CAJ | 학술논문

在鲁新煤矿巷道断面实测相对收敛位移的基础上，采用弹性位移反分析方法对该巷道围岩的初始应力和围岩参数进行数值反演。利用反演结果进行数值模拟计算，并将所得测点间的相对位移和实测结果进行对比，两者之间吻合较好，说明采用位移反演法进行地应力还原是可行的。根据数值模拟结果和实地现场观测对该矿区在软岩巷道开挖后出现巷道围岩收敛位移大、底鼓、对砌开裂和锚杆受力效果不好等现象的原因进行分析，并对巷道的支护设计和施工给出建议。
재로신매광항도단면실측상대수렴위이적기출상，채용탄성위이반분석방법대해항도위암적초시응력화위암삼수진행수치반연。이용반연결과진행수치모의계산，병장소득측점간적상대위이화실측결과진행대비，량자지간문합교호，설명채용위이반연법진행지응력환원시가행적。근거수치모의결과화실지현장관측대해광구재연암항도개알후출현항도위암수렴위이대、저고、대체개렬화묘간수력효과불호등현상적원인진행분석，병대항도적지호설계화시공급출건의。
This paper, based on the relatively measured convergence displacement of roadway sections at Luxin eoalmine,used the elastic displacement backward analysis method to make a numerical inversion of initial stress and parameters of surrounding rock of the roadway. The numerical simulation was performed in accordance with the above backward analysis data. The comparison between the relative displacement of monitoring points and the simu- lated data was made, revealing the good agreement between them. The result shows that the displacement inversion method used for the ground stress redu~tt6n is feasible. Finally,according to the results of numerical simulation and in situ observations, the reasons Why these phenomena, such as the big surrounding rock convergence displacement, the floor heaving, lining cracking and bad effect of the bolt force occurred were analyzed, and providing the proposals for the design and construction of roadway supports.