(xué)(北京)資源與安全工程學(xué)院;中國礦業(yè)大學(xué)(北京)煤炭資源與安全開采國家重點實驗室;中國礦業(yè)大學(xué)(北京)力學(xué)與建筑工程學(xué)院;
【基金】：國家重點研發(fā)計劃資助項目(2016YFC0801401,2016YFC0600708)
【分類號】：TD325

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