Coal Engineering ›› 2019, Vol. 51 ›› Issue (10): 67-70.doi: 10.11799/ce20191016
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Abstract: In order to realize the rapid and safe coal uncovering under the complicated geological conditions of the roadway tunneling fault group and the coal seam group, the grouting/solidification/cutting comprehensive anti-burst technology is proposed based on the prevention mechanism of coal and gas outburst and the supporting mechanism of broken surrounding rock. The technical test was carried out with the construction of Wulunshan Mine Transportation Roadway as the engineering background. Firstly, through the pipe shed + grouting support technology, the surrounding rock of the excavation roadway is controlled ahead of time to prevent the roof from inducing the protrusion. Secondly, the grouting and solidification technology was applied to grout solidify the full-section coal and rock mass of the excavation roadway, improving The structure of coal and rock mass reduces the K1 value of the prominent index. Finally, the gas isolated from the fault group was separated from the coal seam group by the grouting and solidification, and the grouting/solidification/cutting comprehensive anti-burst technology system is formed. This technology not only prevents the outburst, but also strengthens the support to ensure safe and rapid excavation of outburst coal seams group in the fault group.
CLC Number:
TD712
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URL: http://www.coale.com.cn/EN/10.11799/ce20191016
http://www.coale.com.cn/EN/Y2019/V51/I10/67