应用反井钻机开挖导井可达到快速安全的效果。
Application of inverse well drill will permit quick and safe excavation of pilot shaft.
水电工程竖井特别是高竖井开挖，主要难点体现在竖井导井开挖的速度上。
The excavation speed of pilot shaft is one of the key difficulties for the excavation of shaft, high ones in special, of hydropower works.
在闸门井导井被岩体完全封堵的情况下，为确保后期刷帮及衬砌安全，采用锚杆和砼结合对闸门井进行锁口。
In the case that the pilot bore of the lock gate shaft was fully blocked by the rock mass, anchors have been combined with concrete to ensure the safety of subsequent side clearing and lining.
蒲石河抽水蓄能电站引水系统中的竖井开挖，拟采用反井钻机进行导井开挖，人工手风钻钻孔扩挖的方式施工。
The sequence of excavation for the shaft of diversion system at Pushihe storage power station is to excavate the pioneer well used by back well boring machine, then by hand air drill to expand it.
含水层的导水系数、释水系数和弱透水层的渗透系数、厚度是影响井涌水量的两大重要因素。
The main factors affecting the well yield are the transmissivity and water yield coefficient of the aquifer as well as the permeability coefficient and thickness of the leaky layer.
四川久大（集团）公司长山盐矿在卤井修治中，采用自由式开窗、导斜开窗两种工艺处理卤井事故，经过多次卤井修治开窗侧钻技术的应用，从而取得了一定的成绩。
The Changshan Salt Mine adopted tech nologies of free and inclined style windows opening for brine well repair. It is succeed to use side drilling with windows opening for brine well repair.
对会理川- 18井的分析表明，对于中远场井水位潮汐异常往往是含水层导水系数的变化。
Huili Sichuan-18 well's analysis showed that the tidal anomaly well water level located in the far-field and is often induced by aquifer transmissivity changes.
1996年任楼煤矿首采面曾因隐伏导水陷落柱突水，引发淹井灾害，造成3.5亿元的重大经济损失。
Because of water outburst by hidden conducting Karst collapse column at the mining area of Renlou coal mine, the flood was caused in 1996, which causes losses up to 3.5 hundred million yuan.
1996年任楼煤矿首采面曾因隐伏导水陷落柱突水，引发淹井灾害，造成3.5亿元的重大经济损失。
Because of water outburst by hidden conducting Karst collapse column at the mining area of Renlou coal mine, the flood was caused in 1996, which causes losses up to 3.5 hundred million yuan.
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