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An innovative approach for gob‐side entry retaining in deep coal mines: A case study
Due to the complex geostress and mining conditions in the coal seam with depth of 800 m, stability of surrounding rock for gob‐side entry retaining is very difficult to achieve. In this paper, we firstly propose an innovative bolt‐grouting controlled roof‐cutting for gob‐side entry retaining (BCR‐GE...
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Published in: | Energy science & engineering 2019-12, Vol.7 (6), p.2321-2335 |
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description | Due to the complex geostress and mining conditions in the coal seam with depth of 800 m, stability of surrounding rock for gob‐side entry retaining is very difficult to achieve. In this paper, we firstly propose an innovative bolt‐grouting controlled roof‐cutting for gob‐side entry retaining (BCR‐GER) approach for deep coal mines. Secondly, a mechanical model of “surrounding rock‐supporting body” for BCR‐GER is constructed, which consists of coal wall, roadside props, and gangues in gob (the whole supporting body). Thirdly, the key parameters (ie, cutting height, cutting angle, grouting cable length, and row of roadside props) are designed. Finally, field practice was applied at the No. 31120 haulage roadway of the Suncun coal mine in China, and in situ investigations were conducted for verification. Field measurement results show that maximum convergences of roof‐to‐floor and side‐to‐side were 264 mm and 113 mm, respectively. What is more, the maximum support resistance of roadside props was reduced by approximately 58%. The deformation and failure of surrounding rock were effectively controlled, and the pressure on roadside props was greatly reduced. This research fully considers the bearing properties of gangues in gob, eliminates the secondary disasters caused by borehole blasting, and provides guidance and reference for deep surrounding rock control of the same or similar gob‐side entry.
An innovative approach of BCR‐GER for deep coal mines is proposed. Three key techniques of the BCR‐GER approach are introduced. The mechanical model of “surrounding rock‐supporting body” for BCR‐GER is developed. Four key parameters of the BCR‐GER approach are designed. Field practice verifies the effect of the BCR‐GER approach. |
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An innovative approach of BCR‐GER for deep coal mines is proposed. Three key techniques of the BCR‐GER approach are introduced. The mechanical model of “surrounding rock‐supporting body” for BCR‐GER is developed. Four key parameters of the BCR‐GER approach are designed. Field practice verifies the effect of the BCR‐GER approach.</description><identifier>ISSN: 2050-0505</identifier><identifier>EISSN: 2050-0505</identifier><identifier>DOI: 10.1002/ese3.431</identifier><language>eng</language><publisher>London: John Wiley & Sons, Inc</publisher><subject>Air leakage ; BCR‐GER approach ; Blasting ; Boreholes ; Cables ; Case depth ; Coal mines ; Coal mining ; Cutting parameters ; deep‐mining condition ; Deformation ; Deformation effects ; Disasters ; Grouting ; Haul roads ; mechanical model ; parameters optimization ; Roadsides ; Rocks ; Roofing ; Roofs ; Stress concentration</subject><ispartof>Energy science & engineering, 2019-12, Vol.7 (6), p.2321-2335</ispartof><rights>2019 The Authors. published by the Society of Chemical Industry and John Wiley & Sons Ltd.</rights><rights>2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3931-dd6e242ac3af2c4bfe8d0a5e51fca1af3750cb222a1ac0f17bb5c370fa62547a3</citedby><cites>FETCH-LOGICAL-c3931-dd6e242ac3af2c4bfe8d0a5e51fca1af3750cb222a1ac0f17bb5c370fa62547a3</cites><orcidid>0000-0001-9844-1960</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/2327532538/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/2327532538?