软弱岩土突发地质灾害的动态流变力学机理分析  

Analysis on Dynamic Rheologic Mechanics of Sudden Geologic Disaster of Soft Rock-soil

作　　者：胡华[1] 

机构地区：[1]厦门大学建筑与土木工程学院,福建厦门361005

出　　处：《灾害学》2005年第4期13-17,共5页Journal of Catastrophology

基　　金：福建省自然科学基金计划资助(D0410008)

摘　　要：结合我国近几年软弱岩土突发地质灾害的实际情况,分析探讨了动态流变力学理论方法在地质灾害突发机理、灾害监测预报等方面的研究技术线路与应用前景。测试了软弱岩土在动态载荷作用下的动态流变参数,建立了动态流变力学模型,推导出新的流变方程。为进一步研究突发地质灾害的临界力学条件、流变动力学方程、动力学关键指标等奠定了基础;对揭示动载作用下软弱岩土加速流变导致地质灾害的流变动力学机制、改进和完善灾害监测预报理论、提高预报的科学性和准确性具有十分重要的理论和现实意义。Combining with the facts of geologic disasters of soft rock-soil in recent years in Chinas, the author discusses the train of thoughts and application foreground of the research on sudden geologic disasters of soft rock-soil disaster and their monitoring and prediction by use of the theory and method of dynamic rheologic mechanics. The dynamic rheologic mechanics parameters of soft rock-soil are tested under dynamic loading, the dynamic rheologic mechanics model of soft rock-soil is established and the rheologic equation is deduced. It settles foundation for the study on critical mechanics condition, rheologic dynamic equation and dynamic key index of sudden geological disasters. All these are of important and actual significance for us to find out the rheologic dynamic mechanism of sudden geological disasters of soft rock-soil under dynamic loading, improve and perfect the theory of hazard monitoring and prediction and increase scientificity and correctness of hazard prediction.

关 键 词：动态载荷 软弱岩土 加速流变 流变动力学 地质灾害 

分 类 号：P642.2[天文地球—工程地质学]