爆炸冲击波在高低压状态煤岩分界面的突跃分析  

Analysis of Jump Shock Wave in Coal and Rock Interface of High-low Pressure Status

作　　者：魏明尧[1] 陈鹏[1] 许福乐[1] 李楠[1] 郭金栋[1] 喜润泽[1] 

机构地区：[1]煤炭资源与安全开采国家重点实验室中国矿业大学(徐州)安全工程学院,徐州221008

出　　处：《爆破》2010年第2期1-4,40,共5页Blasting

基　　金：国家自然科学专项基金资助项目(50427401);教育部新世纪优秀人才支持计划资助项目(NCET-06-0477);煤炭资源与安全开采国家重点实验室(中国矿业大学)自主研究评选资助(SKLCRSM09X01)

摘　　要：根据弹塑性介质冲击波状态方程,考虑了岩石畸变的影响,加入岩石的非线性弹塑性本构关系,组成了冲击波在高压岩石介质传播的状态方程组。然后根据波阵面两侧各状态量的变化,分析了冲击波在高压塑性硬化岩石介质中传播的波阵面波形突跃规律,同时分析了冲击波在由低压岩石介质向高压岩石介质传播过程中的应力幅值突跃规律,并建立了介质压力与冲击波幅值的关系式。研究成果为预防灾害发生及制定防冲措施提供了理论依据。According to the state equation of shock wave in elastic-plastic medium, the state equation set of shock wave in high-pressure of rock was formed by adding the non-linear elastic-plastic constitutive relation of rock, simultaneously, the effect of rock distortion was considered. Then, based on the changes of some state variables pre and post of wavefrent, waveform jump law of shock wave transmitted in the high-pressure plastic hardening rock was studied, the relation formula of and medium＇s pressure and shock amplitude was also studied when shock wave trans- mitting from low pressure state medium to high pressure state medium. Moreover, the relationship between medium pressure and shock wave amplitude was established. The results provided a theoretical basis for the prevention of disasters and preventing rock burst measures.

关 键 词：突跃 冲击波 状态方程 高低压分界面 

分 类 号：O382.2[理学—流体力学]