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- It is indispensability of overburden failure law for mining under buildings, water bodies and railways, especially mining under water bodies. 覆岩破坏规律探测是“三下”采煤,尤其是水体下采煤不可缺少的部分。
- mining under water bodies 水体下采煤
- The study of mining-induced fracture distributions is closely related to some mining engineering problems such as mining under or above water bodies,relieved coalbed methane drainage, overburden bed separation grouting and mining subsidence control etc. 岩层采动裂隙分布的研究与水体下和承压水上采煤、卸压瓦斯抽放、离层区充填与开采沉陷控制等工程问题紧密相关.
- coal mining under water body 水体下采煤
- mining under water body 水下采煤
- This article introduced applications,observation and research's actuality and developing trend of fully mechanized top coal caving mining under water. 介绍放顶煤开采技术在水体下采煤领域中的应用情况、观测研究现状及其发展趋势。
- When mining under water, the height of the water suture zone in the goaf's overlying strata has direct effect on the safety of the production in mines. 为解决进行水下开采时,采空区上覆岩层导水裂缝带的发育高度直接影响煤矿安全生产问题。
- The determination of damage height of superincumbent stratum of goaf has immense meaning for safety and reasonable exploitation of coal seam under water body, building and railway. 确定采空区上覆岩层破坏高度,对"三下"煤层安全、高效开采具有重要意义。
- Under water, famine; under snow, bread. [谚]洪水造饥馑，瑞雪兆丰年。
- Several fields are under water after the heavy rain. 大雨过後有几片耕地被淹。
- Able to set and harden under water, as Portland cement. 在水中变硬的能在水下定型并变硬的，如波特兰水泥
- Underground pressure emerges and roof management technology with mining under water 顶水开采矿压显现与顶板管理技术
- Keywords sub level caving;thick unconsolidated aquifers;safety pillars under water bodies;engineering geological model; 工程地质模型;放顶煤开采;厚松散含水层;防水煤岩柱;
- The gangue backfilling technology directly using gangue to replace coal buried under buildings, railways, and water bodies is very important in green mining. 摘要井下矸石直接用于充填置换“三下”压煤，是绿色开采体系中的重要内容之一。
- Most amphibians live near or under water. 大部分的两栖动物住在靠近水边或水底。
- The fields were under water after the heavy rain. 大雨后田野为水所淹。
- The boy wanted to duck under water. 这个男孩想潜入水中。
- Ground building is wrecked by ground coal mining under village. 村庄下压煤开采,造成地面房屋破坏。
- Ground building is wrecked by compressed coal mining under village. 村庄下压煤开采,造成地面房屋破坏。
- I will time when you stay under water. 我来计你呆在水下的时间。
