本文選題：承壓水 + 膏體充填��； 參考：《中國礦業(yè)大學(xué)》2017年碩士論文

【摘要】：我國煤炭行業(yè)中的群死群傷特大事故主要由瓦斯突出和突水災(zāi)害造成,各類突水事故給煤炭企業(yè)帶來的人員傷亡和經(jīng)濟損失極為慘重,其中承壓水上開采一直是我國煤炭開采的重點也是難點。近年來,隨著特殊開采技術(shù)的發(fā)展,膏體充填開采作為一種安全高效的綠色采煤方法得到大力推廣應(yīng)用,該技術(shù)可以實現(xiàn)“三下一上”壓煤的安全開采。本文以岱莊煤礦承壓水上煤層的開采為研究對象,針對含水層水壓較高的特點,提出膏體充填開采的技術(shù)方案,通過理論分析、數(shù)值模擬及現(xiàn)場實測等方法分析了充填開采的煤層底板破壞規(guī)律,確定了充填材料配比在內(nèi)的膏體充填開采工藝參數(shù),取得以下主要成果:(1)理論計算得出垮落法開采后11605工作面底板最大破壞深度為11.7 m,十三灰和奧灰含水層對底板的突水系數(shù)全部大于0.1 MPa/m,突水危險性高。(2)膏體充填開采建立底板隔水層梁式模型,依據(jù)數(shù)值模擬中充填開采底板破壞深度4~9 m,可以確定承壓水上安全開采的充填方案:充填體強度為2 MPa,充填步距為3.6 m。(3)利用PLS模型設(shè)計充填材料配比,滿足充填體強度要求并能降低充填成本,鉆孔注水試驗驗證了膏體充填開采可以減小底板破壞深度,實現(xiàn)承壓水上煤層的安全開采。本文的研究成果,不僅對岱莊煤礦下組煤承壓水上的安全開采具有現(xiàn)實意義,同時也對其它類似礦井開采承壓水上煤層有一定借鑒作用。
[Abstract]:The major accidents in coal industry in China are mainly caused by gas outburst and water inrush. All kinds of water inrush accidents bring heavy casualties and economic losses to coal enterprises. Pressure-bearing water mining has always been the focus of coal mining in China is also a difficult point. In recent years, with the development of special mining technology, paste filling mining, as a safe and efficient green coal mining method, has been popularized and applied. Aiming at the characteristics of high water pressure of aquifer, the technical scheme of paste filling mining is put forward in this paper, which is based on theoretical analysis, taking the mining of coal seams under pressure in Daizhuang coal mine as the research object, and aiming at the characteristics of high water pressure of aquifer. The failure law of coal seam floor in filling mining is analyzed by numerical simulation and field measurement, and the technological parameters of paste filling mining, including the proportion of filling material, are determined. The main results are as follows: 1) theoretical calculation shows that the maximum failure depth of floor in 11605 working face after caving mining is 11.7 m, the water inrush coefficient of 13 ash and Ordovician aquifer is all greater than 0.1 MPA / m, and the risk of water inrush is high. In mining, the beam model of the bottom plate water isolation layer is established, According to the failure depth of backfill mining floor in numerical simulation, the filling scheme of safe mining on confined water can be determined: the filling body strength is 2 MPa, the filling step distance is 3.6 m 路m ~ (3) the filling material ratio is designed by PLS model. To meet the requirements of backfill strength and reduce the filling cost, the borehole water injection test proved that paste filling mining can reduce the depth of floor damage and realize the safe mining of coal seams on pressurized water. The research results of this paper not only have practical significance for safe mining of coal bearing water in Dazhuang coal mine, but also can be used for reference in other similar mines.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD823.7

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