加固需求度评价在龙滩水电站左岸边坡加固工程中的应用  

APPLICATION OF EVALUATION OF REINFORCEMENT DEMAND DEGREE TO REINFORCEMENT OF LEFT BANK OF LONGTAN HYDROPOWER STATION

作　　者：郭华锋[1] 杨志法[2] 刘大安[2] 安光明[2] 

机构地区：[1]中国建筑科学研究院建筑结构研究所,北京100013 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《岩石力学与工程学报》2008年第A02期3661-3666,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(40472145);国家重点基础发展规划(973)项目(2002CB412701)

摘　　要：边坡加固效果的评价是边坡加固的关键环节之一,边坡加固效果的评价方法大致可分为两类:第一类是工程地质条件分析和岩石力学研究的定性或半稳定性方法,其不足在于在预测和评价准确度上很难得到保证;第二类是基于现场监测分析的定量评价方法,其缺点是在测点安装并作监测之后才有可能根据监测数据做出判断。加固需求度(DRD)是一种新提出的评价方法,由于可将基于工程地质条件岩石力学研究评价和基于现场监测的评价进行综合集成,发挥两类方法的长处并弥补各自的不足,具有独特优势。广西龙滩水电站左岸开挖形成的组合坡高达435m,边坡的变形和稳定直接关系着工程建设的成败,以左岸A区边坡为例进行加固需求度评价的应用研究,结果表明其加固效果较好,与监测数据及现场调查的情况相符。Evaluation of the effects of slope reinforcement is one of the key factors in slope reinforcement. Evaluation methods can be broadly classified into two categories. The first category is the analysis of engineering geological conditions and qualitative research or semi-stable method on rock mechanical, which is short of accuracy. The second category is the quantitative evaluation method based on the analysis of field monitoring, which is insufficient because the judgment based on the monitoring data cannot be obtained unless the measuring point is installed and monitored. Degree of reinforce demand（DRD） is a new evaluation method with unique advantage, which combines the two methods mentioned above in order to make best use of their advantages and bypass the disadvantages. The 435 m-high excavated slope of Longtan Hydropower Station in Guangxi threatens the security of the dam, whose deformation and stability are of great importance to the power station. To demonstrate the DRD evaluation, an application in zone A on the left bank of the hydropower station is described. The evaluation results indicate that the reinforcement of the slope is fairly effective, which agrees well with the monitoring data and the field investigation results.

关 键 词：边坡工程 加固需求度(DRD) 加固评价 监测 

分 类 号：P642.2[天文地球—工程地质学]