砂黏复合地层盾构掘进参数变化规律及掘进速率预测研究被引量：16

Tunneling Parameters Variation Laws and Velocity Prediction of Shield Tunneling in Sandy-clay Composite Strata

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摘要为研究砂黏复合地层中复合比与盾构掘进参数之间的规律,依托石家庄地铁1号线白留区间隧道工程,基于现场盾构掘进试验,通过对盾构原始掘进参数的二次转换,建立标准推力-标准转矩特征空间,并对传统盾构掘进速率模型进行修正。研究结果表明:1)正常掘进状态下,标准推力和标准转矩成对数关系,随着复合比的降低,标准推力和标准转矩增加;2)根据参数点在特征平面的分布和对应的施工状态,将特征平面划分为Ⅰ区(正常掘进区)、Ⅱ区(转矩偏大区)和Ⅲ区(推力偏大区),并依据复合比的不同,将正常掘进区进一步划分为Ⅰ1、Ⅰ2、Ⅰ3、Ⅰ4区;3)基于标准推力和标准转矩,建立适用于砂黏复合地层的掘进速率预测模型。 The variation laws of composite ratio of sandy-clay composite strata with tunneling parameters of shield in Bailiu Section tunnel project of Shijiazhuang Metro Line 1 are studied. Based on the site shield tunnel test, the standard thrust-standard torque characteristic space is established by the secondary conversion of the original tunneling parameters of shield, and the traditional shield tunneling velocity model is modified. The results show that:(1) Under the normal tunneling condition, there is a logarithmic relationship between standard thrust and standard torque;with the decrease of composite ratio, standard thrust and standard torque increase.(2) According to the distribution of parameter points in the characteristic plane and corresponding construction state, the characteristic plane is divided into zoneⅠ(normal tunneling zone), zone Ⅱ(excessive torque zone) and zone Ⅲ(excessive thrust zone);and according to the different composite ratios, the normal tunneling zone is further divided into zoneⅠ1,Ⅰ2,Ⅰ3 and Ⅰ4.(3) Based on the standard thrust and standard torque, a prediction model of tunneling velocity for sandy-clay composite strata is established.

作者于云龙管晓明王旭春聂庆科张若凡 YU Yunlong;GUAN Xiaoming;WANG Xuchun;NIE Qingke;ZHANG Ruofan(School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China;Hebei Research Institute of Construction & Geotechnical Investigation Co., Ltd., Shijiazhuang 050031, Hebei, China;Hebei Research Center of Geotechnical Engineering Technologhy, Shijiazhuang 050031, Hebei, China)

机构地区青岛理工大学土木工程学院河北建设勘察研究院有限公司河北省岩土工程技术研究中心

出处《隧道建设（中英文）》北大核心 2019年第7期1125-1131,共7页 Tunnel Construction

基金中国博士后科学基金面上项目(2017M621095) 山东省自然科学基金项目(ZR2016EEB27) 国家自然科学基金青年基金项目(51708317)

关键词盾构砂黏复合地层复合比盾构掘进参数标准推力标准转矩掘进速率预测模型 shield sandy-clay composite strata composite ratio shield tunneling parameters standard thrust standard torque tunneling velocity prediction model

分类号 U455.43 [建筑科学—桥梁与隧道工程]