Study on laws of surface movement a nd deformation of goaf under subgrade in sand-loess area

Authors

LEI Mingxuan, CCCC First Highway Consultants Co., Ltd., Xi'an, Shaanxi 710065, ChinaFollow
LIU Guotian, CCCC First Highway Consultants Co., Ltd., Xi'an, Shaanxi 710065, China
SU Weiwei, CCCC First Highway Consultants Co., Ltd., Xi'an, Shaanxi 710065, China; Shaanxi Key Laboratory of Road Disaster Prevention, Xi'an, Shaanxi 710065, China
ZHANG Liujun, CCCC First Highway Consultants Co., Ltd., Xi'an, Shaanxi 710065, China; Shaanxi Key Laboratory of Road Disaster Prevention, Xi'an, Shaanxi 710065, China
YIN Lihua, CCCC First Highway Consultants Co., Ltd., Xi'an, Shaanxi 710065, China; Shaanxi Key Laboratory of Road Disaster Prevention, Xi'an, Shaanxi 710065, China

Abstract

A large number of goaf under sand-loess areas in China greatly restrict the highway construction development in sand-loess areas. Meanwhile, the goaf evaluation beneath under subgrade in sand-loess areas is especially important. According to the characteristics of goaf beneath the highway of sand-loess areas, based on FLAC3D software, this paper selected reasonable parameters to build the model of goaf under subgrade. Additionally, based on the mechanical property analysis of sand loess, the laws of surface movement and deformation parameters of the goaf under the subgrade were summarized, and the surface movement and deformation areas were identified, with the range of the most dangerous areas on the surface in sand-loess areas marked. Finally, important references were provided for the route selection and highway management in the goaf.

Publication Date

9-14-2023

DOI

10.14048/j.issn.1671-2579.2023.04.002

First Page

8

Last Page

13

Submission Date

March 2025

Recommended Citation

Mingxuan, LEI; Guotian, LIU; Weiwei, SU; Liujun, ZHANG; and Lihua, YIN (2023) "Study on laws of surface movement a nd deformation of goaf under subgrade in sand-loess area," Journal of China & Foreign Highway: Vol. 43: Iss. 4, Article 2.
DOI: 10.14048/j.issn.1671-2579.2023.04.002
Available at: https://zwgl1980.csust.edu.cn/journal/vol43/iss4/2

Reference

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