矿井通风系统设备选型 - 图文

矿井通风系统设备选型与经

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目录

第1章 矿井生产及通风安全概况·········································1

1.1 矿井煤层煤质及生产概况·······································1 (一)矿井煤层煤质概况···············································1 (二)矿井井型及开拓方式·············································2 1.2 矿井通风安全概况·············································3 第2章 采区通风系统··················································5

2.1 采区进回风上、下山的选择·····································5 2.2 采煤工作面进风巷与回风巷布置·································5 第3章 矿井需配风量的计算············································9

3.1 采煤工作面风质要求与风量计···································9 (一) 采煤工作面风质要求··········································9 (二) 回采工作面需风量计算·······································10 3.2 掘进工作面风质要求与风量计算·································12 (一)掘进工作面风质要求···········································12 (二)掘进工作面风量计算···········································13 3.3 独立通风硐室风量计算·········································14 (一)《煤矿安全规程》中有关规定···································14 (二)独立通风硐室需风量计算·······································15 (三)其他巷道所需风量计算·········································16 3.4 矿井总风量的计算·············································16 第4章 矿井通风总阻力计算············································17

4.1 井巷通风阻力计算·············································17 井巷通风阻力的计算原则···········································17 4.2 矿井总阻力的计算方法·········································17 (一)矿井阻力的计算 ·············································17 (二)降低井巷摩擦阻力的意义和措施·································22 (三)矿井等积孔···················································23

第5章 矿井通风设备选择··············································25

5.1 矿井通风设备选择要求·········································25 5.2 矿井主要通风机选型···········································25 (一)风机风量·····················································25 (二)通风机风压···················································26 (三)通风机的型号与转速确定·······································27 附图：2K60－NO.24型(叶片数为16)矿用轴流式通风机的特性曲线

5.3 电动机的选择·················································27 (一)电动机种类及台数的选择·······································27 (二)电动机选型参数的计算·········································28 第6章 矿井通风费用概算与安全措施····································29

6.1 吨煤通风费用计算·············································29 6.2矿井安全生产技术措施··········································29 (一)矿井瓦斯·····················································29 (二)矿井火灾·····················································32 (三)矿井水灾防治·················································35 (四)粉尘防治·····················································36

总结与致谢·························································38 参考文献···························································39

第1章 矿井生产及通风安全概况

1.1 矿井煤层煤质及生产概况

（一） 矿井煤层煤质概况

该矿地处平原,地面标高+150m，井田走向长度5㎞，倾斜方向长度3.3㎞。井田上界以标高-165m为界，下界以标高-1020m为界，两边以断层为界，井田内煤层赋存稳定，井田可采储量1.08亿吨。根据开采条件、煤炭供求状况及“规程”规定，确定此矿为年产150万吨大型矿井，服务年限为72年。井田内有两个开采煤层，为K1、K2，在井田范围内，煤层赋存稳定，煤层倾角15o，各煤层厚度，间距及顶底板岩性见综合柱状图1—1。

综合柱状图1—1

(二) 矿井井型及开拓方式

矿井为立井多水平上下山开拓，第一水平标高—380m，倾斜长为825×2m，服务年限为27年，因走向较短，两翼各布置一个采区，工作面采用后退式开采。每个采区上山部分和下山部分各分为五个区段回采。每个区各布置一个综采工作面和一个高档普采工作面，工作面长度150m，区段平巷及区段煤柱15m，综采工作面产量为在K1煤层时为1620吨/日，在K2煤层时为1935吨/日，日进6刀，截深0.6m，高档普采工作面产量为在K1煤层时为1080吨/日，在K2煤层时为1290吨/日，日进4刀，截深0.6m，东翼还另布置一个备用高档普采工作面。部分巷道的名称、长度等特征参数见表1—1，综采工作面装备的部分机电设备如表1—2。

部分巷道名称、长度、支护形式，断面几何特征参数表1—1

编号 1 2 3 4 5 6 7 井巷名称 副井井筒 井底车场及主石门 井底运输大巷 采区下部车场 轨道上山 运输机上山 综采区段进风平巷 支护形式 混凝土 锚喷 锚喷 锚喷 锚喷 锚喷 U型支架 断面(m2) 35.8 14.2 12.8 12.8 10.1 9.6 9.6 周长(m) 21.90 10.4 13.6 13.6 12.0 11.8 12.9 1

8 9 10 11 12 13 14 15 16 17 18 综采区段回风平巷 液压支架工作面 高档普采工作面区段进风平巷 高档普采面区段回风平巷 高档普采面 高档普采备用进风平巷 区段平石门 采区回风石门 风井 总回风平巷 风硐 U型支架 钢轨支架 钢轨支架 液压支柱 钢轨支架 锚喷 锚喷 混凝土 锚喷 混凝土 9.6 7.80 9.6 9.6 9.4 9.6 10.28 10.08 12.8 9.62 12.9 11.95 12.9 12.9 11.0 12.0 12.4 12.4 13.6 11.70

综采工作面部分机电设备一览表1—2 序号 1 2 3 4 5 地点 工作面 工作面 下顺槽 下顺槽 工作面 机械设备名称 MLS3——170双滚筒采煤机 SGW——250型溜子 S2Q——75型转载机 SD——160运输机 KBY——62矿用支架防爆重光灯 容量(千瓦) 170 125×2 75 150 0.062×10

1.2 矿井通风安全概况

矿井通风系统基本状况

矿井拟采用两翼对角式通风。

矿井主要通风机的通风方式有抽出式、压入式和混合式。目前，由于技术革新，通风机的功率有了很大的提高，因此，常用的通风方式是抽出式和压入式两种，混合式通风应用较少。因此，通风方式从抽出式和压入式中选择一种。两者的技术比较见表1—3。

工作方法 抽出式 压入式

应该自己去查查 应该自己去查查 应该自己去查查 优点 缺点 应该自己去查查 2

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