黑龙江科技大学学报2017，Vol.27Issue(6)：575-580,6.DOI:10.3969/j.issn.2095-7262.2017.06.001
深部软岩巷道顶板冒落的机理与控制方法
Mechanism underlying roof caving in deep soft rock roadways and control method
摘要
Abstract
This paper is motivated by the necessity of eliminating the larger deformation of deep soft rock roadways in Xing' an mine. The research combined with the analysis of surrounding rock structure and roadway deformation pattern involves classifying the loaded-line roof in caving area into four types:interbeded layered sandstone, joint sandstone, massive sandstone and fragmented coal-rock; analyzing the caving mechanism and deformation process of the above-mentioned 4 structure models using the nu-merical analysis software UDEC2D;and developing a double chamber stability coupling support technology based mainly on bolt-mesh-anchor three-dimensional truss coupling support. The results show that the in-consistent layer cohesion produces the inhomogeneous deformation of interbeded layered sandstone; in-congruous bedding surface friction results in bedding surface slippage in joint sandstone;joints and frac-ture in rock blocks is responsible for roof sag in massive sandstone;and the pressure of the overlying stra-ta leads to the collapse of fragmented coal-rock roof. The proposed technique capable of effectively con-trolling roadway deformation in a relatively short period of time with a smaller deformation and a faster sta-bility time may provide a reference for controlling deep soft rock tunnel caving.关键词
深部软岩巷道/顶板结构模型/冒落机理/上下双硐室支护技术Key words
deep soft rock roadway/roof structural model/mechanism of caving/upper and lower double cavern stability control countermeasures分类
矿业与冶金引用本文复制引用
张俊文,郭志飚,陈炼,曹天培,王昊昊..深部软岩巷道顶板冒落的机理与控制方法[J].黑龙江科技大学学报,2017,27(6):575-580,6.基金项目
国家自然科学基金项目(51574114) （51574114）
国家重点研发计划专项资助项目(2016YFC0600901) （2016YFC0600901）
