8GUI M W, BOLTON M D, SOGA K, et al. Instrumented borehole drilling using ENPASOL system[C].Proceedings of the 5th Int. Symp. on Field Measurements in Geomechanics. [S.l.]: A. A. Balkema, 1999: 577 - 581.
9FORTUNATI F, PELLEGRINO Gt The use of electronics in the management of site investigation and soil improvement works: principles and applications[C].Geotechnical Site Characterization, Proceedings of the 1st International Conference on Site Characterization-ISC'98. Atlanta, USA: [s.n.], 1998: 359-364.
10SUZUKI Y, SASAO H, NISHI K, et al. Ground exploration system using seismic cone and rotary percussion drill[J]. Journal of Technology and Design, Architectural Institute of Japan, 1995, 1: 180- 184.
