摘要
溜砂坡作为高寒山区常见的一种地质灾害广泛分布于天山公路北坡,并对道路建设与正常维护运营构成严重危害.由于岩体受寒冻风化影响严重,产屑率极高是砂粒产生累进补给破坏失稳的主要原因.应用PFC2D颗粒流软件对砂粒累进补给破坏失稳过程进行模拟,并对砂粒位移和速度进行监测,分析其运动变化规律.研制了一套装配式溜砂坡灾害防治装置,并进行了试验段施工应用,取得了较好防治效果.
As a kind of specific geologic h犯ard in alpine region,出e s如dsliding slope is widely distributed along the Tianshan highway, and it has done a severe harm to the normal construction, maintenance and op-eration of the road. Due to a serious congelifraction, the rock produced debris rate is very high, which is the main reason for the failure of the debris production progressive replenishment. PFC2D software is applied to make a nimerical simulation of debris progressive replenishment process,monitor the sand velocity variation and displacement, and analyze the motion and variation law. A set of new protection device has been devel-oped, which has been used in the testing region construction, and meanwhile a good control effects have been obtained.
作者
张军
舒中潘
ZHANG Jun;SHU Zhongpan(Sichuan Institute of Geological Engineering Investigation, Chengdu 610072, China)
出处
《成都大学学报（自然科学版）》
2017年第4期434-437,共4页
Journal of Chengdu University（Natural Science Edition）
关键词
溜砂坡
累进补给破坏模式
PFC2D
防治装置
sand-sliding slope
failure mode by debris progressive replenishment
particle follow code 2 di-mension program（PFC2D） protection device
