CN-224216506-U - Visual test device suitable for water-rich stratum tunnel grouting reinforcement model

CN224216506UCN 224216506 UCN224216506 UCN 224216506UCN-224216506-U

Abstract

The utility model relates to a visual test device suitable for a grouting reinforcement model of a water-rich stratum tunnel, which comprises a support base, a transparent experiment bin, an upper pressure mechanism, a grouting mechanism, a water injection mechanism and a pressure sensor, wherein the transparent experiment bin for loading samples is arranged on the support base, the upper pressure mechanism acts on the upper end face of the transparent experiment bin, one end of the transparent experiment bin in the length direction is provided with a water injection hole, the other end of the transparent experiment bin in the length direction is provided with a plurality of grouting holes capable of being opened or closed, the lower end face is provided with a plurality of monitoring holes and drainage holes capable of being opened or closed, the water injection mechanism is connected with the water injection hole, the grouting mechanism is connected with one grouting hole, and each monitoring hole is connected with one pressure sensor. The utility model has simple structure and convenient operation, can effectively simulate and research the grouting reinforcement visualization process of the water-rich stratum tunnel, can intuitively reflect the diffusion rule of fluid and slurry, has high visualization degree, and belongs to the technical field of civil engineering test devices.

Inventors

ZOU DEXIN
XU DEYI
LAI WEISHENG
YU HANGUO
LEI HUA
HUANG YUCHEN
WEI XINXIN
QIAN ZHENHUA
ZHOU QUAN

Assignees

广州市市政工程机械施工有限公司
广州城市职业学院

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (10)

1. A visual test device suitable for a grouting reinforcement model of a water-rich stratum tunnel is characterized by comprising a support base, a transparent experiment bin, an upper pressure mechanism, a grouting mechanism, a water injection mechanism and a pressure sensor, wherein the transparent experiment bin for loading samples is arranged on the support base, the upper pressure mechanism acts on the upper end face of the transparent experiment bin, one end of the transparent experiment bin in the length direction is provided with a water injection hole, the other end of the transparent experiment bin in the length direction is provided with a plurality of openable or closable grouting holes, the lower end face is provided with a plurality of monitoring holes and openable or closable drainage holes, the water injection mechanism is connected with the water injection hole, the grouting mechanism is connected with one grouting hole, and each monitoring hole is connected with one pressure sensor.
2. The visual test device suitable for the grouting reinforcement model of the water-rich stratum tunnel is characterized by comprising at least three section steel bases, wherein the three section steel bases are sequentially arranged along the length direction of a transparent experimental bin, and the length direction of the section steel bases is perpendicular to the length direction of the transparent experimental bin.
3. The visual test device suitable for the grouting reinforcement model of the water-rich stratum tunnel, which is disclosed in claim 1, is characterized in that the transparent experimental bin is cube-shaped and made of acrylic.
4. The visual test device suitable for the grouting reinforcement model of the water-rich stratum tunnel, which is disclosed in claim 1, is characterized in that the upper pressure mechanism comprises at least three synchronous pressure devices and a section steel frame, the section steel frame is erected above the transparent experiment bin, the three synchronous pressure devices are sequentially arranged along the length direction of the transparent experiment bin, and the synchronous pressure devices are arranged on the section steel frame and are propped against the upper end surface of the transparent experiment bin.
5. The visual test device for the grouting reinforcement model of the water-rich stratum tunnel according to claim 1, wherein the grouting mechanism comprises an electric grouting machine and a grouting pipe, and the electric grouting machine is connected with one grouting hole through the grouting pipe.
6. The visual test device for the grouting reinforcement model of the water-rich stratum tunnel, which is disclosed in claim 1, is characterized in that the water injection mechanism comprises a constant pressure water tank, a water pipe, a flowmeter, a standard pressure gauge and a gate valve, wherein the constant pressure water tank is connected with the water injection hole through the water pipe, and the flowmeter, the standard pressure gauge and the gate valve are arranged in the water pipe.
7. The visual test device for the grouting reinforcement model of the water-rich stratum tunnel, which is disclosed in claim 4, is characterized in that the number of the monitoring holes is at least three, the monitoring holes are sequentially arranged along the length direction of the transparent experimental bin and are arranged at a section near the grouting end, each monitoring hole is connected with a pressure sensor through a rubber hose, and the pressure sensor is arranged on the profile steel frame.
8. A visual test device for a grouting reinforcement model for a water-rich stratum tunnel according to claim 1, wherein the plurality of grouting holes are arranged along a rectangular array.
9. The visual test device for the grouting reinforcement model of the water-rich stratum tunnel according to claim 5, wherein the grouting pipe is a transparent rubber pipe.
10. The visual test device suitable for the grouting reinforcement model of the water-rich stratum tunnel according to claim 4, wherein the upper pressure mechanism further comprises a uniform force plate, the uniform force plate is paved on the upper end surface of the transparent experimental bin, and the synchronous pressure devices are all propped against the uniform force plate.

