| Autor: |
Cunjin Lu1, Jinpeng Xu1 xu_jinpeng@126.com, Tongming Wang1 |
| Předmět: |
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| Zdroj: |
Fresenius Environmental Bulletin. May2022, Vol. 31 Issue 5, p5176-5184. 9p. |
| Abstrakt: |
Safety mining technology is an important part of traditional mines to adapt to green and high-quality development. In the production process, the coal face crossing the collapse column is a typical important hazard, which may cause accidents such as collapse column activated water conduction. Through UDEC and FLAC3D numerical simulation, this paper compares the roof and floor overlying rock damage and hydraulic seepage caused by mining before and after the collapse column grouting, and provides a basis for the treatment and early warning of the activated water conduction hazard during the collapse column mining process. The results show that, compared with the non-grouting, grouting treatment measures can effectively reduce the risk of collapse column activated water conduction when the coal face passes through the collapse column. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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