Geophysics-assisted Control and Evaluation of Geotechnical Construction-Jet Grouting
There is an increasing demand in geotechnical construction business for process monitoring and construction control.The non-destructive nature and subsurface imaging capability of geophysical methods are what is needed for such applications.Jet grouting in particular is an important underground construction technique that channels cement grout suspension with a high pressure jet nozzle into surrounding soils to cut through the soils and form a soilcrete column.This paper uses jet grouting as an example to demonstrate the importance of fully taking engineering considerations into account for the planning and interpretation of geophysical surveys.The in-hole ERT (electrical resistivity tomography) is proposed to assess diameter profile of soilcrete column,which is critical in pilot construction and when jet grouting is used to create a barrier.For evaluating the overall area replacement ratio (degree of reinforcement) when jet grouting is used to reinforce soft soils, seismic surface wave is suggested.For both purposes, quantitative interpretation with engineering precision is proposed.
Geotechnical Construction Process Monitoring Construction Control Jet Grouting
Chih-Ping Lin Chun-Hung Lin Po-Lin Wu Hsin-Chan Liu
National Chiao Tung University, Taiwan, China National Sun Yat-sen University, Taiwan, China
国际会议
杭州
英文
644-650
2018-06-10（万方平台首次上网日期，不代表论文的发表时间）