高应力软岩巷道变形特征及其支护参数设计  

Deformation Features of Roadway in Highly Stressed Soft Rock and Design of Supporting Parameters

作　　者：李刚[1] 梁冰[2] 张国华[3] 

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]辽宁工程技术大学力学与工程学院,辽宁阜新123000 [3]黑龙江科技学院安全工程学院,黑龙江哈尔滨150027

出　　处：《采矿与安全工程学报》2009年第2期183-186,共4页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(50574048)

摘　　要：为了探讨高应力软岩巷道合理的控制方法,根据吕家坨煤矿深部高应力软岩巷道围岩主要物性参数的实验室测试以及现场围岩变形的观测,利用FLAC3D软件进行了数值模拟,分析了高应力软岩巷道的变形失稳特征.研究表明:高应力软岩巷道控制技术的关键在于支护结构和围岩体强度的耦合作用和控制底鼓.提出了以加强初次支护强度和采用底角锚杆为技术核心的支护方案.现场实践表明,该方案对高应力软岩巷道围岩变形的控制效果较好.In order to study the control.methods for roadway in highly stressed soft rock, we analyzed the deformation features of roadway in highly stressed soft rock based on physical parameters obtained in laboratory test and the measured results of deformation of the surrounding rock in Lvjiatuo coal mine. The FLAC3D numerical simulation was used in such analysis. The results show that the key to control the roadway is to ensure the stiffness coupling between adjoining rock and supporting structure and to prevent floor heave from taking place. Supporting scheme centered upon increasing strength of primary support and arrangement corner bolt was put forward. The industrial test results show that the scheme in this article can control the deformation of the surrounding rock of roadway in highly stressed soft rock.

关 键 词：深部 高应力软岩 耦合支护 参数设计 

分 类 号：TD353[矿业工程—矿井建设]