高瓦斯矿井孤岛综放采空区遗煤自燃综合防治技术

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1、第6卷第5期中国安全生产科学技术V01．6No．52010年lO月JournalofSafetyScienceandTechnologyOct．2010文章编号：1673—193X(2010)一05—0060—07高瓦斯矿井孤岛综放采空区遗煤自燃综合防治技术吕文陵，杨胜强，徐全，程涛，黄金，何磊(中国矿业大学安全工程学院煤炭资源与安伞_Jf采圜家重点实验室，徐州221008)摘要：针对囤阳二矿高瓦斯白燃煤层综放开采的实际情况，分析了“U+Ⅱ”型孤岛综放面采空区遗煤自燃特点及危险件。利用单元法对孤岛面的漏风状况进行r实测，并通过数值模拟分析了综放采空区内的

2、漏风流场，根据采空区自燃“三带”的渗流风速确定了可能自燃带的范围，表明采区漏风是“u+Ⅱ”型孤岛综放面采空区遗煤自燃的主要危险因素。在此基础上，结合实际情况系统地制定了以有效控制采空区漏风和重点发火区域注胶为主的综合防灭火技术措施，为有效控制综放采空区遗煤自燃，实现矿井高产高效、安全生产提供技术保障。实践表明，运用控制工作面风量与高抽巷负压、均压堵漏、压注胶体防灭火材料及加快工作面推进速度等综合防灭火技术防治高瓦斯矿井“U+Ⅱ”型孤岛综放面采空区遗煤自燃是可行的。关键词：采空区；漏风；孤岛而；综合防灭火技术中图分类号：TD75文献标识码：APrevent

3、ionandextinguishmenttechnologyofspontaneouscombustionforisolatedislandfullymechanizedcavinggoafinhigh-gasmineLVWen—ling，YANGSheng—qiang，XUQuan，CHENGTao，HUANGJin，HELei(ChinaUniversityofMiningandTechnology，SchoolofSafetyEngineeringStateKeyLaboratoryofCoalResourcesandMineSafety，Xuzh

4、ou221008，China)Abstract：Basedonthecharacteristicsof“U+11”typeisolatedislandfullymechanizedcavingfaceinhigh—gasmine，thecharacteristicsanddangerousnessofspontaneouscombustionatthiscoalfacewereanalyzed．Throughtheapplicationofunitmethodtomeasuretheairleakageofface，andusingFluenttosim

5、ulatethegoafflowfield，therangeof“spontaneouscombustionzone’’wasputoutbytherulesofgoaf“ThereZone”flowvelocity．Theresultsshowedthatthemainriskfactorofspontaneouscombustionat“U+H’’typeisolatedislandfullymechanizedcavingfaceistheairleakage．Onthisbasis，integratedpreventingandextinguis

6、hingfiretechnologieseffectbythemainactionofcontrollingtheairleakageandpressingfirepreventiongeltospontaneouscombustionareawereanalyzedcombinedwiththeactualsituationofthespontaneouscombustionin80509isolatedislandfullymechanizedcavingface，includingcontrollingtheairquantityandtheneg

7、ativepressureofsuction，pressurebalancingandpluggingleakagechannel，pressingfirepreventiongelandincreasingdrawingspeedofworkingface．Theresultsshowedthattheintegratedpreventingandextinguishingfiretechnologiesarefeasible，whichcanprovidetechnicalsuppo~forminesafetyproductionandrealizi

8、nghighyieldandhighefficiency．Keywords：go