采煤工作面通风防治煤尘技术措施探讨

煤炭资源是我国经济生产中重要的能源之一,对我国的经济发展起着重要的促进作用。在煤炭资源的开采过程中会产生大量的煤尘,这些煤尘会对工作人员的身体健康构成严重的威胁。同时,随着社会生产对煤炭资源的需求量增加,越来越多的机械设备的运行给防治煤尘带来更大的挑战。鉴于此,应该加强对煤尘防治技术措施的研究,促使采煤工作更具安全性。从矿井煤尘的相关概述入手,分析了主要的防尘技术措施,来探究采煤工作面通风防治煤尘技术措施的重要性和应用。

采煤工作面通风防治煤尘技术探讨

基于采煤工作面通风防治煤尘技术为核心进行研究,分析了煤矿粉尘对人体的危害,阐述采煤工作面通风防治煤尘技术。内容包含:转载点的通风防治煤尘技术、截割处的通风防治煤尘技术、其他工作面的防治煤尘技术等,以期为推动我国煤炭开采领域发展提供借鉴。

采煤工作面通风防治煤尘技术的分析探讨

煤炭资源开采过程中,粉尘的产生是不可避免的,随着采煤作业难度的增加,多样化机械设备的应用以及转载点数量和巷道距离也会逐渐加长,这对采煤工作面通风煤尘防治工作带来了挑战。因此必须要采取有效措施,加强对采煤工作面的通风,以此来防止煤尘技术,提升采煤的安全性。鉴于此,本文详细探讨了常见的采煤工作面通风防治煤尘技术,以供参考。

关于采煤工作面通风防治煤尘技术的探究

以关于采煤工作面通风防治煤尘技术为研究对象,对煤尘产生特点进行了简单介绍,随后分析了煤尘产生的危害,最后着重对采煤工作面通风防煤尘技术应用进行了研究分析,希望能够为相关研究提供一定的参考。

采煤工作面煤尘防治技术研究与思考

随着煤炭资源的日益枯竭,对煤矿安全生产的要求越来越高。在煤矿生产过程中,煤粉是主要的污染物之一,其排放会对环境造成严重污染和危害。因此,如何有效地控制煤粉的排放成为了当前煤矿安全生产中亟待解决的问题。基于此,本文首先探讨了煤矿粉尘对人体的特点及危害,其次描述了矿山通风防尘技术发展现状,最后研究了采煤工作面防治煤尘的关键技术,希望能够为促进我国煤炭开采业的健康发展提供参考。

综采工作面煤层注水技术实践

山西某矿开采的5号煤层硬度低、赋存不稳、顶板较为坚硬,造成了采面在开采过程中煤尘产生量大、片帮严重、矿压显现明显等问题。该矿采用煤层注水技术缓解了上述问题,并根据采面布置及地质情况合理确定了注水方式、注水工艺以及注水参数。结果表明,采用深孔高压注水后,采面降尘率平均达到65%,超前支承压力峰值降低约38.62%,煤壁片帮问题也得到改善。因此,根据煤层地质条件采用合理的煤层注水技术,对确保采面正常生产、改善采面作业环境等均有显著促进意义。

Image Analysis on Detachment Process of Dust Cake on Ceramic Candle Filter

Based on the analysis of high-speed video images, the detachment behavior of dust cake from the ceramic candle filter surface during pulse cleaning process is investigated. The influences of the dust cake loading,the reservoir pressure, and the filtration velocity on the cleaning effectiveness are analyzed. Experimental results show that there exists an optimum dust cake thickness for pulse-cleaning process. For thin dust cake, the patchy cleaning exists and the cleaning efficiency is low; if the dust cake is too thick, the pressure drop across the dust cake becomes higher and a higher reservoir pressure may be needed. At the same time there also exists an optimum reservoir pressure for a given filtration condition.

防尘标准化对煤矿粉尘防治的促进作用分析

针对我国煤矿粉尘危害和尘肺病发病现状,系统介绍了我国煤矿粉尘防治涉及的领域及应用技术,详细论述了防尘标准化体系所涵盖的内容,深入分析了防尘标准化体系在煤矿防尘领域所发挥的作用,结合当前粉尘危害防治与健康中国发展的新要求,指出了防尘标准化体系在经费投入不足、防尘标准专业人才缺乏、智能化标准制定滞后等方面存在的问题以及今后发展方向。

Simulation of flow-field interior dust removal system at a transit point and the overall technology of dust removal

In order to make a reasonable dry-type dust removal plan of the coal transit spot in a coal washery,it is essential to install the dust removal fan and guide chute.By means of the numerical simulation,the pollution mechanism at a transit point and the flow-field interior dust removal system had been analyzed.The result shows that the dust pollution at transit spot is mainly cased by the joint effort of induced airflow and shock-wave.With the appropriate dust removal fan and the guide chute,will effectively eliminate the positive pressure by gave rise to by the impact of falling coal,also avoid the secondary pollution.

A new design of foaming agent mixing device for a pneumatic foaming system used for mine dust suppression

To overcome the drawbacks of the conventional foam technology used for dust suppression,including large pressure loss,high water pressure and low driving pressure,a new pneumatic foaming system is introduced.Then an original design of foaming agent mixing device is proposed,and its performance is investigated and evaluated under different pressure compensations.Experimental results show that the maximum absorption amount increases by 2.9-6.7 times at a pressure compensation of 0.04-0.2 MPa compared with no pressure compensation.The pressure loss and pressure fluctuation both reduce significantly with increasing pressure compensation.The critical outlet pressure increases by30.4-240%.Field application indicates that the proposed mixing device ensures the reliable addition of foaming agent used for foam dust suppression.The effect of foam on dust suppression is remarkable,and the economic cost of foam is low.Therefore,there is reason to believe that the new mixing device will greatly promote foam technology to be widely used for suppressing dust in underground coal mines.

Application of foam technology for dust control in underground coal mine

In order to effectively control the dust in the underground coal mine,this study proposes and develops a new technology for dust control by foam,and briefly demonstrates the advantage of the foam technology for dust control,such as the good isolation performance,large contact area,high wetting ability,strong adhesion and so on.Besides,the details of the technology are introduced,including the foam agent,foam generator,and foam production process.Then the paper studies the relationship between the foaming agent concentration and liquid surface tension,and explains the principle of the foam generator.The technology is applied in heading face.The application results show that the foam has a remarkable effect on dust control in underground coal mines.

我国煤矿瓦斯防治技术的研究进展及发展方向

在我国一次性能源消费中煤炭一直占主导地位,瓦斯作为煤炭开采过程中的伴生产物,一直是威胁矿井安全生产的主要灾害之一,并且随着煤层开采条件的变化和开采工艺的变革,瓦斯灾害的防治难度不断增大。基于此,着重从瓦斯预测技术、瓦斯抽采利用技术、煤与瓦斯突出防治技术、瓦斯煤尘爆炸防治技术和瓦斯预警与监测监控技术等方面介绍了瓦斯防治技术的最新进展情况,针对现有瓦斯防治技术存在的问题提出了未来瓦斯防治技术的发展设想。