Proceedings of the 2025 6th International Conference on Urban Construction and Management Engineering (ICUCME 2025)

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Discussion on Claims for Hydropower Projects Caused by Changes in Rock Grades

Authors
Jianlong Zhang1, *, Long Zhao1, Jue Wang1, Tianxia Qiao1, Yuxie Zhang1
1Pumped-Storage Technological & Economic Research Institute State Grid Xinyuan Company LTD, Xicheng District, Beijing, 100761, China
*Corresponding author. Email: 253858387@qq.com
Corresponding Author
Jianlong Zhang
Available Online 23 September 2025.
DOI
10.2991/978-94-6463-847-9_21How to use a DOI?
Keywords
Rock grade; Hydropower engineering; Claim compensation
Abstract

Under normal circumstances, the rock grades of hydropower projects do not change. However, in cases where the geological conditions are complex or the geological exploration in the early stage is insufficient, the actual rock mass conditions exposed after on-site excavation will change, which in turn will cause changes in the investment for hydropower engineering construction. Based on this, this paper discusses the investment changes caused by the variation of rock grades during the construction of hydropower projects. Through the detailed analysis of the assessment of rock grades and the cost changes caused by the variation of rock grades, it further proposes the conditions, supporting materials and claim procedures that should be met for claims due to the variation of rock grades, which can be referred to and drawn upon by both the contracting and subcontracting parties of water supply and power projects. This paper also deeply analyzes the process of rock grade determination, as well as the relevant regulations on rock grades in the model bidding documents for hydropower projects and the survey and design specifications, and puts forward suggestions for modification.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2025 6th International Conference on Urban Construction and Management Engineering (ICUCME 2025)
Series
Advances in Engineering Research
Publication Date
23 September 2025
ISBN
978-94-6463-847-9
ISSN
2352-5401
DOI
10.2991/978-94-6463-847-9_21How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Jianlong Zhang
AU  - Long Zhao
AU  - Jue Wang
AU  - Tianxia Qiao
AU  - Yuxie Zhang
PY  - 2025
DA  - 2025/09/23
TI  - Discussion on Claims for Hydropower Projects Caused by Changes in Rock Grades
BT  - Proceedings of the 2025 6th International Conference on Urban Construction and Management Engineering (ICUCME 2025)
PB  - Atlantis Press
SP  - 190
EP  - 197
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-847-9_21
DO  - 10.2991/978-94-6463-847-9_21
ID  - Zhang2025
ER  -