深埋土岩接触带下导水裂隙带发育规律
发布时间：2018-08-11 18:20
【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。
[Abstract]:In order to find out the mechanism of water inrush accident of pressure frame at the interface of deep buried soil and rock, based on the analysis of the occurrence characteristics of high pressure fractured rock mass, based on the height of the water-conducting fissure zone and the simple hydrological observation data of borehole. The development law of water-conducting fracture zone under the interface of deeply buried sand and sandstone is studied by using the theory and the main control factors. The results show that: the coal seam mining near the deep buried soil-rock interface zone, the ratio of crack to mining and the height of waterproof coal pillar accord with Boxlucas1 exponential function model; When the roof strata of coal seam are mostly located in the depth range of weathering zone, the existence of weathering zone lithology plays a certain role in inhibiting the height development of water-conducting fissure zone, and the thickness of weathering zone can inhibit the height of water-conducting fissure zone to a certain extent. However, at the interface of sand and sandstone, the influence of water on the strength of rock mass due to the existence of infiltration zone makes the inhibition effect of rock layer on the height of water-conducting fissure zone increase correspondingly.
【作者单位】： 桂林理工大学;桂林理工大学地质资源与地质工程博士后流动站;中国矿业大学;
【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
【分类号】：TD74
[Abstract]:In order to find out the mechanism of water inrush accident of pressure frame at the interface of deep buried soil and rock, based on the analysis of the occurrence characteristics of high pressure fractured rock mass, based on the height of the water-conducting fissure zone and the simple hydrological observation data of borehole. The development law of water-conducting fracture zone under the interface of deeply buried sand and sandstone is studied by using the theory and the main control factors. The results show that: the coal seam mining near the deep buried soil-rock interface zone, the ratio of crack to mining and the height of waterproof coal pillar accord with Boxlucas1 exponential function model; When the roof strata of coal seam are mostly located in the depth range of weathering zone, the existence of weathering zone lithology plays a certain role in inhibiting the height development of water-conducting fissure zone, and the thickness of weathering zone can inhibit the height of water-conducting fissure zone to a certain extent. However, at the interface of sand and sandstone, the influence of water on the strength of rock mass due to the existence of infiltration zone makes the inhibition effect of rock layer on the height of water-conducting fissure zone increase correspondingly.
【作者单位】： 桂林理工大学;桂林理工大学地质资源与地质工程博士后流动站;中国矿业大学;
【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
【分类号】：TD74
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