浅谈湖南711矿山体滑坡群的成因及治理措施

711矿位于湖南省郴州市东北11km的许家洞镇。滑坡主要发生在711矿主矿带斗岭组地层，由3个滑坡体组成滑坡群。斗岭组地层上覆第四纪残坡积层，斗岭组地层为隔水层。通过对发生在711矿山体上的滑坡群的勘探及降雨和堆石的调查情况，结合对边坡角的演化、渗入坡体水的软化作用等因素的分析，阐明了该滑坡群发生的主要原因是废石堆置超荷、降雨通过第四纪土层的垂直入渗后在斗岭组和残坡积层之间形成软弱带。同时采矿中经常性的爆破震动也是诱发滑坡的原因之一。最后对滑坡群提出了刷方减重、埋设抗滑桩等治理方案。

Analysis and treatment of landslide group in 711 Mine

In this paper, the forming mechanism of a group of landslide has been analyzed based on detailed survey on the debris for the runoff and infiltration on the slope boundary due to erosion by rainfall and the foot of the slope had been continuously eroded by the water-flow down from the up-reach during rainfall. The existence of the deep gully also provided well geological condition for continuing sliding. Measures should be taken on the slope to prevent large hazard from further happening, especially for the security of local residents. A primary plan has been presented in this paper. It should note that these measures are identical with the scheme for treatment of whole landslide group in 711 Mine.