外错式区段间相邻巷道锚杆联合支护作用机理研究  

Mechanism of combined support by bolts for adjacent roadways in the external-staggered split-level panel layout

作　　者：王志强[1,2,3,4] 苏越 苏泽华 吕文玉 WANG Zhiqiang;SU Yue;SU Zehua;LYU Wenyu(School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;State Key Laboratory of Coal Resources in Western China,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;Beijing Key Laboratory for Precision Mining of Intergrown Energy and Resources,China University of Mining and Technology-Beijing,Beijing 100083,China;National Demonstration Center for Experimental Safe Coal Mining and Geological Guarantee Education,China University of Mining and Technology-Beijing,Beijing 100083,China;China Coal International Engineering Design and Research Institute,Beijing 100120,China)

机构地区：[1]中国矿业大学(北京)能源与矿业学院,北京100083 [2]西安科技大学西部煤炭绿色安全开发国家重点实验室,陕西西安710054 [3]中国矿业大学(北京)共伴生能源精准开采北京市重点实验室,北京100083 [4]中国矿业大学(北京)煤炭安全开采与地质保障国家级实验教学示范中心,北京100083 [5]中煤国际工程设计研究总院有限公司,北京100120

出　　处：《采矿与安全工程学报》2021年第1期58-67,共10页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金青年科学基金项目(51404270);国家自然科学基金项目(51774289,52074291);中央高校基本科研业务费专项基金项目(2011QZ06);西部煤炭绿色安全开发国家重点实验室开放基金项目(SKLCRKF1903)。

摘　　要：根据错层位外错式相邻巷道"一高、一低、水平错距"的空间结构特点,提出联合支护技术,并对侧帮锚杆作用机理展开研究。采用FLAC^(3D)数值模拟软件研究分析沿顶巷道侧帮锚杆参数对锚固体力学性质的影响,并确定侧帮锚杆支护参数合理取值;对不同布置情况下巷道支护效果进行对比分析。结果表明:通过向沿顶巷道实体煤侧帮安设锚杆可以提高锚固体力学性能,对下区段沿底巷道顶板和采空区侧帮的煤体起到良好的保护作用,有利于沿底巷道侧帮煤体的稳定以及顶板锚杆锚索悬吊作用的实现,使厚煤层沿底巷道的围岩维护更为有利。In view of the three-dimensional spatial structure characteristics of adjacent roadways in the external-staggered split-level panel layout,a combined support technology is proposed and the mechanism is researched.The influence of side bolt parameters on the mechanical properties of the anchorage body has been studied through numerical simulation with FLAC^(3D),and the reasonable value of the side bolt parameters has been determined.The comparative analysis of the supporting effect under different layout conditions has been conducted.The results show that the mechanical properties of the anchorage body can be improved by installing bolt on the side of the upper roadway,which has a protective effect on the coal of the roadway roof and side wall.It is beneficial to the stability of the side coal body of the roadway along the bottom and the realization of the suspension effect of the roof bolt and anchor cable,thus making the surrounding rock maintenance of the roadway along the bottom in the thick coal seam more favorable.

关 键 词：错层位 外错式 相邻巷道 联合支护 

分 类 号：TD353[矿业工程—矿井建设]