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- limited rock cover 极限项板厚度
- Sedimentary rock covering older crystalline layers. 沉淀岩覆在旧的水晶状层之上的沉积岩石
- The preliminary thickness of the subsea tunnel rock cover was determined through using project analogy method. 根据国内外已建成的海底隧道资料,采用工程类比方法初步确定象山港海底隧道的最小岩石覆盖厚度。
- According to above-mentioned methods, the engineering analogy is used to decide the minimum rock cover of subsea tunnel at Xiang Shan harbor. 利用上述三种方法,对象山港某海底隧道的最小岩石覆盖层厚度进行工程类比。
- In order to choose rock cover of Xiamen subsea tunnel now,3D elastoplastic constitutive relation and damage evolution equation for 4 profiles has been done along the longitudinal of the tunnel. 在厦门海底隧道轴线的地质剖面图上,选取了4个典型的剖面,应用多裂隙岩体三维弹塑性本构关系和损伤演化方程进行数值分析研究,得到了应力分布、洞周位移、塑性区、损伤区等结果。
- By means of analysis of stress disturbed area,and comparing rock cover of weak regolith with stress disturbed area at axis and raising or decreasing,it is easy to determine minimal rock cover. 通过对应力扰动区的分析,以及隧道轴线位置、轴线升高或降低后各剖面应力扰动范围与弱风化层厚度的对比,很容易确定厦门海底隧道的最小顶板厚度;根据应力分布、洞周位移、塑性区、损伤区结果,评价了海底隧道的开挖稳定性。
- Studies on Mechanism of Spalling of Rock Cover 岩石覆盖层抗震塌机理研究
- Rock covering destroying parameter is the scientific basis of reasonable preserving waterproof coal pillars and guarantees safety production and retrieves coal resources. 覆岩破坏参数是矿井合理留设防水煤柱,保障矿井安全生产和提高煤炭资源回收率的科学依据。
- Surely there is a limit to what one can bear. 人的忍耐肯定是有限度的。
- The proposal set a time limit of one year. 提案规定了一年的限期。
- Study on Rock Cover and Route Optimization of Subsea Tunnel 某海底隧道岩石覆盖厚度及选线方案优化研究
- Even a limited confrontation can escalate into a major war. 即使是局部的对抗也可能扩大成一场大战。
- Only a limited number of places are available. 只有少数地方可供使用。
- The edition is limited to 500 copies. 该版限出500本。
- RESEARCH ON ROCK COVER THICKNESS OF SUBMARINE HIGHWAY TUNNEL 跨海公路隧道岩石覆盖厚度探讨
- We have limited funds and several competing claims. 我们的基金有限而争相申请的却有几处。
- Habitat and Ecology: On rocks covered with litter under forest, alt. ca.300 m. Flowering: Mar.- May. 生境与生态:生于溪旁林下有腐殖土的岩石上,海拔约300米。花期:3-5月。
- His intelligence is rather limited. 他的智力相当有限。
- Habitat and Ecology: On rocks covered with litter under forest, alt. ca.300 m. Flowering: Mar.-May. 生境与生态:生于溪旁林下有腐殖土的岩石上,海拔约300米。花期:3-5月。
- What's the speed limit on the motorway? 高速公路的速度限制是多少?
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries