兴安矿深部软岩巷道交叉点支护技术  

Countermeasures Aiming at the Support for Crossing Roadway of Deeply Buried Soft Rocks in Xing'an Coal Mine

作　　者：何满潮[1] 李国峰[1] 刘哲[1] 蔡健[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,北京100083

出　　处：《采矿与安全工程学报》2007年第2期127-131,共5页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金重大项目(50490270);教育部科学技术研究重大项目(10405)

摘　　要：随着矿井开采深度的增加,地质环境趋于复杂,受围岩岩性和“三高一扰动”(即高地应力、高地温、高岩溶水压和强烈的开采扰动)的影响,使得深部软岩巷道支护十分困难,巷道立体交叉部位的难度尤为突出.为了更好地解决交叉点难支护的问题,结合鹤岗矿务局兴安矿四水平单机车线与水仓十字交叉点的工程实例,提出了柔层桁架支护的原理,基于FLAC3D软件,模拟了柔层桁架技术在深部中生代软岩巷道交叉点支护中的可适用性.工程应用效果表明,柔层桁架支护技术能有效地控制深部软岩巷道交叉点的变形问题,是一种有效控制深部软岩巷道交叉点变形的支护形式.With the increase of mining depth, the geological conditions become more and more complicated. Under the influence of the so call ＂Three high and one disturbance＂, namely the high ground stress, high ground temperature, high karst hydraulic pressure, and intense mining disturbance, the support of deep soft rock roadway, especially at the cross point of two roadways, becomes very difficult. In order to solve this problem, based on the engineering case at the solid crossed intersection of single engine roadway and water sump on the 4th horizon of Xing＇an Coal Mine, Hegang Coal Mine Group Corporation, the principle of flexible layer truss support was introduced. The FLAC3D software is used to numerically simulated the practicability of flexible layer truss technique used at the deep Mesozoic soft rock roadway intersection. The engineering application indicates that the flexible layer truss technique, as an effective method, can be used to control the distortion of surrounding rock at the intersection.

关 键 词：深部 软岩巷道 交叉点 数值模拟 柔层桁架 

分 类 号：TD353[矿业工程—矿井建设]