多效应场作用下逆断层突水主控因素研究

发布时间：2018-09-03 19:52

【摘要】：采动过程中逆断层的活化突水是影响煤矿安全生产的主要因素之一,首先运用SPSS软件建立了以断层倾角(A)、断层落差(B)、含水层水压(C)、破碎带宽度(D)、保护煤柱宽度(E)5个因素每个因素5个水平的正交模拟试验表,然后运用FLAC~(3D)进行数值模拟研究分别考查逆断层在不同正交试验方案下断层带同一位置处的最大剪应力。最后运用极差分析法和方差分析法对试验结果进行分析。结果表明:(1)以上5个因素对试验结果的影响程度由强到弱依次是CABED。(2)断层带最大剪应力分别随着断层落差、含水层水压、破碎带宽度的增加而增加,随着保护煤柱宽度和断层倾角的增大而减小,但当破碎带宽度达到某一数值后断层带最大剪应力基本维持在一个相对稳定的状态,这说明断层破碎带宽度对逆断层活化的影响是有一定限度的。
[Abstract]:The activation of reverse faults and water inrush during mining is one of the main factors affecting the safety of coal mine production. Firstly, using SPSS software, an orthogonal simulation test table is set up to protect coal pillar width (E) with 5 factors, 5 levels per factor, and 5 levels, with the width of (B), aquifer water pressure (C), fracture zone width of (B), aquifer falling from fault dip angle (A), fault, (B), fracture zone width, 5 factors and 5 levels. Then FLAC~ (3D) is used to simulate the maximum shear stress of the reverse fault at the same location of the fault zone under different orthogonal test schemes. At last, the range analysis method and variance analysis method are used to analyze the test results. The results show that: (1) the maximum shear stress of CABED. (2) fault zone increases with the increase of fault drop, aquifer water pressure and fracture zone width, respectively. The maximum shear stress of the fault zone is maintained in a relatively stable state when the width of the broken zone reaches a certain value with the increase of the width of the protection coal pillar and the dip angle of the fault. This indicates that the width of fault fracture zone has a certain limit on the activation of reverse faults.
【作者单位】：山东科技大学矿业与安全工程学院;矿山灾害预防控制国家重点实验室培育基地;
【基金】：国家自然基金项目(51379119,51109124,51509149,41472281)
【分类号】：TD745

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