Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine
The backfilling mining method can effectively solve the environmental and safety problems caused by mining. It is the key technology to realize green mining. Scientific development has accelerated the pace of research on the rational utilization of mine solid waste and improved the research level of...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/6/721 |
| _version_ | 1797484110634024960 |
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| author | Fengbin Chen Jiguang Liu Xiaowei Zhang Jinxing Wang Huazhe Jiao Jianxin Yu |
| author_facet | Fengbin Chen Jiguang Liu Xiaowei Zhang Jinxing Wang Huazhe Jiao Jianxin Yu |
| author_sort | Fengbin Chen |
| collection | DOAJ |
| description | The backfilling mining method can effectively solve the environmental and safety problems caused by mining. It is the key technology to realize green mining. Scientific development has accelerated the pace of research on the rational utilization of mine solid waste and improved the research level of backfilling technology. The development history of the backfilling mining method is introduced in the present paper, and it is determined that roof-contacting backfilling is the key technology of mine-solid-waste backfilling mining. This paper introduces three calculation methods of similar roof-contacted backfilling rates. In this paper, the relationship between the characteristics of backfilling slurry made from solid waste from mines and the roof-contacted backfilling rate is systematically analyzed, such as the flow law in stope (gravity gradient), bleeding shrinkage, and natural sedimentation of backfilling slurry. It is pointed out that the characteristics of the stope, such as washing-pipe water, water for the leading way, filling pipeline, and shape of the backfilling stope, are closely related to the roof-contacted backfilling rate. The influential relationship between objective factors, such as human factors, limited auxiliary leveling measures, and backfilling “one-time operation” in the backfilling process, and high-efficiency top filling are considered, and a schematic diagram of the influencing top-filling rate and structure is drawn. At the same time, this paper summarizes the improvement measures of roof connection from three aspects. These include the use of expansive non-shrinkable materials, forced roof-contacted technology, and strengthening management level. It is pointed out that the roof-contacted filling technology is still facing severe challenges, and the research on the backfilling connection technology needs to be strengthened. |
| first_indexed | 2024-03-09T22:57:47Z |
| format | Article |
| id | doaj.art-1a5ffa3cc0e74772a57e2a1af25efeac |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T22:57:47Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-1a5ffa3cc0e74772a57e2a1af25efeac2023-11-23T18:06:42ZengMDPI AGMinerals2075-163X2022-06-0112672110.3390/min12060721Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal MineFengbin Chen0Jiguang Liu1Xiaowei Zhang2Jinxing Wang3Huazhe Jiao4Jianxin Yu5School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaJiaozuo Qianye New Material Co., Ltd., Jiaozuo 454150, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaThe backfilling mining method can effectively solve the environmental and safety problems caused by mining. It is the key technology to realize green mining. Scientific development has accelerated the pace of research on the rational utilization of mine solid waste and improved the research level of backfilling technology. The development history of the backfilling mining method is introduced in the present paper, and it is determined that roof-contacting backfilling is the key technology of mine-solid-waste backfilling mining. This paper introduces three calculation methods of similar roof-contacted backfilling rates. In this paper, the relationship between the characteristics of backfilling slurry made from solid waste from mines and the roof-contacted backfilling rate is systematically analyzed, such as the flow law in stope (gravity gradient), bleeding shrinkage, and natural sedimentation of backfilling slurry. It is pointed out that the characteristics of the stope, such as washing-pipe water, water for the leading way, filling pipeline, and shape of the backfilling stope, are closely related to the roof-contacted backfilling rate. The influential relationship between objective factors, such as human factors, limited auxiliary leveling measures, and backfilling “one-time operation” in the backfilling process, and high-efficiency top filling are considered, and a schematic diagram of the influencing top-filling rate and structure is drawn. At the same time, this paper summarizes the improvement measures of roof connection from three aspects. These include the use of expansive non-shrinkable materials, forced roof-contacted technology, and strengthening management level. It is pointed out that the roof-contacted filling technology is still facing severe challenges, and the research on the backfilling connection technology needs to be strengthened.https://www.mdpi.com/2075-163X/12/6/721solid-waste fillingroof-contacted rateinfluencing factors of roof connectionregulation and improvement of roof-connection measures |
| spellingShingle | Fengbin Chen Jiguang Liu Xiaowei Zhang Jinxing Wang Huazhe Jiao Jianxin Yu Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine Minerals solid-waste filling roof-contacted rate influencing factors of roof connection regulation and improvement of roof-connection measures |
| title | Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine |
| title_full | Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine |
| title_fullStr | Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine |
| title_full_unstemmed | Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine |
| title_short | Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine |
| title_sort | review on the art of roof contacting in cemented waste backfill technology in a metal mine |
| topic | solid-waste filling roof-contacted rate influencing factors of roof connection regulation and improvement of roof-connection measures |
| url | https://www.mdpi.com/2075-163X/12/6/721 |
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