CN217084950U - Tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device - Google Patents
Tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device Download PDFInfo
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- CN217084950U CN217084950U CN202220429311.XU CN202220429311U CN217084950U CN 217084950 U CN217084950 U CN 217084950U CN 202220429311 U CN202220429311 U CN 202220429311U CN 217084950 U CN217084950 U CN 217084950U
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Abstract
The utility model discloses a tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device, including the experiment box, experiment box upper end opening, its four walls are transparent panel, be provided with the intelligent monitor on the experiment box lateral wall, experiment box diapire middle part is provided with an arch gasbag that extends along width direction, the arch gasbag divide into the independent gasbag of multistage, independent gasbag all independently is connected with the air pump, the central point of arch gasbag is provided with port and the communicating column sand body container of experiment box inner space, the lower port of sand body container is provided with the bottom that can open, experiment box both sides bottom is provided with drainage channel, be provided with the sensor in the experiment box, the sensor links to each other with intelligent monitor communication. The utility model discloses a device can be to different grades of joining in marriage, closely knit degree, water level and seepage flow operating mode, and the cavity stratum that arouses because of the tunnel excavation warp and carries out the overall process simulation to tunnel engineering environment stratum cavity deformation simulation experiment data carries out intelligent analysis.
Description
Technical Field
The utility model relates to a civil engineering, concretely relates to tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device.
Background
Due to complex environmental conditions, urban underground engineering faces greater safety risks, and a large number of research results show that: stratum deformation in the construction process is a main source of tunnel engineering safety accidents, and stratum cavities are main reasons of the lagging settlement of urban tunnel engineering strata. With the rapid development of urban traffic engineering in China, the research of the field of stratum settlement mechanism caused by tunnel excavation is developed, and the method has very good engineering and social significance.
Because the space effect of the cavity in the tunnel excavation direction is neglected in the traditional plane strain test, the concrete condition of the stratum cavity deformation in the tunnel construction process can be more accurately reflected by the three-dimensional model test.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned prior art, the utility model provides a tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device to solve current experimental apparatus and neglected the problem of cavity at the space effect of tunnel excavation direction.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device, including the experiment box, experiment box upper end opening, its four walls are transparent panel, be provided with the intelligent monitoring ware on the experiment box lateral wall, experiment box diapire middle part is provided with one along the arch gasbag of width direction extension, the arch gasbag divide into the independent gasbag of multistage, independent gasbag is all independently to be connected with the air pump, the central point of arch gasbag is provided with port and the communicating column sand body container of experiment box inner space, the lower port of sand body container is provided with the bottom that can open, experiment box both sides bottom is provided with drainage channel, be provided with the sensor in the experiment box, the sensor links to each other with intelligent monitoring ware communication.
This practicality adopts above-mentioned technical scheme's beneficial effect is: the experiment box is used for filling rock and soil mass in a layered mode, and the four walls of the experiment box are transparent panels, so that soil layer changes can be observed conveniently. The arch-shaped air bags are used for simulating the tunnel and are arranged into multiple sections of independent air bags, so that the air bags can be unloaded section by section through the air pump during the experiment, and the forward excavation process of the tunnel can be simulated. The columnar sand body container is used for containing sand bodies and simulating vault cavities. The sensor is used for excavating the in-process forward in the tunnel, gives intelligent monitoring ware with various experimental data transmission. The drainage channel is used for simulating soil drainage.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, the one end that drainage channel is located the experiment box outside is provided with the solenoid valve, and the solenoid valve links to each other with intelligent monitoring ware communication.
This practicality adopts above-mentioned further technical scheme's beneficial effect to be: during the experiment, the opening and the closing of the drainage channel can be controlled by the intelligent monitor.
Furthermore, one end of the drainage channel, which is positioned at the inner side of the experiment box body, is provided with a steel wire mesh cushion layer.
This practicality adopts above-mentioned further technical scheme's beneficial effect to be: the steel wire mesh cushion layer can prevent sand from entering the drainage channel and further blocking the valve.
Further, the sensor comprises a displacement sensor, a strain type soil pressure cell and a pore water pressure sensor; the displacement sensors and the strain type soil pressure boxes are arranged in the soil filling layer in the experiment box body in a layered mode; the pore water pressure sensor is arranged at the bottom of the experiment box body and adjacent to the drainage channel.
This practicality adopts above-mentioned further technical scheme's beneficial effect to be: the displacement sensor is used for monitoring the condition that the soil layer moves, the strain soil pressure box is used for monitoring the pressure change condition in the soil layer, and the pore water pressure sensor is used for monitoring the water pressure change of the soil layer.
Furthermore, displacement sensor and strain type soil pressure cell set up the multiunit, and every group all is located the same vertical plane at independent gasbag middle part.
This practicality adopts above-mentioned further technical scheme's beneficial effect to be: the displacement sensor and the strain type soil pressure box are arranged on the same vertical plane and can be used for monitoring displacement and pressure change of a soil layer on the same vertical plane, and a group of displacement sensor and the strain type soil pressure box are arranged in the middle of each independent air bag, so that displacement and pressure change of each part in the soil layer can be better monitored when the air bags are unloaded section by section.
