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| Fast plugging technology of drift diameter drilling dynamic pressure water |
| Zhang Long, Ma Guoxue |
| Shennan’ao Coking Coal Corporation Ltd., Shanxi Xiangning Coking Coal Group, Xiangning 042100, China |
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Abstract The advanced mining drilling in Shennan’ao roadway was taken as example, watering treatment without prediction under no preassembling drilling pipe was introduced. Pressure relief valve was adopted to adjust water inflow under dynamic pressure water condition and control the emission of mixed liquor, the feature of rapid expansion solidification of organic polymer shutoff material meeting water was used to realize rapid water plugging.
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