鹤煤五矿深部车场工程耦合支护设计及应用  

Coupling Support Design for Deep Pit Bottom in No.5 Coal Mine of Hebi Coal Industry Group and Its Application

作　　者：齐干[1] 李占金[2] 郭志飚[3] 

机构地区：[1]北京市地质研究所,北京100120 [2]河北联合大学矿业工程学院,河北唐山063009 [3]中国矿业大学深部岩土力学与地下工程国家重点实验室,北京100083

出　　处：《采矿与安全工程学报》2011年第4期553-559,共7页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展计划(973)项目(2006CB202200);国家自然科学基金重大项目(50490270);长江学者和创新团队发展计划项目(IRT0656)

摘　　要：为解决鹤煤五矿深部软岩巷道的支护难题,以该矿三水平延深车场工程为例,采用现场地质调查、室内试验、数值模拟、理论分析和现场监测等方法,分析了巷道工程地质条件和围岩特性,评价了深部工程难度.根据软岩工程力学理论确定了巷道围岩类型为HJS(高应力-节理化-膨胀性)复合型软岩,具有ⅠABⅡABDⅢAE复合型变形力学机制,分析了控制对策并进行了数值模拟研究,提出了具体的耦合支护形式、支护参数及合理的施工过程.现场施工效果和矿压监测结果表明:锚喷网索+底角注浆锚杆+柔层单桁架耦合支护形式可有效控制鹤煤五矿深部软岩巷道的大变形,确保巷道的长期稳定和安全使用.In order to solve the support difficulties of deep soft rock roadways in No. 5 Coal Mine of Hebi Coal Industry Group, taking the extending pit bottom engineering of Horizon 3 in the mine as an example, we analyzed the geological conditions and characteristics of surrounding rock, and evaluated the deep engineering difficulties firstly, by means of the field geological investigation, laboratory test, theoretical analysis, numerical simulation and on-site monitoring. The type of the roadway surrounding rock is determined to be high stress-jointed-swelling soft rockmass, with Ⅰ°Ⅱ°ABDⅢ°compound deformation mechanical mechanism, according to the theory of soft rockmass engineering mechanics. Then the corresponding control countermeasures were analyzed by theoretical analysis and numerical Simulation. Finally, the specific coupling support modes and parameters, and the appropriate construction process were put forward. The field construction and monitoring results show that the coupling support design composed of boltshotcrete-mesh-cable, base angle grouting bolt, and flexible layer truss, can effectively control the large deformations of deep soft rock roadways in the mine and ensure the long-term stability and safety operation of the roadways.

关 键 词：深部巷道 车场工程 交岔点 变形力学机制 数值模拟 耦合支护 

分 类 号：TD353[矿业工程—矿井建设]