巨厚砂岩含水层下安全开采可行性研究  

Feasibility Study on Safe Mining of Thick Sandstone Aquifer

作　　者：李小四 岳阳 Li Xiaosi;Yue Yang(Ningxia Coal Industry Co.,Ltd.,National Energy Group,Ningxia,751000;School of Mining Engineering,China University of Mining and Technology,Jiangsu,221116;Ningxia Coal Basic Construction Co.,Ltd.,National Energy Group,Ningxia,751000)

机构地区：[1]国家能源集团宁夏煤业有限责任公司,宁夏751000 [2]中国矿业大学矿业工程学院,江苏221116 [3]国家能源集团宁夏煤炭基本建设有限公司,宁夏751000

出　　处：《当代化工研究》2024年第20期128-130,共3页Modern Chemical Research

摘　　要：为研究巨厚砂岩含水层下工作面开采可行性,以陕西某矿5煤为研究对象,分析工作面水害程度与安全开采。研究结果表明:5煤工作面开采垮落带为22 m,垮采比为6.53;裂隙带最大发育高度为43.08 m,裂采比12.78,开采裂隙发育顶部处在直罗组直接含水层中下部。5煤煤系直接含水层,涌水量小且补给来源单一,径流滞缓;间接含水层因距离较远而难以形成导水通道。因此,工作面开采前,做好探放工作,可有效防止涌水事故。To study the feasibility of mining under a thick sandstone aquifer,a coal mine in Shaanxi Province was selected as the research object to analyze the degree of water damage and safe mining in the working face.The research results show that the collapse zone of the 5-coal working face is 22 meters,and the collapse ratio is 6.53;The maximum development height of the fissure zone is 43.08 m,with a fissure mining ra-tio of 12.78.The top of the fissure development is generally located in the lower part of the direct aquifer of the Zhiluo Formation.The direct aquifer of coal bearing strata has a small water inflow and a single source of recharge,resulting in slow runoff;Indirect aquifers are difficult to form water channels due to their long distance.Therefore,before mining on the working face,conducting exploration and excavation work can effectively pre-vent water inrush accidents.

关 键 词：巨厚砂岩含水层 导水裂隙带 顶板覆岩 水害威胁性 

分 类 号：TD823[矿业工程—煤矿开采]