Discussion on Timely Support of Hydraulic Support in Remining Wells
For the mining process in the old kiln empty lane and the old kiln security coal pillar in the two-dimensional stress by the shear force,often appear sheet gang,leakage of the top and other phenomena,now on the ZF6600/17.5/28 hydraulic bracket in time to support and retractable beams and gangplates over the top of the control,the analysis shows that the coal mining machine retractable beams all out,open the gangplates,effective control of the sheet gang angle of up to about 30 °,that is,the sloping face and the working face,the maximum angle of about 30 °,the coal mining machine retractable beams are all out,open the gangplate,effectively control the sheet gang angle.That is,when the inclination angle between the slanting surface of the sheet gang and the coal wall of the working face is＜30°,it can control the gangs and control the top,which can solve the relationship between the position of the telescopic beam and the supporting position of the shield plate and the state of the shielding gangs when the hydraulic bracket of the remining wells is supported in time,and ensure the safety of the remining wells and improve the quality and efficiency effectively.
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