成桩后喀斯特地质桩端持力层基岩溶洞的处理

After the Pile Karst Geological Conditions Pile Bearing Stratum Bedrock Cave Processing

某酒店工程场地地下岩溶较发育,为典型的喀斯特地貌,对工程危害较大及对地基基础的稳定性不利,桩基础施工时,在力求穿越溶洞后,因地质复杂,成桩后仍发现桩端持力层存在溶洞,经采用钻孔注浆技术,填充、置换处理溶洞,使桩底水泥混合体凝固后强度提高,达到了持力层补强的目的。

Under one hotel＇s engineering site there develops typical karst landform. The development of karst is harmful to enginerring and is not helpful to foundation＇s stability,when constructing pile foundation they try to penetrate karst,because of the difficulty of engineering＇s geology they find that there are karsts on the enduring stratum of pile end after piling, they apply drilling and grouting teconology to fill and displace to handle karst,increase the strength of cement combination solidification of pile end and achieve the aim of increasing enduring stratum. Strength.