密集建筑物下高承压水上采留比研究
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摘要
本文针对1160采区地面村庄稠密、受水威胁严重的问题,综合考虑各种因素,对建筑物下及承压水上采留比理论公式进行推导计算。采取概率积分法进行地表下沉预计,岩体水力学法分析底板破坏,并提出采宽50m、留宽50m的开采方案,运用FLAC3D数值模拟、底板突水机理研究等手段对该方案进行研究,得出该条件下的可行方案。
Aiming at the problem of dense ground villages and serious water threat in 1160 mining area, this paper deduces and calculates the theoretical formula of mining retention ratio under buildings and confined water, taking into account various factors. The probability integral method is used to predict the surface subsidence, the rock mass hydraulics method is used to analyze the floor failure, and a mining scheme with a mining width of 50 m and a retaining width of 50 m is proposed. The scheme is studied by means of FLAC3 D numerical simulation and the mechanism of floor water inrush, and the feasible scheme under this condition is obtained.
Aiming at the problem of dense ground villages and serious water threat in 1160 mining area, this paper deduces and calculates the theoretical formula of mining retention ratio under buildings and confined water, taking into account various factors. The probability integral method is used to predict the surface subsidence, the rock mass hydraulics method is used to analyze the floor failure, and a mining scheme with a mining width of 50 m and a retaining width of 50 m is proposed. The scheme is studied by means of FLAC3 D numerical simulation and the mechanism of floor water inrush, and the feasible scheme under this condition is obtained.
引文
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[5]F.G.Bell&C.A.Jermy.An investigation of primary permeability in strata from a mine in the Eastern Transvaal Coalfield[C].South Africa[J]Quarterly Journal of Engineering Geology and Hydrogeology,2002,35(04):391-402.
[2]温兴林,段西亮,于飞,等.复杂条件下薄煤层综采方案研究[J].山东科技大学学报(自然科学版),2011,30(04):29-33.
[3]郑纲.高承压水上采煤工作面斜长的确定方法[J].煤田地质与勘探,2003,31(04):36-37.
[4]景年峰,吕龙海,董加江.建筑物下、承压水上采煤技术的研究与实践[J].煤炭科技,2009(04):53-54.
[5]F.G.Bell&C.A.Jermy.An investigation of primary permeability in strata from a mine in the Eastern Transvaal Coalfield[C].South Africa[J]Quarterly Journal of Engineering Geology and Hydrogeology,2002,35(04):391-402.