The presence of geological units of gas under control of rock mechanical properties, fault distribution, seam thickness.
各自然地质单元瓦斯赋存情况受其围岩力学性质、断层分布、煤层厚度等地质因素控制。
Tectonic group patterns of coal seam depended on tectonic stress field, mechanical properties of rock of coal-bearing formation and surrounding environments.
煤层的构造组合型式在很大程度上取决于构造应力作用、含煤地层的岩石力学性质和应变环境等。
The finite element results and experimental results of the fracture properties of concrete with different ages and initial seam height ratios are compared.
分析比较了不同龄期和不同初始缝高比时普通混凝土的开裂性能，并与试验结果进行了对比。
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