采矿与安全工程学报Issue(3)：355-362,8.
极破碎软岩巷道失稳机理与动态迭加耦合支护技术研究
Instability mechanisms and dynamic superposition coupling support in extremely fractured and soft rock roadway
摘要
Abstract
Based on long-term mine pressure monitoring, mechanical properties test results, mineral composition analysis and broken zone detection results of surrounding rock in Zhaozhuang mine, the deformation and failure characteristics of surrounding rock were analyzed, and the instability mecha-nisms were also revealed. The dynamic superposition coupling support technology composed of reserv-ing deformation, bolt-net-anchor-spout coupling support and bolt-grouting support was proposed for the extremely fractured and soft roadway. The effects of dynamic superposition coupling support technolo-gy were verified by similar model test and engineering practice. The study shows that the deformation of the surrounding rock can be effectively controlled by means of releasing deformation energy and high stress in surrounding rock through reserving deformation, high prestressed cables in the roof, high pre-stressed bolts and low prestressed cables in the sides to achieve the goal of pressure relief and roof control, the combination of low pressure filling and high pressure permeation grouting to form the posi-tive and effective bolt-grouting support and multilayer composite beams structure, and bolt-grouting support to control floor heave.关键词
破碎围岩/软岩巷道/变形失稳/耦合支护/控制技术Key words
fractured surrounding rock/soft rock roadway/deformation instability/coupling support/control technology分类
矿业与冶金引用本文复制引用
宗义江,韩立军,郜建明..极破碎软岩巷道失稳机理与动态迭加耦合支护技术研究[J].采矿与安全工程学报,2013,(3):355-362,8.基金项目
国家自然科学基金项目(50774082，50804046) （50774082，50804046）
