毕业设计---瓦斯抽放设计

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1、 摘要 随着矿井生产技术水平的快速发展，矿井生产能力大大提高，但随之而来的矿井瓦 斯涌出大大增加。 矿井瓦斯已成为制约煤矿安全生产的头号大敌。 文家坡煤矿设计产煤 4. 0Mt，该矿矿井瓦斯涌出量大，仅靠通风方法难以解决瓦斯超限问题，从而严重制约了该 矿的正常生产能力。 本文介绍了该井田的基本情况，预测了矿井瓦斯的涌出量，对抽放瓦斯的必要性与 可行性进行了论证。通过对抽放方法的比较和抽放管路的计算和选择，设计了瓦斯抽放 的方法和矿井瓦斯抽放系统。并计算了抽放系统的管道阻力和瓦斯泵的流量与压力，选 择了合适的瓦斯泵型号，建立了地面永久抽放泵站。最后利用所抽瓦斯进行发电，以达 到合理利用瓦斯，使其

2、变废为宝、减少环境污染的目的。 关键词：瓦斯预测、瓦斯抽放、瓦斯抽放系统、瓦斯利用 ABSTRACT With the rapid development of production technology of mine, mine production ca pacity greatly increased, but to greatly increase of mine gas emission. Restricted coal mine safety production of coal mine methane has become enemy number one. Design c

3、 oal 4.0Mt coal mine, the mine gas emission rate, ventilation method of gas concentrati on exceeding limits a hard problem alone, and seriously restricted the normal capacity of the mine. This article describes the situation of mine, prediction of mine gas emission, justif ying the necessity and fea

4、sibility of gas drainage. By drainage method of comparison a nd calculation of drainage pipe and selection, design of gas drainage method and mine gas drainage system. Resistance of pipeline and to computation of drainage systems an d flow rate and pressure of a gas pump, select the right gas pump model, established a permanent ground drainage pumping stations. Last use of gas for power generation, i n order to achieve rational utilization of gas and its treasure, the purpose of reducing e nvir