1)  large cutting height workface
大采高工作面
1.
Through similar simulation from plane and solid,strata behaviors is studied in large cutting height workface,compared with on-the-spot result,some basic feature of strata behaviors are gotten with large cutting height workface.
通过平面和立体相似模拟对大采高工作面矿压显现进行了研究 ,并与现场观测的结果进行了对比分析 ,得到了大采高工作面矿压显现的一些基本特
2)  Da Cai
大采
1.
On the Reason for Naming Da Cai and Xiao Cai in Remote Ages;
上古时称大采、小采命名之义初探
3)  large mining height
大采高
1.
Study on the structure characteristics and movement laws of overlying strata with large mining height;
大采高采场覆岩结构特征及运动规律研究
2.
Approach on the large mining height technology at blasting face;
炮采工作面大采高技术初探
3.
Approach on large mining height at middle thick coal seam;
中厚煤层大采高回采工艺探讨
4)  High and large stope
高大采场
5)  super great mining height
特大采高
1.
In order to develop the high-yield and cost-effective working face and enlarge the application area of the technique of full height mining at one time,the structure height of hydraulic support keeps increasing( those supports whose height is greater than 5 m are called the super great mining height).
为发展高产高效工作面及扩大一次采全高开采的适用范围,当代液压支架结构高度不断增加,大于5 m的可称为特大采高液压支架。
6)  large mining depth
大采深
1.
Strata behavior complexity in large mining depth and high inclined seam;
大采深、大倾角煤层综采矿压显现规律研究
参考词条
补充资料:凹模、凸凹模工作型面加工工艺过程
1)备料。 n
    2)锻造。锻成长方形的坯料(每件留长工艺夹头)。 n
    3)热处理。退火。   n
    4)铣(刨)削。铣(刨)削六面成长方形模块。 n
    5)磨削。磨削上、下两端面及相邻两侧面,用90。角尺测量相邻两面的垂直度。 n
    6)钳工加工。用平板和划线盘按图划线,并打样冲眼;用钻头钻螺纹底孔;用圆柱销孔的预孔;用钻头钻挡料销让位孔;用钻头在中心处钻穿丝孔等;正、反面孔口倒角;凸凹模用钻头孔扩,保证刃口高度;攻螺纹;铰孔。n
  7)铣削。平口钳装夹工件;用的立铣刀铣削型孔至尺寸,保证深度。 n
   8)热处理。凹模工件淬硬至HRC60~64,凸凹模工件淬硬至HRC58~62。 n
   9)平磨。磨上、下两端面及相邻两侧面,用90。角尺测量相邻两面的垂直度至图要求;退磁。 n
   10)线切割。按图编制线切割程序,切割模型孔成形,留单面研磨余量0.005 mm。 n
   11)钳工加工。研光线切割面: n
   12)检验。 n复合冲裁模的装配应选择凸凹模作为装配基准件,先装下模部分,后装上模部分
说明:补充资料仅用于学习参考,请勿用于其它任何用途。