The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Bookmark and Share
Effect of Full-mechanized Caving on Deformation of Surrounding Rock of Driftway in Low Stress Zone
Pages: 88-90
Year: Issue:  1
Journal: Safety in Coal Mines

Keyword:  厚煤层综放开采巷道松动圈;
Abstract: 针对义马杨村煤矿底分层综放工作面D11023回风平巷处于低应力区的条件,在工作面前方回风平巷布置观测站,采用多点位移计和超声波无损检测分析仪,系统地观测了采动期间巷道围岩变形量大小、变形速度,以及松动圈范围.结果表明:回风平巷采用内错式布置时,采动影响期间巷道围岩变形量200~350 mm,该值在刚性梯形支架允许变形范围之内.采动影响区以外巷道松动圈为2.9 m,采动影响区内巷道围岩松动圈范围>3.8 m.
Related Articles
No related articles found