38 mm型CO_(2)致裂器内部参数对致裂器做功能力影响  

Impact of internal parameters on the fracturing performance of 38 mm CO_(2) fracturing tool

作　　者：鲁寨军[1,2] 王志富 姚术健[1,2] 钟睦 史湘石[1,2] 陈斐鹏 LU Zhaijun;WANG Zhifu;YAO Shujian;ZHONG Mu;SHI Xiangshi;CHEN Feipeng(School of Transportation Engineering,Central South University,Changsha Hunan 410075,China;Research Center of Advanced Scientific Research on Extreme Fluid Power,Central South University,Changsha Hunan 410075,China)

机构地区：[1]中南大学交通运输工程学院,湖南长沙410075 [2]中南大学极端流动力能前沿科学中心,湖南长沙410075

出　　处：《中国安全科学学报》2024年第9期78-86,共9页China Safety Science Journal

基　　金：国家自然科学基金资助(12272414);湖南省自然科学基金资助(2023RC3045);湖南省科技创新计划项目(2023RC1026);中南大学研究生创新项目(QL20230075)。

摘　　要：为快速获得液态CO_(2)致裂器内部参数对致裂器做功能力的影响特征,优化提高液态CO_(2)致裂器做功能力,提高煤层瓦斯抽采效率,设计液态CO_(2)致裂器做功能力快速评估试验装置。使用煤矿用38 mm型致裂器进行4水平3因素的9组正交试验,分析液态CO_(2)致裂器发热管内部装药量、主管内液态CO_(2)填充量、泄能片厚度以及泄能头释放口径对于致裂器做功能力的影响主次顺序;进一步对其中最重要的影响因素进行固定变量试验,分析最重要影响因素对液态CO_(2)致裂器做功能力的影响特征。结果表明:对于煤矿用38 mm型CO_(2)致裂器,泄能片厚度对于液态CO_(2)致裂器做功能力的影响最大,发热管内部装药量次之,主管内液态CO_(2)填充量及泄能头释放口径影响最弱;液态CO_(2)致裂器做功能力随着泄能片的厚度增加而增加,但当泄能片厚度增加到一定程度时,液态CO_(2)致裂器做功能力增幅不够明显,达到一定厚度泄能片不会破裂,当38 mm型致裂器内部参数设置为CO_(2)质量0.33 kg、释放口径18 mm、装药量60 g、泄能片厚度2.0 mm时致裂器做功能力对应三硝基甲苯(TNT)当量为0.202 kg,相对当前工地使用参数做功能力提升21.9%。In order to swiftly elucidate the influence of internal parameters on the fracturing performance of a liquid CO_(2) fracturing tool and optimize its functionality for enhanced coal seam gas extraction efficiency,a rapid assessment experimental apparatus was designed.A set of 9 orthogonal experiments involving 4 horizontal and 3 influencing factors was conducted utilizing a 38 mm mining-specific fracturing tool.The study analyzed the relative significance of the internal charge quantity in the heating tube,liquid CO_(2) filling volume in the main pipe,the thickness of the fracture plate,and the caliber of the release aperture on the fracturing tool's performance.Furthermore,pivotal influencing factors were subjected to fixed-variable experiments to explore their impact patterns on the fracturing performance of the liquid CO_(2) fracturing tool.Results indicate that,for the 38 mm mining-specific CO_(2) fracturing tool,the thickness of the fracture plate exerts the most substantial influence on the fracturing tool's performance,followed by the internal charge quantity in the heating tube.The impact of the liquid CO_(2) filling volume in the main pipe and the caliber of the release aperture is comparatively weaker.The fracturing performance of the liquid CO_(2) fracturing tool gradually stabilizes with an increase in the thickness of the fracture plate,reaching a point where the plate does not rupture.When the internal parameters of the 38 mm fracturing tool are set to a CO_(2) mass of 0.33 kg,a release caliber of 18 mm,a charge quantity of 60 g,and a fracture plate thickness of 2.0 mm,the tool's fracturing performance corresponds to a TNT(Trinitrotoluene)equivalent of 0.202 kg which is enhanced by 21.9%compared to the current on-site parameters.

关 键 词：CO_(2)致裂器 内部参数 做功能力 液态CO_(2)填充量 发热管内部装药量 泄能片厚度 泄能头释放口径 

分 类 号：X924.2[环境科学与工程—安全科学]