四川沙湾区磨儿田塌陷群特征及防治措施研究

Research on character and prevention measures of moertian ground collapse in Shawan,Sichuan

磨儿田塌陷群位于四川沙湾区轸溪乡双山村,塌陷群从2004年开始出现第一个塌陷坑,到2012年在3 km2范围内共发育近20个大小不等的塌陷坑,最大塌陷坑直径超过30 m,深度达到65 m.严重威胁着塌陷区范围内10户共30人的生命财产安全.在现场调查分析的基础上,针对塌陷群的特征,通过对塌陷群成因机制、稳定性以及未来变形趋势分析,提出塌陷群的防治措施:遵循"以防为主,防治结合"的总体原则,以监测为主要手段,科学论证矿山的开采,辅以必要的搬迁和工程处理措施,可有效减少塌陷对村民的威胁.

The Moertian ground collapse locates in Shuangshan village, Shawan, Sichuan. The first collapse crater form in 2004. To be 2012, there are 20 collapse craters in 3Km2. The diameter of the maximal collapse crater more than 30m and depth is 65m. The ground collapse threatens life and property safety of 30 villagers badly. Prevention measures were brought forward that keep to principle of prevention and cure combination aiming at the characters of the ground collapse base on the formation mechanism and stability and deformation trend. These measures that take the monitor as the primary measure and the engineering prevention and reasonable mine exploitation and relocation as the accessorial measure effectively reduce threaten to the villagers.