caving的例句大全

Design of Combination of Smooth Blasting and Double-wedge Cut for Roadway Excavation sublevel undercut caving method

双楔形掏槽方法和光面爆破技术的综合设计分段下部掏槽崩落开采

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Discussion on scraper ore drawing bottom structure in block caving

自然崩落法铲运机出矿底部结构的探讨

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A support method for bottom structure in block caving

矿块崩落法底部结构的支护方法

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I enjoy Science and Art and also snorkeling and scuba diving, caving, abseiling and climbing.

我喜欢科学和艺术，也浮潜，潜水，探险洞穴，游绳和攀爬。

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Based on the similar simulation model experiment, the three forms of the bridge arch, semi_arch and pillar on the top coal caving and drawing characteristics are put forward.

运用相似材料模型试验，提出了顶煤冒放的桥拱式、半拱式和柱式3种结构特征；

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Research on applications of discrete element method in ore drawing for caving system

离散元法在崩落法放矿中应用的研究

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Add PF-GLA for raise the resist caving capacity and lubricity.

加入PF - GLA以增强泥浆的防塌润滑性能.

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The positively charged AlCl _ 2-MMH-bentonite mud system possesses more powerful anti-caving capacity.

AlCl_3-MMH-膨润土体系可成为防塌作用更强的正电泥浆.

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In the vertical-Parallel concentrated bunch-holes caving, the floor pillar caving is a new mining method.

垂直平行密集束 状 孔落矿有底柱崩落法是一种新的采矿方法.

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This paper briefly describes topography and geology conditions of the Dan-jiangkou reservoir, and analyses the influential factors and forms of bank caving, and adopts engineering geologic analogy method to predict the influential area and difficulty degrees of bank caving on the basis of wide investigation.

为了预测水库坍岸范围和发生坍岸的难易程度，对丹江口水库的地形、地质条件和坍岸的影响因素和型式进行了分析。

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Analysis of Complex Roof Caving Process in Mining by Caving Method

崩落法开采时复杂顶板的崩落过程分析

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The fracture of overlying key stratum results in decrease of the roof caving angle and the increase of periodic caving span and weighting intensity.

覆岩关键层的破断使工作面顶板垮落角减小、周期垮落步距和来压强度都增大。

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Caving properties and law of ore in block caving

自然崩落法矿岩崩落特性及崩落规律

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The structural parameters in pillarless sublevel caving such as sublevel height, sublevel drive interval and ore caving interval have a great influence on the ore recovery.

无底柱分段崩落法分段高度、进路间距和崩矿步距等结构参数对矿石回收指标影响大。

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On Ground Pressure Control Method in Block Caving

自然崩落法地压控制方法探讨

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Remining coal seam left in caving zone

浅析开采冒落带内丢煤的复采

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The height of the watering fissures is 21.5m because the height of caving zone is about 10m after the mining of all the 3 seam ( 4 layers), and the result basically accord to the result of theoretic calculating and numerical simulation;

3煤层全采后（4个分层）垮落带高度为10m左右，导水裂隙带的高度为21.5m，与理论计算和数值模拟结果基本一致；

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Through theoretical analysis and laboratory tests the main conclusions of research is as followed: It is effective to implement back filling technique in caving zone and breaking zone, control overburden rock mining subsidence, eliminate surface subsidence and protect the safety of the surface buildings.

通过理论分析和实验室试验，得出：实施垮落带和裂隙带注充技术可有效的控制覆岩采动下沉，消除地表沉降，保护地表建筑物、构筑物的安全。

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The large scale Ω caving bank at the middle and lower reaches of the Yangtze River frequently threatens the safety of the flood control, and the lives and properties of the people along the both banks.

长江中下游河道大尺度的窝崩，常常危及两岸江堤的防洪安全，给人民生命财产造成较大的危害。

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Technology and control of first roof caving in coal working face

采煤工作面初次放顶的技术与管理

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