Permeability variations within mining-induced fractured rock mass and its influence on groundwater inrush
This paper is concerned with the evaluation of permeability of fractured rock mass due to the cover stress re-establishment, which is a major factor in controlling water and gas flow rate induced by mining operations in fractured rock. The case study considered in this paper is based on the results...
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| Veröffentlicht in: | Environmental earth sciences 2016-02, Vol.75 (4), p.1, Article 326 |
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| creator | Wang, W. X. Sui, W. H. Faybishenko, B. Stringfellow, W. T. |
| description | This paper is concerned with the evaluation of permeability of fractured rock mass due to the cover stress re-establishment, which is a major factor in controlling water and gas flow rate induced by mining operations in fractured rock. The case study considered in this paper is based on the results of observations of groundwater inrush and a decrease in water inflow from the fractured roof strata due to mining advancing in the Taiping Coalmine, Shandong Province, China. A conceptual model of an effective porous media was used to assess the permeability distribution in the fractured zone induced by coal mining. The cover stress re-establishment in gob fractured rock mass was evaluated using an empirical formula based on the surface subsidence. A simplified conceptual model of the fractured zone was used to evaluate the deformation of fractured zone along with the evaluation of changes in the rock permeability above the gob due to the cover stress re-establishment. These data were then used to calculate the water inflow rate into the panel. Predicted water inflow rates have been found to be in good agreement with those from monitoring data. This study improved the understanding of the mechanisms of the post-mining cover stress re-establishment on permeability change of the overburden fracture rock strata. These results can then be applied for numerical simulations of the process of overburden failure and consequent groundwater inrush due to coal mining. |
| doi_str_mv | 10.1007/s12665-015-5064-5 |
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X. ; Sui, W. H. ; Faybishenko, B. ; Stringfellow, W. T.</creator><creatorcontrib>Wang, W. X. ; Sui, W. H. ; Faybishenko, B. ; Stringfellow, W. T. ; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)</creatorcontrib><description>This paper is concerned with the evaluation of permeability of fractured rock mass due to the cover stress re-establishment, which is a major factor in controlling water and gas flow rate induced by mining operations in fractured rock. The case study considered in this paper is based on the results of observations of groundwater inrush and a decrease in water inflow from the fractured roof strata due to mining advancing in the Taiping Coalmine, Shandong Province, China. A conceptual model of an effective porous media was used to assess the permeability distribution in the fractured zone induced by coal mining. The cover stress re-establishment in gob fractured rock mass was evaluated using an empirical formula based on the surface subsidence. A simplified conceptual model of the fractured zone was used to evaluate the deformation of fractured zone along with the evaluation of changes in the rock permeability above the gob due to the cover stress re-establishment. These data were then used to calculate the water inflow rate into the panel. Predicted water inflow rates have been found to be in good agreement with those from monitoring data. This study improved the understanding of the mechanisms of the post-mining cover stress re-establishment on permeability change of the overburden fracture rock strata. These results can then be applied for numerical simulations of the process of overburden failure and consequent groundwater inrush due to coal mining.