某水电站坝基碎裂岩工程性状及处理措施

邓争荣; 吴树良; 闵文; 雷世兵; 杨友刚

doi:10.3969/j.issn.1001-5485.2013.06.013

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raybet体育在线院报 ›› 2013, Vol. 30 ›› Issue (6) : 58-62. DOI: 10.3969/j.issn.1001-5485.2013.06.013

岩土工程

某水电站坝基碎裂岩工程性状及处理措施

邓争荣，吴树良，闵文，雷世兵，杨友刚

作者信息 +

Engineering Characteristics and Treatment Measures of CataclasiteRockmass at the Dam Foundation of Hydropower Station

DENG Zheng-rong, WU Shu-liang, MIN Wen, LEI Shi-bing, YANG You-gang

Author information +

文章历史 +

摘要

某峡谷区水电站坝址发育有不属于活动断裂的区域性断裂，穿越大坝河床近岸坝基，将其划分为碎裂岩带和软弱构造岩带，其中坝基范围碎裂岩带宽度约86～92 m、软弱构造岩带宽度不超过2.1 m。为了提供该水电站工程设计所需的工程地质资料，工程勘察论证的重点研究内容之一就是查明碎裂岩工程性状，包括分布及规模、矿物成份、物理力学性质、工程特性，同时研究对应的处理措施。结果表明：微新状碎裂岩可以作为最大坝高200 m余的混凝土重力坝坝基岩体所利用，进行坝基范围建基面下深度15～30 m全面积加强固结灌浆等处理措施后，能满足建坝要求。研究成果可为其它工程类似断层碎裂岩性状研究提供参考。

Abstract

Inactive and regional fault has developed at the dam site of a hydropower station planned to be built in a gorge area. The fault, passing through the dam foundation at river bankside, can be divided into cataclasite zones and weak tectonic rock zones, of which the cataclasite zone width is about 86m to 92m and the weak tectonic rock zone width is less than 2.1m within the dam foundation. To provide geological data for the hydropower project design, one of the major tasks of engineering investigation is to ascertain the engineering characteristics of cataclasite rockmass, which includes distribution and scales, mineral components, physico-mechanical properties, and engineering properties. Furthermore, the corresponding treatment measures are presented. The research results indicate that slightly weathered and fresh cataclasite rockmass could be used for the foundation of concrete gravity dam whose maximum height is over 200m. It could meet the requirements of dam construction after full-area strengthening and consolidation grouting to depth 15m to 30m under the constructive foundation surface within the dam foundation. The research could provide reference for similar faults and cataclasites of other projects.

导出引用

邓争荣，吴树良，闵文，雷世兵，杨友刚. 某水电站坝基碎裂岩工程性状及处理措施[J]. raybet体育在线院报. 2013, 30(6): 58-62 https://doi.org/10.3969/j.issn.1001-5485.2013.06.013

DENG Zheng-rong, WU Shu-liang, MIN Wen, LEI Shi-bing, YANG You-gang. Engineering Characteristics and Treatment Measures of CataclasiteRockmass at the Dam Foundation of Hydropower Station[J]. Journal of Changjiang River Scientific Research Institute. 2013, 30(6): 58-62 https://doi.org/10.3969/j.issn.1001-5485.2013.06.013

中图分类号： P642.3|TV223.3

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