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构皮滩电站右岸导流洞穿越坝址最复杂、规模最大的w6号岩溶系统,帷幕灌浆施工先要通过电磁波CT探测孔进行CT探测,根据探测结果,先对探测到的溶洞进行处理,然后在布置的帷幕灌浆沿轴线全线进行帷幕灌浆处理。重点阐述了CT探测、溶洞封堵、帷幕灌浆施工等施工关键工序、工艺流程、特殊情况的处理等具体施工方法。
The right bank diversion tunnel of Goupitan Hydropower Station passes through the most complex and largest w6 karst system in the dam site. Curtain curtain grouting should first be detected by CT scanning holes of the electromagnetic wave. According to the detection results, the caving cave is processed first and then Curtain curtain grouting along the entire line of the curtain grouting treatment. The key construction procedures, such as CT detection, cave closure and curtain grouting construction, as well as the process flow and handling of special situations, are mainly elaborated.