摘要
在旧区复采过程中,选用单体液压支柱与π型钢梁配套支护回收阶段煤柱,进行老旧、残区回采,极大地提高了矿井煤炭资源回收率,使已经废弃的资源得已再回收。
In Mining old mine section, the stage pillars are recovered by using single hydraulic prop and π type steel girder support. The old and remain sections are mined. The discard resources are recovered again.
出处
《煤炭技术》
CAS
2006年第4期56-58,共3页
Coal Technology
关键词
单体液压支柱
Π型钢梁
放顶煤
煤柱
旧区复采
single hydraulic prop
π type steel girder
caving coal
pillar
mining old mine section
