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- coal mining under water body 水体下采煤
- 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。
- Brief comments on water inflow mechanism of coal mining face tested under water body 推覆体水体下试采工作面出水机理浅析
- mining under water body 水下采煤
- coal mining under water strata 水体下采煤
- 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。
- 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。
- 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。
- 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。
- mining under water bodies 水体下采煤
- Strip-partial mining has an abroad application as an important method of coal mining under buildings. 条带开采是作为"三下"采煤的主要技术措施,在我国有很广泛的应用。
- This is the fundamental source for the supports crushing during coal mining under the unconsolidated confined aquifer in East China. 这是造成华东矿区部分矿井在部近松散承压含水层开采时工作面发生压架事故的根本原因。
- According to the creep mechanics test parameters, we have constructed a nonlinear creep formula, which provides a theory basis for roadway support in coal mining under the sea. 根据含油泥岩蠕变力学参数,推导出横向各向异性非线性蠕变方程,为海下开采条件下的巷道支护提供了理论依据。
- 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.
- 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 fact shows that the single leg type shield support and the technology of discharging coal in the side is an efficient method of coal mining under the condition of steep thick coal seam. 通过井下生产实践表明:单腿支撑柔性掩护支架采煤法和侧向放煤技术相结合是开采大倾角厚煤层一个新的、有效的采煤方法。
- Coal mining can result in groundwater seriously seeping and seriously influencing aquatic environment.Coal mining under water-containing condition in the North Shaanxi area is very necessary. 摘要采煤会造成地下水严重渗漏,同时对生态环境影响巨大,保水采煤在陕北地区是非常必要的。
- The fully mechanized caving coal mining under the railway in mine area will result in difficult maintenance of railway because of great deformation and subsidence speed of terrene and railway. 在矿区铁路下进行放顶煤开采所引起的地表及铁路的变形量大,变形速度快,从而导致矿区铁路维护困难。
- In the other hand ,the denseness materials were studied in application utilizing ,the materials were also used into fire extinguishing and preventing in Jining No.2 coal mine under its special style . 其次对粉煤灰稠化剂这一激活产品进行了应用性研究,结合防灭火注粉煤灰浆特定的工艺在济宁二号煤矿井下防灭火实际中得到应用。
- Under water, famine; under snow, bread. [谚]洪水造饥馑,瑞雪兆丰年。