为了解决常规爆破施工炸药利用率低、隧道内有害气体含量大、粉尘浓度大等问题，对重庆轨道交通五号线5107标石桥铺站—石新路站区间采用水压爆破施工技术的方法进行论述。水压爆破是利用水的不可压缩性质，能量传播损失小，炸药爆炸冲击波瞬间通过水传播到容器壁使其位移，并产生反射作用形成二次加载，加剧炮眼壁的破坏，遂使其均匀解体破碎。结合现场振速监测、洞内气体检测数据、通风时间统计，得出： 1)水压爆破施工在节能环保方面有着“两改善、一明显”的作用，主要表现在改善炸药利用率、改善隧道有害气体含量，炮眼中水的雾化作用能明显减少粉尘和强制通风时间； 2)通过对比常规爆破和水压爆破的费用，水压爆破有节约成本、控制超欠挖等优点。

The conventional blasting technology has many disadvantages, such as utilization ratio of conventional blasting explosive, large content of harmful gas in the tunnel, and large density of dust. In this paper, the waterpressure blasting method used in the construction of Shiqiaopu StationShixinlu Station section of 5107 Bid Section on No. 5 Line of Chongqing railway transit is discussed. The site vibration monitoring data, gas monitoring data and ventilation time data collected are presented. The conclusions drawn are as follows: 1) The waterpressure blasting method has many advantages, such as improving the utilization ration of explosive and reducing the harmful gas content, dust and ventilation time, in term of energy conservation and environment protection. 2) The cost of the waterpressure blasting is less than that of conventional blasting, and the overbreak/shortbreak control effect of the waterpressure blasting is higher than that of conventional blasting.