%0 Journal Article %T AdvancesinDrillingInsteadofTrenchingTechnology %A ZHAO %A Hongbo* %A HE %A Yuanxin %A and %A SONG %A Dianlan %J µØÖÊѧ±¨ %P 1415-1416 %D 2015 %U http://www.geojournals.cn/dzxb/ch/reader/view_abstract.aspx?file_no=201504029&flag=1