浅析矿山地下开采区移动盆地演化机制

Analysis on the Evolution Mechanism of the Moving Basin in Underground Mining Area

随着矿山地下开采活动的进行,矿山采空区面积逐渐扩大,受外界条件的影响,采空区局部地区预留矿柱出现开裂变形等,导致采空区上部顶板发生弯曲并形成裂缝,在重力作用下裂缝的逐渐加大,形成地面塌陷,随着塌陷坑的演化,移动盆地逐渐形成。本文就矿山开采后移动盆地的演化特征进行简单分析,并总结牟定铜矿采空区移动盆地形成机制。

With the development of underground mining activities, the area of mine goaf is gradually expanding. Affected by external conditions, the reserved pillar in the local area of mine goaf will has cracks and deformation, which leads to the bend and cracks in the top of the roof of the mine goaf. Under the action of gravity, the cracks increase gradually, the ground collapse is formed. With the evolution of the collapse pit, the moving basin is gradually formed. The evolution characteristics of mining moving basin are analyzed, and the formation mechanism of the moving basin in the goaf of Mouding Copper Mine is summarized.