PHC刚性复合地基在龙岩地区土洞溶洞地质中的应用

The Application of PHC Rigid Composite Foundation in Longyan Region Soil Cave and Karst Area

针对龙岩地区土洞溶洞分布较广的地质情况,以该地区某项目基础设计为实例,通过深入分析,计算对比,阐述了PHC刚性复合地基方案在该地质情况下的适用性;应用布辛奈斯克学弹性力学求解法,对灌浆法处理土洞溶洞最小深度进行了理论设计,代入达西定律,对灌浆压力的经验值进行了理论验证,并对压力灌浆法工艺及流程进行简要阐述。实施效果表明,PHC刚性复合地基及压力灌浆法在该地质情况下,可靠可行。

Has a wide distribution in l_ongyan region soil cave and Karst cave , based on the region a project foundation design as an example, through the thorough analysis and calculation, this paper expounds the PHC rigid composite foundation scheme under the condition of the geological applicability; plied Boussinesq theory, elastic mechanics method, the grouting method and treatment of soil cave cave theory is designed for minimum depth, generation into the Darcyg law, the experience value theory verification, grouting pressure and the technology and process by the method of pressure grouting are expounded briefly. Effect shows that the PHC rigid composite foundation and pressure grouting method in the geological conditions, reliable and feasible.