• 、小房柱

    Room-and pillar mining method with small room and pillar.

    youdao

  • 针对陕北干旱缺水实际,分析了式保水开采设计原则

    Aiming at the problem of drought and water shortage in north Shaanxi, we analyzed principles for designing room and pillar water-preserved mining method.

    youdao

  • 人工锚杆一种前途开采缓倾斜锰矿床的采矿方法

    Bolting manual pillar and room method is a good future method of mining Mn ore body of medium thickness and small pitch.

    youdao

  • 房柱开采充填开采优点相融合提出了点式膏体充填采煤方法

    We propose a new mining method: point-pillar paste filling based on the combined advantages of room-pillar method and backfilling.

    youdao

  • 通过理论分析现场实测,对采煤矿压显现规律及其特点进行了探讨。

    Based on field observations and theoretical analyses, the characteristic of periodic caving of immediate roof and main roof in a room and pillar system was analyzed.

    youdao

  • 国外高产高效矿井建设是以单一煤层长壁房柱式综合机械化主要开采技术

    The main technology to realize high production and high efficiency in abroad is fully mechanized long-wall mining for a single seam or room-and-pillar mining.

    youdao

  • 理论依据,确定房柱式采煤法基本结构参数计算公式

    On the theory of "beam", the basic structure, parameters and formula for rooms & pillars have been educed.

    youdao

  • 本文探讨了影响稳定性因素提出采用锚杆支护加固煤减小尺寸提高房柱采煤回采技术途径

    The factors affecting coal pillar stability are discussed, and the technical way reducing coal pillar size and enhancing recovery ratio is put forward by means of rock bolting.

    youdao

  • 实测资料统计分析基础上,建立了高陡山房柱地下开采岩体移动变形预测分析模型,并给出了岩体变形破坏的极限值。

    The theoretical formulas are developed and applied to the prediction of the rock mass displacements and deformations due to underground mining by pillar-and-room method in mountain areas.

    youdao

  • 本文研究减小尺寸提高房柱采煤回采具有明显理论指导意义,对解决我国生产矿区面临的不规则区段煤层开采问题具有实际意义

    These studies have evident theoretical significance to decrease coal pillar size and enhance recovery ratio, and practical importance to solve the problems of irregular seam mining in our country.

    youdao

  • 每间设有的露台,在逗留其间享受城市全景景。

    Each comes with a colonnaded balcony to enjoy panoramic city or river views throughout your stay.

    youdao

  • 的上向分层胶结充填我国应用较为广泛,后期回采条件较差

    The practice cf mining room first and then pillars by overhand cut and cemented fill is widely used in China, but the condition for pillars recovery in later period is normally worse.

    youdao

  • 普通的单元比较少见一些框架结构的套别墅中多能见到

    Column: seldom to be seen in common house, but exist in some suite and villa building.

    youdao

  • 地幔产生大面积软流圈上涌沿断裂形成岩浆导致大规模溢流玄武岩裂隙式喷发

    Mantle plumes induced asthenosphere upwelling and development of magma Chambers along deep-sited faults, and thus resulted in fracture eruption of flood basalts on large scale.

    youdao

  • 雪松支撑花旗木材跨越仪式餐厅。

    Cedar columns support Douglas fir header logs that span across the ceremony and dining rooms.

    youdao

  • 稳定健身浮动屋顶使天窗窗口作用最大化,特别地设计成通常提供侧向支撑的形式。

    To stabilize the floating roof over the gymnasium and to maximize the effect of the clerestory windows, steel columns were specially designed to provide more lateral bracing than usual.

    youdao

  • 稳定健身浮动屋顶使天窗窗口作用最大化,特别地设计成通常提供侧向支撑的形式。

    To stabilize the floating roof over the gymnasium and to maximize the effect of the clerestory windows, steel columns were specially designed to provide more lateral bracing than usual.

    youdao

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