surface coal mining 露天采煤
COAL MINING SURFACE SUBSIDENCE PREDICTION 煤矿地表沉陷变化预测及环境影响评价以河南省新安县地源煤业有限公司为例
Don Blankenship, CEO, Massey energy: "Most coal mined by surface mining cannot be deep mined... energy resources would be lost if not surface mined... our company is an energy company," he added.
Massey Energy的首席执行官Don Blankenship表示:“采用地表采矿,大多数煤炭不能深采…不采用地表采矿,会造成能源损失…我们公司是能源公司。”
Mobility between surface mining, underground mining, coal or metal mining sectors may be limited by differences in production technologies and licensing requirements.
表面开采,地下开采,煤或金属采矿行业之间的流动性可能会因生产技术和许可要求的差异而受限制。
Moreover, there are some other influencing factors such as: thick loose bed, surface mining degree, impel speed of working face, coal mining and roof manage methods, mining procedure and time.
此外,厚松散层、地表采动程度、工作面推进速度、采煤方法与顶板管理方法、开采程序及时间因素等对采场覆岩空间结构均有一定影响。
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