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CN-122016596-A - Test device and test method for impervious performance of vertical shaft structure

CN122016596ACN 122016596 ACN122016596 ACN 122016596ACN-122016596-A

Abstract

The invention belongs to the technical field of constructional engineering, and discloses a device and a method for testing impervious performance of a vertical shaft structure. The vertical shaft structure impermeability test device comprises a test box and a first water pressure sensor, wherein a simulation vertical shaft and a toughness structural layer are arranged in the test box, the simulation vertical shaft is formed by splicing a plurality of arc-shaped duct pieces along the circumferential direction, the toughness structural layer is coated on the outer side of the simulation vertical shaft, a first water injection chamber is arranged between the toughness structural layer and the side wall of the test box, and the first water pressure sensor is arranged on the wall surface of one side, deviating from the simulation vertical shaft, of the toughness structural layer or is arranged in the first water injection chamber. The vertical shaft structure impermeability test device is simple in structure and convenient to operate, and can simulate the vertical shaft structure in a real marine environment, so that the reliability and reliability of a subsequent impermeability test are improved, and an important reference basis is provided for engineering design and site construction.

Inventors

  • CAO DINGFENG
  • OU WEI
  • LI JINYONG
  • GUO CHENGCHAO
  • WANG FUMING
  • DING SHAOWEI

Assignees

  • 中山大学
  • 南平武沙高速公路有限责任公司

Dates

Publication Date
20260512
Application Date
20260210

Claims (10)

  1. 1. Shaft structure impermeability test device, its characterized in that includes: The device comprises a test box, wherein a simulation vertical shaft (1) and a flexible structure layer (2) are arranged in the test box, the simulation vertical shaft (1) is formed by splicing a plurality of arc-shaped duct pieces along the circumferential direction, the flexible structure layer (2) is coated on the outer side of the simulation vertical shaft (1), and a first water injection chamber (3) is arranged between the flexible structure layer (2) and the side wall of the test box; The first water pressure sensor is arranged on the wall surface of one side, deviating from the simulation vertical shaft (1), of the flexible structural layer (2), or is arranged in the first water injection chamber (3).
  2. 2. The shaft structure impermeability test apparatus according to claim 1, characterized in that said shaft structure impermeability test apparatus further includes a second water pressure sensor provided to an inner wall surface of said dummy shaft (1).
  3. 3. The shaft structure impermeability test apparatus according to claim 2, characterized in that said shaft structure impermeability test apparatus further includes a second distributed optical fiber sensor provided on an outer wall surface of said dummy shaft (1).
  4. 4. The shaft structure impermeability test device according to claim 1, characterized in that a detachable partition board (4) is arranged in the test box, the partition board (4) is annularly arranged on the outer side of the simulation shaft (1), a grouting chamber is formed between the partition board (4) and the simulation shaft (1), and the grouting chamber is used for accommodating the ductile structural layer (2) before solidification.
  5. 5. The shaft structure impermeability test apparatus according to claim 4, characterized in that a plurality of mounting grooves (5) are provided on a bottom plate (6) of the test box at intervals along a radial direction of the simulation shaft (1); The plurality of mounting grooves (5) are concentrically surrounded, and the partition plates (4) are clamped in the mounting grooves (5).
  6. 6. The shaft structure permeation resistant performance testing fixture according to claim 4, wherein said grouting chamber is provided with an evacuation port (82).
  7. 7. The shaft structure impermeability test apparatus according to claim 1, further comprising a first distributed optical fiber sensor provided on a wall surface of said ductile structural layer (2) on a side facing away from said dummy shaft (1).
  8. 8. The vertical shaft structure impermeability test device according to claim 1, characterized in that the test box comprises a bottom plate (6), a side wall plate (7) and a cover plate (8), wherein the side wall plate (7) is connected to the bottom plate (6), the cover plate (8) is covered on the first water injection chamber (3) and detachably connected to the side wall plate (7), a first water injection port (81) is formed in the cover plate (8), and the first water injection port (81) is communicated with the first water injection chamber (3).
  9. 9. The shaft structure impermeability test apparatus according to claim 8, further comprising a first liquid injection system (10), said first liquid injection system (10) comprising a first liquid injection pipe (11) and a first pressurizing pump (12), said first pressurizing pump (12) being disposed in said first liquid injection pipe (11), said first liquid injection pipe (11) being inserted in said first water injection port (81).
  10. 10. A method of testing the barrier properties of a shaft structure, characterized in that a shaft structure barrier property testing apparatus according to any one of claims 1 to 9 is used, comprising the steps of: S1, the ductile structural layer (2) is arranged against the outer side wall of the simulation vertical shaft (1); S2, injecting water into the first water injection chamber (3), and maintaining water pressure by using a first pressurizing pump (12); And S3, observing the pressure drop of the first water pressure sensor.

