pregrouting 中文意思是什麼
pregrouting
解釋
預灌漿-
Review is made on the results of two designs for the high pressure pregrouting at the stopes of the main shaft and the auxiliary shaft in an iron mine. one design took the geological characteristics as the basis and was strictly and scientifically made. with proper construction technical measures, it brough both good technical and economical effects to the grouting engineering. the another design was made in no consideration of practice. as a result, it brought avoidable losses to the engineering. its failure cause are analyzed
評述某鐵礦主副井工作面高壓預注漿的兩種設計結果：一是以地質特點為依據，嚴格按科學設計，施工技術措施得當，給注漿施工帶來了良好的技術經濟效益；二是未從實際出發進行設計，給工程造成不應有的損失，剖析其失敗原因。 -
Pregrouting technology at surface ground for ventilation shaft sinking in liuzhuang mine
劉莊煤礦回風井井筒地面預注漿技術
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