查询词典 data mining

This article take 9309 coal mining face in some mine as an example, through the analysis mine heat source, uses the airflow temperature forecast model, had forecast the distribution of airflow temperature in coal mining face and two cross heading channels, and has carried on the contrast with the measured results.

本文以某矿9309工作面为例，通过分析矿井热源，利用工作面风温预测模型，预测了工作面和两顺槽的风温分布，并与实测结果进行了对比，结果表明热源分析结合风温预测能对工作面的热害程度进行准确预测，这对于矿井通风设计及局部降温设计具有重要意义。

Directed at complete study on the law of the overlying strata and the characteristics of stress distribution on mining in steeply dipping seams,this paper is focused on research on the law of overlying strata and the stress variation characteristics by simulating the exploitation of the fully mechanized coal mining face in steeply dipping seam of Xinzhuangzi mine.

为了全面研究大倾角煤层开采上覆岩层垮落特征和围岩应力分布规律，运用相似材料模拟新庄孜矿大倾角综采工作面的开采，研究开采后大倾角工作面上覆岩层移动规律及应力变化特征。

The study of impact of dirt band on top coal drawing mining;2. The paper has studied the caving characteristics and technology on the fully-mechanized caving mining working face in structural complex thick seam containing dirt band are studied.

通过对综放工作面含夹矸结构复杂段顶煤放出特征和放煤工艺的研究，提出选择两刀一放单轮间隔放煤方式，有利于提高煤炭回收率，降低原煤含矸率。

By using of dynamic fuzzy group method, the top coal cavability was evaluated according to the following seven factors, such as coal seam strength, mining depth, crack developing extent's features, dirt band height, filling situation of goaf, classification of main roof and the ratio of mining and caving height etc.

运用动态模糊聚类方法，以煤层强度、赋存深度、节理裂隙发育程度、夹矸厚度、采空区充满程度、老顶级别、采放比等7个因素按模糊最大隶属度原则综合评价顶煤冒放性。建立了模糊聚分析方法的数学模型，以上述7个指标为基础，对顶煤冒放性的模糊聚类分析进行运算，给出分类的实施过程。潞安矿区顶煤冒放性分类结果表明， 5对主要生产矿井主采3号煤层，其顶煤冒放性皆为好和较好，经潞安矿区综放开采实践证实，分类合理

In accordance with the characteristics of coal mining main drainage pump and present state of control and measurement technology,this paper introduces a kind of modularized control and measurement system for coal mining main drainage pump .

针对煤矿主排水泵的特点和当前测控技术的发展，介绍了一种模块化的煤矿井下主排水系统计算机监控系统。

Rock and ore separate mining technique in drift driving was tested and studied, which reduced the high dilution rate of by? product ore in seam mining in gold enterprise, improved crude ore grade, increased gold output, and obtained good economic benefit.

试验研究了沿脉巷道掘进岩矿分掘技术，解决了黄金企业极薄矿脉开采沿脉掘进副产矿石贫化大的难题，提高了出矿品位，增加了黄金产量，创造了很好的经济效益。

As for these topics, a number of high-level addressers in the fields of mining investment and financing at home and abroad are invited to deliver speeches over issues of the mining capital market and investment.

关于这些议题，大会邀请了众多在矿业投资和融资领域的国内外高水平的发言人，他们会围绕关于矿业资本市场及投资问题发表演讲。

Philippine gold mines and the impact of mining of compound exists in the form, the main mining areas in Baguio, Paracale, Masbate, Surigao, and Masara.

菲律宾金矿以复合矿和冲击矿形式存在，主要矿区在Baguio， Paracale， Masbate， Surigao 和Masara。

The mining methods: a full size mine gallery, displays of river dredging by genuine 'bantams' from the Val River in South Africa, mine drilling machines and a unique model of the worlds first sub-sea mining machine NamSSol, showing, at the entrance of the ground floor, how diamonds are extracted from nature

在第一层的入口处展示了钻石矿的开采方法：一个真实大小的矿井坑道，显示了南非瓦尔河的真实的砾岩河底挖掘的情形、矿山钻孔机，以及世界上第一台海底采掘机的模型，展示了钻石是怎样从自然界中提取出来的。

Last, the evaluation index systems and evaluation methods were applied in the Tie Fa mining areas, and based on the evaluation result, corers pounding counter-measures for enhancing the sustainable development capacity of the mining areas are discussed.

为了增强可持续思想在研究和制定发展战略中的指导作用，就必须将矿区可持续发展目标具体化，即用一些可测量的定量指标将其明确地表征出来，并构成指标体系，对矿区可持续发展水平进行定量分析与评价，从而为矿区发展政策的制定提供定量支持。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。