| 四川盆地含膏盐红层特征及坝基工程地质问题(I) |
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| 引用本文： | 王子忠,许模.四川盆地含膏盐红层特征及坝基工程地质问题(I)[J].水利水电技术,2011,42(3). |
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| 作者姓名： | 王子忠 许模 |
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| 作者单位： | 1. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都,610059;四川省水利水电勘测设计研究院,四川成都,610072
2. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都,610059 |
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| 摘 要： | 以四川盆地合膏盐(石膏、芒硝、钙芒硝)红层为例,论述了含膏盐红层的沉积环境及其分布范围,膏盐矿物在红层岩体中的分布及其矿物学特征,讨论了由于膏盐矿物溶蚀形成的有别于常规碳酸盐岩岩溶作用的红层类岩溶作用.依据水电工程实例,描述了红层坝基类岩溶形态,分析了类岩溶和溶蚀下限机理,同时给出了四川盆地几各水电工程类岩溶红层坝基的溶蚀下限深度.为确定坝基岩体防渗深度提出了相关地质依据.
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| 关 键 词： | 四川盆地 红层 膏盐 类岩溶 岩溶形态 溶蚀机理 坝基防渗 |
Characteristics of red bed containing saline deposit and engineering geological issues of dam foundation in Sichuan Basin(I) |
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| WANG Zizhong,XU Mo.Characteristics of red bed containing saline deposit and engineering geological issues of dam foundation in Sichuan Basin(I)[J].Water Resources and Hydropower Engineering,2011,42(3). |
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| Authors: | WANG Zizhong XU Mo |
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| Affiliation: | WANG Zizhong1,2,XU Mo1(1.State Key Laboratory of Geo-hazard Prevention and Geo-environment Protection,Chengdu University of Technology,Chengdu 610059,Sichuan,China,2.Sichuan Water Resources & Hydroelectric Investigation and Design Institute,Chengdu 610072,China) |
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| Abstract: | Taking the red bed containing saline deposit(gypsum,mirabilite,glauberite) in Sichuan Basin as the studying case,the depositional environment and the scope of the red beds containing saline deposits therein,as well as the distribution of the saline deposits within the rock masses of the red beds and their mineralogical features are expounded herein,and then,the pseudo-karst action resulted from the erosion of the saline deposits in the red beds that is different from the normal karst action of carbonate roc... |
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| Keywords: | Sichuan Basin red bed saline deposit pseudo-karst karst morphology erosion mechanism anti-seepage of dam foundation |
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