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- security rock pillar 安全岩柱
- 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。
- 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。
- 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
- I'll undertake for your security. 我将保证你的安全。
- In the old society we never knew real security. 在旧社会我们的生活从来没有真正的保障。
- He get weekly social security payment. 他按周领取社会保险金。
- Israel, Palestinians restore security link. 以色列巴勒斯坦重回安全临界线。
- What I need now is the security of a happy home. 我现在需要的是一个幸福家庭所给予的安全感。
- What about the question of security? 安全的问题怎麽办?
- He uses his house as security to borrow the money. 他用房子作借钱的抵押。
- She's a poor/good security risk. 她是个不太[十分]危险的人。
- The bank lend him$20,000 without security. 该银行贷给他20,000美元没有抵押。
- They lulled me into a false sense of security. 他们哄骗我,让我产生了一种虚假的安全感。