• 文章介绍了回采工作面的方法

    This paper introduces the method of slope adjustment of stope face.

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  • 本文简介堆积型锰矿床矿体回采工作

    This paper described briefly the stoping work of remnant orebody in accumulative manganese deposits.

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  • 介绍回采工作面上瓦斯积聚处理方法

    It introduced the methods of dealing with gas accumulation in the upper corner of stope face.

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  • 提出一种回采工作过上山采空区原位技术

    Technology on retaining roadway on original site in goaf after coal mining face crossing rise is put forward.

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  • 回采工作下行通风我国许多地方不同条件使用

    The stope downward ventilation technique has been used under different conditions in many places of our country.

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  • 煤层顶板稳定性影响煤层回采工作安全重要因素之一

    The stability of seam roof is one of the most important factors that influences the safety of coal extraction.

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  • 煤层顶板稳定性影响煤层回采工作安全重要因素之一

    The stability of seam roof is one of the most important case that influences the safety of coal extraction.

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  • 深入探讨复合煤层回采工作“松动放炮”落煤工艺问题。

    This paper goes further into the blast-winning technology of the composite coal seam face.

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  • 回采工作瓦斯超限现象经常发生煤矿安全生产带来重大隐患

    The phenomenon of gas exceeding the limit usually occurs in working face brings heavy hidden danger to the production safety in coalmines.

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  • 介绍了兖州矿区煤层开采回采工作装备情况生产管理方面几点经验

    The paper states the equipment status in mining faces and experience of producing management in Yanzhou Coal mining area.

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  • 采空区上部预留矿柱回采工作影响整个矿山安全生产采矿方法及其实施

    Mining the ore in pillars above the mine-out area comes down to the security of production, mining methods and putting in practice.

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  • 守恒原理出发,导出描述矿井回采工作面风流紊流流动温度分布微分方程

    According to the principle of conservation, differential equation which can describe airflow temperature distribution in state of turbulent flow in mine working face is deduced.

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  • 提出关键概念,指出回采工作面矿压显现程度主要受主关键层破断的影响

    The idea of key stratum pressure is put forward, and the ground pressure is mainly influenced by the breakage of key stratum.

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  • 提出关键概念,指出回采工作面矿压显现程度主要受主关键层破断的影响

    The idea of key stratum pressure is put forward, and the ground pressure is mainly influenced by the breakage of key.

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  • 回采工作采空区漏风对于采空区遗自燃发火和采空区瓦斯分布及其涌出重要的影响

    Air leakage from coal mining face to gob has great influence on gas distribution and emission as well as spontaneous combustion in waste.

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  • 由此得出,降段移动抽放结合方法是高瓦斯矿井回采工作瓦斯治理有效方法

    We can conclude that the method that unites lower-sect coal stack method and mobile drainage method is an effective measure in the control of gas in the working face of high gas mine.

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  • 针对复合煤层回采工作煤炭生产过程爆破参数合理选取问题,进行一系列现场试验

    To counter the reasonable selection of blast parameters in the process of coal production in a composite coal seam face, a series of on-the-spot tests were conducted.

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  • 我国华北煤矿区,回采工作煤层底板突水问题相当严重,困扰着煤矿经济效益正常发挥。

    Water inrush from the bottom coal layer in mining work faced now is rather serious in Northern China coalfield, which constraints seriously the normal economical benefits.

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  • 煤层三角形区域布置回采工作面,利用工程数学优化工作设计,最大限度回采煤炭

    Assign face scope at triangle coal seams, make use of engineering mathematics, optimize face designs to mine coals to the maximum.

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  • 通过现场观测数值模拟分析系统研究断裂结构面对回采工作分布和顶板稳定性影响

    By using field observation and numerical simulation method, the influence of fracture structure plane on the underground pressure and the roof stability of working face are systematically studied.

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  • 针对曲江回采工作温度顶板破碎等特征,采用“见四放方式管理顶板,取得好的成效

    The paper introduces a new way of roof management by analyzing the high temperature, fragile roof in the working surface in Qujiang which has obtained a better result.

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  • 富强煤矿回采工作面推广使用单体支柱加长一次回采工艺取得明显经济社会经济效益

    Fuqiang Coal Mine adopts mining full height actual process by adding the length of single prop once has made obvious economic and social benefit.

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  • 实践应用表明C4煤层复合顶板得到了有效控制解决了复合顶板条件回采工作面的顶板控制问题

    The practices showed that the complex roof of C4 seam was effectively controlled. Therefore the roof control problem of the coal mining face under the complex roof conditions was solved.

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  • 最后根据回采工作面的基本条件,试算了两类煤的顶板离层临界值与实际观测数据进行了对比分析。

    Finally, a calculation example was showed, and the results indicated that the roof separation critical value of gob-side roadway is more than that of solid-coal roadway.

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  • 空场回采工作利用采场上方岩层支撑自身重量所以采场被切割一系列分隔矿柱支撑的峒

    In open stopes the ground above the stope will support its own weight. So the stope is shaped like a series of rooms divided by walls or supported by pillars of ore.

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  • 初步给出了局部冒顶监报指标确定方法;重点探索了采用回采工作综合判断指标来预报顶板来压的可能性

    The method of determining the index for predicting local roof fall has been given, the possibility of using a comprehensive index for roof weighting prediction has been discussed in detail.

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  • 煤层岩层组成、长壁回采工作面覆岩活动规律、煤层埋藏深度作为埋煤层开采界定指标,论证指标合理取值。

    The reasonable definitional feature of shallow coal seam is analyzed base on the overlying strata's composition, the activity law long-wall mining'soverlying layers and the depth of coal seam.

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  • 脉冲通风条件分析了回采工作面上积聚区内瓦斯运移物理过程,建立了隅角积聚区瓦斯运移的动力学模型

    Under the condition of pulsed ventilation, the physical process of gas transport in the upper corner of mining face is analyzed, and the dynamic model of gas transport is set up.

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  • 介绍了济宁二号复杂地质条件综放工作断层技术掘进回采断层处理方法回采工作面制定过断层方案的步骤。

    The technology of crossing over fault, drifting and actual mining method and plan of crossing over fault at combined mining face under complex geology conditions in Jining no.

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  • 介绍了济宁二号复杂地质条件综放工作断层技术掘进回采断层处理方法回采工作面制定过断层方案的步骤。

    The technology of crossing over fault, drifting and actual mining method and plan of crossing over fault at combined mining face under complex geology conditions in Jining no.

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