高坪-吉心段公路喀斯特工程地质综合勘察

Comprehensive Survey of Engineering Geology of Karst in Gaoping-Jixin Highway

以沪蓉国道主干线湖北省高坪-吉心段的喀斯特地质勘察工作为例,探讨喀斯特地区公路工程地质综合勘察的基本方法。在喀斯特地区运用遥感和地理信息技术技术、地质测绘、综合物探以及地质钻探等勘察手段,通过综合分析各种勘探成果,能够较准确地查明可溶岩的分布、喀斯特形态类型、分布规律、控制因素以及喀斯特水的赋存、分布和运移规律等,并根据不同的喀斯特地貌提出了有针对性的处理对策。通过不断的实践和经验总结,针对喀斯特工程地质问题合理运用综合工程勘察方法,能做出科学的分析评价,可以适应喀斯特区公路建设的需要,并且供今后在喀斯特地区修建公路时参考和借鉴。

Taking the karst geology investigation in the section from Gaoping to Jixin of Hurong national highway as an example, this paper discusses the basic method of engineering geology investigation of the highway project in the karst region. In the karst region, some investigation methods, such as remote sensing and GIS technology, geological mapping, comprehensive geophysical prospecting and geology drilling, are applied to research the special topic and analyze the exploring results, which can correctly ascertain the karst regulation, the type of the karst, controlling affections and the distribution and the movement regulation of the karst water. The comprehensive survey method can gain the scientific analysis and evaluation; It also can put forward the proper treatment countermeasure. Based on the results of the investigation, the design,construction and operation is economic and reasonable.