Construction Technique Optimized to Improve Construction Schedule of Mine Large Cross Section Rock Roadway with Drilling-Blasting Heading and Square U Steel Support
XU Bin
Abstract：A mine rail roadway in south two 13-1 top mining block of South Area in Guqiao Mine was a mine roadway passing through strata ,a heading cross section was 24.5m2 ,a designed length of the roadway was 2 753.2m and the depth of the roadway was 730m.The construction of the roadway was conducted along a floor of No.13-1 seam and a drilling and blasting method was applied to the road-way heading.The surrounding rock of the mine roadway was a sandstone and sandy mudstone mainly and was supported with 29U steel square support.At an initial construction period ,an average month heading rate of the mine roadway was about 90m and the rate was irrational.With the construction technique optimized and the construction management enhanced ,the construction schedule was spee-ded up ,the average month heading rate of a medium and late construction period of the mine roadway was improved about 110m and a max month rate was 118m.With no accident occurred in safety and excellent engineering quality ,a rapid construction with a safety and excellent quality of the mine road-w ay w as realized.
Keywords：large cross section rock roadwayconstruction techniquedrilling and blastingparallel o-perationssquare U steel support setting
Publication Date：2014-04-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 17-20 )