6ALMER E C. Grouting for pile foundation improvement[ D]. Delft, Netherlands : Delft University, 2001.
7BRUCE D A. Enhancing the performance of large diameter piles by grouting[J]. Grouting Engineering, 1986,19(4) :9-15.
8FLEMING W G K. Improvement of pile performance by base grouting [ J]. Proceedings of the Institution of Civil Engineers: Civil Engineering, 1993,97 (2) : 88-93.