1) sublevel caving step_distance
综放步距
1.
A formula for calculating the sublevel caving step_distance is given.
结合实际分析了顶煤放出过程中矸石混入的特点，在此基础上给出了综放步距的计算式，并应用于潞安矿务局３号煤层综放工作面，对综放开采参数优化有所裨益。
2) drawing interval
放煤步距
1.
The effects of different drawing intervaland top-coal fragmental size on flow character of coal-gangue and sand,and on mixed degree of coal and gangue were analyzed during drawing top-coal.
分析了不同放煤步距、顶煤块度对放煤过程中煤矸砂流动形态、混矸程度的影响。
2.
Feasible drawing interval is the basis to study mining equipment of fully-mechanize coal mining with caving method.
综放开采的合理放煤步距是研制综放工作面成套技术装备的基础,是提高综放工作面采出率与煤质的关键之一。
3.
Through observing on spot in compound mining face,the activity rule of roof coal is analyzed,the reason of roof coal crushing and distribution state are summrised,the reasonable drawing interval and questions noticed in roof and floor mannge are provided.
通过对综放工作面的现场观测 ,分析了顶煤的活动规律 ,总结出顶煤破碎的原因及分带情况 ,并提出合理的放煤步距及工作面顶底板管理中应注意的问
3) Drawing pace
放矿步距
1.
The paper gets every sublevel recovery index of diversity structure parameter through multitude sublevel drawing experiment in the condition of diversity drift interval and drawing pace.
通过不同进路间距、不同放矿步距下的多分段放矿实验,得到了各结构参数下的各分段回收指标,并用 Matlab 编程对分段回收指标与结构参数的关系进行了回归分析,得出了岩石混入率、纯矿石回收率、回收率与分段、放矿步距、进路间距之间的回归方程,阐明了不同分段结构参数对回收指标的影响。
2.
A 3dimensional model experiment was therefore carried out in lab with the intention of determining such constructional parameters as drift intervals and drawing pace to meet the mining requirements after the sublevel height has been up to 125?m.
5m·为确定与分段高度相对应的进路间距和放矿步距,对小官庄铁矿分段高度加大到12。
3.
Combined with the Xishimen Iron Mine sublevel caving mining situation and the drawing simulation experiment,this paper analyzed the rock and ore moving process in drawing and caving,dexcribed the relationship between the drawing pace and mixed rock amount.
:本文结合西石门铁矿无底柱分段崩落法开采情况及放矿模拟实验 ,对覆岩下放矿崩落矿岩移动过程进行了分析 ,论述了放矿步距与岩石混入量的关系。
5) full-mechanized caving mining
综放
1.
Based on detection and analysis of damage characteristics of overlying strata and roof status of Meihe 4th Mine and aided by DEM numerical simulation,displacement and damage situation of roof and floor of the lower slice full-mechanized caving mining in different roof conditions were obtained.
通过对梅河四井溃泥工作面覆岩破坏特征和顶板岩层状态的探测分析,结合离散元数值模拟手段,模拟了不同状态顶板条件下水平分层综放开采的顶底板位移场和破坏场,探索了溃泥、溃砂发生的成因和机理,丰富了水体下采煤的理论和技术体系。
2.
Based on the geological and mining conditions and occurrence characteristics of loose aquifer of Xinglongzhuang Colliery,water bursting cause of 4303 full-mechanized caving mining face under loose aquifer was analyzed,the prevention measures of the 3rd aquifer and reasonable dimension of coal pillar for sand proof were discussed in this paper.
根据兴隆庄煤矿地质采矿条件,结合松散含水层赋存特征,分析了四采区4303综放工作面第四系松散含水层出水的原因,探讨了防治三含水的技术途径和留设防砂煤柱的合理尺寸。
3.
Underground pressure behavior rules were obtained by observation of working resistance of supports,stress of surrounding rock and movement of top coal in full-mechanized caving mining face in Anjialing 1st Mine,which provided foundation of safe and high-effect mining for full-mechanized caving mining face in shallow buried and extremely thick coal seam.
通过对安家岭一号井综放工作面支架工作阻力、围岩应力、顶煤活动等的实测研究,得出了综放工作面矿压显现规律,为实现浅埋深特厚综放工作面安全高效回采提供了依据。
6) fully mechanized caving
综放
1.
Practices and experiences on fully mechanized caving tech. in relatively thinner thick coal seam;
较薄厚煤层综放实践与认识
2.
The unbalance abnormal gas burst with fully mechanized caving method in very soft inflammable and very thick outburst coal seam is main technical puzzle.
瓦斯不均衡异常涌出是极软易燃特厚高瓦斯突出煤层综放开采的主要技术难题,本文提出的"来压倍增"的认识以及采用顶板巷排放瓦斯的实践,成功地防治了综放工作面上隅角及回风巷和顶板巷瓦斯超限问题。
3.
1303 fully mechanized caving face annually producing 6 million tons of coal in Dongtan Colliery,Yanzhou Mining Group Co.
针对兖矿集团东滩煤矿年产600万t 1303综放工作面实际情况,进行了工作面尘源分析,并基于风流紊流的三维k-ε流动方程组模型,应用控制容积法和计算流体力学(CFD)的SIMPLE(压力耦合方程式的半阴解法)方法,对工作面断面粉尘流场的浓度和流线进行了ANSYS数值模拟,然后根据支架喷雾降尘用喷嘴的性能实验,优选了安设到综放液压支架上的喷嘴类型,最后提出了1303综放工作面支架喷雾降尘装置的优化设计方案。
补充资料：北园篱外放步
【诗文】：
北园西出路逶迤，荆作门扉枳缚篱。
锄麦正忙人满野，营巢未定鹊争枝。
招呼父老尝新酿，约束儿童筑坏陂。
遇兴闲行便终日，隔溪绩火已参差。
【注释】：
【出处】：
北园西出路逶迤，荆作门扉枳缚篱。
锄麦正忙人满野，营巢未定鹊争枝。
招呼父老尝新酿，约束儿童筑坏陂。
遇兴闲行便终日，隔溪绩火已参差。
【注释】：
【出处】：
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