Cone penetration test for facies study: a review

Global Colloquium on GeoSciences and Engineering 2017

Satriyo, N.A.^1 ; Soebowo, E.^1

Research Center for Geotechnology LIPI, Komplek LIPI, Jl. Sangkuriang, Bandung, Indonesia^1

关键词: Cone penetration tests;    Facies distribution;    Grain size analysis;    Physical characteristics;    Quantitative data;    Sediment deposits;    Sequence stratigraphy;    Subsurface layer;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/118/1/012007/pdf
DOI  :  10.1088/1755-1315/118/1/012007

来源: IOP

【 摘 要 】

Engineering geology investigation through Cone Penetration Test (with pore-pressure measurements) approach is one of the most effective methods to find out sub surface layer. This method is generally used in Late Quaternary and typical deposit and can also be used for sedimentological purposes. CPTu and drilling core for high-resolution stratigraphy sub surface have been done in many research. These combined data can also be used to detail correlations of sub surface stratigraphy, to identify facies change and to determine the interpretation of sequence stratigraphy. The determination facies distribution research based on CPTu profile, which was included in quantitative data, is rarely done especially in Indonesia which has a different climate. Whereas drilling core description using grain size analysis will provide information on validation about physical lithology characteristics which are developed in research area. The interpretation is given using CPTu curve pattern and cone resistance parameter of CPTu's data correlated with physical characteristics of drilling core. The cone resistance will provide the strength of the sediment layer which also gives the range of data between clay and sand. Finally, the review will show that each of developing facies characteristic provides a specific curve pattern and every sediment deposit facies can be determined by the transformation of CPTu curve profile. Despite the fact that the research using those methods are quite comprehensive, a review is presented on each of these methods related with the chronologic factor seen by the geological time and different characteristics sediment of different location.