基于实测数据的隧道地表沉降Peck经验参数研究<sup>*</sup>

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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

Received: 03 December 2021

PACS:

P258

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	ZHANG Jianquan
	ZHANG Keli
	YAO Aimin
	YAN Yulei
	CHENG Guifang

Cite this article:

ZHANG Jianquan,ZHANG Keli,YAO Aimin, et al. Peck Empirical Parameters of Tunnel Surface Settlement Based on Measured Data[J]. Journal of Railway Engineering Society, 2023, 40(3): 89-95.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/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.