基于小变形控制的软岩巷道底臌超挖锚注回填技术研究  

Excavation Backfill Technology Based on the Small Deformation Control of Soft Rock Roadway Floor Heave

作　　者：刘光程[1] 

机构地区：[1]淮南职业技术学院,安徽淮南232001

出　　处：《湖北第二师范学院学报》2015年第8期66-69,共4页Journal of Hubei University of Education

基　　金：2012年安徽省优秀青年人才基金(2012SQRL257);2013淮南职业技术学院精品课程<地基与基础工程>;2014淮南职业技术学院自然科学研究项目(HKJ14-2)

摘　　要：深部软岩的复杂地质力学环境,使岩体表现出非线性大变形力学特性,导致单纯的主动支护无法保证巷道围岩稳定,影响了深部矿井煤炭资源的安全开采。针对顾北煤矿巷道的严重底臌,分析了底臌发生的机理,得出了软岩的物理、水理力学性质、地质环境及巷道底板欠支护强度等是巷道发生底臌的主要原因。提出了巷道底板超挖锚注回填技术,利用锚网索注整体加固,通过围岩应力的合理转化,达到了控制底臌小变形量的目标。Complex geomechanical environment of deep soft rock shows significant nonlinear large deformation mechanical properties,resulting in a simple active support unable to guarantee the stability of surrounding rock,and seriously affecting the safe mining of coal resources in deep mines. This paper,based on the severe floor heave of Gubei mine,first analyzes the mechanism of its occurrence and finds out that physical soft rock,water management and mechanical properties,geological environment and roadway floor lack strengthened support which is the main reason for the roadway floor heave. Then it proposes the technology of overbreak roadway floor bolting and backfill grouting. The anchor net of overall reinforcement is timely injected to achieve a reasonable transformation of high stress so as to control roadway floor heave within small serious deformation.

关 键 词：深井软岩 小变形 超挖锚注回填 底臌 

分 类 号：TU74[建筑科学—建筑技术科学]