排序方式: 共有17条查询结果,搜索用时 15 毫秒
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综合分析了新桥硫铁矿的地质及开采现状,指出了建立井下观测网的必要性,并详细介绍了井下岩移观测网的组成,观测站的布置,井下点的制作,制点联测及岩移观测。最后还给出了观测建议,为类似观测网的建立提供了一个范例。 相似文献
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根据岩层物理力学性质、岩体结构和构造、岩体质量指标 RQD、水文地质条件等因素 ,采用 CSIR分类法、Q系统分类法 ,对新桥硫铁矿坑下岩体结构进行调查与质量评价 ,根据调查结果将顶板岩层划分为三个等级 ,对矿山安全生产有重要指导作用 ,可为其它矿山提供借鉴 相似文献
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针对经验公式的局限性,根据松散介质力学的极限平衡理论,提出了与松散介质的内摩擦角φ、粘聚力k、松散介质沿壁面滑动的内摩擦角φ0相关的采场放矿漏斗口临界直径的计算方法。 相似文献
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The initial shear stress (τ) and plastic cohesion (η) are the most important parameters reflecting the rheological properties of the paste slurry. The rheological parameters as well as the quantitative relationship among the consumption of different fill materials were obtained through the experiment and research on these parameters.They can be used to predict the scope of the values of τ and η in production for a given ratio, which can reduce the conveying resistance of fill slurry along the pipelines and avoid the blockage of the pipelines. It is found that the rheological model of the total tailing slurry belongs to the Bingham type, which has a feature of strong internal structure and large initial shear stress. The calculation formula for the resistance loss of pipelines conforms nicely to the field test and the actual production in Jinchuan Nickel Mine. 相似文献
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Rheological properties of tailing paste slurry 总被引:6,自引:0,他引:6
The initial shear stress (τ) and plastic cohesion (η) are the most important parameters reflecting the rheological properties of the paste slurry. The rheological parameters as well as the quantitative relationship among the consumption of different fill materials were obtained through the experiment and research on these parameters.They can be used to predict the scope of the values of r and ηin production for a given ratio, which can reduce the conveying resistance of fill slurry along the pipelines and avoid the blockage of the pipelines. It is found that the rheological model of the total tailing slurry belongs to the Bingham type, which has a feature of strong internal structure and large initial shear stress. The calculation formula for the resistance loss of pipelines conforms nicely to the field test and the actual production in Jinehuan Nickel Mine. 相似文献
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残积红粘土的力学特性试验研究 总被引:1,自引:0,他引:1
通过对某建筑工地地基土的单轴固结压缩和固结不排水三轴剪切试验研究,得出了其地基土—残积红粘土的固结压缩特性,以及原状土和重塑土在不同围压下的破坏形式的变化,主应力差(σ1-3σ)和有效应力比(1σ′/σ3′)与轴向应变ε之间的关系,原状土和重塑土的孔隙水压力和轴向应变ε的关系等一系列的力学特性。 相似文献