Abstract: The duplex pipe deep hole grouting technology is adopted in the mining alleyway construction on HuarunJiali section at Qingnian Street in Shenyang city. In the end, the alleyway successfully crosses the street under complex stratum, the ground is reinforced and the safety of the ground traffic and underground power line is guaranteed. Good effect is achieved.

Key words: complex stratum, duplex pipe grouting technology, mining alleyway