[1]郑海君,张品萃,曹运江,等.西南某水电站工程边坡软岩时效变形特性研究[J].水土保持研究,2007,14(03):192-194,199.
　ZHENG Hai-jun,ZHANG Pin-cui,CAO Yun-jiang,et al.Study on Time-Dependent Deformation of Soft Rock of the Engineering Slope in a Hydroelectric Station in Southwest of China[J].Research of Soil and Water Conservation,2007,14(03):192-194,199.
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西南某水电站工程边坡软岩时效变形特性研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 14 期数: 2007年03期 页码: 192-194,199 栏目: 出版日期: 1900-01-01
Title:
Study on Time-Dependent Deformation of Soft Rock of the Engineering Slope in a Hydroelectric Station in Southwest of China
作者:
郑海君1, 张品萃1, 曹运江1,2, 付小敏1, 谭文俊3
1. 成都理工大学地质灾害防治与地质环境保护国家专业实验室, 成都, 610059;
2. 湖南科技大学土木工程学院, 湖南, 湘潭, 411201;
3. 四川准达岩土工程公司, 成都, 610072
Author(s):
ZHENG Hai-jun1, ZHANG Pin-cui1, CAO Yun-jiang1,2, FU Xiao-min1, TAN Wen-jun3
1. National Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;
2. School of Civil Engineering of Hunan University of Science and Technology, Xiangtan 411201, China;
3. Chengdu Hydroelectric Investigation & Design Institute of SPC, State Power Company, Chengdu 610072, China
关键词:
软岩; 流变试验; 时效本构方程; 边坡稳定性
Keywords:
soft rock; rheological test; time-dependent constitutive equation; slope stability
分类号:
P642.4;TV742
摘要:
以研究西南某大型水电站大坝在蓄水后的长期稳定性为背景，以室内饱水直剪流变试验为手段，系统地研究了坝区内高边坡软岩的流变特性.通过对所有流变曲线的分析，获得了长期强度参数，并建立了各种类型软岩和软弱结构面的时效本构方程，得出该区软岩在饱水状态下，长期强度参数较瞬时变形降低了约60%.结论表明该区软岩的时效变形很明显，这个特性是坝区多个开挖边坡可能沿软岩蠕滑拉裂破坏的潜在因素，表明其存在对边坡及未来的稳定性起主要的控制作用.
Abstract:
To study long-time stability of dam of a southwestern hydropower station after sluicing,the rheology properties of soft rock are researched by laboratory long-term direct shear in the saturated situation,the time-dependent deformation characteristics studying on the high slope soft rock and the weak structural plane have been done systematically.Through the analysis of all of the curves,the long-time strength parameters were acquired,and the time-dependent constitutive equation of each type of soft rocks and weak structural planes was established,the long-time cohesive force of the weak structural plane decreased about 60% in contrast with that of saturated quick shear test.The results indicate that time-dependent deformation of soft rock is also obvious and would be the potential factor to make the excavated slope creepripredly destructed along the soft rock and to play a mainly controlling role to the long-term stability.

参考文献/References:

[1] 孔德坊.工程岩土学[M].北京:地质出版社, 1991.
[2] 杨绪波, 黄润秋, 等.紫坪铺水电站2#泄洪洞进水口边坡变形特征及其机理研究[J].岩石力学与工程学报, 2005, 24(12):2 035-2 040.
[3] Vutukuri, V S, Lama, R D, Saluja, S S.Handbook on Mechanical Properties of Rocks[M].1974.Ⅰ-Ⅳ, 1978.
[4] 邓荣贵, 张倬元.锦屏水电站坝区绿片岩结构及力学特性研究[J].成都理工学院学报, 2001, 28(1):93-97.
[5] 黄润秋, 张倬元, 王士天, 等.黄河拉西瓦水电站高边坡稳定性的系统工程地质研究[M].成都:成都科技大学出版社, 1991.
[6] 曹树刚, 边金, 等.软岩蠕变试验与理论模型分析的对比[J].重庆大学学报自然科学版, 2002, 25(7):96-98.

备注/Memo

收稿日期:2006-6-16
基金项目:地质灾害防治与地质环境保护国家专业实验室开放基金资助(项目编号：GZ2005-07)
作者简介:郑海君(1979- )，女，硕士，2005年毕业于成都理工大学岩土工程专业，主要从事岩石力学试验与土工试验研究与教学方面的工作.

更新日期/Last Update: 1900-01-01