水库型滑坡复合水动力增载位移响应比物理预测模型及其应用  

PHYSICAL PREDICTION MODEL AND APPLICATION OF COMPOUND HYDRODYNAMIC DISPLACEMENT RESPONSE RATIO WITH DYNAMICS INCREMENT IN RESERVOIR LANDSLIDE

作　　者：郭璐 贺可强[2] 周云 陈海林 贾世祥 GUO Lu;HE Keqiang;ZHOU Yun;CHEN Hailin;JIA Shixiang(College of Civil Engineering and Architecture,Suqian University,Suqian 223800,China;College of Civil Engineering,Qingdao University of Technology,Qingdao 266520,China;Qingdao Geo-Engineering Surveying Institute(Qingdao Geological Exploration and Development Bureau),Qingdao 266101,China)

机构地区：[1]宿迁学院建筑工程学院,宿迁223800 [2]青岛理工大学土木工程学院,青岛266520 [3]青岛地质工程勘察院(青岛地质勘查开发局),青岛266101

出　　处：《工程地质学报》2022年第5期1561-1572,共12页Journal of Engineering Geology

基　　金：自然资源部滨海城市地下空间地质安全重点实验室开放基金项目(资助号:BHKF2021Y05);山东省自然科学基金重点项目(资助号:ZR2020KE004);国家自然科学基金项目(资助号:41372297).

摘　　要：众所周知,库水位变化和降雨复合动力往往是水库型滑坡的变形和破坏主因。本文在系统分析水库型边坡位移、库水位及降雨变化规律基础上,提出与确定了降雨与库水动力转换系数k的计算方法,并通过转换系数k将降雨动力与库水动力这两种不同的水动力增载效应进行了有机耦合叠加,建立了复合水动力增载参数的计算方法。并将复合水动力变化量及其位移变化量作为动力增载及其响应参数,建立了水库型滑坡复合水动力增载位移响应比物理预测参数与模型。同时,运用该模型对白水河滑坡复合水动力作用下的稳定性演化规律进行了系统分析与评价,结果表明该滑坡复合水动力增载位移响应比的变化规律与其稳定性动态演化规律相吻合,表明复合水动力增载位移响应比参数是一种水库型滑坡有效的物理评价参数,可运用该物理评价参数与预测模型对该类滑坡稳定性进行分析与评价。The displacement of colluvial landslide in reservoir area is affected by the compound dynamics of the circulating fluctuation reservoir water level and rainfall.This paper is based on the systematic analysis of the change law of reservoir water level,rainfall and displacements of reservoir landslide.It proposes and determines the calculation method for the conversion coefficient k of rainfall and reservoir water dynamics.Through the conversion coefficient(k),the paper organically couples and superimposes the two different hydrodynamic loading effects of rainfall dynamics and reservoir water dynamics,and establishes the calculation method of compound hydrodynamic loading parameters.Then,the paper takes the compound hydrodynamic change and its displacement change as the dynamic loading parameters and its response parameters respectively,and establishes the physical prediction parameter and model of the displacement response ratio with dynamics increment for the reservoir landslide.At the same time,the paper studies the model to the systematic analysis and evaluation of the stability evolution of Baishuihe landslide under the compound hydrodynamic action.The results show that the change law of the compound hydrodynamic displacement response ratio with dynamics increment for the landslide is consistent with the dynamic evolution law of the stability.It is shown that the compound hydrodynamic displacement response ratio with dynamics increment is an effective physical evaluation parameter of reservoir landslide.The stability of this kind of landslide can be analyzed and evaluated by using this physical evaluation parameter and prediction model.

关 键 词：水库型滑坡 复合水动力 动力增载位移响应比 白水河滑坡 稳定性评价 

分 类 号：P642.22[天文地球—工程地质学]