01160nam a2200253 c 4500001001300000005001500013007000300028008004100031040001100072052003700083245014200120300002200262545006500284545006500349545006500414653010100479700005300580700004800633700004800681773012400729900001800853900001800871900001700889KSI00067851920081114094547ta080707s2002    ulk           000   kor    a01100101a572.2705b대495ㅎc20(1)-20(4)00a발파와 관련된 암반분류에 대한 고찰 =xSuggestions for rock classification in blasting /d선우춘,e신희순,e류창하  ap. 35-50 ;c26 cm  a선우춘, 한국지질자원연구원 탐사개발연구부  a신희순, 한국지질자원연구원 탐사개발연구부  a류창하, 한국지질자원연구원 탐사개발연구부  a암반분류a발파암a리핑암a발파지수a굴착난이도aRock classificationaBlasting1 a선우춘,g鮮于椿,d1955-0KAC2013295614aut1 a신희순,g申僖淳,d1952-0KAC2017003771 a류창하,g柳暢夏,d1954-0KAC2016369730 t화약발파.d大韓火藥技術學會.g20권 1호(2002년 3월), p. 35-50q20:1<35w(011001)KSE199509191,x1229-907310aSunwoo, Choon10aShin, Heesoon10aRyu, Changha