Article

A New Full-Flow Penetrometer for Strength Test of Submarine Mud Flow

Authors:
  • 大连理工大学
  • Institute of Mountain Hazards & Environment, CAS
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Abstract

A new full-flow penetrometer is proposed based on the full-flow testing mechanism, since there is a lack of proper strength test devices of submarine mud flow with low strength and high moisture content. The instrument structures and load measuring elements are significantly improved to effectively measure the undrained shear strength, residual strength with different disturbing degrees. Verifications are also carried out by comparisons of the strength values obtained from the new full-flow penetrometer and the routine one under the condition of 100g centrifuge model tests and 1g conventional gravity experiments, respectively. The results show that the working performance of new penetrometer is reliable and stable. Also, the new device is successfully used to measure the cycling strength of seafloor mud flow formed by fine grained simulation-soil submarine slide. © 2017, Shanghai Jiao Tong University Press. All right reserved.

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