Utilization of weathered rock mass as the China Three Gorges Project Dam foundation

Utilization of weathered rock mass as the China Three Gorges Project Dam foundation The utilization of the weathered rock mass in the Three Gorges Dam Area is one of the key geotechnical issues for the China Three Gorges Project (CTGP) construction. Engineering geological investigations and tests had been carried out to study the physical, chemical, mineral and mechanical properties and distribution characteristics in detail for more than 30 years. The classification of the weathered zone has been further divided. The utilization of the lower part of the weakly weathered zone as the Three Gorges dam foundation rock mass had been researched by consolidation grouting test. The research results show that: (1) the weathered crust rock mass in China Three Gorges Dam Area has a thickness of 40–70 m, with four different weathering state rock as “loose, half loose, half hard and hard” and four different weathered zones as “complete, intense, weak and light”. (2) It was feasible that the lower part of the weakly weathered zone could be used as the dam foundation after consolidation grouting treatment. (3) It has set a rock mass quality evaluation criterion with CTGP characteristic to access the foundation rock mass quality—“Three Gorges YZP Method”. (4) The CTGP practice shows that it is successful for the utilization of the lower part of the weakly weathered rock mass as the dam foundation, saving a large amount of construction investment and shortening a certain amount of construction time for the CTGP. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Innovative Infrastructure Solutions Springer Journals

Utilization of weathered rock mass as the China Three Gorges Project Dam foundation

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Publisher
Springer International Publishing
Copyright
Copyright © 2017 by Springer International Publishing AG
Subject
Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Environmental Science and Engineering; Geoengineering, Foundations, Hydraulics
ISSN
2364-4176
eISSN
2364-4184
D.O.I.
10.1007/s41062-017-0100-9
Publisher site
See Article on Publisher Site

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