重庆市江津区四面山镇头道河危岩带形成演化机制分析

Analysis on formation and development mechanism of Simianshan Toudaohe dangerous rock belt in Jiangjin County of Chongqing

地质灾害严重制约地方经济的发展,正确认识四面山头道河危岩带的形成演化机理,是今后灾害治理的前提。针对危岩带采取地形测量、地质测绘、井探、钻探、物探、同位素14C测年等手段,弄清了危岩带的成因机理。将典型地形剖面进行了地质概化,利用有限元模拟再现了灾害发生的过程,结合近水平软硬互层斜坡变形破坏机制理论,推断了四面山危岩形成演化的历史过程。为今后灾害的治理提供科学依据,同时也为其他类似的地质灾害发生机理认识起到借鉴的作用。

Geology disaster greatly restricts local economy development, so correct understanding on formation and development mechanism of Toudaohe dangerous rock belt is the premise to treat disaster in the future. To ascertain project and hydrogeology condition of dangerous rock belt, landform measurement, geology survey and drawing, exploratory shaft sinking, probing, thing explore, isotope^14C measures is employed. The geology representative landform section has been carried out, and the finite element method intensity to break subtraction up is used to analyze the stability of dangerous rock belt slope. Depending on the deformation failure mechanism theory of slope, history process on evolution of toudaohe dangerous rock is deduced. Those must provide scientific basis for disaster treatment in the future, and give some suggestions for mechanism understanding of other similar geology disaster.