溪洛渡水电站左岸进水口高边坡开挖爆破技术

Blasting Technology of High Slop Excavation in the Left Bank Station Inlet in Xiluodu Hydropower Station

溪洛渡水电站为世界第三大巨型水电站,电站装机容量12 600MW。左岸电站进水口区域谷坡陡峻、地形复杂、施工难度大、技术要求高,开挖边坡高达170m,控制开挖爆破质量尤为重要。根据左岸电站进水口开挖爆破施工特点及施工要求,制定了相应的开挖爆破质量标准,采取了一系列质量控制措施,使开挖爆破质量得到了有效的控制,既保证了开挖高边坡的稳定,又保证了开挖坡面的质量。

Xiluodu Hydropower Station is the third largest hydropower station in the world,its installed capacity is 12 600MW.The inlet area of the left bank hydropower station has some characteristics of steep slope and complicated terrain,which makes construction difficult and technique requirement high.The excavated slope is 170m in height,so it is important for controlling blasting quality.Based on construction characteristics of excavation and blasting in the inlet area,the relative quality control standard on excavation and blasting is established.By adopting a series of quality controlling measures,the excavation and blasting quality is controlled effectively from two aspects of stability of the high slope and the quality of the excavated slope surface.