基于3DEC对岩质高边坡的稳定性分析

结合辽宁省境内建兴高速公路某高边坡的施工过程,利用现代非接触测量技术采集岩质边坡结构面信息,采用赤平投影技术对边坡结构面进行分组,从而判断出坡面与节理结构面的空间关系,识别出施工过程中可能出现岩块滑落的区域。然后,在此基础上采用大型三维离散元软件3DEC模拟边坡采用不同的台阶数进行开挖,通过监测边坡岩体位移的变化,找出该岩质边坡不稳定块体存在的位置,并得出采用5级台阶开挖时,边坡岩体的位移量最小,边坡的稳定性更好,从而指导该边坡工程在开挖过程中的安全施工,以及为边坡的后期支护提供理论依据和参考。

Stability Analysis of High Rock Slope based on 3DEC

Combining with the construction process of Jianchang - Xingcheng highway high slope in Liaoning province , modern non-contact digital measurement technology is adopted to collect information on rock slope structural plane and stereographic projection technique is used to group structural planes ,which will help judge spatial relationship of slope surface and joint structure .Then the probable slipping zone in the process of excavation can be identified .Based on these ,large 3D discrete element software 3DEC is adopted to simulate progress of slope excavation ,from which the dis-placement will be calculated to find out the instability blocks' position .Then important reinforcement positions can be provided and treatment measures are taken to ensure the safe of slope excavation ,which provides a theoretical basis and reference with the support of the slope in the future .