深埋软弱破碎煤巷围岩变形破坏机理及支护对策  

Deformation and Failure Mechanism of Surrounding Rock in Deep Buried Soft Coal Roadway and Supporting Measures

作　　者：任建喜[1] 黄剑斌 杨渴 宋勇军[1] 

机构地区：[1]西安科技大学建筑与土木工程学院,西安710054

出　　处：《煤炭技术》2017年第10期1-3,共3页Coal Technology

基　　金：国家自然科学基金项目(11402195)

摘　　要：针对深埋全煤巷道开挖后围岩松散破碎、变形大且难以稳定、流变效应明显的特点,以建北煤矿104工作面回风巷为工程背景,分析了该巷道围岩变形破坏特征和机理,提出了以强帮固顶、一次柔性支护、二次刚性支护为原则的支护方案。运用FLAC3D数值计算软件预测分析了支护前后围岩的变形和塑性区发育情况,确定了方案的可行性。After the excavation of the deep buried coal roadway,the surrounding rock has the characteristics of loose crushing,large deformation,difficult to stabilize and obvious rheological effect. According to the mining geological conditions of 104 working face ventilation roadway in a mining area of Jianbei,failure characteristics and mechanism of deformation of surrounding rock were analyzed. With the first flexible support, second rigid support for the principle of the program,puts forward a scheme to improve the strength of surrounding rock of roadway＇s sides,and strengthen the roof. The numerical simulation software FLAC^3D is used to predict the deformation of surrounding rock and the development of plastic zone before and after the support.

关 键 词：全煤巷道 变形破坏机理 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]