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- coal mining under reservoir 水库下采煤
- 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。
- 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。
- 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 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。
- coal mining under surface structure 建筑物下采煤
- coal mining under water- containing 保水采煤
- The Jingxing coal mine under the Japanese atrocity 日本枪刺下的井陉煤矿
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- mining under reservoir 水体下采煤
- Roof control and practices on coal mining under complex roof 复合顶板下采煤的顶板控制与实践
- Application of flooding forecasting system to coal mining under sea 水情监测预警系统在海下采煤中的应用
- Safety Decision-making Technology for Coal Mining under Fire Zone 火区下煤层开采的安全决策技术
- The complex resistivity of patial-water saturated shaly sands has been investigated under reservoir condition. 文章研究了泥质砂岩在模拟地层条件下驱替时的复电阻率特性。