{"title":"Coupling analysis of stress field and seepage field in foundation pit dewatering and optimization design of reinjection","authors":"","doi":"10.1016/j.tsep.2024.102778","DOIUrl":null,"url":null,"abstract":"<div><p>In deep excavation projects in confined strata, due to the high water content and high pressure head of the strata, problems such as excessive horizontal displacement of the retaining structure and sudden surge at the bottom of the pit often occur during the excavation process. To solve these problems, it is usually necessary to carry out dewatering construction. However, precipitation construction can cause serious damage to groundwater resources and the surrounding environment. Therefore, in order to protect groundwater resources and the environment, it is necessary to carry out recharge construction after precipitation construction. This article is based on the coupling analysis of stress field and seepage field in foundation pit dewatering. By studying the interaction between pumping wells and buildings in foundation pit engineering, the idea of optimizing the design of foundation pit recharge is proposed. Based on the coupling analysis results of the stress field and seepage field in the foundation pit dewatering, the reasonable position and water volume of the pumping well can be determined to achieve the effect of foundation pit dewatering. At the same time, based on the decrease in groundwater level of the building, the start time and amount of reinjection water can be determined to avoid wasting water resources and increasing the burden on the pumping well due to premature reinjection. By optimizing the design of reasonable foundation pit recharge, water level changes in the project can be better controlled, settlement problems can be avoided, and the safety and efficiency of the project can be improved.</p></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":null,"pages":null},"PeriodicalIF":5.1000,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science and Engineering Progress","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451904924003962","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
In deep excavation projects in confined strata, due to the high water content and high pressure head of the strata, problems such as excessive horizontal displacement of the retaining structure and sudden surge at the bottom of the pit often occur during the excavation process. To solve these problems, it is usually necessary to carry out dewatering construction. However, precipitation construction can cause serious damage to groundwater resources and the surrounding environment. Therefore, in order to protect groundwater resources and the environment, it is necessary to carry out recharge construction after precipitation construction. This article is based on the coupling analysis of stress field and seepage field in foundation pit dewatering. By studying the interaction between pumping wells and buildings in foundation pit engineering, the idea of optimizing the design of foundation pit recharge is proposed. Based on the coupling analysis results of the stress field and seepage field in the foundation pit dewatering, the reasonable position and water volume of the pumping well can be determined to achieve the effect of foundation pit dewatering. At the same time, based on the decrease in groundwater level of the building, the start time and amount of reinjection water can be determined to avoid wasting water resources and increasing the burden on the pumping well due to premature reinjection. By optimizing the design of reasonable foundation pit recharge, water level changes in the project can be better controlled, settlement problems can be avoided, and the safety and efficiency of the project can be improved.
期刊介绍：
Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.
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