资源描述：
《增透技术研究及其应用》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、旋转切片式穿层割缝卸压增透技术研究及其应用水摘要：高瓦斯低透气性煤层卸压增透技术对提高瓦斯抽采效率具冇I•分重要的意义。木文针对冃前我国高瓦斯低透气性煤层普遍存在瓦斯抽采效率低这一关键问题，采用理论研究、数学建模和现场测试相结合的方式，分析了地应力和瓦斯压力对煤层透气性的影响作用，建立了割缝卸压范围内煤体中瓦斯流动数学模型，研究r高瓦斯低透气性煤层卸压增透机理，开发出了旋转切片式穿层割缝卸压增透技术，并且在现场进行了应用。研究结呆表明：旋转切片式穿层割缝卸压增透技术可增加煤体暴鉤面积，冇效提高钻孔周围的煤层透气性，钻
2、孔的抽放瓦斯总量提高2〜3倍，单孔乩斯浓度稳定在50%〜80%,实现了煤层瓦斯快速抽采，降低煤层瓦斯含量，冇效防治了煤与瓦斯突出，巷道掘进速度提高了30-50%,—定程度上缓解矿井采掘接替紧张的局面，具冇广泛的应用前景。关键词：穿层；割缝；卸压增透；透气性；瓦斯抽采TechnologyandApplicationofPressureReliefandPermeabilityIncreasebySlottinginCoalwithRotary-Slice-TypePenetrateLayerAbstract:Thete
3、chnologyofpressurereliefandpermeabilityincreasetohighconcentratedgasandlow-permeabilitycoalscamisofgreatsignificancetoimprovetheefficiencyofgasextraction.Inthispaper,todirectatthekeyissueexistinggenerallyinourcountrythatlowefficiencyofgasextractiontohighconcent
4、ratedgasandlowpermeabilitycoalseam,bycombiningwiththeory,mathematicalmodelingandfieldtesting,analysisstressandgaspressureontheeflbetsofgaspermeability,establishedthegasflowmodelwithinpressurereliefandslottedcoal,researchedpressurereliefandpcnncabilityincreaseme
5、chanismofhighconcentratedgasandlow-permeabilitycoalscam,developedpressurereliefandpermeabilityincreasetechnologybyslottingincoalwithrotary-slice-typepenetratelayer,andappliedinthefield.Theresultsshow:pressurereliefandpermeabilityincreasetechnologybyslottinginco
6、alwithrotary-slice-typepenetratelayercanincreasetheexposedareaofcoalscam,effectivelyenhancescampermeabilityaroundthedrilling,thetotalamountofgasextractionofdrillingincreasedby2to3times,single-drillinggasconcentrationskeepin50%to80%,toachievefastextractionofcoal
7、scamgas,reducecoalgascontents,andcflcctivclycontrolthecoalandgasoutburst,thespeedofroadwayexcavationincreasedby30〜50%,tosomeextentalleviatethetensionofroadwayexcavation,thetechnologyhasbroadapplicationprospects.Keywords:penetratelayer;slotted;pressurereliefandp
8、ermeabilityincrease;permeability;gasextraction我国的煤炭资源总量为5.57万亿吨，石油总资源量为940亿吨，煤层气资源量为35万亿立方米，能源构成具有鲜明的富煤，贫油，少气特征。煤炭占一次能源比重的75%,因此国家制定了坚持以煤炭为主体的能源战略，保证煤矿企业的安全牛产是我国国民经济可持续发展的根木
