穿煤层倾斜巷道围岩弱结构分析及支护技术

Weak Structure of Surrounding Rock and Support Technology in Inclined Roadway Crossing Coal Seam

摘要: 为解决穿煤层倾斜巷道穿层阶段地质条件变化复杂、存在多种巷道围岩弱结构、容易破坏失稳、支护困难的问题，重点分析了巷道穿层过程中存在的典型弱结构类型及其变形破坏特征，并运用数值计算软件FLAC^3D模拟分析了不同围岩弱结构塑性区分布及变形规律，进而确定了对不同弱结构进行加强支护的具体方案，并成功应用于工程实践。
- 穿煤层 /
- 倾斜巷道 /
- 弱结构 /
- 加强支护 /
- 数值模拟 /
- 巷道支护
Abstract: In order to deal with the problems of complex geological conditions and a variety of surrounding rock weak structures and easy to destroy instability and support difficulties during the inclined tunnel in crossing coal seam, we focus on analyzing type of surrounding rock weak structures and its deformation and failure characteristics. Further, we analyze the law of the plastic zone distribution and deformation of different surrounding rock weak structures by using the Numerical simulation software FLAC^3D, and then determine the concrete plans to reinforce supporting in different surrounding rock weak structures. The plans were applied to the engineering practice successfully.
- crossing coal seam /
- inclined tunnel /
- weak structure /
- reinforced support /
- numerical simulation /
- roadway support

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