煤矿安全2019，Vol.50Issue(1)：38-42,47,6.DOI:10.13347/j.cnki.mkaq.2019.01.010
软岩矿区顶板弱含水层高强度携沙突水机理研究
Study on Mechanism of High－strength Water－inrush with Sand Caused by Weak Aquifer in Soft Rock Mining Area
吕玉广 1肖庆华 1韩港1
作者信息
- 1. 内蒙古上海庙矿业有限责任公司,内蒙古 鄂尔多斯 016299
- 折叠
摘要
Abstract
In recent years, there are many cases of high strength water inrush with sand from coal seam roof caused by weak aquifer in Jurassic coalfield in northwest China. In order to identify the mechanism of high-strength water-inrush caused by weak aquifers and sources of sand, to facilitate the development of prevention measures, this paper starts with the analysis of soft rock characteristics, and the viewpoint about the "new four-quadrant" model of the mechanical structure of overburden rock after mining and practical basis are proposed. Four conditions for formation of separated strata water damage are pointed out. It is made clear that the inrush strength of the weak aquifer is strengthened by the catchment action of separated strata, and the self-plugging effect of sediment determines the intermittent water inrush mode. It proves the correctness of the above viewpoints and provides the theoretical basis for the prevention and treatment of such accidents.关键词
软岩矿区/携沙突水/覆岩移动/离层水害/突水机理Key words
soft rock mining area/water-inrush with sand/overlying rock movement/separated strata water disaster/water-inrush mechanism分类
矿业与冶金引用本文复制引用
吕玉广,肖庆华,韩港..软岩矿区顶板弱含水层高强度携沙突水机理研究[J].煤矿安全,2019,50(1):38-42,47,6.
