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- Huojitu excavated coal pit 活鸡兔采煤塌陷区
- Landscape ecological architecture in excavated coal diggings is one of attention-getting hotspots international society. 采煤矿区景观生态设计是目前国内外关注的热点之一。
- Yes. This coal pit can be said to be China's oldest mechanically opened coal mine. 是啊。这口矿井可以说是中国年纪最大的一口机械矿井了吧。
- Establishing the safe and utility orientation system of the mine personnel in coal pit is of great significance for improving the safe production management of the coal pit. 摘要建立可靠实用的煤矿井下人员定位系统，对改善煤矿的安全生产管理有着重要的现实意义。
- By the view point of rockmass structure ,the author believes that water-burstings of karst collapse column result from rifts process because of water dynamic and press of excavated coal. 并从陷落柱岩体结构力学特征入手,分析了陷落柱导突水原因及影响因素,探讨其突水机理。
- He has to work in Coal pit. 他必须到小煤窑背煤。
- This technology fits abroad excavating coal mine because of its high veracity. 该技术有较高的准确率,适用于煤矿采区。
- Study on Treatment of Water in Coal Pit 采煤坑水处理方法研究
- Excavate coal subside seeper area is the special component of the surface water in Huainan. 摘要采煤塌陷积水体已成为淮南市一种特殊的地表水体。
- The cutter of the coal mining machine bears dynamic load varying with time during excavating coal. 采煤机截齿截割煤体时,截齿承受随时间而变化的动载荷。
- Excavated terra-cotta Horses of the No. One Pit. 一号坑陶马一部。
- Excavate coal is primary production link in coal mine production, therefor, Weaving excavate coal working face supersedure plan has instructional meaning. 采煤是煤矿生产中的主要生产环节,因而编制采煤工作面接替计划对煤矿生产具有指导性意义。
- In order to enhance the efficiency of excavating coal, Beishan coalmine attempts to adopt millisecond delay direct initiation at working face. 百善煤矿为提高采煤效率,尝试在采煤工作面实行毫秒延期反向起爆。
- This paper,by a practical example,presents a new kind of drilling technological process in the bedrock with excavating coal gob. 通过工程实践,掌握了在煤矿采空区进行基岩钻探所采用的钻探工艺及分析岩层破坏变形的钻探试验方法。
- The archaeologists excavated a buried city. 考古学家发掘出一个埋在地下的城市。
- The great undulating of soleplate of the third coal layer in Wangping well field badly influence exploiting disposal and excavating coal laneway. 针对王坪井田3号煤层底板起伏变化大,严重影响开拓及采煤巷道布置的现状,利用趋势面分析的方法,分析了井田内的构造展布规律。
- It discussed the method to design,manufacture and use fixed installation protruding hob to process milling front cylindrical gear of excavating coal machine. 论述了设计、制造和使用固定安装突起滚刀加工采煤机磨前圆柱齿轮的方法。
- Earth, rocks, or clay excavated in mining. 废石在采矿过程中挖掘的土、岩石或粘土
- Study on geological hazards of closed large-medium open coal pit 大中型露天煤矿闭坑地质灾害浅析
- In excavating coal,the laneways will be distorted and damaged.By analyzing the causes we can find out reasonable control methods to protect the laneways. 巷道受到采动影响后,将产生各种各样的变形与破坏,分析影响巷道变形破坏的主要原因,就可对巷道采取合理的控制方法。
