1) slice drift
分层巷道
1.
By applying theoretical calculation and computerized numerical simulation,this article carries out a study on the slicing mining technology used in extra coal seams from the aspects of determination of width of coal pillars in the upper and lower seams,arrangement of slice drifts,arrangement of coal mining equipment withdrawal roadways and the mining methods used in the lower seam,etc.
综合运用理论计算及计算机数值模拟的方法,从上、下分层煤柱宽度确定,分层巷道布置方案,设备撤出巷布置方案和下分层开采方法等方面对特厚煤层分层开采技术进行了研究。
2) lower slicing roadway
下分层巷道
1.
The article analyses specifications of the lower slicing roadways and the supports breakdown causes for the thick coal seams in the Xinzhou Mine of Datong coal mines group Co.
通过对大同煤矿集团公司忻州窑矿厚煤层下分层回采巷道破坏特征、支架损坏原因的分析,提出了下分层巷道安全掘进和回采超前管理的对策。
3) gate-road in the bottom slicing
下分层回采巷道
1.
Study on the affecting factors of rational layout location of gate-road in the bottom slicing;
下分层回采巷道合理布置位置影响因素研究
2.
The following conclusions can be drawn: stress distribution curves in the bottom slicing,and failure process and displacement characteristics of side coal-wall of gate-road in the bottom slicing.
利用非线性有限元数值计算方法,模拟了上分层回采巷道开挖、上分层回采及下分层回采巷道开挖三个过程,经过分析得出了下分层煤体内应力分布曲线、内错式下分层回采巷道两帮煤体破坏过程及两帮位移分布特征;室内相似材料模拟试验结果显示了底板岩层竖直应力分布规律及采空区上覆岩层破坏形式。
4) below lane
下层巷道
5) coal roadway
煤层巷道
1.
The deformation feature of deep shaft coal roadway is analyzed,and the reason for many kinds of support failures is studied.
分析深井煤层巷道围岩变形特征和支护失效的原因,提出此类巷道的内外结构耦合平衡支护原理。
2.
The phenomenon of underground pressure and principle of surrounding rock control of deep shaft coal roadway are introduced.
以平顶山四矿戊九采区下山专用回风下山底鼓控制为工程背景,介绍了深井煤层巷道底鼓特点及其控制原理。
6) seam roadway
煤层巷道
1.
According to the current situation of supporting steep seam roadway,a new bolt-mesh-anchor support technology was put forward.
针对急倾斜煤层巷道支护现状,提出采用锚网索支护新技术对试验巷道进行支护改革。
2.
In view of steeply inclined seam roadway support status quo,with the specific engineering practice problem,used similar material simulation test to have the contrast study on steeply inclined seam roadway applied Isteel support,bolt support and bolt-cable-beam support under same condition.
针对急倾斜煤层巷道支护现状,结合具体工程实践问题,采用相似材料模拟实验,对相同条件下急倾斜煤层巷道采用工字钢支护、锚杆支护和锚(索)梁网支护3种支护形式进行对比试验研究,得出了不同支护形式下的围岩变形规律、以及不同支护形式在急倾斜煤层巷道条件下的适应性及支护机理,从而为急倾斜煤层巷道支护决策提供依据。
补充资料:垂向分层理论
垂向分层理论
stratification theory of grains in vertical direction
ehuix旧ng feneeng Iilun垂向分层理论(stratifieation theory of grainsin vertieal direetion)对重选过程中矿粒群在介质中作垂向分层运动机理的阐释。在重选设备内堆置或铺置的动态矿粒群称作床层。借助介质的垂直流动、沿斜面流动或作回转运动使床层松散,是粒群发生分层转移的先决条件。分层是指矿物粒群按密度差形成不同的矿物层;颗粒的粒度以及形状对分层也有重要影响。对于分层的发生机理,曾经有过多种见解,但归纳起来不外两类观点。一类是动力学分层学说,认为分层是按个别颗粒在介质中的运动差异发生的(见自由沉降速度差分层学说、干涉沉降速度差分层学说);另一类是静力学分层学说,认为分层是粒群整体的内在不平衡因素引发的(见悬浮体密度差分层学说、位能分层学说和重介质分层学说)。前一类学说强调了流体动力对颗粒运动的影响,而忽略了颗粒间的静力作用;后一类学说的立论观点则忽视了流体动力对分层的影响,而将床层内颗粒或颗粒群间的静力差异视为分层的决定性因素。 (孙玉波)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条