长江三峡链子崖危岩体产生的机理及工程治理

Mechanism and project control on dangerous rock mass in Lianzi Cliff of Three Gorges,Yangtse River

由于煤炭开采引起的地质灾害在我国并不鲜见,长江三峡链子崖危岩体的产生就是其中的一例,但现有的技术手段完全可以控制地质灾害的产生。通过简述长江三峡链子崖危岩体产生的原因、危岩体移动变形情况,在对危岩体变形破坏机制的计算分析的基础上,提出了治理煤层采空区承重阻滑防治方案,工程方案实施验收后5年的观测证明,危岩体移动、变形得到了控制,危岩体的整体稳定性大大增强。

It is not common to see a geological disaster causes by coal mining operation in China. The dangerous rock mass in Lianzi Cliff of Throe Gorges, Yangtse River is one of the geological disasters. With the existing technological means, the geological disaster to be occurred can be controlled. The paper stated the cause of the dangerous rock mass occurred in the Lianzi Cliff and the movement and deformation of the dangerous rock mass. Base on the calculation analysis of deformation failure mechanism, the paper provided the anti sliding plan with loading for the goal area in the seam. After 5 years of the project of the anti sliding with loading completed, the measured resuits showed that the movement and deformation of the dangerous rock mass had been controlled with a good result of prevention and control. The stability of the dangerous rock mass have been highly improved and the prevention and control target of the project was roached.