coal mining methods的意思|示意

The determination of the height of the transmissive fracture belt has been a key point for underwater coal mining. There are no precise methods and major research methods up to the present.

导水裂隙带高度的确定是水下采煤工作之重点，目前并没有一个完全可以精确确定的方法。

Based on the analysis about the composition of cost in coal preparation and the practical situation in Jincheng mining bureau, some methods to decrease the cost are put forward.

在分析选煤加工费构成的基础上，针对晋城矿务局某矿实际提出了一些降低选煤加工费的方法和途径。

This paper briefly analyzed the common running fault of coal mining transformer. It also provides the methods that how to check the faults and how to solve the problem.

文章浅析煤矿主变压器常见的故障，日常故障巡查方法，以及如何排除故障。

These achievements are not only significant in the safety of coal mining, but also in the medium scale experiment to study the cause of earthquake and to test the methods of earthquake prediction.

这些成果不但对于煤矿安全具有重要意义，而且对于认识构造地震成因和验证预测方法，也具有中尺度试验意义。

It expounds various mining methods and steps, including the bench demarcated, plan mining bench top and bottom floor, the coal and overburden amount of plan mining, and coal quality indicators.

阐述编制露天矿的各种开采计划的方法和步骤，以及其台阶划分、计划台阶顶底板的控制、编制剥离量和采矿量及其煤质指标等；

This paper introduces the methods and measures of the adjustment of support tilt caused by ultrahigh mining in fully mechanized coal face.

本文介绍了综采工作面回采超高时倾斜歪倒支架调整的方法及措施。