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,11543,25733,27903,27904,36991,44569,46030,46454,74872</link.rule.ids></links><search><creatorcontrib>Fan, Deyuan</creatorcontrib><creatorcontrib>Liu, Xuesheng</creatorcontrib><creatorcontrib>Tan, Yunliang</creatorcontrib><creatorcontrib>Yan, Lei</creatorcontrib><creatorcontrib>Song, Shilin</creatorcontrib><creatorcontrib>Ning, Jianguo</creatorcontrib><title>An innovative approach for gob‐side entry retaining in deep coal mines: A case study</title><title>Energy science & engineering</title><description>Due to the complex geostress and mining conditions in the coal seam with depth of 800 m, stability of surrounding rock for gob‐side entry retaining is very difficult to achieve. In this paper, we firstly propose an innovative bolt‐grouting controlled roof‐cutting for gob‐side entry retaining (BCR‐GER) approach for deep coal mines. Secondly, a mechanical model of “surrounding rock‐supporting body” for BCR‐GER is constructed, which consists of coal wall, roadside props, and gangues in gob (the whole supporting body). Thirdly, the key parameters (ie, cutting height, cutting angle, grouting cable length, and row of roadside props) are designed. Finally, field practice was applied at the No. 31120 haulage roadway of the Suncun coal mine in China, and in situ investigations were conducted for verification. Field measurement results show that maximum convergences of roof‐to‐floor and side‐to‐side were 264 mm and 113 mm, respectively. What is more, the maximum support resistance of roadside props was reduced by approximately 58%. The deformation and failure of surrounding rock were effectively controlled, and the pressure on roadside props was greatly reduced. This research fully considers the bearing properties of gangues in gob, eliminates the secondary disasters caused by borehole blasting, and provides guidance and reference for deep surrounding rock control of the same or similar gob‐side entry.
An innovative approach of BCR‐GER for deep coal mines is proposed. Three key techniques of the BCR‐GER approach are introduced. The mechanical model of “surrounding rock‐supporting body” for BCR‐GER is developed. Four key parameters of the BCR‐GER approach are designed. Field practice verifies the effect of the BCR‐GER approach.</description><subject>Air leakage</subject><subject>BCR‐GER approach</subject><subject>Blasting</subject><subject>Boreholes</subject><subject>Cables</subject><subject>Case depth</subject><subject>Coal mines</subject><subject>Coal mining</subject><subject>Cutting parameters</subject><subject>deep‐mining condition</subject><subject>Deformation</subject><subject>Deformation effects</subject><subject>Disasters</subject><subject>Grouting</subject><subject>Haul roads</subject><subject>mechanical model</subject><subject>parameters optimization</subject><subject>Roadsides</subject><subject>Rocks</subject><subject>Roofing</subject><subject>Roofs</subject><subject>Stress concentration</subject><issn>2050-0505</issn><issn>2050-0505</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><sourceid>PIMPY</sourceid><sourceid>DOA</sourceid><recordid>eNp1kc1KazEQxw-ioHgFHyHgxs3RJHPS07orUj-gcBd-bMMkmdSUelKTU6W7-wg-o09ieivixkWYzPCb_wzzr6pjwc8E5_KcMsFZA2KnOpBc8bo8tfvjv18d5TznnItGNCMuDqrHccdC18VX7MMrMVwuU0T7xHxMbBbNx7_3HBwx6vq0Zol6DF3oZqWFOaIlsxEX7Dl0lC_YmFnMxHK_cus_1Z7HRaajr3hYPVxN7i9v6unf69vL8bS2MAJROzcg2Ui0gF7axngaOo6KlPAWBXpoFbdGSlkSy71ojVEWWu5xIFXTIhxWt1tdF3Gulyk8Y1rriEH_L8Q005j6YBekDTrhQEiwBhs7hJEF4Y03lg-hGXhZtE62WuUELyvKvZ7HVerK-lqCbBVIBcNCnW4pm2LOifz3VMH1xgS9MUEXEwpab9G3sKD1r5ye3E1gw38ChyCIoA</recordid><startdate>201912</startdate><enddate>201912</enddate><creator>Fan, Deyuan</creator><creator>Liu, Xuesheng</creator><creator>Tan, Yunliang</creator><creator>Yan, Lei</creator><creator>Song, Shilin</creator><creator>Ning, Jianguo</creator><general>John Wiley & Sons, Inc</general><general>Wiley</general><scope>24P</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KR7</scope><scope>L6V</scope><scope>L7M</scope><scope>M7S</scope><scope>PCBAR</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0001-9844-1960</orcidid></search><sort><creationdate>201912</creationdate><title>An innovative approach for gob‐side entry retaining in deep coal mines: A case study</title><author>Fan, Deyuan ; Liu, Xuesheng ; Tan, Yunliang ; Yan, Lei ; Song, Shilin ; Ning, Jianguo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3931-dd6e242ac3af2c4bfe8d0a5e51fca1af3750cb222a1ac0f17bb5c370fa62547a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Air leakage</topic><topic>BCR‐GER