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Electric sampling device and sampling method for large-burial-depth narrow-channel vertical shaft

An electric sampling, narrow channel technology, applied in the direction of earthwork drilling, wellbore/well components, etc., can solve the problems of large soil disturbance and damage, complex operation process, low sampling success rate, etc., to reduce potential safety hazards and improve Sampling efficiency, the effect of reducing labor intensity

Active Publication Date: 2020-12-11
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the technical problems of the above-mentioned undisturbed soil sampling device for vertical shafts with complex operation process, low sampling efficiency, large disturbance and damage to soil and low sampling success rate, the present invention provides a large-scale sampling device with simple structure, little soil disturbance and high degree of automation. Electric sampling device and sampling method for deeply buried narrow channel shaft

Method used

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  • Electric sampling device and sampling method for large-burial-depth narrow-channel vertical shaft

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Effect test

Embodiment 1

[0032] refer to figure 1 , an electric sampling device for a vertical shaft with a large buried depth and narrow channel of the present invention, comprising a sampling mechanism arranged horizontally in the vertical shaft 1 and a lifting mechanism arranged at the top of the vertical shaft for driving the sampling mechanism to lift in the vertical direction; the sampling mechanism It includes a support rod horizontally arranged in the shaft, one end of the support rod is connected with the inner wall of the shaft, and the other end is connected with the inner wall of the shaft through a hydraulic jack 3 and a hollow sampling tube 4 in turn; the fixed end of the hydraulic jack is fixedly connected with the support rod, and the hydraulic pressure A hydraulic pump 5 for driving the telescoping piston rod of the hydraulic jack is arranged on the outside of the jack; the hydraulic jack can drive the sampling tube to move in the horizontal direction. When sampling, the sampling mech...

Embodiment 2

[0043] The sampling method adopts a kind of large buried deep narrow channel shaft electric sampling device described in Embodiment 1, comprising the following steps:

[0044] S1. According to the diameter of the shaft, the length of the support rod is adjusted by rotating the adjacent support rods, so that the overall length of the sampling mechanism is slightly smaller than the diameter of the shaft;

[0045] S2. Set up the lifting mechanism on the top of the shaft, and lower the sampling mechanism to the predetermined sampling position through the lifting mechanism;

[0046] S3, observe the levelness of the sampling mechanism by a spirit level, adjust different wire ropes to keep the sampling mechanism in a horizontal state; then observe the contact situation between the sampling pipe and the backing plate and the inner wall of the shaft through the first camera and the second camera;

[0047] S4. Drive the sampling pipe through the hydraulic jack to press steadily and slow...

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Abstract

The invention discloses an electric sampling device and sampling method for a large-burial-depth narrow-channel vertical shaft. The sampling device comprises a sampling mechanism horizontally arrangedin the vertical shaft and a lifting mechanism arranged at the top of the vertical shaft and used for driving the sampling mechanism to ascend and descend in the vertical direction, wherein the sampling mechanism comprises a supporting rod horizontally arranged in the vertical shaft, one end of the supporting rod is connected with the inner wall of the vertical shaft, and the other end of the supporting rod is connected with the inner wall of the vertical shaft through a hydraulic jack and a hollow sampling pipe in sequence; and the fixed end of the hydraulic jack is fixedly connected with thesupporting rod, and a hydraulic pump is arranged on the outer side of the hydraulic jack. The sampling pipe is slowly inserted into soil in the vertical shaft through the hydraulic jack, the samplingpipe is prevented from disturbing and damaging the soil, the integrity of undisturbed soil is guaranteed as much as possible, subsequent tests are facilitated, and test errors are reduced. Meanwhile,traditional manual operation is replaced, labor intensity is lowered, sampling efficiency is improved, potential safety hazards are reduced, and the device is simple, convenient to disassemble and assemble and capable of saving time and labor.

Description

technical field [0001] The invention relates to the technical field of geotechnical exploration engineering, in particular to an electric sampling device and a sampling method for a shaft with a large buried depth and narrow passage. Background technique [0002] With the acceleration of large-scale engineering construction in construction, municipal, transportation and other industries, the level of survey and design has been developed rapidly, and the requirements for taking soil samples have also increased. At present, for sampling soil, it is often required to keep it in its original state. However, soil is a variety of sediments produced by complex natural environments such as rock weathering, denudation, transportation, and deposition. It is a three-phase system composed of solid matter, water, and gas. The soil structure is relatively loose. During operation, sample packaging, storage, and transportation, it is easy to disturb and destroy its original structural syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/06E21B23/14
CPCE21B49/06E21B23/14Y02E10/20
Inventor 胡亚东马金根李青春王能峰
Owner POWERCHINA CHENGDU ENG
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