煤田地质与勘探2016，Vol.44Issue(6)：38-44,7.DOI:10.3969/j.issn.1001-1986.2016.06.007
永陇矿区LYL井田2号煤层顶板沉积环境及其稳定性评价
Sedimentary environment and stability evaluation of seam roof of No.2 seam in LYL Coal mine of Yonglong coal field
摘要
Abstract
In order to make reasonable evaluation on the stability of coal seam roof, thus for mine design, equipment selection, the roof maintenance management to provide scientific basis and to ensure the safety of mine high-efficient exploitation, research from the coal seam roof depositional environment through the roof strata classification and correlation, core fine description, samples of rock mechanics analysis of the sampling and testing system combining with the geophysical well logging technology (including hy-drological logging), pumping test technology, mine production data analysis technology, and so on. The coal seam roof depositional environment and the relationship between engineering geological and hydrogeological are studied. The main research area extract-ing seam roof belongs to the meandering river sedimentary environments, the main development sedimentary microfacies in the flood plain, the growth of sporadic crevasse splay sedimentary microfacies, point bar sedimentary microfacies, flood plain sedimen-tary formation of roof rock stability belongs to the poor. The point bar, crevasse splay sedimentary formation of roof rock stability belongs to the medium, the aquifer of roof mainly formed in the crevasse splay, point bar sedimentary environment, mainly for the lenticular, small range to thick bedded sandstone, J2z aquifer formed in multiphase vertical superimposed channel sand body formed by the thick layer of sand body. Sedimentary environment not only affects the engineering geological characteristics but also impacts coal seam roof aquifer distribution, water content, the height of water flowing fracture belt and so on hydrogeological characteristics.关键词
煤层顶板/沉积环境/工程地质特征/水文地质特征/顶板稳定性Key words
seam roof/sedimentary environment/the characteristics of engineering geological/hydrogeological charac-teristics/roof stability分类
天文与地球科学引用本文复制引用
王海军..永陇矿区LYL井田2号煤层顶板沉积环境及其稳定性评价[J].煤田地质与勘探,2016,44(6):38-44,7.基金项目
中煤科工集团西安研究院有限公司科技创新基金项目(2013XAYQN002)@@@@Science and Technology Innovation Fund of Xi’an Research Institute of CCTEG(2013XAYQN002) （2013XAYQN002）
