高心墙堆石坝蓄水初期裂缝成因反演分析研究  

Study on the Causes of Cracks at Early Impoundment Stage of High-Core Rockfill Dams

作　　者：黄晓洪 焦修明[2] 王良[2] 魏匡民[3] 邓曌 HUANG Xiaohong;JIAO Xiuming;WANG Liang;WEI Kuangmin;DENG Zhao(Xinchang County Water Resources and Hydropower Bureau,Shaoxing 312500,China;Zhejiang Institute of Hydraulics and Estuary,Hangzhou 310020,China;Nanjing Hydraulic Research Institute,Nanjing 210024,China)

机构地区：[1]新昌县水利水电局,浙江绍兴312500 [2]浙江省水利河口研究院,浙江杭州310020 [3]南京水利科学研究院,南京210024

出　　处：《三峡大学学报(自然科学版)》2025年第2期19-25,共7页Journal of China Three Gorges University:Natural Sciences

基　　金：国家自然科学基金项目(52109094);中央级公益性科研院所基本科研业务费项目(Y322003,Y320005);国家重点研发计划(2022YFC3080100)。

摘　　要：坝体裂缝是现代土石坝工程面临的重要问题之一,本文基于某心墙堆石坝坝体变形监测数据,采用有效应力法有限元反馈了坝体变形过程,采用倾度法预测了坝体裂缝范围和发展趋势.数值方法与实测资料相结合对坝体初期蓄水裂缝原因进行了研究分析.结果表明:蓄水初期上游坝壳料的湿化、流变效应是引起坝体裂缝的主要因素,随着坝体后期变形发展,坝体裂缝有向心墙发展的趋势,并于运行3年后趋于稳定.为了保证大坝安全运行,建议加强监测并采取一定的裂缝治理措施.Dam cracking is one of the important problems faced by modern rockfill dam engineering.In the paper,based on the deformation monitoring data of a high-core rockfill dam,the finite element method was used to back analyze and predict the deformation process of the dam,and the inclination method was used to predict the scope of dam cracking and the development trend.The causes of dam cracks were studied and analyzed by combining numerical methods and measured data.The results show that the wetting and rheological effects of the upstream dam material at early impoundment stage are the main factors causing the cracks in the dam.With the development of deformation,the cracks have a tendency to develop towards the core,and will be stabilized after 3 years of operation.In order to ensure the safe operation of the dam,it is recommended to strengthen the monitoring and take measures to prevent cracks.

关 键 词：心墙堆石坝 结构裂缝 有效应力法 工程措施 

分 类 号：TU45[建筑科学—岩土工程]