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- In Xuzhou Coal Mining Area the groundwater hazard is serious due to the larger mining depth and complicated hydrogeological conditions. 徐州矿区开采深度大,水文地质条件复杂,水害严重。主要突出水源为奥陶系含水层。
- Phased Analysis of Large Mining Depth Rock Mass Movement Observation 大采深岩移观测阶段性分析
- large mining depth 大采深
- Large mining equipment cannot be operated on narrow benches. 大型采矿设备不能在窄台阶上操作。
- Large mining claims are segregated into smaller claims. 大规模的采矿要求被分割为更小一些的要求。
- With the increase of mining depth, the problem of floor heave of roadway could become more and more serious. 摘要随着开采深度的不断增加,巷道底鼓问题日趋严重。
- With the increase of mining depth,the possibility for rock burst increases correspondently. 随着煤矿开采深度的增加,冲击地压危险越来越大,已成为严重威胁矿井安全生产的主要灾害。
- The analytical solution of roadway discharge is given,under the condition of rock permeabillty attenuation with mining depth increase. 给出了在岩石渗透性随深度衰减条件下,二维稳定流巷道涌水量的解析解。
- The coordinates of the centre point of a subsidence trough are calculated by the effect transference angle and the mining depth. 利用平面图形几何重心公式计算回采工作面水平投影图形的重心坐标,然后根据影响传播角和开采深度计算下沉盆地中心位置的坐标。
- Alongside mining depth of mine continuing,roadway support displays out soft rocks feature,anchor way of bolt must expand from end bolt to long bolt and all bolt. 随着矿井采深的不断加大,巷道支护表现出软岩支护的特点,锚杆锚固方式由端锚逐步向加长锚、全锚方向发展。
- The Navy likely will phase out large mine sweepers, but it will need ships to deploy the robotic systems, he said. 海军可能将逐步退出大型水雷,但会需要船只部署机器人系统他说。
- An initial mining depth in the thick seam or a depth of a full seam cut will cause an obvious increasing in crack height and also in horseshoe distribution. 增大重复开采厚度以提高采煤工效和矿井经济效益;
- Then based on the practical adjustment of a large mining control network , the effect of the applicattion of data-snooping is discussed. 针对一大型矿山控制网的实际平差过程,研究粗差探测的效果。
- As mining depth of the stope area and geopressure increase,stope wall rock and obsturator are of the possibility of serious yielding destruction and whole instability. 随着开采深度的增加,采场面积扩展和地压增大,采场围岩及充填体潜在着严重的屈服破坏和整体失稳的可能。
- AURY (Tianjin) Industrial Technology Co., Ltd. is a Sino-Australia joint venture focusing on large mining equipment manufacture. 奥瑞(天津)工业技术有限公司是一家中澳合资的大型矿山设备制造企业。
- With mining depth increasing continuously in our country,in condition of mining in the deep-lying,there are many problems in determining displacement angle of stratum at present. 随着我国煤矿开采深度的不断增加,指出了目前岩层移动角的确定存在诸多问题。
- With the increase of mining depth,pre-mining rock stresses increase dramatically,which leads to the rise of the frequency of rock burst occurrence and the drop of mine safety. 随着矿山开采深度的增加,原岩应力水平大大提高,导致岩爆等灾害发生频率提高,矿山生产的安全性下降。
- The paper described in detail the high undercover large mining coal face roof control the basic requirements of the roof control and the strengthening of specific measures. 该文详细叙述了大采高卧底煤工作面顶板控制的基本要求和加强顶板控制的具体措施。
- The company is possessed a large mine abounding with 200,000 tons of mirabilite ore,rich in ore sources and high in quality. 公司拥有一座年提升钙芒硝矿20万吨的大型矿山,矿区资源丰富,矿石品味极高。
- He bit off a large piece of the apple. 他咬下一大块苹果。