矿井

Coal mine hoist ; low frequency drive system ; intelligent

矿井提升机；低频拖动；智能控制

Expounds that using frequency control system has higher working efficiency , safety reliablity and economic results than using resistance speed control system before in coal mine shaft hoist, and may be clearly overcome a lot of its disadvantages.

阐述采用隔爆兼本安型四象限变频调速系统，可明显克服矿井提升电机采用传统的电阻调速控制中出现的诸多缺点，提高系统的运行效率和安全可靠性，大大提高经济效益。

Based on low frequency drive system of the DPB550/150 Ⅱ type an intelligent control strategy applied to the speed control of AC mine hoist is described and a satisfactory control performance is obtained. Some problems, such as unsatisfactory control performance of AC coal mine hoist in deceleration and low speed drive period, and the difficulty of obtaining the constant deceleration during changing load, are solved.

以DPB－550／150－I型中国矿业大学低频拖动系统为基础，应用智能控制策略，实现了交流提升机的速度控制，得到了较好的恒减速控制性能，解决了矿井交流提升机在减速段和爬行段的速度控制性能较差以及在负载变动时，很难实现恒减速的问题。

The paper introduces a speedy effective way how to solve winch location jump by modifying SD drive control and PLC program after main hoist of panyi coal mine hoists appears depth indication fault.

提升机是矿井主要机电设备之一，确保其安全正常运转，提高工作效率，降低故障影响时间至关重要，文章介绍了潘一主井提升机出现深度指示故障后通过修改SD传动控制及PLC程序解决绞车位置跳变故障的一种快速有效的方法。

Through the application of the company's expertise, experience and its access to advanced surface to inseam drilling technology, and working closely with its Chinese partners, SGE is becoming a significant participant in the development of clean energy projects from the recovery and use of CBM from virgin coal seams and workings coal mines.

我们将同国内外业内人士专家广泛合作，结合本公司煤层气专家在煤层气工作的多年成功经验和先进的地表到煤层的水平钻井技术，专注中国煤层气能源项目开发。我们的目标是从未开采煤层和生产矿井抽放利用煤层气，为中国清洁能源开发利用竭尽全力。

Studied about the influnce of coal-bearing series formed change on the rock mass structure failue and strata behavios.

研究了煤系后生变形对岩体结构的破坏和对采面矿压显现的影响，并指出加强地质研究对矿井设计和支护的重要指导意义。

Application Industries: Because of the performance of Icesnow ice-making machine being widely used, it can be used in supermarket fresh and marine fisheries, aquatic products processing, food processing, hotels chilled, vegetables distribution and preservation, meat distribution and preservation, and concrete mixing works chemical paint, laboratory refrigeration, cooling, etc.

应用行业：爱思诺制冰机的性能广泛，它可应用于超市保鲜、海洋渔业、水产加工、食品加工、酒店冰鲜、蔬菜配送及保鲜、肉类配送及保鲜、混凝土搅拌工程、化工颜料、实验室制冷、矿井降温等行业之中。

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

The diversity of microbial community in acid mine drainage is at low level and samples with similar biogeochemical properties have similar microbial communities.

在古矿井区域酸性矿坑水中微生物群落的多样性很低，生物地球化学特性相近的酸性矿坑水由具有相近的微生物群落组成。

In this paper, the composition and control principle of the automation control system of main drainage pump used in coal mine are introduced.

介绍了一种矿井中央泵房主排水自动化控制系统的组成和控制原理。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。