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Heading machine excavation cabin pressure measuring system and application method thereof

The technology of a measurement system and application method, which is applied in the field of water and soil pressure measurement, can solve problems such as the inability to accurately measure the soil pressure in the excavation cabin, and achieve the effect of avoiding gushing and working safely and stably

Active Publication Date: 2020-12-22
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the above-mentioned background technology, the present invention proposes a pressure measurement system for excavation chamber of roadheader and its application method, which solves the technical problem that the existing earth pressure sensor cannot accurately measure the soil pressure in the excavation chamber

Method used

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  • Heading machine excavation cabin pressure measuring system and application method thereof
  • Heading machine excavation cabin pressure measuring system and application method thereof
  • Heading machine excavation cabin pressure measuring system and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Embodiment 1, a kind of roadheader excavation chamber pressure measurement system, such as figure 1 and 2 As shown, it includes an earth pressure sensor 1 arranged in the excavation cabin, the earth pressure sensor 1 is equipped with a flushing system, and the nozzle 9 of the flushing system leads to the detection surface of the earth pressure sensor 1 . By controlling the scouring system, the detection surface of the earth pressure sensor 1 can be cleaned quantitatively or indefinitely at regular intervals or in real time, so as to avoid the problem of inaccurate pressure monitoring readings caused by dregs wrapping the detection surface of the earth pressure sensor 1 .

[0044] Specifically, the spray head 9 leads to the detection surface of the earth pressure sensor 1 along the side wall of the earth pressure sensor 1 , and the washing medium passing through the spray head 9 will wash the detection surface of the earth pressure sensor 1 . or, as in figure 2 As sho...

Embodiment 2

[0047] Embodiment 2, a kind of excavation cabin pressure measurement system of roadheader, such as figure 2 , 4 , 5, the inner side of the guide plate 10 is provided with a groove 10-2, the space surrounded by the groove 10-2 is used for the circulation of the flushing medium, and the groove wall 10-3 of the groove 10-2 is U The two side walls are inclined outwards, and the opening between the two side walls is the guide port 10-1 close to the earth pressure sensor 1. The inclined U-shaped structure enables the flushing medium flowing out from the nozzle 9 to expand along the front end of the front shield partition 11, and can flush the muck in a wide range of the detection surface of the earth pressure sensor 1, further ensuring the flushing effect.

[0048] Other structures of this embodiment are the same as those of Embodiment 1.

Embodiment 3

[0049] Embodiment 3, a pressure measurement system for an excavation chamber of a roadheader, the guide plate 10 includes a baffle 10-4 corresponding to the contour of the groove wall 10-3, that is, the baffle 10-4 is approximately fan-shaped as a whole, and one end of the baffle is Arc-shaped, the orthographic projection of the side of the baffle plate 10-4 close to the earth pressure sensor 1 is a concave arc-shaped edge 10-5, and the inner side of the arc-shaped edge 10-5 is provided with chamfers. The edge of the guide plate 10 is set in an arc shape, so as to facilitate the relative movement of the muck and prevent it from bearing the larger shearing force of the muck. The outer surface of the baffle plate 10-4 is provided with a wear-resistant layer to prevent the dregs in the excavation cabin from wearing the baffle plate 10-4.

[0050] Other structures of this embodiment are the same as Embodiment 1 or 2.

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Abstract

The invention discloses a heading machine excavation cabin pressure measuring system and an application method thereof, and solves the technical problem that an existing earth pressure sensor cannot accurately measure the earth pressure of an excavation cabin. The heading machine excavation cabin pressure measuring system comprises an earth pressure sensor arranged in an excavation cabin, the earth pressure sensor is provided with a flushing system, and a nozzle of the flushing system leads to a detection surface of the earth pressure sensor. The soil pressure sensor with wrong reading can bescoured, muck accumulated on the front portion of the soil pressure sensor is scoured cleanly, and therefore the water and soil pressure of an excavation cabin can be measured more accurately. The application method of the heading machine excavation cabin pressure measuring system can automatically judge whether the reading of the earth pressure sensor is wrong or not, can automatically flush theearth pressure sensor with the wrong reading, can monitor the flushing flow in real time, can be matched with the muck viscosity in real time, and can reasonably adjust the flushing amount on the premise of not influencing the viscosity of the muck.

Description

technical field [0001] The invention belongs to the technical field of water and soil pressure measurement, in particular to a pressure measurement system for an excavation chamber of a roadheader and an application method thereof. Background technique [0002] During the construction process of the tunnel boring machine, in order to accurately grasp the soil pressure of the excavation cabin, an earth pressure sensor is installed on the front shield diaphragm. The contact stress between the front shield diaphragm and the soil medium and the force state of the soil layer can be obtained by using the earth pressure sensor, so as to evaluate the working state of the roadheader. [0003] However, in the construction process at this stage, the problem of inaccurate readings of the earth pressure sensor on the partition is often encountered. For example, the reading of the earth pressure sensor does not increase with the depth of the face, or the reading of a certain pressure sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00E21D9/00E21D9/087B08B3/02
CPCG01L5/0061E21D9/003E21D9/087B08B3/02
Inventor 任丽娜冯志鹏庞培彦赵雅琨杨承璋闫阳
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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