【摘要】：為了探尋深埋土巖界面下壓架突水事故的機理,在分析高水壓裂隙巖體賦存特征的基礎上,基于導水裂隙帶高度實測值及鉆孔簡易水文觀測資料,采用理論及主控因素影響分析研究了深埋砂土砂巖界面下導水裂隙帶的發(fā)育規(guī)律,研究結(jié)果表明:近深埋土巖界面帶煤層開采,裂采比與防水煤巖柱高度符合Boxlucas1指數(shù)函數(shù)模型;當煤層頂板巖層大部分位于風化帶深度范圍時,風化帶巖性的存在對導水裂隙帶的高度發(fā)育起到了一定的抑制作用;風化帶厚度對導水裂隙帶的高度起到一定的抑制作用;而砂土砂巖界面下,由于下滲帶的存在,水對巖體強度的影響,使得處于下滲帶內(nèi)巖層實際對導水裂隙帶高度抑制作用相應的增大。
[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.
【作者單位】： 桂林理工大學;桂林理工大學地質(zhì)資源與地質(zhì)工程博士后流動站;中國礦業(yè)大學;
【基金】：國家自然科學基金項目(41172290) 桂林理工大學博士(后)啟動基金項目資助
【分類號】：TD74

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