Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity
To ensure the sealing effect of gas extraction borehole in underground coal mine and improve the concentration of gas extraction, a kind of high-flow sealing material which can be injected into the microcracks around borehole was developed. The ultrafine cement as the base material, with water-reduc...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6645425 |
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| author | Xin Guo Sheng Xue Chunshan Zheng Yaobin Li |
| author_facet | Xin Guo Sheng Xue Chunshan Zheng Yaobin Li |
| author_sort | Xin Guo |
| collection | DOAJ |
| description | To ensure the sealing effect of gas extraction borehole in underground coal mine and improve the concentration of gas extraction, a kind of high-flow sealing material which can be injected into the microcracks around borehole was developed. The ultrafine cement as the base material, with water-reducing agent, expansion agent, retarder, the material, and water combined stir, will form a kind of colloid with high fluidity and slightly expansibility. This paper analyzes the differences between the new high-fluidity sealing material and ordinary cement materials in expansion performance, compressive strength, and sealing performance. Scanning electron microscope and mercury intrusion method were used to analyze the differences in microscopic morphology and pore structure of these two materials. The experimental results show that the new high-fluidity sealing material has an excellent fluidity of 295.5 mm with an expansion rate of 60 d being 1.562%. The new high-fluidity sealing material is convenient for grouting with strong material permeability and superior sealing performance. Field test results show that the effect of the new high-fluidity sealing material is better than the ordinary cement materials. The average drainage concentration and flux during the drainage period were 59.07% and 0.243 m3/min, respectively, which showed that the drainage efficiency was significantly improved. This novel sealing material is of great significance for improving the efficiency of drilling and drainage. |
| format | Article |
| id | doaj-art-d2815f96cde3450283ac30d94d2a1ef7 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-d2815f96cde3450283ac30d94d2a1ef72025-02-03T01:04:25ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/66454256645425Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High FluidityXin Guo0Sheng Xue1Chunshan Zheng2Yaobin Li3School of Safety Science and Engineering, Anhui University of Science & Technology, Huainan, Anhui 232001, ChinaSchool of Safety Science and Engineering, Anhui University of Science & Technology, Huainan, Anhui 232001, ChinaSchool of Safety Science and Engineering, Anhui University of Science & Technology, Huainan, Anhui 232001, ChinaSchool of Safety Science and Engineering, Anhui University of Science & Technology, Huainan, Anhui 232001, ChinaTo ensure the sealing effect of gas extraction borehole in underground coal mine and improve the concentration of gas extraction, a kind of high-flow sealing material which can be injected into the microcracks around borehole was developed. The ultrafine cement as the base material, with water-reducing agent, expansion agent, retarder, the material, and water combined stir, will form a kind of colloid with high fluidity and slightly expansibility. This paper analyzes the differences between the new high-fluidity sealing material and ordinary cement materials in expansion performance, compressive strength, and sealing performance. Scanning electron microscope and mercury intrusion method were used to analyze the differences in microscopic morphology and pore structure of these two materials. The experimental results show that the new high-fluidity sealing material has an excellent fluidity of 295.5 mm with an expansion rate of 60 d being 1.562%. The new high-fluidity sealing material is convenient for grouting with strong material permeability and superior sealing performance. Field test results show that the effect of the new high-fluidity sealing material is better than the ordinary cement materials. The average drainage concentration and flux during the drainage period were 59.07% and 0.243 m3/min, respectively, which showed that the drainage efficiency was significantly improved. This novel sealing material is of great significance for improving the efficiency of drilling and drainage.http://dx.doi.org/10.1155/2021/6645425 |
| spellingShingle | Xin Guo Sheng Xue Chunshan Zheng Yaobin Li Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity Advances in Materials Science and Engineering |
| title | Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity |
| title_full | Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity |
| title_fullStr | Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity |
| title_full_unstemmed | Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity |
| title_short | Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity |
| title_sort | experimental research on performance of new gas drainage borehole sealing material with high fluidity |
| url | http://dx.doi.org/10.1155/2021/6645425 |
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