CAJ | 학술논문

古书院矿9号煤的煤体瓦斯含量大，工作面又用U型通风，回采中的采空区及邻近己采区中积存的大量瓦斯在通风负压下涌向工作面上隅角和回风巷，仅靠U型通风稀释瓦斯已不能解决上隅角瓦斯超限问题。后采用本煤层预抽、走向钻孔抽放、临近层抽采等综合防治技术，能很好解决工作面上隅角瓦斯超限问题、实现工作面的高产高效安全生产。
고서원광9호매적매체와사함량대，공작면우용U형통풍，회채중적채공구급린근기채구중적존적대량와사재통풍부압하용향공작면상우각화회풍항，부고U형통풍희석와사이불능해결상우각와사초한문제。후채용본매층예추、주향찬공추방、림근층추채등종합방치기술，능흔호해결공작면상우각와사초한문제、실현공작면적고산고효안전생산。
No.9 coal seam in Gushuyuan Mine has high gas content. Since U-typed ventilation is used on the working face, a large amount of gas, accumulated in mined-out areas and adjacent mined areas, rushes to upper corners and air-retain gateways. Gas exceeding limit in the upper corners could not solved by U-typed ventilation alone. Comprehensive gas control with pre-drainage in the seam, gas drainage along boreholes, and gas drainage in adjacent seams could solve the gas exceeding limit and realize efficient production on the working face.