Repair Technology of Gateway Retained Along Goaf in Outburst Seam Mining Face
Abstract：In order to solve the sidewall cracking of the gateway retained along the goaf, roof subsidence value and the floor heave value problems in the two gateways of No. 103 coal mining face in Wolonghu Mine, with an application of a theoretical analysis and site practices combined method, the technical measures including the full section shield support of the gateway, sidewall shotereting reinforcement df the gateway retained along goal, H type steel supports set in the roof broken section, floor bolting and others were provided. The results showed that at 0 - 60 m section between No. 102 coal mining face and No. 104 coal mining face, the deformation value of the two sidewalls in the gateway was 500 mm in average and the deformation of the gateway surrounding rock was serious. At the section of 60 - 150 m, the deformation value of the two sidewalls in the gateway was 120 mm in average. The deformation of the gateway surrounding rock was moder- ate. The two gateways could meet the site production requirements during the mining operation period of the coal mining face.
Keywords：outburst seamgateway retained along goalgateway repair technologysurrounding rock deformation
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 49-51,54 )