In the 20 years, the matter of gate dam construction on deep and thick overburden ofter appears, especially in the southwest regions with rich hydro-energy resources .

• 近20余年来,常常遇到在河谷中深厚覆盖层上修建闸坝的问题,尤其在我国水能资源丰富的西南地区,这个问题格外突出。