2) first mining face under sea
海域首采面
1.
Based on specialties of mining coal under sea,prediction and measurement of height of leaking fissure zone of first mining face under sea were researched.
基于海域下采煤的特殊性,对海域首采面覆岩导水裂缝带高度的预测和实测技术进行了研究,得出了海域首采面的导水裂缝带高度,为制定海域开采上限和安全开采提供了科学依据。
4) Initial mining level
首采中段
5) first mining area
首采区
1.
Distribution of carnallite in salt bed of the first mining area in Qarhan Playa;
察尔汗盐湖首采区上盐层中光卤石分布
2.
Based on the practical situation of Yi Hong surface coal mine,by compared with the original design trenching position of the first mining area and the design changed,and expounds the influence on development and general development trend of the trenching position on the First Mining area changed of Yi Hong surface coal mine.
结合亿宏露天煤矿的矿山实际情况,通过对亿宏露天煤矿首采区原设计初始拉沟位置和变更后的初始拉沟位置的分析比较,阐述了亿宏露天煤矿首采区初始拉沟位置的变更对矿山今后发展的影响及其总体的发展。
3.
How to scientifically ascertain stop border of first mining area in Guobei Coal Mine is expounded.
介绍了科学合理界定涡北煤矿首采区停采边界的背景与做法,以及因此而产生的效益,对三下采煤进行了有益探索。
补充资料：海域首现“可燃冰”
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条