Description

Test device and test method for impervious performance of vertical shaft structure Technical Field The invention relates to the technical field of constructional engineering, in particular to a test device and a test method for impervious performance of a vertical shaft structure. Background The vertical shaft is a common building structure and is common in the fields of mining industry, water conservancy and hydropower, highway and waterway transportation, ocean engineering and the like. The vertical shaft in the field of ocean engineering is called an ocean engineering vertical shaft, and is mainly used for offshore oil and gas development, submarine tunnel construction, ocean observation or resource exploration and other scenes, and the core function of the vertical shaft is to provide a vertical channel so as to realize the transportation of fluids (such as oil, gas and the like), equipment installation or personnel/material transportation. In order to improve the structural strength of the maritime work vertical shaft, resist the damage of high water pressure and impact load, a layer of flexible structure is arranged on the outer side of the vertical shaft in a surrounding mode, the flexible structure generally has strong energy absorption characteristics, and the recovery capacity after deformation is strong, so that the structural strength and the structural safety of the vertical shaft can be effectively improved. In order to avoid seepage damage of external water bodies to the vertical shaft, constructors also need to perform simulation test on the seepage resistance of the flexible structure before performing construction of the flexible structure, but the existing simulation test device performs the seepage resistance test on the material of the flexible structure, so that the real condition of pressure water seepage in the marine vertical shaft cannot be reflected, and the accuracy and reliability of test results in practical application are reduced. Accordingly, there is a need for a shaft structure impermeability test apparatus that addresses the above-identified problems of the prior art. Disclosure of Invention The invention aims to provide the test device and the test method for the seepage resistance of the vertical shaft structure, which have the advantages of simple structure and convenient operation, and can truly restore the seepage condition of the marine vertical shaft structure, thereby providing important reference for engineering design and site construction. To achieve the purpose, the invention adopts the following technical scheme: Shaft structure impervious performance test device includes: The device comprises a test box, wherein a simulation vertical shaft and a toughness structural layer are arranged in the test box, the simulation vertical shaft is formed by splicing a plurality of arc-shaped duct pieces along the circumferential direction, the toughness structural layer is coated on the outer side of the simulation vertical shaft, and a first water injection chamber is arranged between the toughness structural layer and the side wall of the test box; The first water pressure sensor is arranged on the wall surface of one side, deviating from the simulation vertical shaft, of the flexible structural layer, or is arranged in the first water injection chamber. Preferably, the shaft structure impermeability test device further comprises a second water pressure sensor, wherein the second water pressure sensor is arranged on the inner wall surface of the simulated shaft. Preferably, the shaft structure impermeability test device further comprises a second distributed optical fiber sensor, and the second distributed optical fiber sensor is arranged on the outer wall surface of the simulation shaft. Preferably, a detachable partition plate is arranged in the test box, the partition plate is annularly arranged on the outer side of the simulation vertical shaft in a surrounding mode, a grouting chamber is formed between the partition plate and the simulation vertical shaft, and the grouting chamber is used for accommodating the tough structural layer before solidification. Preferably, a plurality of mounting grooves are formed in the bottom plate of the test box at intervals along the radial direction of the simulation vertical shaft; The plurality of mounting grooves are concentrically surrounded, and the partition plates are clamped in the mounting grooves. Preferably, the grouting chamber is provided with an evacuation port. Preferably, the shaft structure impermeability test device further comprises a first distributed optical fiber sensor, wherein the first distributed optical fiber sensor is arranged on the wall surface of one side, away from the simulated shaft, of the ductile structural layer. Preferably, the test chamber comprises a bottom plate, a side wall plate and a cover plate, wherein the side wall plate is connected to the bottom plate, the cover plate is covered on