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[1]李壮,杨志全,朱颖彦,等.溜石坡崩塌体运动过程与防治措施研究*[J].中国安全生产科学技术,2021,17(6):173-179.[doi:10.11731/j.issn.1673-193x.2021.06.028]
　LI Zhuang,YANG Zhiquan,ZHU Yingyan,et al.Research on movement process and prevention measures of collapse mass in rock-sliding slope[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(6):173-179.[doi:10.11731/j.issn.1673-193x.2021.06.028]
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溜石坡崩塌体运动过程与防治措施研究*()
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年6期
页码:
173-179
栏目:
职业安全卫生管理与技术
出版日期:
2021-06-30

文章信息/Info

Title:
Research on movement process and prevention measures of collapse mass in rock-sliding slope
文章编号:
1673-193X(2021)-06-0173-07
作者:
李壮; 杨志全; 朱颖彦; 雨德聪
( 1.昆明理工大学 国土资源工程学院，云南 昆明 650093;
2.昆明理工大学 公共安全与应急管理学院，云南 昆明 650093;
3.昆明理工大学 云南省高校高烈度地震山区交通走廊工程地质病害早期快速判识与防控重点实验室，云南 昆明 650093;
4.中国科学院、水利部成都山地灾害与环境研究所，四川 成都 610041)
Author(s):
LI Zhuang;  YANG Zhiquan;  ZHU Yingyan;  YU Decong
关键词:
自然灾害及其防治; 溜石坡; 动力冲击; 防治装置; FLAC/PFC2D耦合计算
Keywords:
natural disasters and prevention;  rock-sliding slope;  dynamic impact;  prevention device;  FLAC/PFC2D coupling calculation
分类号:
X951；X43
DOI:
10.11731/j.issn.1673-193x.2021.06.028
文献标志码:
A
摘要:
为降低中巴公路沿线溜石灾害风险，以中巴公路K777桩处溜石坡为研究对象，定性分析溜石崩塌体运动特征并设计格栅挡墙防护结构。采用有限差分与离散元耦合方法对溜石灾害进行数值模拟，定量分析溜石崩塌体运动状态及公路挡墙动力冲击响应。结果表明：不同粒径下溜石平均速度变化趋势相同，溜石崩塌体运动速度与溜石粒径呈正相关，溜石在自然条件下对公路挡墙冲击集中且受力较大，通过布置格栅挡墙可降低公路挡墙受力，分散溜石冲击，有效拦截大粒径溜石，降低溜石灾害影响。在相同格栅挡墙孔径下，降速效果与溜石粒径呈负相关。可通过考察溜石坡实际情况设计格栅挡墙尺寸，降低中巴公路沿线溜石灾害风险。
Abstract:
In order to reduce the risk of rock-sliding disaster along the China-Pakistan Highway,taking the rock-sliding slope at the K777 pile of this highway as the research object,the movement characteristics of rock-sliding collapse body were qualitatively analyzed,and the protective structure of the grid retaining wall was designed.The finite difference and discrete element coupling methods were used to numerically simulate the rock-sliding disaster,and the movement state of the rock-sliding collapse body and the dynamic impact response of the highway retaining wall were quantitatively analyzed.The results showed that the change trends of the average speed of sliding rock with different particle sizes were the same.The movement speed of rock-sliding collapse body was positively correlated with the particle size of sliding rock,and the impact of sliding rock on the highway retaining wall was concentrated and the force was large under natural conditions.Laying the grid retaining wall could reduce the force of highway retaining wall,disperse the rock-sliding impact,effectively intercept the sliding rock with large particle size,and reduce the influence of rock-sliding disaster.Under the same aperture of the grid retaining wall,the deceleration effect was negatively correlated with the particle size of sliding rock.Therefore,the size of grid retaining wall can be designed by investigating the actual situation of rock-sliding slope to reduce the risk of rock-sliding disaster along the China-Pakistan Highway.

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相似文献/References:

[1]钟军豪,杨小礼.局部失稳条件下抗滑桩加固边坡的三维稳定性分析*[J].中国安全生产科学技术,2023,19(8):108.[doi:10.11731/j.issn.1673-193x.2023.08.016]
　ZHONG Junhao,YANG Xiaoli.Three-dimensional stability analysis of slope reinforced by anti-slide piles under local instability condition[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(6):108.[doi:10.11731/j.issn.1673-193x.2023.08.016]

备注/Memo

备注/Memo:
收稿日期： 2021-03-25
* 基金项目： 国家自然科学基金项目(41861134008)；云南省重点研发计划项目（202003AC10002）；云南省基础研究计划项目（202001AT070043）
作者简介： 李壮，硕士研究生，主要研究方向为岩石力学。
通信作者： 杨志全，博士，教授，主要研究方向为岩土工程灾害与防治。
更新日期/Last Update: