象山矿井主采3^#煤层涌水规律及充水因素分析  

Analysis of the gushing water law and water filling factors for No.3 coal seam of Xiangshan mine

作　　者：王生全[1] 吴佩[1] 樊敏[1] 孙建峰[1] 武忠山 

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054

出　　处：《西安科技大学学报》2016年第6期831-836,共6页Journal of Xi’an University of Science and Technology

基　　金：陕西省科学研究发展计划项目(2014JM5215);陕西省教育厅科研计划项目(12JK0473)

摘　　要：为查清矿井的涌水机理,为矿井防治水提供依据,依据大量生产资料,采用相关分析及理论分析相结合的方法,总结了象山矿井及主采3#煤层采面涌水规律,分析了充水因素,开展了煤层顶板含水层充水危险性预测。结果表明,矿井涌水量随着开采条件的变化总体呈现增高的变化趋势,采面涌水量具有背斜区低,向斜区高,回采期间具有先小后大,再由大变小的规律;充水通道主要为采动产生的顶板导水裂隙,充水水源主要来自煤层顶板山西组底部(K4)砂岩含水层与下石盒子组底部砂岩含水层水,涌水量大小与采面所在构造部位、顶板上覆含水层的岩性厚度及煤产量大小有关。在考虑采煤工艺和开采强度相同、同一采区构造类型相同、充水含水层富水性平面差异不够明显及大气降水及地表径流补给不变的情况下,依据顶板导水裂隙带范围内上覆砂岩含水层的岩性与厚度大小对3#煤层顶板含水层充水危险性进行了预测。为避免回采过程顶板突然涌水,应在顶板含水层充水危险性严重区采取事先疏放水措施。To identify the mechanism of mine water gushing and provide evidence for prevention and treatment of mine water,based on a large number of production data,we summarize the water gushing law for mine and No. 3 coal seam mining face in Xiangshan coal mine,analyze the water filling factors,and carry out the prediction study on the seam roof aquifer water filling risk. It shows that the water inflow is of increased trend with change in mining conditions. The water inflow at the mining face is low at the anticline zone,high at the syncline area,and increase in earlier but cut back in the late during production. The main water-filled channels are mining-caused roof water flowing fractures. The water-filling source is from the main group at the bottom of Shanxi Coal Seam Roof（ K4） sandstone aquifer and Xiashihezi bottom sandstone aquifer water,inflow size depends on the structure of the mining face,the lithology and thickness of the roof overlying aquifer and coal production. In consideration of mining technology and exploitation intensity,the same type of structure in the same mining area,plane difference for water-filled aquifer-rich aqueous is not obvious and atmospheric precipitation and surface runoff supplyremains unchanged,based on the lithology and thickness of the overlying sandstone aquifer within the scope of roof water flowing fractured zone,the risk for No. 3 coal seam roof aquifer water filling has been predicated. In order to avoid gushing water from mine roof in the process of mining suddenly,advancing dewatering measures should be taken in roof aquifer water-filled grave danger zone.

关 键 词：涌水规律 充水因素 3^#煤层 象山矿井 

分 类 号：TD12[矿业工程—矿山地质测量]