高重力坝坝基岩体变形模量回复研究  

Study on recovery of deformation modulus of foundation rock mass of high gravity dam

作　　者：廖彬 聂德新[1] LIAO Bing;NIE Dexin(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China;Sichuan Provincial Investment Group Co.,Ltd.,Chengdu 610059,China)

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室(成都理工大学),成都610059 [2]四川省投资集团有限责任公司,成都610059

出　　处：《成都理工大学学报（自然科学版）》2021年第3期354-365,共12页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金项目(40072090)。

摘　　要：以雅砻江官地水电站高混凝土重力坝的坝基作为研究载体,以弹性力学虎克定律和相关弹性常数间的理论关系为基础,建立岩体模量与岩体应力、体积变化率的理论公式,初步将其应用在官地水电站坝基大规模开挖、减载所引起的岩体模量的变化,和高混凝土重力坝建成后较大荷重、较高压应力下对开挖坝基松弛岩体的压密、变形模量的回复方面,获得了坝基岩体在较高压应力下变形模量回复的量值并有所提高的成果。Based on the theoretical relationship between Hooke s law of elasticity and the related elastic constants,the foundation of the high concrete gravity dam of Guandi Hydropower Station of Yalong River is studied by the establishment of theoretical formula of rock mass modulus,rock mass stress and volume change rate,which is applied to the change of rock mass modulus caused by large scale excavation and load reduction of the dam foundation of Guandi Hydropower Station,and to the recovery of the compression and deformation modulus of the relaxed rock mass after the construction of the high concrete gravity dam under large load and high pressure stress.In this way,the magnitude of deformation modulus of the foundation rock mass under high compressive stress is obtained.

关 键 词：高混凝土重力坝 岩体卸荷 岩体加载 变形模量 压密回复 

分 类 号：TU452[建筑科学—岩土工程]