地质力学学报Issue(2)：298-308,11.
天水锻压机床厂滑坡变形破坏机制及形成演化
DEFORMATION MECHANISM AND EVOLUTIONARY PROCESS OF THE TIANSHUI FORGING MACHINE PLANT LANDSLIDE IN GANSU
摘要
Abstract
The Tianshui Forging Machine Plant Landslide in Gansu Province happened on August 11, 1990 with a volume of 1�4 × 106 m3 . It is a loess interface landslide occurring along the loess/mudstone interface. The landslide body is mainly composed of secondary loess, and the slip bed is mainly composed of Quaternary loess and Neogene mudstone. The landslide is controlled by the double⁃layered structure of the slope in area, being induced by some factors such as engineering excavation, rainfall and irrigation. The research on the deformation mechanism and evolutionary process of the landslide based on geological survey and engineering drilling shows that the formation process can be divided as follow: the formation period of high and steep side slopes; the landslide incubation period;sliding surface through critical period;landslide falling and accumulating period;landslide revival and deformation period. Field investigation and engineering drilling indicate that the landslide is unstable at present. It can most likely revive and slide again if there is earthquake or heavy rainfall. The results can provide theoretical basis for the disaster warning of this kind of landslide.关键词
天水锻压机床厂滑坡/工程切坡/变形破坏机制/形成演化Key words
the Tianshui Forging Machine Plant Landslide/engineering excavation/deformation mechanism/evolutionary process分类
天文与地球科学引用本文复制引用
田尤,杨为民,刘廷,李浩,程小杰..天水锻压机床厂滑坡变形破坏机制及形成演化[J].地质力学学报,2015,(2):298-308,11.基金项目
中国地质调查局地质调查项目“西秦岭北缘断裂带天水段地震地质灾害调查评价”项目 （）
