复杂破碎巷道支护难度分级方法研究与应用  

Study and Application of Support Difficulty Grading Method for Roadway in Jinchuan No.3 Mining Area

作　　者：李德贤 王文杰[3] 黄永祥[4] 张鹏强 朱文韬 LI Dexian;WANG Wenjie;HUANG Yongxiang;ZHANG Pengqiang;ZHU Wentao(State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization,Jinchang 737100,China;Jinchuan Nickel and Cobalt Research and Engineering Institute Co.,Ltd.,Jinchang 737100,China;School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;No.3 Mining Area,Jinchuan Group Co.,Ltd.,Jinchang 737100,China)

机构地区：[1]镍钴资源综合利用国家重点实验室,甘肃金昌737100 [2]金川镍钴研究设计院,甘肃金昌737100 [3]武汉科技大学资源与环境工程学院,湖北武汉430081 [4]金川集团股份有限公司三矿区,甘肃金昌737100

出　　处：《金属矿山》2024年第9期51-57,共7页Metal Mine

基　　金：国家自然科学基金项目(编号:51974206);镍钴资源综合利用国家重点实验室开放基金项目(编号:GZSYS-KY-2021-024)。

摘　　要：为解决复杂破碎巷道支护方式选取缺乏定量化方法和标准、支护效果不稳定等难题,以金川三矿区为例,基于灾变耦合原理得到巷道变形破坏耦合路径,选取岩石强度应力比、矿岩破碎系数及岩体结构等级作为巷道支护难度评价指标,利用改进的LEC分级评价方法提出了巷道支护难度分级方法,将支护难度划分为Ⅰ~Ⅳ级。根据所提支护难度分级方法对该矿1 438 m分段进行了快速分级,并依据不同分级结果采取了对应的支护策略,支护效果良好。研究表明:所提巷道支护难度分级方法能够快速实现复杂破碎巷道支护级别分类,具有较高可靠性,为实现巷道安全、经济支护目标提供了技术支撑。In order to solve the problems of lack of quantitative methods and standards for the selection of complex crushed roadway support methods,and unstable support effects,taking Jinchuan No.3 Mining Area as an example,based on the principle of catastrophic coupling,the coupling path of roadway deformation and failure was obtained,and the rock strengthstress ratio,ore rock crushing coefficient and rock mass structure grade were selected as the evaluation indicators of roadway support difficulty,and the improved LEC grading evaluation method was used to propose the roadway support difficulty grading method,and the support difficulty was divided intoⅠ~Ⅳgrades.According to the proposed support difficulty grading method,the 1438 m segment of the mine was quickly graded,and the corresponding support strategy was adopted according to different grading results,and the support effect was good.The study results show that the proposed roadway support difficulty grading method can quickly realize the classification of complex crushed roadway support level,and has high reliability,which provides technical support for achieving the goal of safe and economical roadway support.

关 键 词：分级支护 复杂巷道 破碎岩体 围岩变形 高地应力 

分 类 号：TD353[矿业工程—矿井建设]