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- Analysis of elastic and plastic zone for middle and soft top coal in use of sublevel-caving 放顶煤工作面控顶区中硬以下顶煤弹塑性区分析
- soft top coal 软弱顶煤
- He jumped from a roof and managed to land on the soft top of a passing van. 他从屋顶上跳下来,设法落在一辆路过的厢型货车的软顶上。
- According to the field investigation at Dayang coal mine, the paper describes behavior of ground pressure of longwall top coal caving face with soft surrounding rock and movement of overlying strata. 本文通过大雁二矿28%23层采面矿山压力的实测分析,论述了软岩矿井大采放比综放开采矿压显现特征和围岩活动规律。
- The coal seam of No. 5102 face in Wuyang coal mine is steep, soft, and undulate.Aiming at this problem, the displacement and stress of top coal, roof and floor were researched by using UDEC software. 摘要针对五阳煤矿5102工作面倾角大、煤层松软、煤层起伏大、综放开采的条件,利用UDEC数值模拟软件分别通过沿工作面走向和倾向剖面建立模型,对顶板(煤)、底板的位移和应力变化进行了研究。
- Exterior features include a removable soft top with a stowage bag and LED taillights with integral reflectors. 尽管他也许并不知道,它在当时,莲花创始人柯林查普曼建成莲花品牌哲学非洲猎豹;
- Crijns also revealed the Evora will do with a soft top rather than a retractable hardtop. Crijns的埃武拉还透露将与软顶而不是一个可伸缩的硬顶。
- The top coal broken mechanism and reasonable determination of caving coal heigh in caving coal faces are expounded. 主要阐述了放顶煤工作面顶煤破碎机理及放煤高度的合理确定;
- Its lightweight soft top doesn't offer security of a hard top but it weights less, retracts easily and doesn't take up nearly as much trunk space. 虽然轻型软篷不如硬顶篷安全,但是它的重量轻、收缩方便,同时可变式的软顶收纳槽,更可为行李箱腾出了宝贵的空间。
- It is key problem to raise the top coal recovery rate of the fully mechanized sublevel caving mining. 提高顶煤放出率是综放开采的一个重大课题,预注水弱化顶煤是解决这一问题的有效方法之一。
- Substantial structural bracing has been added to the storage area previously occupied by the soft top, resulting in additional rigidity. 重大结构支撑已被添加到存储区域以前软顶占领,造成额外的刚性。
- In both cases the hood is moved by a highpressure pump with two hydraulic cylinders, which open the soft top in just nine seconds . 在这两种情况下罩是提出由一个高压泵,与两个液压缸,打开软顶,在短短9秒。
- Spring bamboo licensing sweater imports of raw materials are super soft top mercerized, Australia Chunmeilinuo fine wool. 春竹牌羊毛衫的原料都是进口超级丝光柔软毛条、澳大利亚纯美丽诺细羊毛。
- Practices have proved that quick advancing techniqe is applicable in isolated unmined area Comprehensive top coal caving face. 实践证明,孤岛综放工作面快速推进技术是可行的。
- The caving of hard top coal of 4-2# coal seam in Tongchuan Jiaoping Coal Mining Area seriously impacts the production efficiency of the mine. 铜川焦坪矿区4-2%23煤层坚硬顶煤垮落破碎难题是严重影响矿井生产效益的"瓶颈"。
- This article introduced applications,observation and research's actuality and developing trend of fully mechanized top coal caving mining under water. 介绍放顶煤开采技术在水体下采煤领域中的应用情况、观测研究现状及其发展趋势。
- This weight biased ethic likely means that the roadster will buck the trend towards folding metal roofs in favor of a more traditional (and lighter) soft top. 这重量偏向伦理可能意味着跑车将降压的趋势折叠金属屋顶,取而代之的是更传统的(和打火机)软顶.
- In 1997, the Xingtai Mine succeeded in using bolting &boltmesh supporting tech. in coal roadway(supporting the top coal along the bottom). 1997年,邢台矿在全煤(沿底托顶煤)巷道采用锚杆加锚索的支护技术获得成功。
- Though it eschews the de rigueur folding metal hard top that graces nearly all of its rivals, the thickly insulated soft top quells sound nearly as well as the hard top. 虽然它避开了日rigueur折叠金属硬顶的青睐几乎所有的竞争对手,厚厚的绝缘软顶quells良好的近,以及硬顶。
- The law of top coal movement on a fully mechanized longwall face with top coal caving wasanalysed thoroughly on the basis of field observation andfinite element calculation. 本文根据现场观测、数值计算以及理论分析,详细阐述了放顶煤采场的顶煤变形运动规律,指出了顶煤变形运动可划分成四个区:顶煤变形区,压裂区,松动区和放落区。