| Autor: |
QIN Zhongcheng, LIU Lining, QU Hengzhe, NIE Wang |
| Jazyk: |
čínština |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Meikuang Anquan, Vol 51, Iss 10, Pp 236-242 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1003-496X |
| DOI: |
10.13347/j.cnki.mkaq.2020.10.038 |
| Popis: |
To solve the problems such as the poor effect of water control technology for “high limit mining” and the serious water disaster of the aquifer of Luohe Formation in the panel mining of the second stage in a coal mine, combined with the fine exploration data of aquifer, the mode of “progressive seepage” water filling in the large thick semi-permeable aquifer of the roof is proposed, which is demonstrated by the mathematical model establishment, numerical simulation and field measurement. The field tests show that when the roof fracture zone spreads to the aquifer of Luohe Formation, based on the previous analytical method under the condition of overall drainage of aquifer, it is predicted that the water inflow of working face can reach nearly 4 000 m3/h. However, under the guidance of “progressive seepage” water filling mode, the water inflow of working face No.304 and No.206 during stoping is respectively 302 m3/h and 200 m3/h. The results fully verify that the drainage method of the coal mine is different from the traditional “progressive” water level drainage mod. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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