Discussion on Shaft Lining Structure Type of China Freezing Shaft Sinking
ZHANG Wen
Abstract：Freezing shaft sinking technology has developed rapidly since twenty‐first century in China , many coal shafts’ freezing depth exceeded 600 m ,a few shafts’ freezing depth exceeded 700 m ,maxi‐mum freezing depth was 950 m ,maximum diameter of freezing shaft was 10.5 m. This requires higher to shaft lining structure. However ,in the design of freezing shaft lining ,composite shaft lining struc‐ture type of double layers concrete with plastic interlayer is still adopted ,this shaft lining structure type was popularized and applied in 30 years ago. Although high‐grade and high‐strength concrete is used ,the shaft lining is still too thicker and difficult to guarantee the quality of concrete. For this rea‐son ,other structure types were used ,but did not work. This review summarizes the developing course of shaft lining structure type and experience of shaft lining design at home and abroad ,and suggests that segmentation structure type must be adopted in the design of freezing shaft lining at present , namely ,while building shallow shaft lining ,high strength concrete should be used ,and composite shaft lining of double layers concrete with plastic interlayer should be adopted yet ;while building deep shaft lining ,higher strength concrete and quality assurance composite shaft lining of cast iron tubbing con‐crete or steel plate cylinder concrete should be used. And composite shaft lining of steel plate cylinder concrete must be the first choice ,this is a conforming to the actual situations of our country and rea‐sonably practicable technical solution.
Keywords：deep shaft sinking with freezing technologyshaft lining structure typecomposite shaft lin-ing of double layers concrete with plastic interlayercomposite shaft lining of cast iron tubbing con-cretecomposite shaft lining of steel plate cylinder concrete
Publication Date：2015-11-16
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 7-12,6 )