您要查找的是不是:
- safety rock pillar 安全岩柱
- Mining on conditions that ponding at the same layer of Yongquan mine area,the method and relative technical parameters of leaving the safety protective coal rock pillar are introduced. 介绍了阳泉矿区在有同层积水威胁情况下开采,留设安全保护煤岩柱的方法和有关技术参数。
- In order for safety, it requires to accurately calculate the shortest net rock pillar between two roadways for guiding drivage construction when the interval between two roadways is very short. 为了确保安全,当两巷道之间的距离很近时,需要准确地计算出两巷道之间的最短净岩柱来指导掘进施工。
- This paper provides a simplified mechanical treatment for coal / rock pillar and roof in underground mining. 本文对地下采矿中遇到的煤岩柱及顶板进行了力学的简化处理;
- One day, when he was plowing with his body tied to a hawser hung under the rock pillar of the waterfall, he heard his mother's voice calling for him. 一个名叫大乘的人,自幼父母双亡,靠采卖蘑菇为生。
- From the cataestrophic theory, applying related equations, this paper discusses on physical mechanism of unstable coal / rock pillar, and the conditions of the unstability are also given. 从突变理论出发,引用煤岩损伤本构方程,讨论了煤(岩)柱失稳的物理机制,并给出了煤(岩)柱失稳的条件。
- rock pillar body partition modeling 岩柱体分区法
- Car commercials put their vehicles in the most improbable of places: sides of cliffs, tops of rock pillars, middles of deserts. 汽车的广告老是把车子摆在不切实际的地方,例如悬崖边、岩柱顶端或是沙漠中央。
- Mine pillars and rock pillars to be preserved as specified in the mining designs shall, within the prescribed period of time, be protected and may not be exploited or damaged. 第十四条矿山设计规定保留的矿柱、岩柱,在规定的期限内,应当予以保护,不得开采或者毁坏。
- Confirming Least Rock Pillar Thickness in Cross-cut Coal Uncovering 石门揭煤最小预留岩柱厚度的确定
- It seemed an eternity before news of his safety reached her. 他平安的消息到达她那里之前,那段时间似乎是无限漫长的。
- Thanks to I had tied then the safety belt. 幸亏我当时系上了安全带。
- The ship came about and headed back for safety. 这只船掉过头往回开到安全地带去。
- I don't wonder you were anxious about their safety. 你为他们的安全着急,我是不奇怪的。
- In the end they reached a place of safety. 他们终于到达了一个安全的地方。
- When do the new safety rules come into force? 新的安全规则何时生效?
- The safety precautions are totally inadequate. 这些安全措施完全不合格。
- I'm worried sick about my son's safety. 我十分担心我儿子的安全。
- If I lose my job, I've got no safety net. 我丢掉这份工作就无计可施了。
- We're all concerned for her safety. 我们都为她的安全担忧。