煤矿安全2019，Vol.50Issue(10)：66-70,5.DOI:10.13347/j.cnki.mkaq.2019.10.015
滨湖矿巷道围岩裂隙演化规律实测研究
Experimental Study on Evolution Law of Surrounding Rock Fissures in Roadway of Binhu Coal Mine
王思栋 1朱宗磊 1杨斌1
作者信息
- 1. 枣庄矿业集团 滨湖煤矿,山东 枣庄 277500
- 折叠
摘要
Abstract
To explore the space-time evolution law of surrounding rock fissures in deep roadway during roadway excavation, the 16112 material roadway of Binhu Coal Mine was taken as the engineering background, and ZKXG30 borehole imager was used to carry out the drilling detection for roadway roof and sides coal and rock mass during the roadway excavation process. Through the quantitative analysis of the distribution characteristics of the coal-rock structure surface of the roof drilling, and the evaluation of the roof fracture at different locations, the spatio-temporal evolution law of surrounding rock fissures of 16# coal seam roadway is obtained. The results show that with the roadway excavation, the surrounding rock loose circle shows a development trend of early expansion and later contraction. After the excavation, the loose circle of the surrounding rock expands from 0 to 250 m, and the loose circle of 250 m expands to the maximum; the loose circle from 250 to 650 m gradually shrinks, and the loose circle of 650 m reaches stability.关键词
钻孔成像/结构面/裂隙演化/破碎评价/松动圈Key words
drilling imaging/structural surface/fracture evolution/broken evaluation/loose circle分类
矿业与冶金引用本文复制引用
王思栋,朱宗磊,杨斌..滨湖矿巷道围岩裂隙演化规律实测研究[J].煤矿安全,2019,50(10):66-70,5.
