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- underground mined caves 采空区
- The roof of the mine caved in as a result of the explosion. 由于发生爆炸,矿井顶部坍塌了。
- Still another system used in underground mining, which is called caving. This involves making the ore cave in on mined chambers or shafts. The ore is then removed by chutes that carry it down to a deeper level, where there is a haulage system. 地下开采使用的另一种采矿法叫作崩落采矿法。这种方法包括使矿石崩落于已采峒室或井筒,然后矿石再通过溜井放到下面水平的运输巷道。
- 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。
- To handle a cave caused by roof fallin a underground mine is a very hard and dangrous work.This paper introduced new research achievements of Beijing Research Institute of coal mining, CCMRI. 介绍了煤炭科学研究总院北京开采所新近研究成功的用于机械化充填井下各种空洞的泡沫水泥新材料、新设备和新工艺。
- 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。
- Some experiences on stope roof management in metal underground mine are introduced. 介绍金属地下矿山采场顶板管理的几点经验。
- The roof of the mine caved inas a result of the explosion. 由于发生爆炸,矿井顶部坍塌了。
- In the paper,the utilizations on natural energy resources in underground mine ventilation are discussed. 通过实例,对矿井通风中自然能源利用问题进行了分析和论述。
- The Radio frequency communication irreplaceably makes mobile communication realized in underground mine. 射频通信无可替代地实现了矿山井下的移动通信。
- The result indicates the parameter of underground mine abide by some probability distribution. 结果表明,井下生产的一些参数各服从于某种概率分布。
- On this basis calculation method runoff infiltration for mining cave attain introduced. 并在此基础上探索采矿崩落区降雨逞流渗入量的计算方法。
- 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。
- On this basis calculation method runoff infiltration for mining cave area is introduced. 并在此基础上探索采矿崩落区降雨迳流渗入量的计算方法。
- This paper describes and discusses the configuration,coorking principle and design methods,etc,of measuring hoper used in underground mine. 论述了井下矿山矿井计量漏斗的结构、工作原理和设计方法等。
- The paper makes qualitative and quantitative analysis on the potential haulage accident in a certain underground mine of Yunnan. 本文采用FTA法对云南省某地下矿可能发生的运输事故作了定性及定量分析。
- Historically, Sungai Lembing was a rich and famous town, as the main producer of tin in Pahang.Lembing is the deepest and longest underground mine in the world. 林明镇是个很富有和著名的市镇,因为它是彭亨州的主要锡矿生产区.;林明是世界上最深和最长的地下锡矿。
- Its extracting method includes surface well drilling and underground mine tunnelling.The tunnelling method is suitable for many mine areas in our country. 开发煤层气的方法有地面钻井开采和井巷开采两种,其中井巷开采方法适用于我国许多矿区。
- At last, the paper introduces the application method of wetting agents to suppress dust in underground mines. 最后介绍了湿润剂在地下开采矿山中的具体应用方法。
- Study on Feasibility of Transfer from Open-Pit Mining to Underground Mining in Washan Pit of Nanshan Mining Co. 南山矿业公司凹山采场露天转地下可行性研究。