Application of High Pressure Jet-Grouted Pile and Steel Pipe Combined Arch in Constructing Inclined Shaft in Water-Bearing Sand Layer
CHEN Hua-sen
SONG Shu-yi
Abstract：Constructing inclined shaft in water-bearing sand layer ,the safety incidents of water gush‐ing ,sand boil ,collapse ,etc ,easily occur .In the paper ,we studied the technology of high pressure jet-grouted pile and steel pipe combined arch ,and introduced its technological principle .Though nu‐merical computation ,we analyzed the laws of surrounding rock deformation and stress variation re‐spectively under the supporting technology with high pressure jet-grouted pile and steel pipe combined arch or without this technology .The results show that the technology of high pressure jet-grouted pile and steel pipe combined arch can effectively control the deformation and failure of surrounding rock ,and obtain a better supporting effect .The ventilating shaft safely and smoothly passed the wa‐ter-bearing sand layer by using this technology in Weiqiang Coal Mine ,and we got the expected re‐sults .The technology can be widely applied .
Keywords：jet-grouted pilecombined archinclined shaftwater-bearing sand layernumerical simu-lation
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 21-25 )