某变形体特征及形成机理研究  

Characteristics and Genetic Mechanism for a Deformable Body

作　　者：苗佳[1] 张洪[1] 陈娟[1] 

机构地区：[1]四川省核工业地质局二八三大队,四川达州635000

出　　处：《四川地质学报》2017年第2期292-296,共5页Acta Geologica Sichuan

摘　　要：变形体位于贵州省铜仁市凉水井镇,斜坡属于典型的软弱基座型缓倾坡内斜坡。基于斜坡工程地质条件及斜坡基本特征,定性分析了斜坡整体变形破坏模式。通过Geostudio2007数值模拟软件,研究斜坡整体变形破坏特征及模式,结果表明:暴雨与天然状态下,因下部泥页岩的塑性变形导致上部灰岩拉裂,斜坡整体失稳模式为塑流—拉裂;暴雨状态下,水对下部泥页岩的软化作用和裂隙充水静水压力及动水压力,加快了岩体破坏,推进斜坡破坏进程。A deformable body at Liangshuijing, Tongren, Guizhou is a typical slope deformable body. The slope is a weak base type flat slope. A slope deformation failure mode based on engineering geological conditions of the slope and by numerical simulation with Geostudio2007 is established. The study indicates that under heavy rain and natural conditions, the slope as a whole has a plastic flow-cracking mode due to plastic deformation of shale in the lower and pull crack of limestone in the upper. The slope deformation and failure speed under heavy rain condition.

关 键 词：变形体 形成机理 研究 凉水井镇 

分 类 号：P642[天文地球—工程地质学]