高速公路下伏采空区的勘察与注浆加固技术研究

采空区是公路设计中典型的不良地质之一，弄清勘察作用，查明采空区分布，理解注浆加固机理，掌握注浆法施工工艺，选择合理的注浆检测技术，对采空区的加固效果至关重要。以某高速公路穿越下伏采空区为依托，阐述了采空区的勘察方案与加固措施。实践证明，该工程加固效果良好。

Survey on Mined-out Area under Highway and Technological Research on Grouting Reinforcement

Mined-out area is one of typical unfavorable geological conditions in highway design. Knowing the role of survey, finding out the distribution of mined-out area, understanding the mechanism of grouting reinforcement, grasping the process of grouting construction, and selecting proper detection technique for grouting effect are most important to reinforcement effect on such area. Depending on the mined-out area under certain highway, the survey plan and reinforcement measures thereof are described. The practical work has proved that the reinforcement effect of this project is good and the research result has important meaning for both mined-out area treated by grouting reinforcement and the design and construction of related parts in highway engineering.