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- This paper presents some concrete countermeasures by analyzing ore rock stability for pillar keep, mining series and multistage mining method of large tractmining secondary project. 本文对二期工作大面积开采范围的矿柱留设、开采顺序、多阶段开采等问题,通过矿岩稳定性分析提出了具体的对策。
- Weak intercalation is the main weak surface which controls the rock stability. 软弱夹层是控制岩体稳定性的主要弱面。
- The large span large section of the roadway surrounding rock stability analysis supporting the proposed overall idea. 通过对大断面大跨度巷道围岩稳定性的分析,提出了支护的总体思路。
- Utilize sample apt to examine judging quota can set up the rank of ore rock cavablity by using BP neural network analysis ; solve the hierarchical precision problem of cavablity with bore informing. 利用样本中易测评判指标建立矿岩可崩性bp神经网络分析模型进行矿岩可崩性分级,解决了用钻孔资料进行矿岩可崩性分级精度不高的问题。
- Direct to the shortage existing in the classification of surrounding rock stability,provide a new method. 针对目前围岩稳定性分类方法存在的不足,给出一新的分类法。
- The ore dilution takes second place.When ore drawing is proportional by three drawing points, ore rock interface is short and dropped parallelly.The dilution and loss index are the fewest among them. 采用左中右三个出矿口均衡放矿时,矿岩界面最短且近似平行下降,矿石贫化与损失最少。
- Lingzikou Tunnel is located at 30 km north-east of Shaotong city in Yunnan Province, the adjoining rock stability analysis and evaluation. 根据勘察资料对位于云南省昭通市北东约 3 0 km处凌子口隧道围岩的稳定性进行分析评价。
- Bifurcated tunnel is one of the new type tunnels, the excavation way and support style are key factors to the rock stability. 摘要分岔隧道是一种新型的隧道结构形式,其设计方案、开挖支护方法对围岩稳定性至关重要。
- In this paper,FLAC is adopted to simulate the surrounding rock stability of a belt drive conveyor cavern of Yangquan mine district during excavation and support by steps. 运用有限差分数值计算软件(FLAC),模拟分析了阳泉三矿芦南分区胶带驱动机硐室在分步开挖过程中围岩的稳定性。
- The result shows that the gap between stowing and roof and the stowing width are two main effects on the surroundings rock stability in partial backfill style. 研究结果表明,充填空顶间隔大小、充填条带宽度是部分充填开采围岩稳定性的两个主要影响因素。
- THE CRATER TEST ON THE HARD ORE ROCK 极难爆矿岩爆破漏斗试验研究
- Based on a comprehensive review of existing evaluation methods for rock stability, the universal relative inelastic displacement ratio was chosen as rock stability criterion. 摘要在综合评价现有岩体稳定性评判方法的基础上,选用普适性较好的弹塑性位移相对比值判别方法作为岩体稳定性的判据。
- heterogeneous ore rock mass drawn 非均匀矿岩散体
- Analyses that system mechanization caving mining roadway is the whole coal and was beared stress complex.Discusses the important meaning for studing its roadway surround rock stability. 分析了综采放顶煤回采巷道为全煤巷道,并且所受应力复杂,阐述了对该巷道围岩稳定性研究的重要意义。
- The ore is smelted in this large factory. 这个大型工厂里熔炼矿石。
- First, ore is mixed with coke and limestone. 先把铁矿石和焦碳、石灰石混合在一起。
- The rocks stability is restricted by a lot of factors.Its classification belongs to non-determinacy decision-making problem. 摘要围岩稳定性受众多因素制约,其分类属于非确定性决策问题。
- Fuzzy Classification of Ore Rock Orientation by Neural Network 应用神经网络对矿岩的倾向性进行模糊分类
- We will make an assay of the ore that he brought. 我们将对他带来的矿石做实验鉴定。
- Study on the Non-uniformity of Loose Body of Ore Rock 矿岩散体的非均匀度研究