</description><identifier>ISSN: 1866-6280</identifier><identifier>EISSN: 1866-6299</identifier><identifier>DOI: 10.1007/s12665-015-5064-5</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Biogeosciences ; Bulking factor ; Coal mines ; Coal mining ; Cover stress re-establishment ; Earth and Environmental Science ; Earth Sciences ; Environmental Science and Engineering ; ENVIRONMENTAL SCIENCES ; Flow rates ; Fractures ; Geochemistry ; Geology ; Gob ; Groundwater flow ; Groundwater inrush rate ; Hydrology/Water Resources ; Original Article ; Overburden ; Permeability ; Permeability of fractured rock mass ; Porous media ; Rocks ; Terrestrial Pollution ; Underground coal mining ; Water inflow</subject><ispartof>Environmental earth sciences, 2016-02, Vol.75 (4), p.1, Article 326</ispartof><rights>Springer-Verlag Berlin Heidelberg 2016</rights><rights>Environmental Earth Sciences is a copyright of Springer, 2016.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a409t-365457fa9a8bfdcb9469fb2aa27ed886d6a2f54a20d0eef0f0d47100572133e03</citedby><cites>FETCH-LOGICAL-a409t-365457fa9a8bfdcb9469fb2aa27ed886d6a2f54a20d0eef0f0d47100572133e03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12665-015-5064-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12665-015-5064-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1581115$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, W. X.</creatorcontrib><creatorcontrib>Sui, W. H.</creatorcontrib><creatorcontrib>Faybishenko, B.</creatorcontrib><creatorcontrib>Stringfellow, W. T.</creatorcontrib><creatorcontrib>Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)</creatorcontrib><title>Permeability variations within mining-induced fractured rock mass and its influence on groundwater inrush</title><title>Environmental earth sciences</title><addtitle>Environ Earth Sci</addtitle><description>This paper is concerned with the evaluation of permeability of fractured rock mass due to the cover stress re-establishment, which is a major factor in controlling water and gas flow rate induced by mining operations in fractured rock. The case study considered in this paper is based on the results of observations of groundwater inrush and a decrease in water inflow from the fractured roof strata due to mining advancing in the Taiping Coalmine, Shandong Province, China. A conceptual model of an effective porous media was used to assess the permeability distribution in the fractured zone induced by coal mining. The cover stress re-establishment in gob fractured rock mass was evaluated using an empirical formula based on the surface subsidence. A simplified conceptual model of the fractured zone was used to evaluate the deformation of fractured zone along with the evaluation of changes in the rock permeability above the gob due to the cover stress re-establishment. These data were then used to calculate the water inflow rate into the panel. Predicted water inflow rates have been found to be in good agreement with those from monitoring data. This study improved the understanding of the mechanisms of the post-mining cover stress re-establishment on permeability change of the overburden fracture rock strata. These results can then be applied for numerical simulations of the process of overburden failure and consequent groundwater inrush due to coal mining.</description><subject>Biogeosciences</subject><subject>Bulking factor</subject><subject>Coal mines</subject><subject>Coal mining</subject><subject>Cover stress re-establishment</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Environmental Science and Engineering</subject><subject>ENVIRONMENTAL SCIENCES</subject><subject>Flow rates</subject><subject>Fractures</subject><subject>Geochemistry</subject><subject>Geology</subject><subject>Gob</subject><subject>Groundwater flow</subject><subject>Groundwater inrush rate</subject><subject>Hydrology/Water Resources</subject><subject>Original Article</subject><subject>Overburden</subject><subject>Permeability</subject><subject>Permeability of fractured rock mass</subject><subject>Porous media</subject><subject>Rocks</subject><subject>Terrestrial Pollution</subject><subject>Underground coal mining</subject><subject>Water inflow</subject><issn>1866-6280</issn><issn>1866-6299</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kE1LAzEQhoMoWGp_gLeg59V8bLK7Ryl-QUEPeg7ZfLSpbVKTrKX_3pQV8eJcZmCeeRkeAC4xusEINbcJE85ZhTCrGOJ1xU7ABLecV5x03env3KJzMEtpjUpRTDvEJ8C9mrg1sncblw_wS0Ynsws-wb3LK-fh1nnnl5XzelBGQxulykMsUwzqA25lSlB6DV1O0Hm7GYxXBgYPlzEMXu9lNrEs4pBWF-DMyk0ys58-Be8P92_zp2rx8vg8v1tUskZdrihnNWus7GTbW636ruad7YmUpDG6bbnmklhWS4I0MsYii3TdFAusIZhSg-gUXI25IWUnknLZqJUK3huVBWYtxpgV6HqEdjF8DiZlsQ5D9OUvgZuGUE5rSgqFR0rFkFI0Vuyi28p4EBiJo3kxmhfFvDiaF8dkMt6kwvqliX-S_z36BhsRhzY</recordid><startdate>20160201</startdate><enddate>20160201</enddate><creator>Wang, W. 