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基于三维地应力场反演的宏观区域冲击危险性评价

Study on mine rock burst prevention and control with roof and sidewalls control in mine deep seam gateway

  • 摘要: 为了提高采区宏观区域冲击危险评价精度,基于三维地应力场反演技术开展了相关研究,并以集贤煤矿西二采区为研究对象,在地质构造特征分析、煤岩物理力学性质和矿井地应力实测的基础上,根据多元线性回归原理对三维地应力场进行数值模拟反演,获得了研究区域内三维地应力场的相关信息;综合考虑构造应力、采动影响等因素,实现了对采区宏观区域的冲击危险评价,指导现场进行开拓布局优化,降低潜在冲击危险,有利于指导矿井的安全生产。

     

    Abstract: In order to improve the safety of the rock burst prevention and control in the mine deep seam gateway, a theoretical analysis, numerical simulation, site measurement and other comprehensive study method were applied to establish a theoretical model of the space structure of the surrounding rock along in the deep seam gateway. The failure features of the differential sub-block in the deep seam gateway were analyzed. A model type of the rock burst failure occurred from the wedge wall structure of the roof and sidewalls along in the deep seam gateway was studied and obtained. With the deep strength rock burst danger seam gateway in Tengdong Mine as the background, an optimized design and engineering practices on the roof and sidewall support along the deep seam gateway were conducted based on the rock burst prevention and control. Thus a safety mining and driving of the driving face with the strength rock burst danger was realized and the rationality of the theoretical model was approved in order to provide the references to the coordinated control of the roof and sidewalls along the deep seam gateway with the rock burst danger.

     

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