构造重力扩展机制的地质力学模拟研究

本文采用相似材料的地质力学机制模拟试验,再现并验证了西安地裂缝的构造重力扩展机制,得出了构造重力扩展机制是西安地裂缝形成的根本成因,同时还得出了工程建筑物只要避开地裂缝一定距离就可以安全布置,以及地裂缝最大可能延深为老第三系地层的中上部等重要结论,初步揭示了现今西安市异常地面沉降的成因,具有一定的理论价值和社会效益。

STUDY ON THE GEOMECHANICAL MODELLING OF TECTONIC GRAVITY SPREADING MECHANISM

Using the techniques of resemble materical geomechanical mechanism simulation, the tectonic gravity spreading mechanism of Xi' an ground fissures is reproduced and verified in this paper. Some important conclusions are drawn out. Such as :the tectonic gravity spreading mechanism is the essential reason for the ground fissures,the engineering buildings can be safely planned if only keeping a definite distance from the ground fissures. The maximum depth of the ground fissures strectching is likely at the up.middle layer of Eogene period,etc. the genesis of the abnormal land subsidence is revealed firstly. So it has obvious theoretical value and social economic benefit.