{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,21]],"date-time":"2025-12-21T08:25:00Z","timestamp":1766305500379,"version":"build-2065373602"},"reference-count":41,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T00:00:00Z","timestamp":1710115200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["42102293"],"award-info":[{"award-number":["42102293"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003995","name":"Natural Science Foundation of Anhui Province","doi-asserted-by":"publisher","award":["2108085QD165"],"award-info":[{"award-number":["2108085QD165"]}],"id":[{"id":"10.13039\/501100003995","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["ngwa.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Groundwater"],"published-print":{"date-parts":[[2024,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The safe operation of underground reservoirs and environmental protection heavily rely on the water flow through coal pillar dams in coal mines. Meanwhile, research on the flow characteristics in coal pillar dams has been limited due to their low hydraulic conductivity. To address this gap, this study assembled a novel seepage experimental device and conducted a series of carefully designed seepage experiments to examine the characteristics of low\u2010permeability in coal pillar dams. The experiments aim to explore the relationship between water flux and hydraulic gradient, considering varying core lengths and immersion times. Flow parameters were determined by fitting observed flux\u2010gradient curves with predictions from both Darcy and non\u2010Darcian laws. Several significant results were obtained. First, a noticeable non\u2010linear relationship between water flux and hydraulic gradient was observed, particularly evident at low flow velocities. Second, the non\u2010Darcy laws effectively interpreted the experimental data, with threshold pressure gradients ranging 13.60 to 58.64 for different core lengths. Third, the study established that water immersion significantly affects the flow characteristics of coal pillar dams, resulting in an increased hydraulic conductivity and flow velocity. These findings carry significant implications for the design of coal pillar dams within underground coal mine reservoirs, providing insights for constructing more stable structures and ensuring environmental protection.<\/jats:p>","DOI":"10.1111\/gwat.13401","type":"journal-article","created":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T06:16:21Z","timestamp":1710137781000},"page":"934-944","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Experimental Study of Non\u2010Darcian Flow Characteristics in Low\u2010Permeability Coal Pillar Dams"],"prefix":"10.1111","volume":"62","author":[{"given":"Xu","family":"Li","sequence":"first","affiliation":[{"name":"Coal Industry Engineering Research Center for Comprehensive Prevention and Control of Mine Water Disaster School of Earth and Environment, Anhui University of Science and Technology  Huainan 232001 China"},{"name":"State Key Laboratory of Water Resource Protection and Utilization in Coal Mining CHN Energy Shendong Coal Group Co., Ltd  Beijing China"},{"name":"National Institute of Clean\u2010and\u2010Low\u2010Carbon Energy  Beijing 102209 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peng","family":"Zhu","sequence":"additional","affiliation":[{"name":"Coal Industry Engineering Research Center for Comprehensive Prevention and Control of Mine Water Disaster School of Earth and Environment, Anhui University of Science and Technology  Huainan 232001 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Konghui","family":"Zuo","sequence":"additional","affiliation":[{"name":"Coal Industry Engineering Research Center for Comprehensive Prevention and Control of Mine Water Disaster School of Earth and Environment, Anhui University of Science and Technology  Huainan 232001 China"},{"name":"State Key Laboratory of Water Resource Protection and Utilization in Coal Mining CHN Energy Shendong Coal Group Co., Ltd  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9672-3219","authenticated-orcid":false,"given":"Zhang","family":"Wen","sequence":"additional","affiliation":[{"name":"School of Environmental Studies China University of Geosciences  No. 68 Jincheng Street, East Lake High\u2010Tech Development Zone Wuhan Hubei 430074 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qi","family":"Zhu","sequence":"additional","affiliation":[{"name":"School of Environmental Studies China University of Geosciences  No. 68 Jincheng Street, East Lake High\u2010Tech Development Zone Wuhan Hubei 430074 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiang","family":"Guo","sequence":"additional","affiliation":[{"name":"Coal Industry Engineering Research Center for Comprehensive Prevention and Control of Mine Water Disaster School of Earth and Environment, Anhui University of Science and Technology  Huainan 232001 China"},{"name":"National Institute of Clean\u2010and\u2010Low\u2010Carbon Energy  Beijing 102209 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hamza","family":"Jakada","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering Baze University  Abuja Nigeria"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,3,11]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jwpe.2019.02.003"},{"volume-title":"Hydraulics of Groundwater","year":"1979","author":"Bear J.","key":"e_1_2_7_3_1"},{"key":"e_1_2_7_4_1","unstructured":"Blecker R.F.1970.Saturated flow of water through clay loam subsoil material of the Brolliar and Springerville soil series. 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