为确保电站建设工地和枢纽的安全，必须对大寨沟、海子沟两流域的泥石流形成、发育和泥石流流量进行研究。
It is therefore imperative to carry out the research on the formation , growth and discharge of the debris flows in these two gullies so as to safely put into construction the hydropower station and the sites needed .
海子沟