Parameter optimization design of anchors in high cutting rock slope

LIU Jia-long; HE Lei; FENG Zi-xia; WANG Bao-qi

doi:10.16285/j.rsm.2016.S2.048

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Parameter optimization design of anchors in high cutting rock slope

更新时间：2026-06-25

- Parameter optimization design of anchors in high cutting rock slope
- Vol. 37, Issue S2, Pages: 375-380(2016)
- 作者机构：
  
  中国电力科学研究院输变电工程研究所,北京,100055
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.S2.048
  CLC： TU473
- Online First：09 June 2018，
  
  Published：2016
- 稿件说明：
移动端阅览
LIU Jia-long, HE Lei, FENG Zi-xia, et al. Parameter optimization design of anchors in high cutting rock slope[J]. 2016, 37(S2): 375-380.
DOI：

LIU Jia-long, HE Lei, FENG Zi-xia, et al. Parameter optimization design of anchors in high cutting rock slope[J]. 2016, 37(S2): 375-380. DOI： 10.16285/j.rsm.2016.S2.048.

摘要

针对某220 kV变电站岩质高挖方边坡，采用极限平衡法和数值分析法，设置不同锚杆打入角度和长度方案对边坡的稳定性进行了计算对比分析，优化了锚杆设计参数，评价了坡顶位移监测、深层水平位移监测和锚杆应力监测对锚杆加固效果。结果表明，（1）随着锚杆打入角度的增加，边坡安全系数先增大后减小，存在最优锚固角度，确定22°为最优锚固角度；（2）边坡下部锚杆受力大于上部锚杆受力，设计时应有重点考虑下部锚杆参数。当边坡安全系数不满足设计要求时，应适当增大下部锚杆截面尺寸或增加锚杆长度；（3）各排锚杆应进行不等长设计，锚杆长度通过极限平衡法量取潜在滑动面到坡面的距离进行确定和验算；（4）现场监测结果显示优化设计后的锚杆参数加固效果良好，经济效益可观。

Abstract

Combined with a high cutting rock slope near a 220 kV substation

the parameters of the anchors are analyzed based on the limit equilibrium method and numerical method. The design parameters are optimized by comparative analysis of the slope stability results that are calculated by setting different angles and lengths of the anchors. The anchor reinforcement effect is evaluated by surface displacement monitoring

deep ground displacement monitoring and stress monitoring of the anchors. The results show that: (1) With the increase of anchorage angle

the safety factor increases at beginning and then decreases; so there exists an optimum anchor angle. 22°for this project. (2) The anchors in the lower part of slopes exhibit larger axial force; so it is important to focus more on the design parameters of anchors in the lower part of slopes. If the slope safety factor could not satisfy the design requirement

increase the cross-section size or length of the anchors in the lower part of slopes as appropriate. (3) The length inequality design of the anchors is suggested. The anchor length shall be determined by measuring the distance between the slip surface and slope surface at first; then check the calculation results by the limit equilibrium method. (4) The in site monitoring results show that the optimization design of anchors achieves relatively high performance and good economic benefits.

关键词

Keywords

references

Views

331

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Coupling mechanism of seepage and heat transfer in rock fracture based on physics-informed neural networks

Influence of construction gap on the force of steel lining in compressed air storage cavern

Stability and failure mode analysis of tunnel face in composite ground with upper sand and lower clay layers

Characterization method for the three-dimensional soil cutting failure surface based on damage energy dissipation

Pullout simulation on fully grouted rock bolts based on residual shear strength

Related Author

WANG Zhi-liang1

XIAO Zhi-huan1

SHEN Lin-fang1

LI Shao-Jun2

ZHANG Gui-min

SUN Wen-qing

ZHU Ze-fan

SU Yong-kang

Related Institution

Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology

State Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

School of Mechanics and Civil Engineering, China University of Mining and Technology

State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology

School of Highway, Chang’an University

AI问答

⁰