Both the deformation characters and the failure mode of the large cross-sectional longwall installation roadway under compound roof are becoming an emergent issue than ever before due to the rapid development of modern mining equipment. Various engineering applications have revealed that the insufficient design and inappropriate support technology are the main reasons for the fatal accidents as...

This study involves seismic monitoring of a deep coal mine. The purpose is to examine the processes responsible for induced seismicity. A seismic network consisting of five threecomponent short-period seismometers located above the mine recorded the seismic data. The events discussed here occurred from March 1, 2009 until April 7, 2011 during the mining of three longwall panels and the data was...

A mechanical support in a longwall complex requires proper supervision and control of operating parameters because it is responsible for the safety machines workers. Its main functions are to protect excavation against adverse effects rock mass move along with operational progress shearer scraper conveyor. In era Industry 4.0 as well green economy sustainable development, development devices in...

A powered roof support is an element of a longwall complex. It connected with scraper conveyor by sliding system. The carries shearer mining the coal. second function to protect excavation against uncontrolled impact rock mass. This paper focuses on analysis effectiveness support. main objective determine factors influencing failure-free operation in exploitation process. Moreover, author discu...

Abstract There were 37 longwall faces operating in mines the United States 2019. The average panel width for these longwalls was approximately 368.5 m (1209 ft). This translates to a range of 170–240 shields per longwall, depending upon shield. movement is significant contributor respirable dust overexposures operators. Foam expected have potential reduce this shield generation. foam applied ar...