天山公路溜砂坡动力学特性及分形特征试验研究

Experimental Study on Dynamical and Fractal Characteristic of Sand-sliding Slope on Tianshan Highway

溜砂坡动力学特性研究是寻求有效防治措施的关键。本文通过天山公路溜砂坡的动力学特性物理模拟试验,初步探索了其崩滑的动力学机制,发现溜砂坡堆积呈现分形结构,表明其堆积过程是一个典型的自组织临界过程,整个坡体是一个广延耗散动力学系统。试验中发现了一种新的崩滑动力学机制——滑塌式崩滑,其失稳过程中存在一个潜在的滑动面,坡体呈现整体失稳的特征,颗粒呈现类似冲洪积物互层现象的堆积特征。

Dynamic characteristic of sand-sliding slope is of crucial importance for searching effective mitigation measures. By means of simulation experiments on the dynamic characteristic of sand-sliding slope, the dynamic mechanism of the failure was preliminarily explored,the course of piling exhibits fraetal structure and proves to be self-organized, and thus the sand-slope is a dissipated dynamic system. In the experiment a dynamic mechanism of the failure sliding mode was found having a potential surface sliding in slope and the sliding-slope presents holistic failure characteristic. The granules are of the piling characteristics similar to the interbedded phenomenon in the alluvial deposits.