Furthermore, a plurality of displacement sensors and strain type soil pressure cells are arranged in the vertical plane.
This practicality adopts above-mentioned further technical scheme's beneficial effect to be: a plurality of displacement sensors and strain type soil pressure cells are arranged in the same vertical plane, so that displacement and pressure change of soil layers at different positions can be better reflected.
Furthermore, a sand shaping cup is arranged at the upper part of the sand container.
This practicality adopts above-mentioned further technical scheme's beneficial effect to be: the sand body shaping cup is used for shaping a fixed sand body shape and a sand body container.
The utility model has the advantages that: the utility model discloses a device can be to different gradation, closely knit degree, water level and seepage flow operating mode, the cavity stratum deformation that arouses because of the tunnel excavation carries out the overall process simulation, the whole continuous high frequency monitoring of intelligent monitoring ware ability, read and take notes experimental data to carry out intelligent analysis to tunnel engineering environment stratum cavity deformation simulation experimental data, compare in artifical reading record, not only reduced simulation experiment's error, still reduced manpower and materials cost, greatly improved experiment precision and experimental efficiency. The result of the device of the utility model can provide evidences for theoretical and numerical research, provide evidences for on-site monitoring data, and provide the basis for actual engineering measures.
Drawings
FIG. 1 is a front view of the present application;
FIG. 2 is a top view of the present invention;
the device comprises an experiment box body 1, an intelligent monitor 2, a pore water pressure sensor 3, a displacement sensor 4, a strain type soil pressure box 5, an arched air bag 6, an arched air bag 7, a drainage channel 8 and a sand body container.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The embodiment of the utility model provides an in, as shown in fig. 1, 2, provide a tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device, including experiment box 1, 1 upper end openings of experiment box, its four walls are transparent panel. The side wall of the experiment box body 1 is provided with an intelligent monitor 2.
The middle part of the bottom wall of the experiment box body 1 is provided with an arched air bag 6 extending along the width direction, the arched air bag 6 is divided into 4 sections of independent air bags, the independent air bags are all independently connected with an air pump, and the air bags can be unloaded section by section through the air pump so as to simulate the forward excavation process of a tunnel. The central part of the arched air bag 6 is provided with a columnar sand body container 8 with an upper port communicated with the inner space of the experiment box body 1, and the lower port of the sand body container 8 is provided with an openable bottom cover. The columnar sand body container 8 is used for containing sand bodies and simulating vault cavities. The upper part of the sand body container 8 is provided with a sand body shaping cup for shaping the sand body container 8.
The bottom of the two sides of the experimental box body 1 is provided with a drainage channel 7, and preferably, the drainage channels 7 are respectively arranged at the bottom of the left side wall and the bottom of the right side wall of the experimental box body 1 at intervals along the width direction. The one end that drainage channel 7 is located the experiment box 1 outside is provided with the solenoid valve, and the solenoid valve links to each other with intelligent monitoring ware 2 communication. The drainage channel 7 is located 1 inboard one end of experiment box and is provided with the wire net bed course, can prevent that sand from getting into drainage channel 7, and then blocks up the valve.
Be provided with the sensor in the experiment box 1, the sensor links to each other with intelligent monitoring ware 2 communication. The sensors comprise a displacement sensor 4, a strain type soil pressure cell 5 and a pore water pressure sensor 3. The pore water pressure sensor 3 is arranged at the bottom of the experiment box body 1 and adjacent to the drainage channel 7.
The displacement sensors 4 and the strain type soil pressure boxes 5 are arranged into 4 groups, and each group is arranged in a soil filling layer in the same vertical plane in the middle of the independent air bag in a layered mode. Preferably, 10 displacement sensors 4 and 4 strain gauge soil pressure cells 5 are provided along the same vertical plane. The 10 displacement sensors 4 are transversely arranged in the soil mass layer at equal intervals in three layers, and 5 displacement sensors are arranged in the first layer and positioned on the surface of the soil mass layer; 4 second layers are placed and are positioned 40cm below the surface of the soil body layer; and 1 third layer is arranged and is positioned 65cm below the surface of the soil layer. The 4 strain type soil pressure boxes 5 are also distributed in the soil body in three layers, wherein the first strain type soil pressure box is placed at the center of a plane 25cm below the surface of the soil body layer; the second one is placed right below the first one, and is 32cm away from the first one; the last two are symmetrically distributed on both sides of the arch structure 12 and are 87cm away from the surface of the soil body.
The utility model discloses a tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device's experiment preparation process as follows:
1. checking the functionality and the integrity of each connection part of the experiment box body 1, the arched air bag 6 and the intelligent detector, and closing the electromagnetic valves of all the drainage channels 7 through the intelligent detector;
2. according to experimental projects, rock and soil masses which are configured in advance are filled into an experimental box body 1 in a layered mode;
3. filling rock and soil bodies to the arch crown of the arch-shaped air bag 6, filling fine sand into the sand body container 8, fixing the shape of the sand body by using a sand body shaping cup, taking out the sand body shaping cup when the soil is filled to the top of the sand body shaping cup, wherein the size and the shape of the fine sand are the size and the shape of the simulated cavity, and the fine sand can be adjusted according to the requirement;
4. when the soil body is filled to the corresponding height, placing the corresponding test sensor;
5. the intelligent monitor 2 checks whether all sensor lines are connected or not, and the device is debugged.
