基于实测数据的隧道地表沉降Peck经验参数研究<sup>*</sup>

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (982 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要 研究目的: 地下工程施工诱发的地表沉降预测模型及参数,不仅与施工方法密切相关,更因区域地质条件的变化而具有很大的局限性。为精确获得暗挖隧道地表沉降的Peck模型经验参数,依据北京地区大量岩土工程勘察报告所揭示的不同区域地层岩土力学参数进行区域划分,基于不同区域矿山法和盾构法工程地表沉降监测大数据,利用理论计算与回归分析方法,对Peck公式预测模型参数(沉降槽宽度参数K及地层损失率V_l)进行大量的反演分析,获得不同区域典型地质条件下的经验参数,给出精确参数的取值范围,从而为本地区及类似地质条件下的暗挖工程地表沉降变形预测及工程安全风险管控提供技术支持。
研究结论: (1)北京西部砂卵石地层、中部中粗砂地层、东部黏性土地层的暗挖隧道地表沉降Peck公式预测参数的取值范围如下:盾构法隧道沉降槽宽度参数K分别为0.32~0.44、0.34~0.51、0.48~0.73,地层损失率V_l分别为0.60%~1.24%、0.83%~1.38%、1.28%~2.52%;(2)西、中、东部区域矿山法隧道地表沉降Peck公式参数适宜的取值范围如下:沉降槽宽度参数K分别为0.29~0.44、0.47~0.61、0.59~0.70,地层损失率V_l分别为0.97%~1.51%、1.13%~1.90%、1.65%~2.00%;(3)本研究成果可应用于类似地质条件下的暗挖工程领域地表沉降的变形预测。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	张建全
	张克利
	姚爱敏
	闫宇蕾
	程贵方

关键词 ：暗挖工程, 地表沉降, 预测参数, 风险控制

Abstract：Research purposes: The prediction model and parameters of ground settlement induced by underground engineering construction are not only closely related to the construction method, but also have great limitations due to the changes of regional geological conditions. In order to accurately determine the empirical parameters of the Peck model for the surface settlement of the underground excavation tunnel, the regional division is carried out according to the geotechnical parameters of the strata in different regions revealed by a large number of geotechnical engineering survey reports in Beijing, and based on the large data of the monitoring of the surface settlement of the mining method and the shield method in different regions, the theoretical calculation and regression analysis methods are used, the Peck formula prediction model parameters (settlement trough width parameter K and formation loss rate V_l) have been extensively inverted and analyzed, and the empirical parameters under typical geological conditions in different regions have been obtained, and the range of accurate parameters has been given, which can provide technical support for the prediction of surface settlement and deformation of underground excavation projects and the control of engineering safety risks in the region and similar geological conditions.
Research conclusions: (1) The predicted parameters of the Peck formula for the surface settlement of the buried tunnel in the sandy gravel stratum in the west of Beijing, the medium-coarse sand stratum in the middle and the cohesive soil stratum in the east are as follows: the width parameter K of the shield tunnel settlement trough is 0.32~0.44, 0.34~0.51, 0.48~0.73, and the formation loss rate V_l is 0.60%~1.24%, 0.83%~1.38%, 1.28%~2.52%, respectively. (2) The appropriate range of Peck formula parameters for surface settlement of mining tunnel in the west, middle and east regions is as follows: the width parameter K of settlement trough is 0.29~0.44, 0.47~0.61, 0.59~0.70, and the formation loss rate V_l is 0.97%~1.51%, 1.13%~1.90%, 1.65%~2.00%, respectively. (3) The research results can be applied to the deformation prediction of surface settlement in the field of underground excavation under similar geological conditions.

Key words： underground excavation surface settlement prediction parameters risk control

收稿日期: 2021-12-03

PACS:

P258

基金资助:2017年北京市地方标准制修订计划项目:建设工程第三方监测技术规程子课题;北京市科技新星计划资助项目

作者简介: **张建全,1963年出生,男,总工程师。

引用本文:

张建全, 张克利, 姚爱敏, 闫宇蕾, 程贵方. 基于实测数据的隧道地表沉降Peck经验参数研究^*[J]. 铁道工程学报, 2023, 40(3): 89-95.
ZHANG Jianquan, ZHANG Keli, YAO Aimin, YAN Yulei, CHENG Guifang. Peck Empirical Parameters of Tunnel Surface Settlement Based on Measured Data. Journal of Railway Engineering Society, 2023, 40(3): 89-95.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2023/V40/I3/89

[1]	Peck R.B. Deep Excavation and Tunneling in Soft Ground[C]//Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering.Mexico,1969:225-290.
[2]	石磊.修正Peck公式在粉质黏土暗挖施工中地表沉降预测研究[J].兰州工业学院学报,2019(4):52-56.Shi Lei. Prediction of Modified Peck Formula Used in Surface Subsidence for Underground Excavation in Silty Clay[J]. Journal of Lanzhou Institute of Technology,2019(4):52-56.
[3]	季大雪.武汉长江隧道盾构下穿武九铁路沉降影响分析[J].铁道工程学报,2009(10):59-63.Ji Daxue. Analysis of the Influence of Underpass Shield of Wuhan Yangtze River Tunnel on Settlement of Wuhan-Jiujiang Railway[J]. Journal of Railway Engineering Society,2009(10):59-63.
[4]	吴锋波,金淮,杨歧焱,等.北京地铁隧道地表横向沉降槽参数分析[J].隧道建设(中英文),2020(5):660-671.Wu Fengbo, Jin Huai, Yang Qiyan,etc. Analysis of Ground Transverse Settlement Groove Parameters of Beijing Metro Tunnel[J]. Tunnel Construction,2020(5):660-671.
[5]	王坤.宁波地区地铁盾构下穿铁路路基的控制性研究[J].铁道工程学报,2017(4):91-95.Wang Kun. Research on the Settlement Control of Subway Shield Undercrossing Railway Subgrade in Ningbo Area[J]. Journal of Railway Engineering Society, 2017(4):91-95.
[6]	段绍伟,黄磊,鲍灶成,等.修正的Peck公式在长沙地铁隧道施工地表沉降预测中的应用[J].自然灾害学报,2015(1):165-169.Duan Shaowei, Huang Lei, Bao Zaocheng, etc. Application of Modified Peck Formula in Surface Subsidence Prediction of Changsha Subway Tunnel Construction [J]. Journal of Natural Disasters, 2015(1):165-169.
[7]	郑馨,麻凤海.长春地层地铁隧道施工的Peck公式改进[J].地下空间与工程学报,2017(3):732-736.Zheng Xin, Ma Fenghai. Improvement of Peck Formula in Subway Construction in Changchun[J]. Chinese Journal of Underground Space and Engineering, 2017(3):732-736.
[8]	O′Reilly M P,New B M. Settlement above Tunnels in the United Kingdom—Their Magnitude and Prediction[C]// Proc. Tunnelling’82, Institution of Mining and Metallurgy. London,1982:173-181.