岩溶率深度校正及应用  

Depth Correction of Karst Rate and Its Application

作　　者：彭功勋 赖胜 许韬 谢易 唐健 PENG Gongxun;LAI Sheng;XU Tao;XIE Yi;TANG Jian(Guangzhou Municipal Engineering Design&Research Institute, Guangzhou510060,China)

机构地区：[1]广州市市政工程设计研究总院有限公司,广州510060

出　　处：《广东土木与建筑》2023年第2期15-18,共4页Guangdong Architecture Civil Engineering

摘　　要：通过若干工程实例分析了岩溶率指标随着勘探孔入岩深度的变化规律。研究表明,见洞隙率和线岩溶率对于一个工程场地都并非常量,而是随着入岩深度而发生变化;一个工程场地的溶洞疏松度基本表现为一个常量;岩面以下一定深度范围内的见洞隙率随着入岩深度增加,逐渐趋近于一个极值,而线岩溶率则一般呈减小的趋势。并由此提出,具体工程充分考虑工程的特点,给出针对性的、经深度校正后的线岩溶率指标以有效指导设计和施工。Some engineering examples are used to analyze the variation of karstification index with the depth of penetration of exploration hole. The results show that the liner karst rate as well as the borehole porosity rate is not constant for a project site,but varies with the depth of rock entry. However,the porosity degree of karst cave in an engineering site is basically a constant. With the increase of the depth of rock entry,the whole-depth borehole porosity rate tends to a limit value,while the liner karst rate tends to decrease. It is suggested that the specific project should take the characteristics of the project into account,and the liner karst rate index after depth correction is given to guide the design and construction effectively.

关 键 词：见洞隙率 线岩溶率 溶洞疏松度 深度校正 

分 类 号：TU435[建筑科学—岩土工程]