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      face
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    Dynamical Geology Evaluation and Controlling Methods of the Roof Stability for Longwall Top-coal Caving Face
    综放顶板岩体稳定性地质动态评价及控制
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    Mining In Fully-mechanized Coal Face With 180° Turning
    综采旋转180°开采
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    A Study of Strata Mechanics and Support Resistance on Fully Mechanized Longwall Face
    综机采矿压及支护阻力的研究
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    INQUIRY OF THE SPECIAL FEATURES OF "TWO ZONES" OVER THE NO8101 WORKING FACE UNDER THE WEISHAN LAKE
    微山湖下8101“两带”特征浅析
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    AN EXPERIMENTAL STUDY ON RESIDUAL SHEAR STRENGTH ON ROCK STRUCTURE FACE
    岩石结构残余抗剪强度试验研究
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  工作面
    Roof Control inCoal Face Using Individual Props
    单体支柱工作面顶板的控制
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    Modeling Study of Rock Pressure in Longwall Face
    长壁工作面矿山压力的模拟研究
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    Application of π-beams in coal face under wire-mesh
    π型钢梁在网下工作面中的应用
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    FEM ANALYSLS OF DEFORMATION BEHAVIOR OF SURROUNDING ROCK AT FACE END FOR TYPIC CAVERNS
    典型洞型工作面端部围岩变形特征的有限元分析
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    Deep-hole Grouting at Face of Deep Shaft Bottom-
    立井深部工作面深孔预注浆
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  “face”译为未确定词的双语例句
    Surrounding Rock Control Theory and Application Study of the Coal Face with Greater Mining Height
    大采高采场围岩控制理论及应用研究
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    Study on Completed Equipment of Thinner Seam High Efficient Fully Mechanized Mining Face
    较薄煤层高效开采工作面设备优化配套研究
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    Research on the Movement and Control of "θ" Letter Type Overlying Milti-Strata Spatial Structures of Face Surrounded by Mined Areas
    四面采空采场“θ”型覆岩多层空间结构运动及控制研究
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    STUDY ON THE RELATIONSHIP BETWEEN SUPPORTS AND SURROUNDING ROCKS IN LONGWALL FACE USING FINITE ELEMENT METHOD
    用有限元法分析长壁工作面支架-围岩力学关系
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    APPLICATION OF COMPUTER SIMULATION IN COAL FACE PLANNING
    计算机模拟在编制回采工作面规划中的应用
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  face
       The Yang-Baxter equation admits two classes of elliptic solutions, the vertex type and the face type.
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       It is well known that singular maps (i.e., those have only one face on a surface) play a key role in the theory of up-embeddability of graphs.
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       It is found that the head-on face (in contact with solution) of the films is green while the back face is white.
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       The phase transformation from a hexagonal close-packed Ni to a face-centered cubic Ni structure occurred when the heat-treating temperature was increased.
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       Nanocrystalline nickel with an average diameter of about 16 nm and a face-centered cubic (fcc) structure was uniformly attached to the surface of carbon nanotubes (CNT) by wet chemistry.
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         The expedient quantities of reserved working faces for regulating interference has been calculated by The ory of Queue in this paper.Suppose that the input and output are in Poisson and negative exponential distri-bution respectively, and the service takes as soon as interference appears, the text has used a queuing model with limited input for calculation.Regarding to the interval between the time to finish driving the next working face and the time to finish working theprevions one as a random...
            本文系用排队论的方法来计算应付故障的合理备用工作面数目.在计算中,采用有限输入,随到随服务的概型,输入流和输出流各按泊松和负指数分布. 此外,文中将新工作面的掘成和旧工作面采完日期之差,看成是一个正态分布的随机变量,从而计算出最有利的预期超前掘进量. 在数字分析的基础上,所导出的计算采掘平衡的方法,实际应用时也很简便.
文摘来源
         This article is a preliminary summing-up of experience from investigation, chiefly through field observations, of the rule governing the indication of underground pres-sure at the longwall working faces of the Tong Chia Chuang and Lin Hsi Pits of the Kailan Mines.A preliminary analysis dealing with the following problems is fully treated.① the unit-pressure acting upon column supports at the working face.② the amount af roof subsidence at the working face.③ the rate of roof subsidence at t...
            本文主要通过现场观测,对开滦唐家庄及林西矿主要煤层长壁工作面矿山压力显现规律作了初步总结.并对以下三方面问题作了初步分析:①回采工作面支柱承压值;②回采工作面顶板下沉量;③回采工作面顶板下沉速度.
文摘来源
         The 15-foot seam and its underlying 8-foot seam of the Tu-er-ping Mine, constitu-ting a group of thick seams with hard roofs lying closely together. This article is based upon obervations made on the 15-foot seam while mining was carried out at the № 2647 Face.Roof control was accomplished by forced-down caving, with entire roof subsiden-ce, thereby noting the breaking-up and the shifting of the roof, for ascertaining the rock pressure and its natural law.Such study brings benefit as to the improvemen...
            杜儿坪矿十五尺煤层与下伏八尺煤层组成一组缓倾斜、硬顶板、近距离的厚煤层群.本文根据开采十五尺煤层调查资料和杜儿坪矿该煤层的2647回采工作面现场观测资料,分析了十五尺煤层坚硬顶板的垮落性,在采用人工强制冒顶全部垮落法管理顶板的条件下,顶板岩石的破坏和活动过程以及引起的矿山压力及其显现规律.这对于改善顶板管理方法是具有重大的实际意义.通过分析表明:十五尺煤层坚硬顶板在采用炸药爆破顶板,消除直接顶之石灰岩的绞接作用,顶板是能够冒落的.并且,采用分层开采能够限制老顶活动对工作空间的威胁.
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