孤岛工作面沿空掘巷围岩控制技术在煤矿的实践与应用
Practice and Application of Surrounding Rock Control Technology in Gob Driving in Isolated Island Working Face in Coal Mines
摘要:
本论文通过对棋盘井煤矿I020908工作面回风顺槽孤岛工作面沿空掘巷的支护条件、施工工艺的认真分析；实验测试了9#煤及顶板岩石的煤岩物理力学参数；数值模拟了I020908工作面采场及回风顺槽沿空掘巷巷道应力分布规律，结合现场调研和理论分析，确定了棋盘井煤矿I020908工作面回风顺槽沿空掘巷合理巷道煤柱宽度；同时，提出了棋盘井煤矿I020908工作面回风顺槽锚网索(梁)喷联合支护技术，并进行了现场实施；基本掌握了采用锚网索(梁)喷联合支护下的煤巷变形的基本规律，为矿井的安全生产提供了技术支撑和科学依据。
Abstract:
This paper carefully analyzes the support conditions and construction technology of the gob-side roadway in the I020908 working face of Qipanjing Coal Mine, and the physical and mechanical parameters of coal and rock of 9# coal and roof rock are tested; Numerical simulation of the stress distribution law of the I020908 working face stope and the gob-side roadway with return air, combined with on-site investigation and theoretical analysis, the reasonable coal pillar width of the roadway with the return air along the gob of the I020908 working face in Qipanjing Coal Mine is determined. At the same time, it puts forward the combined support technology of anchor-net-cable (beam)-spray joint support technology along the return air groove of Qipanjing Coal Mine I020908 working face, and carries out on-site implementation; The basic law of roadway deformation provides technical support and scientific basis for mine safety production.
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