基于水力压裂地应力测试的水电站竖井围岩稳定性分析与衬砌设计优化研究OA
Stability Analysis of Surrounding Rock and Optimization of Lining Design for a Hydropower Station Shaft Based on Hydraulic Fracturing In-Situ Stress Testing
为满足清洁能源工程中地下洞室稳定性设计的关键需求,以德尔西水电站竖井工程为例,结合国际岩石力学学会建议与 ASTM-D4645 国际标准采用水力压裂地应力测量技术(HTPF/HF 测试方法)及具有较好技术保证的 HJ 测试方法,在竖井 ZK38 位置钻孔,并在深度 400.2 m 实施系统的原位应力测试.通过分层测量75 m～380 m 深度,获取三维地应力场分布及岩体水力压裂强度,其强度范围处于 4.2 MPa～6.9 MPa 之间.该研究成果可为水电站地下结构的优化设计提供关键的地质力学参数,有助于降低建设成本并提升工程安全性,具有重要的理论与实践价值.
To meet the critical requirements for the stability design of underground caverns in clean-energy projects,this paper takes the shaft project of the Deersi Hydropower Station as an example.In accordance with the recommendations of the International Society for Rock Mechanics and the ASTM-D4645 international standard,hydraulic fracturing in-situ stress measurement technology,including the HTPF/HF test method and the technically reliable HJ test method,was adopted.A borehole was drilled at shaft location ZK38,and systematic in-situ stress tests were carried out at a depth of 400.2 m.Layered measurements from depths of 75 m to 380 m were conducted to obtain the distribution of the three-dimensional in-situ stress field and the hydraulic fracturing strength of the rock mass,which ranged from 4.2 MPa to 6.9 MPa.The results can provide key geomechanical parameters for the optimal design of underground structures in hydropower stations,helping reduce construction costs and improve engineering safety,and therefore have important theoretical and practical value.
张淼;王彦博;李珊珊
中国电建集团西北勘测设计研究院有限公司,陕西 西安 710065西安理工大学旱区水工程生态环境全国重点实验室,陕西 西安 710048西安理工大学旱区水工程生态环境全国重点实验室,陕西 西安 710048
建筑与水利
地应力状态劈裂强度水力压裂应力测量
In-situ stress statesplitting strengthhydraulic fracturingstress measurement
《陕西水利》 2026 (8)
1-3,7,4
陕西省自然科学基础研究计划项目(2023-JC-QN-0395)
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