Application of a new hole-sealing reagent in gas pressure determination of water-bearing coal seam
Traditional hole-sealing materials have some disadvantages such as long concretion time, poor airtightness caused by shrinkage and xerochasy and so on under the condition that drilling hole of water-bearing coal seam passes fissure zone. A new type of hole-sealing reagent was proposed on the basis o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Industry and Mine Automation
2014-11-01
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| Series: | Gong-kuang zidonghua |
| Subjects: | |
| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2014.11.022 |
| Summary: | Traditional hole-sealing materials have some disadvantages such as long concretion time, poor airtightness caused by shrinkage and xerochasy and so on under the condition that drilling hole of water-bearing coal seam passes fissure zone. A new type of hole-sealing reagent was proposed on the basis of traditional grout and applied in high pressure grouting hole-sealing process in a coal mine. Application result shows that concretion time of the new hole-sealing reagent is 12 h, and the new hole-sealing reagent has more reliable measurement result of gas pressure of coal seam than traditional hole-sealing material as well as better effect of water stem. |
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| ISSN: | 1671-251X |