煤矿安全2019，Vol.50Issue(7)：238-242,248,6.DOI:10.13347/j.cnki.mkaq.2019.07.057
软弱巷道顶板脆弱区识别及其应用
Identification of Roof Fragile Zone in Soft Roadway and Application
摘要
Abstract
For the neglected problem of roof fragile zone due to the study of roadway roof structure in the macro perspective, the limited span discriminant formula of simply supported beam with unit width under the condition of the stability of beam was established. According to the engineering background, the thickness of weak sandy mudstone, the span of roadway, weak interlayer and fault are the important factors affecting the stability of roadway. By using stratum detector to observe the distribution of roof cracks and separation of strata and combining with borehole column diagram, the hidden dangers of roadway are classified and delineated by taking the thickness of sandy mudstone as the main index. The results show that 311102 auxiliary transportation roadway from the cutting hole to 3# connecting lane belongs to the class IV roof hidden danger area. The supporting parameters of 311103 auxiliary transportation roadway were designed specifically to realize the effective control of the fragile area of the roof.关键词
软弱巷道/顶板脆弱区/冒顶隐患/识别/砂质泥岩Key words
soft roadway/roof fragile area/roof caving hazard/identification/sandy mudstone分类
矿业与冶金引用本文复制引用
戴华宾,顾士坦,刘政,魏宝贞,宋海洲,黄义通..软弱巷道顶板脆弱区识别及其应用[J].煤矿安全,2019,50(7):238-242,248,6.基金项目
山东省自然科学基金面上资助项目(ZR2018MEE009) （ZR2018MEE009）
国家自然科学基金资助项目(51374140) （51374140）
