Design and Optimization of Advanced Support for Irregular and Complex Coal Mining Working Face
As a resource depleted mine,the majority of the coal mining working faces in Nantun Coal Mine are irregularly arranged.During the stoping period of the"knife handle"type fully mechanized mining face,in addition to the docking of the working face equipment,the advanced support equipment for the docking side roadway needs to be removed and installed,increasing the working face docking time and safety risks.In order to reduce working face docking time and safety risks,the roadway support design and advanced support scheme are optimized in the 93lower21 working face.The results show that the maximum deformation amount of the advanced support roadway using unit supports is only 210 mm,which can achieve the completion of the working face docking 1 day in advance,providing a certain reference for the advanced support of similar working face stoping roadways.
国家科技期刊平台
NSTL
万方数据
