急倾斜特厚煤层硫化氢涌出规律及控制技术研究

发布时间：2018-07-06 09:10

本文选题：急倾斜煤层 + 特厚煤层　；参考：《煤炭工程》2017年01期

【摘要】：为有效解决急倾斜特厚煤层放顶煤开采硫化氢超限的技术难题,阐述了硫化氢超限对人体健康和设备的危害,介绍了放顶煤开采时硫化氢的涌出规律,着重研究了采煤机割煤速度、放顶煤强度以及采煤机截割顶/底煤及拉溜工序对硫化氢涌出规律的影响,结果表明硫化氢涌出强度随采煤机割煤速度、放煤强度的增加而增多。通过对比分析采用喷洒吸收液和超前预注吸收液等技术措施有效解决了工作面上隅角、回风巷硫化氢超限的难题。在工作面回采过程中,工作面采煤机处硫化氢浓度由77×10-6降至12×10-6;前刮板机上方硫化氢由470×10-6降至62.6×10-6;回风巷硫化氢浓度由110×10-6降至15×10-6,硫化氢灾害治理效果显著,降低了硫化氢气体对人体健康及设备的危害;通过综合协调治理,硫化氢灾害治理技术取得了较大突破。
[Abstract]:In order to effectively solve the technical problem of over-limit of hydrogen sulfide in caving of steep and thick coal seam, this paper expounds the harm to human health and equipment caused by excess limit of hydrogen sulfide, and introduces the rule of hydrogen sulfide emission during caving mining. The influence of coal cutting speed of shearer, top coal intensity, cutting top / bottom coal and drawing process on the rule of hydrogen sulfide emission is studied. The results show that the intensity of hydrogen sulfide emission increases with the coal cutting speed and coal drawing strength of shearer. By comparing and analyzing the technical measures such as spraying absorbent solution and advanced pre-injection absorbent solution, the problem of exceeding limit of hydrogen sulfide in upper corner of working face and return air roadway is effectively solved. In the process of mining, the concentration of hydrogen sulfide in the coal mining machine of the working face decreased from 77 脳 10 -6 to 12 脳 10 -6, the hydrogen sulfide concentration over the front scraper decreased from 470 脳 10 -6 to 62.6 脳 10 -6, and the concentration of hydrogen sulfide in the return air roadway decreased from 110 脳 10 -6 to 15 脳 10 -6. The harm of hydrogen sulfide gas to human health and equipment is reduced, and a great breakthrough has been made in the control technology of hydrogen sulfide disaster through comprehensive and coordinated treatment.
【作者单位】：中煤科工集团重庆研究院有限公司;瓦斯灾害监控与应急技术国家重点实验室;
【分类号】：TD823.2

【相似文献】