Construction technology of freezing auxiliary inclined shaft parallel excavation operation in Shengfu Mine
YAO Mingjun
LIU Shuan
Abstract：In order to solve the problems of slow excavation speed and easy water crossing outside and in between the walls of a deep and long freezing inclined shaft,a new construction technology of exca-vation and discharge of refuse,outer shaft wall construction and inner shaft wall construction parallel excavation operation were adopted in the frozen auxiliary inclined shaft construction in Shengfu Mine on the basis of the application of full section excavation construction technology,walking and trestle formwork jumbo construction technology.By combining the technology process,process time and cy-cle operation of the three major construction links,a reasonable regular operation cycle diagram was formulated to form a parallel and unified comprehensive operation mode,which solved the problem of mutual interference among the three major links of freezing inclined shaft excavation construction.The actual average excavation speed of 1 031 m undercutting freezing section was 50.8 m/month,and the maximum monthly completion speed was 102.4 m/month,which steadily improved the construc-tion speed and shaft wall construction quality of freezing inclined shaft,and could provide reference for the excavation support of deep and long freezing inclined shaft.
Keywords：freezing auxiliary inclined shaftparallel excavation operationregular operation cycle dia-gramshaft construction completion speed
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 21-25 )