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江垭水电站地下厂房主洞室群， 根据围岩地质条件及利于流道布置、施工方便等因素， 布置在坝址右岸， 其上覆围岩厚８０ ～１４０ ｍ ， 为浅埋式地下洞室工程。针对厂区地下水来源以层面渗水和构造渗水为主的特点， 对厂区地下水采取截、排、堵等综合措施进行处理。采取以喷锚支护为主， 刚性混凝土衬砌为辅； 系统支护为主， 局部加固处理为辅来进行厂区工程的支护设计。进行地下工程监测， 以指导地下洞室的设计和安全施工， 检验围岩长期稳定性。同时也为其他地下工程的设计积累了经验。
The main cavern group of the underground powerhouse of the Jiangya Hydropower Station is arranged on the right bank of the dam site according to the geologic conditions of the surrounding rock and the layout of the runner, and the construction is convenient. The rock cavern is 80-140 m in thickness and is a shallow underground cavern engineering. According to the characteristics of groundwater seepage and structural seepage in groundwater of factory area, the comprehensive measures such as cutting, drainage and plugging are taken for the groundwater in the factory. Take spray anchor support, reinforced concrete lining as a supplement; system support based, local reinforcement treatment supplemented by plant engineering support design. Conduct underground project monitoring to guide the design and construction of underground caverns to test the long-term stability of surrounding rock. At the same time also for other underground engineering design has accumulated experience.