approach</topic><topic>Blasting</topic><topic>Boreholes</topic><topic>Cables</topic><topic>Case depth</topic><topic>Coal mines</topic><topic>Coal mining</topic><topic>Cutting parameters</topic><topic>deep‐mining condition</topic><topic>Deformation</topic><topic>Deformation effects</topic><topic>Disasters</topic><topic>Grouting</topic><topic>Haul roads</topic><topic>mechanical model</topic><topic>parameters optimization</topic><topic>Roadsides</topic><topic>Rocks</topic><topic>Roofing</topic><topic>Roofs</topic><topic>Stress concentration</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fan, Deyuan</creatorcontrib><creatorcontrib>Liu, Xuesheng</creatorcontrib><creatorcontrib>Tan, Yunliang</creatorcontrib><creatorcontrib>Yan, Lei</creatorcontrib><creatorcontrib>Song, Shilin</creatorcontrib><creatorcontrib>Ning, Jianguo</creatorcontrib><collection>Wiley Online Library Open Access</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Civil Engineering Abstracts</collection><collection>ProQuest Engineering Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Engineering Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>Publicly Available Content (ProQuest)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering collection</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Energy science & engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fan, Deyuan</au><au>Liu, Xuesheng</au><au>Tan, Yunliang</au><au>Yan, Lei</au><au>Song, Shilin</au><au>Ning, Jianguo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An innovative approach for gob‐side entry retaining in deep coal mines: A case study</atitle><jtitle>Energy science & engineering</jtitle><date>2019-12</date><risdate>2019</risdate><volume>7</volume><issue>6</issue><spage>2321</spage><epage>2335</epage><pages>2321-2335</pages><issn>2050-0505</issn><eissn>2050-0505</eissn><abstract>Due to the complex geostress and mining conditions in the coal seam with depth of 800 m, stability of surrounding rock for gob‐side entry retaining is very difficult to achieve. In this paper, we firstly propose an innovative bolt‐grouting controlled roof‐cutting for gob‐side entry retaining (BCR‐GER) approach for deep coal mines. Secondly, a mechanical model of “surrounding rock‐supporting body” for BCR‐GER is constructed, which consists of coal wall, roadside props, and gangues in gob (the whole supporting body). Thirdly, the key parameters (ie, cutting height, cutting angle, grouting cable length, and row of roadside props) are designed. Finally, field practice was applied at the No. 31120 haulage roadway of the Suncun coal mine in China, and in situ investigations were conducted for verification. Field measurement results show that maximum convergences of roof‐to‐floor and side‐to‐side were 264 mm and 113 mm, respectively. What is more, the maximum support resistance of roadside props was reduced by approximately 58%. The deformation and failure of surrounding rock were effectively controlled, and the pressure on roadside props was greatly reduced. This research fully considers the bearing properties of gangues in gob, eliminates the secondary disasters caused by borehole blasting, and provides guidance and reference for deep surrounding rock control of the same or similar gob‐side entry.
An innovative approach of BCR‐GER for deep coal mines is proposed. Three key techniques of the BCR‐GER approach are introduced. The mechanical model of “surrounding rock‐supporting body” for BCR‐GER is developed. Four key parameters of the BCR‐GER approach are designed. Field practice verifies the effect of the BCR‐GER approach.</abstract><cop>London</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/ese3.431</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0001-9844-1960</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Air leakage BCR‐GER approach Blasting Boreholes Cables Case depth Coal mines Coal mining Cutting parameters deep‐mining condition Deformation Deformation effects Disasters Grouting Haul roads mechanical model parameters optimization Roadsides Rocks Roofing Roofs Stress concentration |
title | An innovative approach for gob‐side entry retaining in deep coal mines: A case study |
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