For steel enterprises, except the macroeconomic environment changes need to worry, with three mines "greedy" struggle, also is very urgent. With the launch of iron ore index each big steel enterprises will also face the international iron ore market competition ", "if China makes a deal with the new steel enterprises cannot situation, it will become mining giant: always in the most low-end steel profits chain.
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"There are three coal mines surrounding the village and only one road out," said Mr. Wei, who has pleaded with his mother to leave the village.
魏勇请求他的母亲搬离这个村庄，他说：“这里周围有三个煤矿，却只有一条路通向外界。”
Along with the mines toward deep level in China, the problems of soft rock are becoming more and more outstanding, especially controlling surrounding rock of three-soft coal seam.
随着我国煤矿开采越来越趋向深部，煤矿软岩问题便越来越突出，特别是三软煤层回采巷道的围岩控制问题。
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