浅埋地下爆炸的地面运动研究  

Study on Ground Motion of Shallow Underground Explosion

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作  者:张伟 艾广建[2] 陈仁山[3] ZHANG Wei;AI Guangjian;CHEN Renshan(School of Civil Transportation Engineering,Shandong Jiaotong University,Jinan 250357,China;Shandong Taishan Road and Bridge Engineering Company,Tai'an 271000,China;Research Centes for Road Safety and Disastes Reiuction Technology,Shandong Jiaotong University,Jinan 250037,China)

机构地区:[1]山东交通学院交通土建工程学院,山东济南250357 [2]山东泰山路桥工程公司,山东泰安271000 [3]山东交通学院道路安全中心,山东济南250357

出  处:《山东交通学院学报》2019年第4期54-59,77,共7页Journal of Shandong Jiaotong University

基  金:山东交通学院博士科研启动基金项目资助;2019年省级水利科研与技术推广项目(SDSLKY201909);山东省软科学研究计划(2016RKB01453)

摘  要:基于弹性动力学和爆炸力学基本理论,根据爆炸等效荷载模型,将爆炸震源简化为膨胀空腔,根据爆破地震波位移势函数的特点,利用复合函数与积分变换及分离变量方法,建立浅埋地下爆炸作用下地震波在半无限介质中传播的计算模数。结合工程爆破实例,运用MATLAB语言编程并进行计算分析,求解不同情况下爆破地震波在自由表面的位移场,预测浅埋地下爆炸中爆破地震波的传播运动规律,与现场的爆破振动监测数据进行对比,验证了所建研究模型的可行性。Based on the basic theory of elastodynamics and explosive mechanics,the explosion shock source is reduced to the expansion cavity according to the explosion equivalent load model.According to the characteristics of the blasting seismic wave displacement function,the computational module of seismic wave propagation in the semi-infinite medium under the action of shallow underground explosion is established by using the method of compound function,integral transformation and separation variable.Combined with the example of engineering blasting,MATLAB language programming and computational analysis are used to solve the displacement field of blasting seismic waves on the free surface under different circumstances,and predict the propagation and motion rule of blasting seismic waves in shallow underground explosions.Compared with the blasting vibration monitoring data at the scene,the feasibility of the research model is verified.

关 键 词:爆炸震源 爆炸等效荷载模型 位移势函数 位移场 

分 类 号:O383[理学—流体力学]

 

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