顶板瓦斯尾巷采动变形规律及控制技术

Mining Deformation Laws and Control Technology of Roof Gas Tail Roadway

摘要: 为研究顶板瓦斯尾巷采动变形破坏规律,结合五阳煤矿7605高瓦斯综放面地质条件,采用物理模拟和FLAC^3D数值计算方法,对顶板瓦斯尾巷和回采巷道围岩应力分布和塑性区发育特征进行了分析。结果表明:工作面充分采动后,在煤壁前方10～16 m范围内出现应力叠加集中区,最大竖向应力集中系数2.72。现场采用瓦斯尾巷围岩控制技术后取得了较好效果。
- 综放工作面 /
- 瓦斯尾巷 /
- 相似模拟 /
- 控制技术
Abstract: In order to study the deformation failure laws of the roof gas tail roadway,combining with the geological conditions of the 7605 high gas fully mechanized caving face in Wuyang mine,the physical simulation and FLAC^3D numerical simulation were adopted to analyze the characteristics of the stress distribution and the plastical development in the surrounding rock of the roof gas tail roadway and mining roadway.The results indicated that after the face mining sufficiently,a range of 10～16 m stress composited concentration zone was developed in the front of the coal rib,and the maximum concentration factor of the vertical stress is approximately 2.72.with the employment of gas tail roadway control technology,the field trial has obtained good results.
- fully mechanized caving face /
- gas tail roadway /
- analog simulation /
- control technology

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