软岩巷道帮锚索加强支护技术研究
Study on Side Cable Reinforced Support Technology of Soft Rock Roadway
摘要: 为解决长治某矿91-103工作面运输顺槽地处深部且软岩巷道顶板下沉，两帮变形难题，以该工作面3号煤层软岩巷道为研究对象，采用FLAC3D数值模拟方法，对比分析原有支护方案与帮锚索加强支护方案的围岩变形与应力分布特征。研究表明，通过帮锚索加强支护方案顶板下沉量减少593.56 mm；底鼓减少58.79 mm；左帮减少452.96 mm；右帮减少450.79 mm，模拟显示该支护方式对于解决工作面软岩巷道围岩变形严重的问题具有显著且实际的效果。
Abstract: To address the challenges of roof subsidence and rib deformation in the deep soft rock roadway of the 91-103 working face haulage gateway in a Changzhi coal mine, this study takes the soft rock roadway of the No. 3 coal seam in this working face as the research object and uses the FLAC3D numerical simulation method to compare and analyze the surrounding rock deformation and stress distribution characteristics of the original support scheme and the side cable reinforced support scheme. The results show that the roof subsidence is reduced by 593.56 mm, floor heave by 58.79 mm, left rib deformation by 452.96 mm, and right rib deformation by 450.79 mm through the side cable reinforced support scheme. Simulations demonstrate that this support method has a significant and practical effect on solving the severe surrounding rock deformation of soft rock roadways in the working face.
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