• 将新下24与新下25层进行分层开采

    Third, To implement layer mining in Xinxia-24 &25 formation.

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  • 本文介绍煤层分层开采存在主要问题解决方法

    This text mainly introduces the main problem existing in the thick coal seam layering mining and the method to solve it.

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  • 介绍在分层开采煤层中条件实现锚杆支护

    In slicing seams, bolt supporting was utilized under false roof and obtained good result.

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  • 最后得出关于采区合理走向长度两种分层开采顺序适用条件结论。

    Finally, we concluded the optimal length of mining section along the strike and the appropriate conditions of application of these two sequences of mining slices.

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  • 新汶矿业集团华丰煤矿分层开采长期以来全部采用金属菱形作假

    There are four layer coal in Huafeng coal mine of Xinwen coal group company, it is mined layer by layer, artificial roof is used by diamond metal net over a long period of time.

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  • 综放开采由于采高加大,导致采场前方顶煤瓦斯渗透性分层开采较大差异

    During mechanical longwall top coal mining, the gas permeability in top coal ahead of working face has bigger difference compared with slice mining due to the increase of mining height.

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  • 综放工作面上覆岩层存在开采层位更高平衡结构变形形式存在。

    There is a balance structure of upper rock layer in higher level compared with the layered extraction, which exists in the form of finite deformation beam.

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  • 针对不同尺寸套管完井,在侧钻井分层开采过程中的配套封堵卡封配套改层工艺

    According to the casing strings of different sizes, converting zone technology including chemical plugging and packer setting is matched during the process of selective zone production.

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  • 通过分层开采两个方案比较计算,功定了适合东荣三矿煤层开采最佳方案。

    Through comparing calculation of two plan which are mining overall height in one times and shise mining, the optimum one suitake for thick coal seam mining in Dongrong No. 3 Coal Mine is determined.

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  • 结果表明,放顶煤采煤支承压力分布形式分层开采类似量值影响范围有增减

    The result indicated That the abutment pressure distribution form was similar to that of slicing mining method but its magnitude and affecting range changed.

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  • 提出了实施分层开采、开展压试验剩余油饱和度高的部位水平井改善油田开发效果措施建议

    Several measures and Suggestions are presented in order to improve development effects in the field, such as making selective zone production, testing water coning and drilling...

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  • 分层开采与综放开采工作面滞后支承压力变化规律是,随着采高增大,工作面滞后支承力距离加大,垂直应力集中系数差别不大。

    The lag distance of abutment pressure behind working face increases, but the convergence coefficient of vertical stress doesn't change obviously with the increase of mining height.

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  • 对于金属矿开采一般认为分层崩落法其他采矿相比一种成本产量木材消耗量采矿方法

    Generally top slicing is a mining method of high cost, low productivity, and large consumption of timber as compared with other methods for mining metalliferous ore bodies.

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  • 运用相似材料模拟数值计算方法,水平分段和倾斜分层顶煤开采引起围岩移动特征进行了比较。

    The rock movement between the horizontal section of the top coal caving and inclined slicing of the top coal caving was analyzed.

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  • 针对采矿技术条件复杂矿脉开采推荐采用有钢筋混凝土的下分层充填采矿

    The underhand slice stoping method, with reinforced concrete for roof support, is recommended to mine narrow veins where the mining technological conditions are very complicated.

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  • 本文提出了在矿床地质模型基础应用CAD技术。建立以台阶为单元的分层矿床开采地质模型的方法

    Based on geological model of deposits and by means of CAD method, the authors put forward the building method of layered opencast mining geological model, whose layers are composed of bench.

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  • 分层胶结充填采矿法矿岩破碎、开采技术条件复杂的难采矿有效的采矿方法

    The underhand slice stoping with cemented filling is the most effective mining method for incompetant orebody with complicated mining conditions.

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  • 分析矿岩性质矿床产状开采技术条件,提出岩层微扰框架式上分层充填采矿技术。

    By the analysis of the mining condition of the deposit, such as the properties of ore and rocks, the inclination of ore bodies, etc.

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  • 根据新立矿区开采技术条件研究确定矿体采用分矿房矿柱分层充填开采

    According to mining condition in Xinli mining area, the room and pillar filling method for large and thick ore-body is determined after research.

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  • 根据新立矿区开采技术条件研究确定矿体采用分矿房矿柱分层充填开采

    According to mining condition in Xinli mining area, the room and pillar filling method for large and thick ore-body is determined after research.

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