The construction technology of post grouting at the end of bored pile can effectively improve the consolidation effect and bearing capacity of the pile, and at the same time avoid the great loss of human, financial and force caused by the construction difficulty of penetration. It ensures the construction quality and schedule, and enhances the stability and safety of the belt conveyor.In a word, the grouting work of drilling holes has a strong concealment. No matter what factors lead to quality accidents, it is faced with great repair difficulty, and will bring huge additional cost, which will seriously affect the quality and progress of the project. Therefore, in the process of construction of the whole project, it is necessary to strictly control each process, so that the existing quality risks can be effectively eliminated, and the quality of the project can obtain the most effective guarantee.