基于被动源地震学方法的四川理县西山村滑坡结构与变形研究综述

Review of Structure and Deformation Characteristics of the Xishancun Landslide Obtained by Passive Seismic Methods

滑坡体内部结构、变形特征及其随时间变化特征是监测滑坡的重要内容。传统的滑坡监测方法依赖于大地测量方法和钻孔取样等工程手段,而地震学方法在获取地球内部结构以及震源破裂变形方面具有独特优势,其中基于被动源的地震学方法无需采用人工震源,野外作业灵活,能够安全、经济、高效地监测滑坡。所提方法成功应用于四川省理县西山村滑坡监测,获取了滑坡体地震波速度结构、滑动面深度、滑坡体脆性变形特征等信息。简要叙述被动源地震学方法监测滑坡的基本理论及其在西山村滑坡研究中所取得的进展。

The recognition of landslide structure and deformation behavior and the change with time are crucial in landslide hazard monitoring.Seismological methods have unique advantages in obtaining the internal structure of the Earth and the fault rupture and deformation.Passive seismic methods do not need artificial sources,and the field work is flexible.Passive seismic methods are safe,economical and effective to monitor landslide.Passive seismic methods have been used to obtain velocity structure,thickness and brittle deformation characteristics of the Xishancun landslide in Lixian County,Sichuan Province.This paper briefly describes the basic theory of these seismological methods and the progress in the study of the Xishancun landslide.