过破碎带大断面煤巷顶板裂隙分布特征及支护技术  

Roof Fissure Distribution Characteristics of Large Section Coal Roadway Crossing Broken Belt and Support Technology

作　　者：武建军 何富连[2] 姚再峰 卫文彬 

机构地区：[1]山西中煤华晋能源有限责任公司,山西河津033300 [2]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿安全》2015年第7期204-206,210,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51234005);国家重点基础研究发展计划资助项目(2010CB226802);中央高校基本科研业务费专项资金资助项目(2010YZ02)

摘　　要：为了研究过破碎带大断面煤巷顶板裂隙分布特征及其对回采巷道的影响,以山西省东坡煤矿4#煤层431材料巷在掘进过程中顶板出现的破碎带为工程背景,采用离散元数值分析软件,模拟了431材料巷顶板裂隙分布情况。揭示了顶板裂隙分布特征,提出采用锚网带加固浅部破碎围岩形成的锚固结构对围岩的约束作用,实现有效控制顶板冒落。工程实践验证了该支护指导思想和技术的科学性,并在东坡矿其它工作面的回采巷道推广应用。In order to study fissure distribution characteristics of large section coal roadway crossing broken belt and its influence on extraction roadway,we take the roof fracture zone in Dongpo Coal Mine 431 material roadway in the process of excavating as engineering background,we simulate roof fissure distribution of the 431 material roadway by the discrete element numerical analysis method,and reveal the roof fissure distribution characteristics,anchor cable reinforcement is presented in crushed surrounding rock of shallow formation of the anchorage structure of surrounding rock of constraint function,which realizes the effective control of roof caving. Engineering practice shows that the support with scientific guiding ideology and scientificity can apply in Dongpo mining working face in roadway.

关 键 词：破碎带 离散元 顶板裂隙分布 锚杆支护 巷道支护 顶板冒落 

分 类 号：TD327.2[矿业工程—矿井建设]