Research On The Tunnel Supporting And Propriate Coal Wedre Preserving Under The Provide Of The Upper Plate Of Qiling Coal Mine

Nowadays, the coal mines in our country are remaining in a search stage to tunnel supporting and preserving the size of the coal wedge, are still wondering about all kinds of the technique parameter. These have made a huge waste for the resource , and the same time influence the digging replace of the cool mines. The author has built mechanical model according to spot survey,investigation,sampling, rock mechanics experiment,analyzing stopping ansys and use many methods to study the supporting form and tunnel of the hard roof tunnel parameter and proper preserving to the size of the coal wedge, make the following achievement:1. No use of the supporting to the tunnel and ark according to model building and calculation.2. As the tunnel wall is asfable rock strafum ,the supporting parameter according to finite element calculation is: anchor arm separation: 1m,array pitch:1m,using resin anchor arm, diameter: φ= 16mm and the length is 1.8m. Just because the long usage of the tunnel, we must use metallic net...