|
|
|
| A New FullFlow Penetrometer for Strength Test of#br#
Submarine Mud Flow |
| FAN Ning1,ZHAO Wei1,NIAN Tingkai1,2,3,WU Hao1,LU Shuang1 |
1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology,
Dalian 116024, Liaoning, China; 2. Key Laboratory of Marine Hydrocarbon Resources and
Environmental Geology of Ministry of Land and Resources, Qingdao Research Institute of
Marine Geology, Qingdao 266071, Shandong, China; 3. State Key Laboratory for
GeoMechanics and Deep Underground Engineering, China University of Mining and
Technology，Xuzhou 221008, Jiangsu, China |
|
|
|
|
Abstract A new fullflow penetrometer is proposed based on the fullflow 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 fullflow 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 simulationsoil submarine slide.
|
|
Published: 03 April 2017
|
|
|
|
|
|
|
|
|
