采矿与安全工程学报2017，Vol.34Issue(4)：637-643,7.DOI:10.13545/j.cnki.jmse.2017.04.005
俯伪斜开采采场顶板破断模型与工程实测研究
Model of the roof fracture in pitching diagonal mining panel and its field measurement
摘要
Abstract
According to the arrangement feature of parallelogram in the pitching diagonal mining panel, the mechanical model of the main roof in this panel was built based on the small deflection theory of the thin flexible plate; the approximate formulas of bending deformation of main roof during the initial stage and the normal stage of mining in pitching diagonal mining panel were derived based with Kanto-rovich method; the mechanical mechanism of the shape effect of the deformation and fracture in the main roof were revealed. Combining the actual engineering parameters in the pitching diagonal working face of S2611 in Fengchun Coal Mine, the distance of initial weighting and periodic weighting of the main roof were calculated to be 12 m and 8 m respectively, and the maximum deflection of main roof at the upper-middle working face was worked out to be about 0.08 m. Last, such special phenomena of strata behavior as low weighting intensity, similar rate of gangue filling along the entire gob and subsec-tion weighting are discussed.关键词
急倾斜/薄煤层/俯伪斜开采/平行四边形板Key words
steep seam/thin seam/pitching diagonal mining/parallelogram plate分类
矿业与冶金引用本文复制引用
潘瑞凯,曹树刚,沈大富,梁俊林,廖建国..俯伪斜开采采场顶板破断模型与工程实测研究[J].采矿与安全工程学报,2017,34(4):637-643,7.基金项目
国家自然科学基金项目(51474039,U1361205) （51474039,U1361205）
贵州省教育厅创新群体重大项目(黔教合KY字[2016]042) （黔教合KY字[2016]042）
