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在古构造应力场的作用下,地质构造演化对煤层结构的变形破坏起到作用,它主要影响的是煤体的结构和力学性质,以及瓦斯的生成和保存。已存在的地质构造在现今构造应力场的作用下,对于煤与瓦斯突出有直接控制作用。采用有限元数值模拟软件ADINA,模拟了一次构造作用下,煤层褶皱构造的形成过程,分析了构造形成过程中的煤层破坏情况。同时模拟了在煤层褶皱形成后受现代构造应力场作用下煤层的破坏情况及地应力的分布规律。为有效的防治煤与瓦斯突出提供了参考依据。
Under the influence of palaeotectonic stress field, the evolution of geological structure plays an important role in the deformation and destruction of coal seam structure. Its main influence is on the structure and mechanical properties of coal and the generation and preservation of gas. The existing geological structure under the current tectonic stress field has a direct control over coal and gas outburst. The finite element numerical simulation software ADINA is used to simulate the formation process of coal seam fold structure under one tectonism and to analyze the coal seam destruction in the process of tectonic formation. At the same time, the destruction of coal seam and the distribution of ground stress under the influence of modern tectonic stress field after the formation of coal seam folds are simulated. It provides a reference for effective prevention and control of coal and gas outburst.