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- Eraluating the mined out area is one of effective and dependable ways for exploring placer gold. 指出以过采区为依据寻找砂金矿可靠性大，风险度小，是行之有效的途径之一。
- The technical measures of the filling of mined out area employed in Dazhuangzi Gold Mine were introduced and an assumption to improve it further was put forward. 文中叙述了大庄子金矿井下采空区充填工艺,介绍了充填过程中的技术措施,并提出了进一步改进设想。
- On the basis of the investigation,with the rockmass mechanics and numerical simulation, the mechanism of roof falling of stope and mined out area on a large scale are discussed compendiously. 根据近几年对石膏矿山的现场调查,结合岩体力学的相关理论和数值模拟技术,对石膏矿采场顶板冒落及大规模采空区顶板冒落机理作了简要探讨,据此提出了预防采空区冒落的措施。
- Spacial location of mined out areas can be tested,which will guide next designing work. 通过现场钻探验证,揭示采空区的空间位置,对下步设计工作具有指导意义。
- After the whole area had been mined out,all the miners have left. 整个地区的矿全都挖光后，所有的矿工就都离开了这里。
- After the whole area has been mined out, all the miners have left. 整个地区的矿全都挖光后，所有的矿工就都离开了这里。
- mined out area 采空区
- he geological hazards by abandoned coal mine woring in Mentougou region is very serious.In this region,high-resolution earth resistivity method has been used to detect the old mined out area. 针对门头沟区采空灾害十分严重的情况，采用二维自动地电阻率方法进行探测。
- Statistical analysis of the character of acoustic emission for nonlinear dynamical damage in mined out areas supported by composite rock materials 岩石基复合材料支护采空区动力失稳声发射特征统计分析
- Two-dimensional and three-dimensional FEM are applied to evaluate the hazard potential of underground mined caverns to the highway on their above ground. 应用二维及三维有限单元法对某高速公路下伏-多层倾斜复杂地质条件老采空区的变形与稳定性进行了数值模拟。
- Keywords Mine areas;mined out areas;complicated physical exploration;drilling;Zhangqiu in Jinan city;Yuegongqiao; 矿区;采空区;综合物探;钻探;月宫桥;济南章丘;
- The mined-out area due to underground mining is one of the main risk sources of mines. 地下开采留下的大量采空区是影响矿山安全生产最主要的危险源之一。
- The chief purser assigns out area of responsibility. 乘务长给我们分配责任区域。
- The laws of ground surface subsidence and rockmass movement in east area of Chenchao iron mine due to underground mining are studied. 东区现有地表下沉属于不连续下沉,岩层破坏主要是缓慢型破坏。
- In 1993,underground mining was carried out in Zijinshan Gold Mine,and after several extensions opencast mining was accepted in 1997. 紫金山金矿于1993年首先进行地下开采,几经扩建后1997年转向露天开采,当年实施上部矿体覆盖层揭顶大爆破,低成本大批量剥离废石;
- Numerical simulation was carried out for underground mining under the slopes of the Anjialing Open Colliery in Pingshuo. 采用这种方法对平朔安家岭露天煤矿边坡下的井工开采进行了数值模拟。
- I rest under shade trees and dug out areas. 我在树荫下休息并掘地。
- The PV method is applied to wet injecting system of underground mine and test verification is conducted. 在研制成的“煤矿井下的湿喷作业系统”中应用了“筑峰填谷”法，并进行了试验验证。
- Collapse of stope roofs is one of disasters occurring at underground mines. 矿山采场顶板冒落是地下矿山开采中常见的灾害。
- mined out areas 采空区
