HSP法在盾构施工隧道超前地质预报中的改进和应用  

Improvement and Application of Horizontal Sonic/Seismic Profiling Method in Advance Geological Prediction of Shield Tunneling

作　　者：赵子越 游元明 孟露 汪旭 裴子逸 ZHAO Ziyue;YOU Yuanming;MENG Lu;WANG Xu;PEI Ziyi(China Railway Southwest Research Institute Co.,Ltd.,Chengdu 611731,Sichuan,China;China Railway Development Investment Group Co.,Ltd.,Kunming 650002,Yunnan,China;Sichuan Tieke Construction Supervision Co.,Ltd.,Chengdu 611731,Sichuan,China)

机构地区：[1]中铁西南科学研究院有限公司,四川成都611731 [2]中铁开发投资集团有限公司,云南昆明650002 [3]四川铁科建设监理有限公司,四川成都611731

出　　处：《隧道建设（中英文）》2021年第8期1344-1352,共9页Tunnel Construction

基　　金：中国中铁重大专项(2020-重大专项-04-01);国家自然科学基金面上项目(41974145)。

摘　　要：为解决盾构施工中现场环境导致无法顺利进行超前地质预报的问题,在盾构施工过程中运用HSP(Horizontal sonic/seismic profiling)水平声波/地震波剖面法进行地质超前预报工作,良好地规避传统方法的局限性。将S变换和S变换自适应滤波引入HSP数据处理中,提高该处理系统在复杂施工条件下对有效信号的识别和去噪能力,通过时频图对比分析验证该方法的有效性,获取掌子面前方地层反射特征参数图谱,建立样本数据模型为实际施工测量进行指导。通过HSP在贵阳轨道交通3号线盾构区间应用案例的解析和实际情况的对比分析,表明HSP声波反射法对不良地质结构面的存在具有较好的正相关响应,是适用于盾构施工时地质预报的高效方法之一。The advance geological prediction cannot be performed smoothly due to the shield construction environment limit.Thus,the horizontal sonic/seismic profiling(HSP)method is employed for advance geological prediction in shield construction,which effectively avoids the limitations of the conventional method.The S transform and its adaptive filter are introduced to the HSP during data processing to improve the effective signal recognition and denoising capacity of the processing system under complex construction conditions.Then,the effectiveness of the method is verified using time and frequency chart analysis,thereby obtaining a reflected characteristic parameter map of strata ahead of tunnel face and establishing a sample data model to guide the construction measurement.By analyzing an application of HSP in Guiyang metro line 3′s shield section,compared with the actual situation,it is shown that the HSP acoustic reflection method has a good positive correlation response to the existence of adverse geological structure plane,indicating that it is an efficient method for geological prediction in shield construction.

关 键 词：隧道 盾构施工 地质预报 HSP声波反射法 S变换 去噪 

分 类 号：U45[建筑科学—桥梁与隧道工程]