A convenient and practical formula used to estimate the height water flowing fractured zone has been provided for underwater mining.
为煤矿进行水体下采煤提供了一种既方便又实用的预计顶板导水裂缝带高度公式。
Dr Scott argues that underwater mining will be far less disruptive to the environment than terrestrial mining: there will be no piles of waste rock, since the deposits are directly on the sea floor.
斯科特辩解说水下开采将比陆地开采带来的环境破坏少得多：由于是直接在海底作业，因此将不会有大量的岩石废料。
So indeed are the possible obligations to repair the underwater environment: no legal codes are yet in place for deep-sea mining.
虽然还没有关于深海矿业的法律法规，但更有可能需要承担修复水下环境的义务。
And the Remotely Underwater Operated Vehicle (ROV) is one of the four kinds of walk mechanism for the cobalt-crust mining.
浮游式缆控水下机器人(ROV)是钴结壳开采的四种行走方式之一。
With different construction method, (from Chapter 1 to Chapter 3), they are immersed tunnel, underwater shield tunnel and the underwater tunnel by using mining method respectively.
第1 -3章分别是按施工法区分的水底沉管法隧道、水下盾构法隧道、水下矿山法隧道。
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。
By taking the on-site monitoring and research as a tool, the influence of coal mining, coal pillar size and underwater on the roof stability of coal roadways is analyzed.
阐述了哈拉沟煤矿主采煤层顶板的赋存特征，以现场监测、现场调研为手段，分析了煤层开采、护巷煤柱尺寸及地下水对煤巷顶板稳定性的影响，为今后煤巷顶板稳定性分类及合理支护提供依据。
By taking the on-site monitoring and research as a tool, the influence of coal mining, coal pillar size and underwater on the roof stability of coal roadways is analyzed.
阐述了哈拉沟煤矿主采煤层顶板的赋存特征，以现场监测、现场调研为手段，分析了煤层开采、护巷煤柱尺寸及地下水对煤巷顶板稳定性的影响，为今后煤巷顶板稳定性分类及合理支护提供依据。
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