發(fā)布時間：2018-04-10 16:11

  本文選題：縱向采空區(qū)群 + 動態(tài)失穩(wěn)��； 參考：《礦業(yè)研究與開發(fā)》2017年04期

【摘要】：基于細(xì)觀損傷力學(xué),運用RFPA巖石破裂過程分析軟件,建立縱向采空區(qū)群動態(tài)失穩(wěn)的等效數(shù)值模型,研究單列和多列縱向采空區(qū)群的動態(tài)失穩(wěn)演化過程。結(jié)果表明:相比于單列縱向采空區(qū)群,多列縱向采空區(qū)群的頂板更易發(fā)生破壞,巖體結(jié)構(gòu)的抗破壞能力較弱;單列和多列縱向采空區(qū)群動態(tài)失穩(wěn)具有不同的演化過程,即單列縱向采空區(qū)群按照空區(qū)群左右兩側(cè)幫壁、頂(底)板到整體的順序失穩(wěn)破壞,多列縱向采空區(qū)群按照間柱、空區(qū)群頂(底)板到左右兩側(cè)幫壁的順序失穩(wěn)破壞。
[Abstract]:Based on the mesoscopic damage mechanics, the equivalent numerical model of dynamic instability of longitudinally mined-out area group is established by using RFPA software. The dynamic instability evolution process of single and multi-row longitudinally mined-out area groups is studied.The results show that the roof of multi-row longitudinally mined-out area group is more vulnerable to failure than that of single row longitudinally mined-out area group, and the failure resistance of rock mass structure is weak, and the dynamic instability of single-row and multi-row longitudinally mined-out area group has different evolution process.That is, the single row longitudinal goaf group is destroyed according to the sequence of the left and right sides of the empty area group, the top (bottom) plate to the whole, and the multi-row longitudinal goaf group according to the column, the top (bottom) plate of the empty area group to the left and right sides of the side wall.
【作者單位】： 華南理工大學(xué)土木與交通學(xué)院;華南理工大學(xué)安全科學(xué)與工程研究所;
【基金】：國家重點研發(fā)計劃項目(2016YFC0600802) 國家自然科學(xué)基金資助項目(51174093,51574013,51374035)
【分類號】：TD325.3

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