room mining

A large number of mined-out areas usually formed, in the process of mineral resources exploitation, Open-stope method including breasting mining method, room-and-pillar method and shrinkage mining method were adopted in underground mine.

地下矿山应用全面法、房柱法及留矿法等空场类方法进行矿产资源开采过程中，通常会形成大量的采空区。

According to mining condition in Xinli mining area, the room and pillar filling method for large and thick ore-body is determined after research.

根据新立矿区开采技术条件，研究确定对厚大矿体采用分矿房矿柱分层充填法开采。

The microstructure variety of coal roof sandstone produced from Hebi mining area under the room temperature to 1 200 ℃ high temperature has been studied by SEM, polarizing microscope, TG and DTA.

采用SEM，偏光显微镜和热分析仪等方法研究了鹤壁煤层顶板砂岩在常温至1200℃高温条件下微观结构的变化。

The general automatic communication system integrates the computer monitoring and industrial TV monitoring used in the different phase of mining, the working environment and equipment condition of the complete mine can be monitored and controlled from the surface central control room.

矿井综合自动化系统是将矿井各生产环节的计算机监控、工业电视监视系统融为一体，在地面中央调度控制室就可实现对全矿井各生产环境和设备的监视和控制。

A coal mine air compressor room of Huainan Mining Industry Group is arranged six L8/ 60-7 air compressors, with the synchronous motor driving directly, excitation counters for excitation power.

淮南矿业集团某煤矿压风机房布置6台L8/60-7压风机，用同步电机直联拖动，励磁柜供励磁电源。