With the increase of mining depth, the underground heat harm becomes more serious. Especially for deep shaft conditions, the temperature lowering has become a very important content in safety work.
随着矿井开采深度的增加,井下的热害日趋严重,尤其对于深井条件下,降温工作就成了安全工作极为重要的内容。
The change in the development system can have great impact on the mining, safety, mine look and economic benefit of the production shaft.
开拓系统的变更对生产矿井的开采、安全、矿井面貌和经济效益将产生重大的影响。
The change in the development system can have great impact on the mining, safety, mine look and economic benefit of the production shaft.
开拓系统的变更对生产矿井的开采、安全、矿井面貌和经济效益将产生重大的影响。
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