露天矿矿区民房开裂原因分析

从露天矿边坡的稳定性、爆破震动以及地表不均匀沉降等方面，分析了民房开裂的成因。分析表明，边坡整体稳定性状态良好，不可能出现整体性的滑坡现象；生产时所产生的爆破震动速度在允许范围之内，也不会对该区域的民宅造成危害；民房地基为第四系表土，地层的可压缩性有较大的差异，地基的不均匀沉降是民宅产生裂缝的主要原因。

CRACKING CAUSES ANALYSIS OF RURAL BUILDINGS IN OPEN-PIT MINE AREA

The causes to the cracking of the rural buildings are analyzed from the perspectives of open-pit mine slope stability,blasting vibration and the non-uniform settlement,which indicate that the slope's global stability is in a good state,so it is unlikely to occur landslide.The generated blasting vibration speed is within allowable range,which will not do harm to nearby rural buildings.The building's foundation is composed of Quaternary topsoil,and the compressibility of strata is explicitly different,which justify that it is the uneven settlement that mainly result in the cracking of the rural buildings.