Impact of Construction Method and Ground Composition on Headrace Tunnel Stability in the Neelum-Jhelum Hydroelectric Project: A Case Study Review from Pakistan
- Title
- Impact of Construction Method and Ground Composition on Headrace Tunnel Stability in the Neelum-Jhelum Hydroelectric Project: A Case Study Review from Pakistan
- Author
- 유한규
- Keywords
- empirical classification; ground composition; project-related features
- Issue Date
- 2021-02
- Publisher
- MDPI
- Citation
- APPLIED SCIENCES-BASEL, v. 11, NO 4, Page. 1655-1655
- Abstract
- During underground construction, the behavior of the ground is influenced by characteristics of the rock mass with situ stresses and ground water, cross section of the excavation area,
excavation method, and the rate of excavation. These fundamental features are considered to ensure
the support and stability of underground excavations and achieve long-term successful operation.
However, the ground composition of the Himalayas hinders tunnel excavation, especially in case
of mechanized tunneling; this causes time and cost overruns. This study has reviewed the recently
completed Neelum–Jhelum Hydroelectric Project; the project complexities, geological environments
involving significant overburden and tectonic stresses, and effects of the excavation method on
tunnel stability were analyzed. The major challenges that were encountered during construction
are discussed herein along with their countermeasures. An analysis of project-related data reveals
that latest techniques and approaches considering rock mechanics were used to complete the project;
the existing approaches and methods were accordingly verified and extended. Apart from ground
composition, the excavation methods used play an important role in the occurrence of severe rock
bursts. Thus, the findings of this study are expected to be helpful for future tunneling projects in
the Himalayas.
- URI
- https://www.proquest.com/docview/2534608900?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/171806
- ISSN
- 20763417
- DOI
- 10.3390/app11041655
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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