基于多方向的SH横波震源装置的设计与实验

Design and experiment of SH wave source device based on multi-direction

在当前的地震勘探中,纵波的应用更加广泛。但是它存在重锤激发方向单一的问题。相比纵波,SH横波波速低,波长短。在勘探精度和分辨率上都有着明显优势。为此,根据震源的激振,运动以及动力要求,研制出一种基于多方向的SH横波震源装置。该装置主要包括重锤提升释放,导向以及反力机构。在机构设计完成后,对震源各模块中关键零部件进行校核分析,验证各零部件结构设计及材料选取是否满足震源工作实际受力条件。最后经过试验验证,此震源装置冲击能量大,能量损失小,探测深度达到200 m。使其在地质勘探中有良好的推广价值和应用前景。

In current seismic exploration,the application of longitudinal waves is more extensive.However,it has the problem of a single direction of heavy hammer excitation,SH waves have low wave velocities,short wavelengths.There are clear advantages in both exploration accuracy and resolution.To this end,according to the excitation,motion and power requirements of the source,a multi-directional SH wave source device was developed.The device mainly includes a heavy hammer lift release,guide and reaction mechanism.After the completion of the mechanism design,the key components in each module of the seismic source are checked and analyzed to verify whether the structural design and material selection of each component meet the actual force conditions of the seismic work.Finally,after test verification,the shock energy of this source device is large,and the detection depth reaches 200 m.It has good promotion value and application prospects in geological exploration.