土工基础

›› 2018, Vol. 32 ›› Issue (3): 289-292.

• 工程实录 • 上一篇    下一篇

广清高速路段岩溶发育特征及分类研究

李俊杰   

  1. （广东省工程勘察院，广州 510510）
  • 收稿日期:2017-12-21 修回日期:2018-02-04 出版日期:2018-06-22 发布日期:2018-06-26
  • 作者简介:李俊杰（1983-），男，助理工程师，研究方向为岩土工程勘察、设计。

Characteristics of Karstic Rock Cavity Along the Guangzhou-QingyuanExpressway Alignment

LI Junjie   

  1. (Guangdong Engineering Investigation Institute, Guangzhou 510510)
  • Received:2017-12-21 Revised:2018-02-04 Online:2018-06-22 Published:2018-06-26

摘要： 广清高速改扩建工程K2+890～K36+200段属广花平原，地处浅覆盖型岩溶区，覆盖层平均厚度15m左右，部分地区遇洞率高达62.4%，属于国内外较为罕见的高见洞率岩溶发育区。结合勘察资料，统计了各标段钻孔遇洞率、线岩溶率、溶洞规模、充填情况等，分析了该区岩溶发育特征。根据不同条件对现有的几类地质概化模型进一步分类，并编写查询软件，设定不同条件快速查出对应数据，能够初步了解较危险区域情况，提高分析工作效率。

关键词: 广清高速, 岩溶特征, 岩溶分类, 查询软件

Abstract: The topographic between Station K2+890 and K36+200 in the widening of GuangzhouQingyuan Expressway line is plain underlying with shallow buried kart terrain. The average overburden soil thickness is 15 meters. The rock cavities are well developed in this area with a rate of cavity of 62.8%. The rock cavities, pinnacles, dimension of rock cavity and soil filling information encountered in each borehole are statistically analyzed to characterize the karst features. The information was input into a database software so that different parameters can be rapidly extracted for the rock analysis and other design and construction purposes.

Key words: Guangzhou Qingyuan Expressway, Karst Characterization, Karst Classifications, Database Software