This paper analyzes the preconditions for small and medium-sized coal mines to increase coal recovery rate, and puts forward some paths and measures for the second mining of the coal resources.
分析了中小煤矿提高煤炭资源回收率的前提保障条件，提出了复采煤炭资源的途径和措施。
Notable results have been obtained in the multipurpose use and recovery of mineral resources, and the rate of resources utilization has been gradually increased.
矿产资源综合利用和回收利用成效明显，资源利用率逐步提高。
In order to reduce the coal loss and raise recovery ratio, the technique measures of backing poles and falling the bottom are adopted. The recovery rate of face resources is raised.
为了减少煤炭损失，提高回采率，在加采到底煤较厚地段时，采取背杆落底技术措施，提高了采面资源回收率。
It's not only effectively reduced the 10,000 tons' tunneling rate and the cost of coal, but also greatly enhanced the recovery of the mine resources, and achieved considerable economic benefits.
其不仅有效的降低了万吨掘进率、降低了原煤成本，而且大大提高了矿井的资源回收率，取得了可观的经济效益。
It's not only effectively reduced the 10,000 tons' tunneling rate and the cost of coal, but also greatly enhanced the recovery of the mine resources, and achieved considerable economic benefits.
其不仅有效的降低了万吨掘进率、降低了原煤成本，而且大大提高了矿井的资源回收率，取得了可观的经济效益。
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