DOI: 10.11799/ce201704009
Composite shaft sinking construction technologycrossing quicksand layer
ZHU Nan-jing
Abstract：In order to solve the problem of shaft construction in Northern Shaanxi loose layer,composite shaft sinking method is proposed which combines dewatering with open caisson,and the quicksand-crossing composite shaft sinking construction technology was introduced based on the construction practice in Xiaojihan Coal Mine.Through calculation,the dewatering amount of well point construction and well points number were determined,and the outer shaft dewatering was completed after the tube well construction;the foot edge construction,earth cutting,observation-control,and concreting,the shaft sinking was finished,realizing the safe crossing of loose aquifer for the central air return vertical shaft in Xiaojihan Coal Mine,saving 2 month for the overall construction period,and 5 million yuan for the project cost.The composite shaft sinking method is applicable to fast and efficient crossing of loose aquifer in shaft construction,which provides references for similar mine shaft construction.
Keywords：composite shaft sinkingwell point dewateringshaft sinkingquicksand layer crossingshaft construction
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 25-27 )