地下非充分采动对地表民房的影响范围研究

Study on influence scope of underground subcritical extraction to civil buildings on surface ground

为了研究非充分采动条件下的采动影响范围,在分析李宅煤矿非充分采动对马寨镇申咀村部分民房影响的基础上,提出"非充分采动影响范围调整系数"概念,通过求取概率积分法预计参数、充分采动系数综合计算非充分采动影响范围,并利用非充分采动影响范围调整系数来进行采动影响范围调整。研究结果表明:非充分采动条件下,利用概率积分法预计软件预计的开采影响范围与现场实际调查情况基本相符;非充分采动条件下,利用边界角计算的采动影响范围比实际情况大;根据概率积分法预计并结合充分采动系数能够很好地计算出非充分采动条件下的采动影响范围。

In order to study the mining influence scope under the subcritical extraction condition, based on the subcritical extraction in Liz- hai Mine affected to the partial civil buildings in Shenzui Village of Mazhai Town, a conception of ＂ adjustment coefficient of the subcritical extraction influence scope＂ was provided.With the probability integral method obtained applied to predict the parameters and the full sub- sidence coefficient applied to comprehensively calculate the influence scope of the suberitical extraction, the ＂adjustment coefficient of the subcritical extraction influence scope＂ applied to adjust the influence scope of the mining.The study results showed that under the subcriti- cal extraction condition, the mining influence scope predicted with the software of the probability integral method could be basically fitted to the site actual investigation condition.Under the subcritical extraction condition, the mining influence scope calculated with the boundary angle would be larger than the actual condition.According to the prediction with the probability integral method and in combination with the full subsidence coefficient, the mining influence scope under the subcritica] extraction condition could be well calculated.