区段间相邻巷道锚杆-锚索联合支护协调作用机理研究  

Coordination mechanism of bolt-cable combined support between adjacent roadway sections

作　　者：王志强[1,2,3] 苏越 苏泽华 黄玄皓 韩燕波 李飞 张为[1,2,3] WANG Zhiqiang;SU Yue;SU Zehua;HUANG Xuanhao;HAN Yanbo;LI Fei;ZHANG Wei(School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;Beijing Key Laboratory for Precise 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]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 [3]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 [4]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》2020年第6期1152-1161,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：基于错层位区段间相邻巷道联合支护技术对锚杆-锚索作用机理展开研究。以新巨龙煤矿一采区煤岩体为研究对象,采用FLAC3D数值模拟软件研究分析上区段沿顶巷道侧帮锚索参数对侧向煤体应力分布和力学性质的影响;确定合理的侧帮锚索和沿底巷道顶板支护参数;并对采动影响下沿底巷道支护效果进行验证。结果表明:侧帮锚索与锚杆支护参数“配合”效果明显,锚固体形成受力均匀的似“梁”结构体;锚固体力学性质得到提高,为沿底巷道顶板支护提供了理论基础;上区段沿顶巷道侧帮锚杆-锚索的联合支护作用可以为下区段沿底巷道顶板支护构件提供较强的锚固力和较为稳定的围岩环境,更有利于发挥下区段沿底巷道顶板锚杆的悬吊机制,使厚煤层沿底巷道的顶板维护更为有利。Based on the combined support technology of adjacent roadways in external-misaligned stagger arrangement,the mechanism of bolt and cable has been researched.With the coal and rock mass in the first mining area of Xinjulong Coalmine as the research object,the numerical simulation software of FLAC3D has been adopted to analyze the influence of the side anchor cable parameters along the roof of the upper section on the lateral coal body stress distribution and mechanical properties.And the reasonable value of the side anchor cable and the roof support parameters along the lower headentry has been determined.Then the supporting effect of the lower headentry under the influence of mining has been verified.Result shows that:the supporting parameters of the side anchor cable and bolt have obvious effect,with the bolt and anchor body forming a uniform beam-like structure.The mechanical properties of the anchorage zone are consequently improved,which provides a theoretical basis for the roof support along the lower headentry.It is considered that the combined bolt-cable support in the upper section along the sideways can provide a stronger anchoring force and a stable surrounding rock environment for the roof bolts along the bottom roadway in the lower section,which is more conducive to the exertion of suspension mechanism of the roof bolts and roof maintenance the of lower headentry in thick coal seam.

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]