平煤十三矿矿井通风系统优化研究

发布时间：2018-06-14 15:47

本文选题：通风系统 + 风量　；参考：《内蒙古科技大学》2014年硕士论文

【摘要】：矿井通风系统是矿井生产的重要系统之一，对井下灾害治理和预防发挥着巨大作用。通风系统优化是保障矿井安全高效生产的有力手段，优化后的通风系统在节能、抗灾变能力等方面有很大提高，进而为矿山企业创造更大的经济效益。本论文以平煤十三矿矿井通风系统为研究对象，采用了理论分析与计算机解算通风网络的综合研究方法，进行了矿井通风参数的收集、通风阻力的测定、通风优化方案的提出及优选、各优选方案通风网络的解算、通风网络图的绘制以及最优通风方案的确定等研究。依据通风系统现状所存在的问题，提出了四个优化方案，从各方案的技术、安全和经济角度进行了详细论述和对比。本论文采用3D Vent通风管理软件对东翼通风系统和经方案三、方案四改造后的通风系统进行了通风网络解算，且东翼通风系统各巷道风量解算结果的相对误差均低于10%，从而证明了所建立的通风巷道模型可用于通风系统的分析，可在此基础上进行通风系统优化探究。通过对方案三、方案四的技术可行性、安全可靠性、经济合理性等指标的讨论和对比，最终选择了方案四。计算机解算结果表明经方案四优化改造后的东翼通风系统总回风量可增加105m3/s，东回风井主扇负压由3881Pa降到2380Pa，风量由179m3/s降到了154.5m3/s；-200回风井新增加主扇负压为1788Pa，风量为129.5m3/s，主要进、回风巷及各个用风地点风量充足且未出现风速超限的情况。经方案四改造后的通风系统可实现己一采区、己一辅助采区、己三采区分区独立通风，消除了东翼通风系统各采区间的角联通风问题，提高了东翼通风系统的稳定性。经方案四改造后东翼通风系统的主扇电机总运行功率由原来的908.1Kw降为811.55Kw，，一年可节约67.66万元电费，给该矿带来了一定的经济效益。由此可见，方案四改造后的通风系统可解决平煤十三矿东翼通风系统风量不足、通风负压过大等问题，为矿井瓦斯灾害治理、高地温灾害防治等工作打下坚实的基础，符合该矿长远规划要求。本课题的技术探究为平煤十三矿东翼通风系统优化改造提供了科学依据，其研究内容具有一定的理论意义和实用价值。
[Abstract]:Mine ventilation system is one of the important systems in mine production, which plays an important role in disaster control and prevention. Ventilation system optimization is a powerful means to ensure mine safety and high efficiency production. The optimized ventilation system has greatly improved in energy saving and disaster resistance, thus creating greater economic benefits for mining enterprises. This paper takes the ventilation system of coal mine in No. 13 coal mine as the research object, adopts the comprehensive research method of theoretical analysis and computer calculation of ventilation network, and carries on the collection of mine ventilation parameters and the determination of ventilation resistance. The research on the proposal and selection of ventilation optimization scheme, the solution of ventilation network, the drawing of ventilation network diagram and the determination of optimal ventilation scheme etc. According to the existing problems of ventilation system, four optimization schemes are put forward. The technical, safety and economic aspects of each scheme are discussed and compared in detail. In this paper, 3D vent ventilation management software is used to calculate the ventilation network of the east wing ventilation system and the ventilation system after scheme 3 and scheme 4. And the relative error of the air volume calculation results of each roadway in the east wing ventilation system is lower than 10, which proves that the established ventilation tunnel model can be used in the analysis of ventilation system, and on this basis, the ventilation system optimization can be explored. Through the discussion and comparison of the technical feasibility, safety and reliability, economic rationality and so on, the fourth scheme is selected. The results of computer calculation show that the total return air volume of the east wing ventilation system can be increased by 105 m3 / s, the negative pressure of the main fan of the east return shaft decreases from 3881 Pa to 2 380 Pa, and the air volume decreases from 179m3/s to 154.5 m 3 / s -200 return air well with a new increase in the negative pressure of the main fan to 1788 Pa. the air volume is 129.5 m3 / s. There is sufficient air volume and no excess wind speed in the return-air lane and each wind-using area. The ventilation system can be ventilated independently in the first mining area, the auxiliary mining area and the third mining area after the fourth scheme, which eliminates the angle connecting wind problem in each section of the eastern wing ventilation system, and improves the stability of the eastern wing ventilation system. The total operating power of the main fan motor of the east wing ventilation system was reduced from 908.1 KW to 811.55 Kw. after the fourth scheme, the electricity cost of 676600 yuan per year could be saved, which brought certain economic benefits to the mine. It can be seen from this that the ventilation system after scheme four can solve the problems of insufficient air volume and excessive negative pressure of ventilation system in the east wing of No. 13 Coal Mine, thus laying a solid foundation for mine gas disaster management and prevention and control of high ground temperature disasters. In line with the long-term planning requirements of the mine. The technical exploration of this subject provides a scientific basis for the optimization and transformation of ventilation system in the east wing of Pingshan No. 13 Coal Mine, and its research content has certain theoretical significance and practical value.
【学位授予单位】：内蒙古科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD724

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