基于图像相关分析的锁固型滑坡模型试验方法

Locked Landslide Model Test Method Based on Image Correlation Analysis

针对支撑拱式、挡墙式、三段式锁固型滑坡分别设计了物理试验模型,采用整体牵引及前缘卸载方式模拟了滑坡从启动到滑动的演化过程,实现了对典型锁固型滑坡演化的全过程模拟,利用三维激光扫描、激光测振等多种非接触测试手段,获取了滑坡演化过程中位移、应力、破裂扩展等多个物理场数据。研究成果丰富了滑坡模型试验的测试方法和手段,为锁固型滑坡的破坏机制及演化规律的研究提供了新的途径。

A series of physical test models are designed for support arch type,retaining wall type,and three-stage type of locked patch landslides.The overall traction and leading edge unloading method are used to simulate the evolution of the landslide from startup to sliding.The entire process of simulating the landslide evolution of the typical locked patch landslide is achieved,and multi-physics data such as displacement,stress,and fracture propagation in the process of landslide evolution are acquired by various non-contact test methods such as three-dimensional laser scanning and laser vibration measurement technique.The research results have enriched the test methods,and provided new research approaches for the study on the failure mechanism and evolution law of locked landslides.