Method for inclined normally closed stoping of too old roadway under complicated conditions

Abstract

The invention relates to a method for inclined normally closed stoping of a too old roadway under the complicated condition. The method is characterized by comprising the following steps of (1) a early stage preparation work step and (2) a later-stage construction step. The method has the advantages that under the complicated conditions, the statistic analysis is performed on the old roadway layerposition condition, the sealing condition in the old roadway, the slurry condition and the old material condition in the inclined long-wall too old roadway stoping period; potential safety hazards inaspects of layer position regulation, too old roadway technical schemes, fireproof and fire extinguishing measures, electromechanical device state control, lifting transportation management, water proofing and water discharge and the like in the working face stoping process are investigated in detail, so that the effective technical measures are made in a targeted way; and the working face reaches the safe and efficient stoping goal. The equipment fault rate is reduced; and the enterprise benefits are improved.

Description

technical field [0001] The invention relates to a method for passing an old roadway with inclined normally closed mining under complex conditions. Background technique [0002] In 2013, in order to alleviate the shortage of mine resources, the Liangjia Coal Mine protected the coal pillars and arranged the last working face in this mining area. The working face is the mining area’s uphill inclined longwall and large-inclination mining face, with a slope of 16°. The geological structure of faults in the working face is complex. During the recovery process, it is necessary to recover through many old roadways such as surface material contact roadway and surface transportation roadway. There are many unfavorable factors related to factors such as old lanes and roadway status, plus large-angle lifting transportation along the trough, which will cause great damage to the equipment on the working face, restrict the rapid advancement of the working face, and have a great impact on t...

AI Technical Summary

Problems solved by technology

[0002] In 2013, in order to alleviate the shortage of mine resources, the Liangjia Coal Mine protected the coal pillars and arranged the last working face in this mining area. The working face is the mining area’s uphill inclined longwall and large-inclination mining face, with a slope of 16°. The geological structure of faults in the working face is complex. During the recovery process, it is necessary to recover through many old roadways such as surface material contact roadway and surface transportation roadway. Related factors such as old lanes and roadway status, coupled with the large-angle lifting transportation along the trough, there are many unfavorable factors, which will cause great damage to the equipment on the working face, restrict the rapid advancement of the working face, and have a great impact on the normal advancement of the working face