摘要
根据谢一矿-960 m水平C15顶板运输大巷工程实际,通过对巷道深部围岩变形监测及分析底鼓影响因素,获得了巷道顶板、两帮及底板围岩动态变形特征及底鼓主要原因,认为在两帮与顶板支护后,巷道应力和变形集中到支护体系薄弱的底板释放,发生强烈的挤压流动型底鼓。在此基础上,提出并实施了注浆加固顶帮围岩、底板锚索和底板胶囊管帷幕注浆的深井巷道底鼓综合控制技术,同时配用自行加工制造的风动底板锚索钻机,有效解决了底板锚索孔施工难题。工程实践表明,该技术能有效控制深井巷道底鼓,保持巷道长久稳定。
According to the engineering conditions of the C15 haulage roadway at-960 m elevation in Xieyi coal mine, dynamic deformation characteristics of surrounding rock between the roof, two sides and the floor and the main reasons of floor heave have been obtained through monitoring the roadway deformation and analyzing floor heave factors. The results show that the main reasons of floor heave are the squeezing and flowing of fractured rock mass, which cause the stress and deformation of roadway release from the non-supporting floor. The comprehensive measures are put forward and put into practice accordingly, including the roof and two sides grouting, floor cable supporting and curtain grouting of hydraulic hose. In addition, a self-manufacturing floor drilling machine is adopted to overcome the difficulty in drilling the cable holes. Facts have proved that the technology can effectively control the floor heave and keep the roadway stable for a long time in deep coal mine.
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2015年第6期968-972,共5页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(51204006)
安徽省杰出青年基金项目(1108085J02)
关键词
深井巷道
底鼓
底板锚索
底板胶囊管注浆
deep mine roadway
floor heave
floor cable
hydraulic hose grouting
