中国地质灾害与防治学报2012，Vol.23Issue(4)：76-80,5.
辽宁三台子水库下特厚煤层综放开采覆岩破坏特征
Failure rules of overburden strata in fully-mechanized sublevel caving mining of specially thick coal seam of Daping mine
冯国财 1李强 2孟令辉3
作者信息
- 1. 辽宁经济职业技术学院科研处,辽宁沈阳110122
- 2. 沈阳煤炭科学研究所采矿室,辽宁沈阳110015
- 3. 铁煤集团公司大平煤矿,辽宁沈阳112600
- 折叠
摘要
Abstract
Overburden strata's failure was observed through measuring the loss of drilling rinses to protect the fullymechanized sublevel caving mining of specially thick coal seam. Based on the data of the 12 drillings of 7 working face, concluded that the overburden strata's water flowing fractured zone fully developed after the working face had passed 36 40d while the lag working face distance was 110 - 120m under the situation that the mining thickness was 7.54 - 15. 17m and the average moving speed was 3m/d. The height was 148.23 - 234.10m which was 15.31 - 19.97 times of the mining thickness. Overburden strata's separation and failure developed to become a band above the water flowing fractured zone. The height was 181.58 - 390.75m which was 24.22 -36.00 times of the mining thickness.关键词
特厚煤层/综放开采/覆岩破坏/冲洗液耗失量/防水煤岩柱Key words
specially thick coal seam/fully-mechanized sublevel caving mining/overburden strata's failure/loss of drilling rinses/waterproof coal rock pillar分类
矿业与冶金引用本文复制引用
冯国财,李强,孟令辉..辽宁三台子水库下特厚煤层综放开采覆岩破坏特征[J].中国地质灾害与防治学报,2012,23(4):76-80,5.
