1) rock strata class V
V类围岩
2) V class surrounding rock
V级围岩
3) classification of surrounding rocks
围岩分类
1.
Visual evaluation of neural network on classification of surrounding rocks for underground engineering;
地下工程围岩分类的神经网络可视化评价
4) rock classification
围岩分类
1.
Based on roadway's conditions and measured information, the stability degree was evaluated and the multi-index rock classification figure was drawn.
利用统计分析、模糊推理等多种手段,提出一种煤巷围岩稳定性综合分类法,研究平顶山矿区煤巷稳定性变化规律,得到了评价围岩稳定性的统计判据,可根据巷道条件及实测信息评价巷道稳定程度,并绘制出多指标围岩分类图,直观表达了样本及样本分布规律,既提高了分类的可靠性,又简化了分类方法。
2.
This paper describes present surrounding rock classification methods used in China and abroad and relationships between these methods.
简要介绍了目前国内外几种围岩分类方法及其相互关系,然后以溪洛渡水电站导流洞为例,具体说明水电工程地下洞室围岩是如何分类的,并对各种分类方法进行了对比。
3.
This thesis takes the roadway supporting of QianYingzi coal mine in WanBei coal group as the engineering background, the study of rock classification of deep well and optimized design of supporting were carried out, it have important Practical significance.
课题以皖北煤电集团钱营孜煤矿岩石巷道为背景,开展矿井岩石巷道围岩分类与支护方案优化技术研究,具有重要的现实意义。
5) surrounding rock type
围岩类型
1.
On the basis of matter element analysis theory, this paper puts forward a matter element model of pattern recognition of excavation surrounding rock type.
基于物元分析理论 ,提出了一种巷道围岩类型模式识别的物元模型 ,实例验证表明该模型具有方法简单有效、结果可靠等特点 ,同时也为其它事物的模式识别开辟了一条新的途径。
6) classification of surrounding rock
围岩分类
1.
Conducts the evaluation of the classification of surrounding rock, and lay down the preventive measurements of geological disaster.
对围岩分类进行合理评价，从而制定围岩不良地质现象的防治措施，对顺利施工和安全使用具有重要意义。
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性质：学名苯乙烯-2-乙烯吡啶共聚物。微黄色粉末或透明小颗粒晶体。无臭，无味。不溶于水，溶于酸、乙醇、丙酮、氯仿。有抗水、防潮性能，适用于多种药片的包衣等。
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CAS号：
性质：学名苯乙烯-2-乙烯吡啶共聚物。微黄色粉末或透明小颗粒晶体。无臭，无味。不溶于水，溶于酸、乙醇、丙酮、氯仿。有抗水、防潮性能，适用于多种药片的包衣等。
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