Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced Erosion
Water inrush is a major geological hazard for safe mining and tunnel construction. For the water inrush channel containing mud, sand, and other sediments, it is difficult to predict the change of permeability and water surge, which makes disaster prevention difficult. As a typical water inrush chann...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-11-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/12/11/3188 |
| _version_ | 1797547925467824128 |
|---|---|
| author | Jianli Shao Qi Zhang Xintao Wu Yu Lei Xunan Wu Zaiyong Wang |
| author_facet | Jianli Shao Qi Zhang Xintao Wu Yu Lei Xunan Wu Zaiyong Wang |
| author_sort | Jianli Shao |
| collection | DOAJ |
| description | Water inrush is a major geological hazard for safe mining and tunnel construction. For the water inrush channel containing mud, sand, and other sediments, it is difficult to predict the change of permeability and water surge, which makes disaster prevention difficult. As a typical water inrush channel, a filled fracture under seepage-induced erosion needs to be focused. In this work, a numerical model for the evolution of flow in a filled fracture under seepage-induced erosion was established, which included the seepage velocity, hydraulic erosion, and permeability of the filling medium. The effects of joint roughness coefficient (JRC) and homogeneity of the filling medium on the seepage evolution are discussed. The results showed that the fracture seepage properties experienced a non-linear change process, and the evolution can be divided into three phases: the slowly varying phase, the rapidly varying phase, and the stable phase. The increase of the JRC hindered the development in flow velocity and erosion. Compared with low homogeneous filling medium, pores in the high homogeneous filling medium were easier to expand and connect, and the seepage characteristics evolved faster. The model established in this study will help to understand the seepage evolution of filled fractures, and can be used to predict the permeability of filled fractures in engineering geology. |
| first_indexed | 2024-03-10T14:51:03Z |
| format | Article |
| id | doaj.art-a814fe1042e44ce3a5959bf64171c9a7 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T14:51:03Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-a814fe1042e44ce3a5959bf64171c9a72023-11-20T20:59:05ZengMDPI AGWater2073-44412020-11-011211318810.3390/w12113188Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced ErosionJianli Shao0Qi Zhang1Xintao Wu2Yu Lei3Xunan Wu4Zaiyong Wang5State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaDepartment of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USAState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaWater inrush is a major geological hazard for safe mining and tunnel construction. For the water inrush channel containing mud, sand, and other sediments, it is difficult to predict the change of permeability and water surge, which makes disaster prevention difficult. As a typical water inrush channel, a filled fracture under seepage-induced erosion needs to be focused. In this work, a numerical model for the evolution of flow in a filled fracture under seepage-induced erosion was established, which included the seepage velocity, hydraulic erosion, and permeability of the filling medium. The effects of joint roughness coefficient (JRC) and homogeneity of the filling medium on the seepage evolution are discussed. The results showed that the fracture seepage properties experienced a non-linear change process, and the evolution can be divided into three phases: the slowly varying phase, the rapidly varying phase, and the stable phase. The increase of the JRC hindered the development in flow velocity and erosion. Compared with low homogeneous filling medium, pores in the high homogeneous filling medium were easier to expand and connect, and the seepage characteristics evolved faster. The model established in this study will help to understand the seepage evolution of filled fractures, and can be used to predict the permeability of filled fractures in engineering geology.https://www.mdpi.com/2073-4441/12/11/3188hydraulic erosionfractureseepageevolutionfilling medium |
| spellingShingle | Jianli Shao Qi Zhang Xintao Wu Yu Lei Xunan Wu Zaiyong Wang Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced Erosion Water hydraulic erosion fracture seepage evolution filling medium |
| title | Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced Erosion |
| title_full | Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced Erosion |
| title_fullStr | Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced Erosion |
| title_full_unstemmed | Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced Erosion |
| title_short | Investigation on the Water Flow Evolution in a Filled Fracture under Seepage-Induced Erosion |
| title_sort | investigation on the water flow evolution in a filled fracture under seepage induced erosion |
| topic | hydraulic erosion fracture seepage evolution filling medium |
| url | https://www.mdpi.com/2073-4441/12/11/3188 |
| work_keys_str_mv | AT jianlishao investigationonthewaterflowevolutioninafilledfractureunderseepageinducederosion AT qizhang investigationonthewaterflowevolutioninafilledfractureunderseepageinducederosion AT xintaowu investigationonthewaterflowevolutioninafilledfractureunderseepageinducederosion AT yulei investigationonthewaterflowevolutioninafilledfractureunderseepageinducederosion AT xunanwu investigationonthewaterflowevolutioninafilledfractureunderseepageinducederosion AT zaiyongwang investigationonthewaterflowevolutioninafilledfractureunderseepageinducederosion |