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- Keywords coal seam thickness;substep drivage;support parameter;support method; 煤层厚度;分台阶掘进;支护参数;支护方法;
- substep drivage 分台阶掘进
- The cut way and hole parameters affect the drivage efficiency and cost. 掏槽方式及布孔参数影响着掘进效率和成本。
- Due to the use of discretion of variable substep,this software is more suitable to thin section,rotational castings. 同时由于采用了变步长剖分，使本软件十分适合于处理薄壁回转类铸件的凝固模拟。
- Loads are step changed (stepped) at the first substep of this load step to the values of this load step (i.e. 所有本子部加载步赋值于前一个加载步在变化！！
- Mine rational drivage rate is a very important role in banlancing coal cutting and driving. 合理掘进率对矿井采掘平衡具有重要的作用。
- Therefore,increasing the rock drivage speed has the most inportant meaning to accelerate the shaft building. 因此,提高岩巷掘进速度,对加速煤矿建设有非常重要的意义。
- SCs were isolated by warm enzyme digestion, tissue culture, cold enzyme digestion of substep and cold enzyme digestion of combine. 雪旺细胞的分离采用了组织块法、热酶消化法、冷酶分步消化法和冷酶联合消化法。
- For teachers ,the difficulties in teaching methods and the content of physis learning can be settled by substep with lagers teaching into practice. 教学上实施分层分步，解决教师教法和物理学习内容的困难。
- The extraction of blind orebodies in the main stope may expand the extraction area with only very little drivage work. 通过主采场探边扫盲,在增加很少掘进量的基础上,扩大了采场回采面积。
- In the drivage of the coal drift in the Zhangji coal mine, most of the coal drift is revealed to be composite roof. 在中厚煤层复合顶板条件下,合理确定小煤柱尺寸及巷道支护参数,可提高煤炭回收率,保证巷道正常掘进和在服务期间内的使用。
- This paper applied the FLAC software, adopted themethod of numerical Simulation, simulated substep the process of mining of themathematic model of groud subsidence excavation. 运用FLAC软件,采用数值模拟的方法,对石人沟铁矿地表沉陷数学模型的开采过程进行分步开挖模拟。
- But in the mass,rock drivage in our country is slow and inefficient,which affects the properly conjoining of coal production. 但我国岩巷掘进整体上表现为速度慢、工效低,影响了煤炭生产的合理接续。
- This lext mainly discusses the comprehensive comparison of adopting different voltages for supplying long distance drivage face. 本文主要论述了采用不同电压供长距离掘进工作面的综合性比较。
- The improvement of the advance rate of roadway drivage is the basic guarantee for constructing highly effcient and productive mines. 提高巷道掘进单进是建设高产高效矿井的根本保证。
- Therefore,the efficient work of methane pre-warning should be done in order to provide safety for coal laneway with mechanized speedy drivage. 根据瓦斯流动理论,通过对机械化快速掘进煤巷的考察研究,对瓦斯的涌出来源和规律进行了统计分析;
- Combining with a tunnel construction case,an ordinary method of ascertaining Optimum hole depths in small exploration tunnel drivage is discussed. 结合一坑道施工实例,论述了小型探矿坑道确定最优炮眼深度的一般方法。
- The technology such as drivage, support, doudle-layer sill cut and microcomputer application etc. has been improved to a more or less degree. 在掘进与支护、双层拉底结构及微机应用等工艺技术上有所创新。
- Aimed at the actual situation of single-fin long mining area deep mining,taked the unified planning for the mining,design exploitation varies with subarea and situation of area,substep. 针对大单翼长采区深部开采的实际情况,对采区进行了统一规划,分区、分步进行设计开采;
