Application of Horizontal Directional (Guided) Drilling Technology in the Highway Drainage System Improvement Project

Abstract

In this paper, in view of poor drainage of Lei-Yi Highway median horizontal drainage system, according to the structural characteristics of the road, making use of advantage of Directional (Guided) Drilling Technology, the comparative analysis of several different methods of drilling trajectory is made, and the method that uses the Directional (Guided) Drilling technology and grouting technology is put forward in the highway transverse drainage improvement project. The potential difficulties are solved in the construction process, such as hole enlargement and roadbed subsidence. The field test shows a very good drainage effect is achieved. The paper has provided the solution ideas for the similar drainage improvement project.