Description

Visual test device suitable for water-rich stratum tunnel grouting reinforcement model Technical Field The utility model relates to a civil engineering test device, in particular to a visual test device suitable for a grouting reinforcement model of a water-rich stratum tunnel, which is particularly suitable for testing water-rich broken rock. Background In the field of underground engineering, a water-rich broken rock mass is a common bad geological mass, and has poor bearing capacity due to the broken rock mass, water content and the existence of argillaceous cementing substances and weathered fragments, so that great potential safety hazards are brought to the excavation and construction of underground engineering. To cope with this challenge, grouting technology has been widely used in underground works as an effective treatment means, and particularly in water-rich broken formations, a pre-grouting method is widely used to reinforce and improve the water-barrier properties of surrounding rocks so as to ensure safe and stable operation of underground works. When tunnel construction is carried out in a water-rich broken stratum, a grouting technology is often adopted for stratum reinforcement. However, the existing grouting test equipment has the defects that real-time visual observation of a grouting process cannot be realized, water pressure and confining pressure conditions in an actual stratum are difficult to simulate, grouting parameter control accuracy is insufficient, the range of an affected area after grouting and the water head pressure of a tunnel reinforcing section after grouting cannot be accurately estimated, and the test data acquisition automation degree is low. Therefore, the development of the visual experimental study of grouting reinforcement of the water-rich stratum tunnel has important significance. In order to better simulate and research the process and accurately reflect the influence of factors such as water pressure, axial soil pressure and the like on parameters such as slurry diffusion and diffusion speed, a visual device for grouting reinforcement of a water-rich stratum tunnel under different load pressure conditions is needed. Disclosure of utility model Aiming at the technical problems in the prior art, the utility model aims to provide a visual test device suitable for a grouting reinforcement model of a water-rich stratum tunnel, which is used for simulating a grouting reinforcement process under the condition of a water-rich broken stratum, realizing real-time visual observation of the grouting process and providing test basis for the design of grouting parameters of underground engineering. In order to achieve the above purpose, the utility model adopts the following technical scheme: A visual test device suitable for a grouting reinforcement model of a water-rich stratum tunnel comprises a support base, a transparent experiment bin, an upper pressure mechanism, a grouting mechanism, a water injection mechanism and a pressure sensor, wherein the transparent experiment bin for loading samples is arranged on the support base, the upper pressure mechanism acts on the upper end face of the transparent experiment bin, one end of the transparent experiment bin in the length direction is provided with a water injection hole, the other end of the transparent experiment bin in the length direction is provided with a plurality of grouting holes capable of being opened or closed, the lower end face is provided with a plurality of monitoring holes and drainage holes capable of being opened or closed, the water injection mechanism is connected with the water injection hole, the grouting mechanism is connected with one of the grouting holes, and each monitoring hole is connected with one pressure sensor. The support base comprises at least three section steel bases, wherein the three section steel bases are sequentially arranged along the length direction of the transparent experimental bin, and the length direction of the section steel bases is perpendicular to the length direction of the transparent experimental bin. Preferably, the transparent experimental bin is cube-shaped and made of acrylic. As one preferable, the upper pressure mechanism comprises at least three synchronous pressure devices and a section steel frame, wherein the section steel frame is erected above the transparent experiment bin, the three synchronous pressure devices are sequentially arranged along the length direction of the transparent experiment bin, and the synchronous pressure devices are arranged on the section steel frame and are propped against the upper end face of the transparent experiment bin. Preferably, the grouting mechanism comprises an electric grouting machine and a grouting pipe, wherein the electric grouting machine is connected with one grouting hole through the grouting pipe. Preferably, the water injection mechanism comprises a constant pressure water tank, a water pipe, a flowmet