深埋土岩接触带下导水裂隙带发育规律  

DEVELOPMENT RULES OF WATER FLOWING & FRACTURE ZONE AT DEEP BURIED SOIL-ROCK INTERFACE DURING MINING

作　　者：白汉营[1,2] 李文平[3] 陈学军[1] 黄翔[1] 

机构地区：[1]桂林理工大学,桂林541004 [2]桂林理工大学地质资源与地质工程博士后流动站,桂林541004 [3]中国矿业大学,徐州221116

出　　处：《工程地质学报》2017年第5期1322-1327,共6页Journal of Engineering Geology

基　　金：国家自然科学基金项目(41172290);桂林理工大学博士(后)启动基金项目资助

摘　　要：为了探寻深埋土岩界面下压架突水事故的机理,在分析高水压裂隙岩体赋存特征的基础上,基于导水裂隙带高度实测值及钻孔简易水文观测资料,采用理论及主控因素影响分析研究了深埋砂土砂岩界面下导水裂隙带的发育规律,研究结果表明:近深埋土岩界面带煤层开采,裂采比与防水煤岩柱高度符合Boxlucas1指数函数模型;当煤层顶板岩层大部分位于风化带深度范围时,风化带岩性的存在对导水裂隙带的高度发育起到了一定的抑制作用;风化带厚度对导水裂隙带的高度起到一定的抑制作用;而砂土砂岩界面下,由于下渗带的存在,水对岩体强度的影响,使得处于下渗带内岩层实际对导水裂隙带高度抑制作用相应的增大。This paper aims to find the reason for preventing the crushing and water inrush accidents under deep buried soil-rock interface at coal mine in Eastern China. It analyses the geological environment of fractured rock mass with high water pressure under deep buried sand-sandstone interface. It uses the measured data including the height of water flowing fractured zone and simple hydrological observations data of drilling hole. It examines the development rules of the height of water flowing fractured zone during mining under deep buried soil-rock interface using principal component analysis. The results show that： ratio of the height of water flowing fractured zone and mining thickness and waterproof coal pillar fits Boxlucas1 exponential function model. The thickness of weathered zone inhibits the height of water flowing fractured zone to some extent. But for the sand-sandstone interface,as the presence of adown penetration zone,the inhibitory effect of weathered rock on the height of water flowing fractured zone increases.

关 键 词：深埋土岩界面 导水裂隙带 压架突水 下渗带 

分 类 号：TD741[矿业工程—矿井通风与安全]