特高堆石坝心墙监测廊道设计关键技术初步研究  

Preliminary Study on Key Design Technologies of Monitoring Corridor in Clay Wall of Super-high Rockfill Dam

作　　者：韩朝军 程瑞林 湛正刚 慕洪友 张丙印[2] 于玉贞[2] HAN Chaojun;CHENG Ruilin;ZHAN Zhenggang;MU Hongyou;ZHANG Bingyin;YU Yuzhen(PowerChina Guiyang Engineering Corporation Limited,Guiyang 550081,Guizhou,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081 [2]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水力发电》2019年第11期53-57,共5页Water Power

摘　　要：对于特高心墙堆石坝而言,受传统监测仪器适用性的影响,监测技术的可靠性亟待改善,坝体心墙监测廊道为问题的解决提供了一种新途径。以某特高心墙堆石坝(坝高315 m)为例,开展了心墙监测廊道的可行性及关键技术研究,提出了廊道结构自身安全性、刚性廊道与心墙土料及岸坡之间的变形协调性、廊道周边的防渗抗渗以及接缝止水系统的可靠性及耐久性等,是工程建设需重点解决好的关键问题。基于非连续接触算法的精细化有限元模拟方法,初步研究了廊道应力变形特性,并对今后需进一步深入研究的方向提出了建议。Due to the limitation of the applicability of traditional monitoring instruments,the reliability of monitoring technology needs to be improved for the super-high core wall rockfill dam.The arrangement of monitoring corridor in the core wall of rockfill dam provides a new way to solve the problem.Taking a super-high core wall rockfill dam with a height of 315 m as an example,the feasibility and key technologies of monitoring corridor are researched,and it is proposed that the safety of corridor structure,the deformation coordination between rigid corridor and flexible soil,the permeability around corridor,and the reliability and durability of connection and stop-water system are the key technical problems during engineering construction.Based on non-continuous contact algorithm and fine FEM simulation method,the stress and deformation characteristics of corridor are preliminarily studied,and several suggestions for further study are also presented.

关 键 词：心墙 监测廊道 非连续接触算法 关键技术 特高堆石坝 

分 类 号：TV641[水利工程—水利水电工程]