Abstract：The deep hole electric blast excavating method was adopted in coal bed of the Jiazhuqing high-gas tunnel，no disaster accidents occurred and the excellent social and economic benefits had been obtained. Through the selection of blasting technique in the excavating works，the safety measures for constructing tun-nel in high-gas coal bed arc explored in this paper.
李开言. 家竹箐高瓦斯隧道煤层深孔爆破技术[J]. 铁道工程学报, 2002, 19(2): 38-41.
LI Kai-yan. DEEP HOLE BLASTING TECHNIQUE IN COAL BED OF JIAZHUQING HIGH- GAS TUNNEL. Journal of Railway Engineering Society, 2002, 19(2): 38-41.
2002, Vol. 19 
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