复杂岩溶地区溶洞综合探测及BIM建模分析技术研究

Research on Comprehensive Exploration and BIM Modeling Analysis Technology of Karst Caves in Complex Karst Areas

基于钻探见洞率高、岩溶强烈发育的复杂地质情况,为解决超前钻探测溶洞时布孔工程量大、对溶洞连通性、填充性探测效果不佳等技术短板,为降低岩溶区域桩基础施工过程中因溶洞探测不准和处理质量不佳导致漏浆、塌孔、吊钻、卡钻等施工风险,广州市白云区某医院扩建项目通过引入跨孔弹性波CT探测和管波探测技术对复杂岩溶区域进行联合探测,并利用BIM技术对联合探测成果建立溶洞—地基基础复合模型,经技术实践,探索出一种全新的溶洞综合探测及BIM建模分析的施工技术,为其他类似项目提供设计与施工参考。

Based on the complex geological conditions of high drilling penetration rate and strong karst development,in order to solve the technical shortcomings of large hole layout engineering and poor detection effect on cave connectivity and filling during advanced drilling detection of karst caves,and to reduce the construction risks of leakage,hole collapse,hanging drilling,and stuck drilling caused by inaccurate cave detection and poor processing quality during pile foundation construction in karst areas,a hospital expansion project in Baiyun District,Guangzhou City introduced cross hole elastic wave CT detection and pipe wave detection technology for joint detection of complex karst areas,and used BIM technology to establish a composite model of cave foundation based on the joint detection results.Through technical practice,a new construction technology for comprehensive cave detection and BIM modeling analysis was explored.Other similar projects provide design and construction references.