The Bridge Pile Foundation Drilling Cave Detection And Treatment Technology Research

In this paper, through the study of karst area bored side(bottom) cave detection method, karst geological hazards, pile stability, karst surveying technology, the paper have a more comprehensive understanding of the position for pile design, evaluation systems, and comprehensive survey of geological hazards in karst areas, etc. And according to the type of pile, this paper propose appropriate disposal for the emergence of geological hazards, and this paper combined with engineering examples described in detail, which has a strong guiding significance.To carry out inspections at the karst area by drilling and geophysical methods such as integrated use can more accurately and comprehensively reflects the karst geological conditions, improve the design, construction and reliability, to avoid inaccurate results of a single survey provided to the project adverse consequences, ensure that the projects aim to achieve a reasonable economy. This paper summarizes the characteristics of pile drilling cave, and through a variety of factors affecting the stability of the overall analysis, this paper also uses numerical simulation modeling and analysis of the building foundation or under roof cave under roadbed stability.Finally, through the study of theoretical analysis and engineering practice of Tongchuan City, chuankou bridge,the paper sums up the pile(bottom) and select the cave detection method, and then through a variety of karst cave treatment technology briefly, this paper draw practical cave Treatment pile drilling technologies and solutions, with a strong reference value.