2021
DOI: 10.2113/2021/1683781
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In Situ Needle Penetration Test and Its Application in a Sericite Schist Railway Tunnel, Southwest of China

Abstract: The sericite schist is a typical metamorphic soft rock. Large deformation of surrounding rock often occurs in the construction of a tunnel in this stratum. Due to the broken rock mass structure and poor mechanical strength in Baishitou tunnel project of Dalin line of Southwest railway, it is impossible to prepare standard samples for a traditional rock mechanical test. Therefore, we chose penetrometer (SH-70) for an in situ test. Firstly, we monitored the deformation of typical sections and analyzed the charac… Show more

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“…This test method is especially suitable for mudstone. It has become the strength test method of soft rock recommended by the International Rock Mechanics Association (ISRM) [23,24].…”
Section: Penetration Test Of Sample Needle After Simulated Indoor Pilingmentioning
confidence: 99%
“…This test method is especially suitable for mudstone. It has become the strength test method of soft rock recommended by the International Rock Mechanics Association (ISRM) [23,24].…”
Section: Penetration Test Of Sample Needle After Simulated Indoor Pilingmentioning
confidence: 99%