基于AHP-云模型的隧道断层破碎带施工风险评价  

Excavation Risk Assessment of Tunnel Fault Fracture Zone Based on AHP-Cloud Model

作　　者：刘广进 彭亚雄 苏莹 黄智刚 吴立[3] LIU Guangjin;PENG Yaxiong;SU Ying;HUANG Zhigang;WU Li(Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring,Hunan University of Science and Technology,Xiangtan 411201,China;Fuzhou Water Affairs Pingtan Water Diversion Development Co.,Ltd.,Fuzhou 350001,China;Faculty of Engineering,China University of Geosciences(Wuhan),Wuhan 430074,China)

机构地区：[1]湖南科技大学岩土工程稳定控制与健康监测湖南省重点实验室,湖南湘潭411201 [2]福州水务平潭引水开发有限公司,福建福州350001 [3]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《安全与环境工程》2023年第3期118-128,共11页Safety and Environmental Engineering

基　　金：湖南省自然科学基金项目(2020JJ5163);湖南省教育厅科学研究项目(22B0486、19C0736);江汉大学省部共建精细爆破国家重点实验室、江汉大学爆破工程湖北省重点实验室联合开放基金资助项目(PBSKL2022D08)。

摘　　要：断层破碎带是隧道施工过程中常见的不良地质条件,易引发隧道围岩坍塌失稳灾害。为避免施工人员与设备的损失,将隧道穿越断层破碎带施工风险划分为4个等级,建立了工程地质条件、水文地质条件和设计与施工技术3个一级评价指标和12个二级评价指标体系以及分级标准;通过对评价指标进行标准化处理,构建了基于层次分析(AHP)-云模型的穿越断层破碎带隧道施工风险评价模型;将该模型应用于福建省平潭及闽江口水资源配置工程,对大樟溪-东张水库隧道施工风险进行评价。结果表明:该隧道穿越断层破碎带区域的施工风险综合评价云图中,云滴大部分处于“中高风险”,少部分处于“低风险”,说明该区域隧道施工风险处于较高风险等级;现场隧道施工灾害发生情况与模型风险评价结果基本一致,证明了该模型的可靠性和有效性。The collapse of surrounding rock is a common geological disaster in tunnel construction through fault fracture zone.In order to avoid the loss of construction personnel and equipment,the construction risk of tunnel crossing fault and broken zone is divided into 4 levels>and 3 primary evaluation indexes and 12 secondary evaluation index systems as well as grading standards for engineering geological conditions,hydrogeological conditions and construction technological conditions are established.By standardizing the evaluation index,a risk evaluation model of tunnel construction through fault fracture zone is constructed based on AHP design and cloud model.The model is applied to the project of Pingtan and Minjiang River saliva resource allocation in Fujian Province to evaluate the construction risk of Dazhangxi-Dongzhang Reservoir tunnel.The results show that in the comprehensive parity cloud map of the tunnel through the fault fracture zone,most cloud droplets are at"medium and high risk",and a few are at"low risk",indicating tha t the tunnel cons true tion risk in this area is at a high risk level.The disaster occurrence of the tun nel construction is basically consistent with the risk evaluation results of the model,which proves the reliability and effectiveness of the model.

关 键 词：隧道断层破碎带 围岩坍塌失稳 AHP 云模型 施工风险评价 

分 类 号：X948[环境科学与工程—安全科学] U458.3[建筑科学—桥梁与隧道工程]