基于随机介质理论修正Peck公式的暗挖隧道地表沉降预测  

Prediction of Surface Settlement of Underground Tunnel Based on Modified Peck Formula

作　　者：蓝必冠 黄明锋 杨浩 刘彬 周世均 LAN Bi-guan;HUANG Ming-feng;YANG Hao;LIU Bin;ZHOU Shi-jun(Chongqing Zhonghuan Construction Co.,Ltd.,Chongqing 401120)

机构地区：[1]重庆中环建设有限公司,重庆401120

出　　处：《广州建筑》2025年第2期1-6,共6页GUANGZHOU ARCHITECTURE

摘　　要：本文为更加准确地预测隧道开挖引起的地表沉降,采用随机介质理论对传统Peck经验公式进行了修正,提出了新隧道开挖引起地表沉降的计算方法。本文研究了不同覆跨比H/D和土层损失率μ条件下,地表沉降特性与合理单元数n的关系,提出了确定合理单元数n的方法。通过将修正Peck公式和传统Peck经验公式计算的地表沉降值与实测数据进行对比分析,结果表明,修正Peck公式比传统Peck经验公式能较好地预测隧道开挖引起的地表沉降。研究成果为传统Peck公式扩大了适用范围,丰富了隧道施工中地下开挖引起地表沉降的计算方法。To predict the ground settlement caused by tunnel excavation more accurately,the traditional Peck empirical formula was modified by the random medium theory,and a new calculation method of ground settlement caused by tunnel excavation was proposed.The relationship between the land surface settlement characteristics and the reasonable number of units n under the conditions of different span ratio H/D and soil loss rateμis studied,and a method to determine the reasonable number of units n is proposed.The ground settlement calculated by the modified Peck formula and the traditional Peck empirical formula is compared with the measured data.The results show that the modified Peck formula can better predict the ground settlement caused by tunnel excavation than the traditional Peck empirical formula.The research results extend the application range of traditional Peck formula and enrich the calculation method of ground settlement caused by underground excavation in tunnel construction.

关 键 词：隧道开挖 PECK公式 随机介质理论 地表沉降 预测 

分 类 号：U456.31[建筑科学—桥梁与隧道工程]