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Title:
JET-TYPE IN-SITU SOIL SAMPLER
Document Type and Number:
WIPO Patent Application WO/2021/196649
Kind Code:
A1
Abstract:
Disclosed is a jet-type in-situ soil sampler. The jet-type in-situ soil sampler is used for obtaining a soil sample and retaining in-situ characteristics thereof. The soil sampler is provided with: a cut-in mechanism, which is capable of moving downwards along a longitudinal axis to cut into a soil sample, and defining and forming a soil sample collection chamber (S1) on a first radius perpendicular to the longitudinal axis, wherein a soil sample entering the soil sample collection chamber (S1) is covered, on the peripheral surface thereof, in a gel solution to retain the in-situ characteristics thereof; and a drilling mechanism, which applies a force downwards on the cut-in mechanism along the longitudinal axis, and is configured with a waterjet cutter assembly (6) rotating around the longitudinal axis, wherein the waterjet cutter assembly (6) cuts the soil sample along the circumference of a second radius that is larger than the first radius so as to reduce the cut-in resistance of the cut-in mechanism. The soil sampler uses a high-pressure jet flow to cut soil and drill clean holes, and before the soil sample enters a connecting inner cylinder, the gel solution covers the soil sample, such that friction between the soil sample and a side wall of the connecting inner cylinder is significantly reduced, so that disturbance to the soil sample is significantly reduced, and the in-situ characteristics of the soil sample can thus be retained to the greatest extent.

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Inventors:
ZHOU YANGUO (CN)
TIAN YU (CN)
ZHOU XINHUI (CN)
CHEN SHIHAI (CN)
CHEN YUNMIN (CN)
Application Number:
PCT/CN2020/129917
Publication Date:
October 07, 2021
Filing Date:
November 18, 2020
Export Citation:
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Assignee:
UNIV ZHEJIANG (CN)
International Classes:
G01N1/08; E02D1/00; E21B49/00
Foreign References:
CN110792105A2020-02-14
JP2008002065A2008-01-10
CN205228859U2016-05-11
CN111504689A2020-08-07
CN204649465U2015-09-16
CN103835285A2014-06-04
JP5554294B22014-07-23
Attorney, Agent or Firm:
HANGZHOU JOYGO INTELLECTUAL PROPERTY FIRM (CN)
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