董宏德

Karst area drilling cast-in-place pile structure and construction method

牛奔, 崔健, 孙学军, 2014 .

One kind of bored piles in karst area structure and construction method

牛奔, 崔健, 孙学军, 2014 .

Cast-in-situ bored pile structure for karst area

牛奔, 崔健, 孙学军, 2014 .