The test procedure was as follows:
1. debugging the whole set of device, checking whether the lines are normally connected through the intelligent monitor 2;
2. open the drain valve of all drainage channels 7 through intelligent monitoring ware 2, evenly sprinkle water with the sprinkler in experiment box 1 infill soil layer surface, until there is water to ooze a period in the drain valve. After that, sprinkling is performed at intervals. The interval time and the watering time are adjusted according to the stratum and the experimental requirements, and the sand-gravel consolidation process in a natural state is simulated;
3. starting a deformation experiment when the soil filling layer reaches a preset consolidation state;
4. opening an intelligent monitor monitoring system, and starting to continuously read data until the experiment is finished;
5. unloading the air bags section by section through an air pump, digging out sand bodies simulating cavities in the air bags, manufacturing the cavities in the stratum, and measuring the volume of the dug-out sand bodies;
6. observing formation deformation and sensor data change until the cavity collapses;
7. the formation deformation was observed continuously until the system stabilized.
8. The intelligent monitor 2 automatically stops monitoring and intelligently analyzes experimental data after the experiment is finished, and an analysis report can be obtained through signal transmission equipment.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (7)
1. The utility model provides a tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device which characterized in that: the device is characterized by comprising an experiment box body (1), wherein the upper end of the experiment box body (1) is opened, four walls of the experiment box body are transparent panels, an intelligent monitor (2) is arranged on the side wall of the experiment box body (1), an arched air bag (6) extending along the width direction is arranged in the middle of the bottom wall of the experiment box body (1), the arched air bag (6) is divided into a plurality of sections of independent air bags, the independent air bags are independently connected with an air pump, an upper port is arranged at the central part of the arched air bag (6) and is communicated with a columnar sand body container (8) in the inner space of the experiment box body (1), a bottom cover capable of being opened is arranged at the lower port of the sand body container (8), drainage channels (7) are arranged at the bottoms of two sides of the experiment box body (1), a sensor is arranged in the experiment box body (1), and the sensor is communicated with the intelligent monitor (2).
2. The intelligent monitoring device of claim 1, wherein: the drainage channel (7) is located one end of the outer side of the experiment box body (1) and is provided with an electromagnetic valve, and the electromagnetic valve is in communication connection with the intelligent monitor (2).
3. The intelligent monitoring device of claim 2, wherein: and one end of the drainage channel (7) which is positioned at the inner side of the experiment box body (1) is provided with a steel wire mesh cushion layer.
4. The intelligent monitoring device of claim 1, wherein: the sensor comprises a displacement sensor (4), a strain type soil pressure box (5) and a pore water pressure sensor (3); the displacement sensors (4) and the strain type soil pressure boxes (5) are arranged in layers in a soil filling layer in the experiment box body (1); the pore water pressure sensor (3) is arranged at the position, adjacent to the drainage channel (7), of the bottom of the experiment box body (1).
5. The intelligent monitoring device of claim 4, wherein: the displacement sensors (4) and the strain type soil pressure boxes (5) are provided with a plurality of groups, and each group is located on the same vertical plane in the middle of the independent air bag.
6. The intelligent monitoring device of claim 5, wherein: the displacement sensors (4) and the strain type soil pressure boxes (5) are arranged in a plurality along the same vertical plane.
7. The intelligent monitoring device of claim 1, wherein: the upper part of the sand body container (8) is provided with a sand body shaping cup.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220429311.XU CN217084950U (en) | 2022-02-28 | 2022-02-28 | Tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device |
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| CN202220429311.XU CN217084950U (en) | 2022-02-28 | 2022-02-28 | Tunnel engineering environment stratum cavity deformation simulation intelligent monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116298211A (en) * | 2023-05-15 | 2023-06-23 | 西南石油大学 | Test device and method for simulating excavation erosion of water-bearing stratum in near tunnel |
| CN116519569A (en) * | 2023-07-05 | 2023-08-01 | 广东省冶金建筑设计研究院有限公司 | Municipal fill foundation seepage and settlement deformation simulation test and prediction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116298211A (en) * | 2023-05-15 | 2023-06-23 | 西南石油大学 | Test device and method for simulating excavation erosion of water-bearing stratum in near tunnel |
| CN116298211B (en) * | 2023-05-15 | 2023-08-11 | 西南石油大学 | Test device and method for simulating excavation erosion of water-bearing stratum in near tunnel |
| CN116519569A (en) * | 2023-07-05 | 2023-08-01 | 广东省冶金建筑设计研究院有限公司 | Municipal fill foundation seepage and settlement deformation simulation test and prediction method |
| CN116519569B (en) * | 2023-07-05 | 2023-09-15 | 广东省冶金建筑设计研究院有限公司 | Municipal fill foundation seepage and settlement deformation simulation test and prediction method |
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