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Title
Feasibility Study on CO Negative Pressure Drainage in Low Metamorphic Coal Seam Working Faces
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作者
路宁师吉林王永敬
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Author
Lu Ning;Shi Jilin;Wang Yongjing
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单位
国网能源哈密煤电有限公司大南湖一矿中煤科工集团沈阳研究院有限公司煤矿安全技术国家重点实验室
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Organization
State Grid Energy Hami Coal Power Co., Ltd.
China Coal Science and Engineering Group, Shenyang Research Institute Co.
State Key Laboratory of Coal Mine Safety Technology
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摘要
为了解决低变质煤层工作面回风隅角CO超限问题,在大南湖一矿利用引排风机进行了回风隅角CO负压引排可行性验证试验。试验证明抽放治理CO超限是可行的,据此设计了大南湖一矿负压引排系统,并提出了回风隅角CO负压引排无分支插管引排和多分支插管引排两种引排方法。经现场应用,回风隅角CO浓度由1.2×10-4以上降至2.4×10-5以下。
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Abstract
In order to solve the problem of CO exceeding the limit at the return air corner of the low metamorphic coal seam working face, a feasibility verification test is conducted on the negative pressure exhaust of CO at the return air corner using an exhaust air fan in Dananhu No.1 Mine. The test proves that the extraction and administer of CO exceeding the limit is feasible. According to this, a negative pressure exhaust system is designed for Dananhu No.1 Mine, and two exhaust methods are proposed: the negative pressure exhaust of CO at the return air corner without branch intubation exhaust and multi branch intubation exhaust, after on-site application, the CO concentration at the return air corner decreased from 1.2×10-4 above to 2.4×10-5 below.
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关键词
低变质煤层回风隅角负压引排可行性验证CO超限
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KeyWords
low metamorphic coal seam; return air corner; negative pressure drainage; feasibility verification; CO
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文章目录
1 矿井概况
2 回风隅角CO负压引排可行性验证
2.1 初次验证
1）试验方案
①试验过程
②监测点布置
2）试验效果
2.2 二次验证
1）试验方案
①试验过程
②观测点布置
2）试验效果
3 回风隅角CO负压引排系统设计[8-10]
3.1 回风隅角CO引排风量
3.2 回风隅角CO引排管路
1)CO引排管路直径
2)CO引排管路阻力
3.3 CO引排泵选型
3.4 回风隅角CO负压引排方法
1）无分支插管引排
2）多分支插管引排
3.5 现场应用效果
4 结论
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DOI
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引用格式
路宁,师吉林,王永敬.低变质煤层工作面CO负压引排可行性研究[J].山东煤炭科技,2023,41(06):98-100.
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相关文章
山东煤炭科技 
2023年第06期 
