文献类型：期刊文献

中文题名：含炭吸收剂的液氧瞬态相变膨胀气体传播规律及强度特性研究

英文题名：Propagation and intensity characteristics of expansion gases from transient phase change of liquid oxygen with carbon-containing absorbents

作者：王雁冰 刘玉晨 魏正 雷振 宋家旺 张小军 孟祥栋 孟令天

第一作者：王雁冰

机构：[1]中国矿业大学(北京)力学与土木工程学院,北京100083;[2]内蒙古康宁矿业股份有限公司,内蒙古鄂尔多斯017000;[3]贵州理工学院矿业工程学院,贵州贵阳550025;[4]北京工业大学建筑工程学院,北京100124;[5]北京科技大学金属矿山高效开采与安全教育部重点实验室、土木环境学院,北京100083;[6]重庆建工集团股份有限公司建筑产业技术研究分公司,重庆400084

第一机构：中国矿业大学(北京)力学与土木工程学院,北京100083

年份：2026

卷号：11

期号：2

起止页码：299-309

中文期刊名：矿业科学学报

外文期刊名：Journal of Mining Science and Technology

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(52574184);中央高校基本科研业务费专项资金(2025 JCCXLJ 01)。

语种：中文

中文关键词：液氧相变膨胀气体;高速纹影;超压测量系统;气体前驱;含炭吸收剂

外文关键词：expansion gases from transient phase change of liquid oxygen;high-speed schlieren;overpressure measurement system;gas precursor;carbon-containing absorbent

摘要：针对不同含炭量吸收剂对液氧瞬态相变膨胀效果的影响问题,设计了含炭量分别为0、0.1、0.2 g的3种液氧药包,借助高速纹影系统与超压测量系统对液氧瞬态相变膨胀产生的气体前驱和相变产物在纹影流场中的传播规律以及相变气体压力的强度变化开展对比分析,并将理论分析与实验结果相结合,得到相变气体在空气流场中传播规律及演化过程和压力分布特性。研究结果表明:(1)含炭量对相变膨胀特性调控显著,随着含炭量从0增至0.2 g,起爆时间从1.32 ms延长至3.69 ms,累压时间增加180%;(2)气体前驱传播速度大幅提升,水平方向最大速度从473.96 m/s提升至692.71 m/s,垂直方向最大速度从875.00 m/s增至1 604.17 m/s;(3)超压峰值呈非线性增长,轴向超压从7.754 MPa增至16.567 MPa,径向从1.301 MPa增至4.838 MPa;(4)气体前驱与相变产物分离时间从60μs延长至110μs,垂直方向位移普遍大于水平方向,呈现“上下快、左右慢”的各向异性传播特征。
This study investigates how different carbon-containing absorbents affect the transient phase change expansion of liquid oxygen.Specifically,we prepared 3 types of liquid oxygen charges with varying carbon contents(0,0.1 g,and 0.2 g).A high-speed schlieren system and an overpressure measurement system were used for comparative analysis on the propagation patterns of gas precursor and phase change products in the schlieren flow field and the intensity changes of the phase change gas pressure.Both theoretical and experimental analysis were conducted to unveil the propagation patterns,evolution process and pressure distribution of the phase change gas in the air flow field.Results show that ①Carbon content exerts a significant regulatory effect on phase change expansion.As the carbon content increased from 0 to 0.2 g,the initiation time increased from 1.32 ms to 3.69 ms,and the cumulative pressure time increased by 180%.②The propagation speed of the gas precursor exhibited significant increase,with maximum horizontal speed rising from 473.96 m/s to 692.71 m/s and vertical speed from 875.00 m/s to 1604.17 m/s.③Peak overpressure showed nonlinear growth,with axial overpressure increasing from 7.754 MPa to 16.567 MPa and radial overpressure from 1.301 MPa to 4.838 MPa.④Separation time between the gas precursor and the phase change products increased from 60μs to 110μs.Vertical displacement generally exceeded horizontal displacement,showing an anisotropic propagation pattern of"rapid vertical expansion and slow lateral spread".