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X. ; Sui, W. H. ; Faybishenko, B. ; Stringfellow, W. T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a409t-365457fa9a8bfdcb9469fb2aa27ed886d6a2f54a20d0eef0f0d47100572133e03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Biogeosciences</topic><topic>Bulking factor</topic><topic>Coal mines</topic><topic>Coal mining</topic><topic>Cover stress re-establishment</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Environmental Science and Engineering</topic><topic>ENVIRONMENTAL SCIENCES</topic><topic>Flow rates</topic><topic>Fractures</topic><topic>Geochemistry</topic><topic>Geology</topic><topic>Gob</topic><topic>Groundwater flow</topic><topic>Groundwater inrush rate</topic><topic>Hydrology/Water Resources</topic><topic>Original Article</topic><topic>Overburden</topic><topic>Permeability</topic><topic>Permeability of fractured rock mass</topic><topic>Porous media</topic><topic>Rocks</topic><topic>Terrestrial Pollution</topic><topic>Underground coal mining</topic><topic>Water inflow</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, W. X.</creatorcontrib><creatorcontrib>Sui, W. H.</creatorcontrib><creatorcontrib>Faybishenko, B.</creatorcontrib><creatorcontrib>Stringfellow, W. T.</creatorcontrib><creatorcontrib>Lawrence Berkeley National Lab. 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X.</au><au>Sui, W. H.</au><au>Faybishenko, B.</au><au>Stringfellow, W. T.</au><aucorp>Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Permeability variations within mining-induced fractured rock mass and its influence on groundwater inrush</atitle><jtitle>Environmental earth sciences</jtitle><stitle>Environ Earth Sci</stitle><date>2016-02-01</date><risdate>2016</risdate><volume>75</volume><issue>4</issue><spage>1</spage><pages>1-</pages><artnum>326</artnum><issn>1866-6280</issn><eissn>1866-6299</eissn><abstract>This paper is concerned with the evaluation of permeability of fractured rock mass due to the cover stress re-establishment, which is a major factor in controlling water and gas flow rate induced by mining operations in fractured rock. The case study considered in this paper is based on the results of observations of groundwater inrush and a decrease in water inflow from the fractured roof strata due to mining advancing in the Taiping Coalmine, Shandong Province, China. A conceptual model of an effective porous media was used to assess the permeability distribution in the fractured zone induced by coal mining. The cover stress re-establishment in gob fractured rock mass was evaluated using an empirical formula based on the surface subsidence. A simplified conceptual model of the fractured zone was used to evaluate the deformation of fractured zone along with the evaluation of changes in the rock permeability above the gob due to the cover stress re-establishment. These data were then used to calculate the water inflow rate into the panel. Predicted water inflow rates have been found to be in good agreement with those from monitoring data. This study improved the understanding of the mechanisms of the post-mining cover stress re-establishment on permeability change of the overburden fracture rock strata. These results can then be applied for numerical simulations of the process of overburden failure and consequent groundwater inrush due to coal mining.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s12665-015-5064-5</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | Environmental earth sciences, 2016-02, Vol.75 (4), p.1, Article 326 |
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| subjects | Biogeosciences Bulking factor Coal mines Coal mining Cover stress re-establishment Earth and Environmental Science Earth Sciences Environmental Science and Engineering ENVIRONMENTAL SCIENCES Flow rates Fractures Geochemistry Geology Gob Groundwater flow Groundwater inrush rate Hydrology/Water Resources Original Article Overburden Permeability Permeability of fractured rock mass Porous media Rocks Terrestrial Pollution Underground coal mining Water inflow |
| title | Permeability variations within mining-induced fractured rock mass and its influence on groundwater inrush |
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