Visual dynamic monitoring test device for whole-process transportation of shield muck

Abstract

The utility model discloses a visualized dynamic monitoring test device for whole-process transportation of shield muck, which relates to the technical field of shield test equipment and comprises a visualized pressurization system and a visualized muck transportation system. The visual pressurization system comprises an air pump, the top of the air pump is fixedly connected and communicated with one end of a conveying pipeline, and the other end of the conveying pipeline is fixedly connected and communicated with a soil bin; the visual muck transporting system comprises a spiral conveyor communicated with the bottom of the soil bin, the spiral conveyor is in a segmented mode and is obliquely arranged, a barrel lower portion soil pressure sensor is installed at the end, close to the soil bin, in the spiral conveyor, and a barrel upper portion soil pressure sensor is installed at the end, away from the soil bin, in the spiral conveyor. Pressure values of the bottom and the top of the spiral conveyor can be easily mastered through the barrel lower portion soil pressure sensor and the barrel upper portion soil pressure sensor in the spiral conveyor, then whether the spewing symptom occurs or not is judged, and the device has the advantages of being small in size, convenient to operate and variable in multiple parameters.

Description

Technical Field

[0001] The utility model relates to the technical field of shield test equipment, in particular to a visual dynamic monitoring test device for the whole process of shield muck transportation. Background Technique

[0002] In recent years, with the continuous development of cities, the increasingly crowded ground traffic in major cities in China has made the development and utilization of underground rail transit an inevitable trend in the future. The shield tunneling method has the advantages of safety, high efficiency and wide adaptability, and is widely used in domestic rail transit construction. Among them, the earth pressure balance shield is widely used for the construction of tunnel sections on land due to its low construction cost, simple operation, less occupation of ground space and wide adaptability to strata.

[0003] During the tunneling process of the earth pressure balance shield, the construction unit will flexibly apply three tunneling methods according to the change of geological conditions: full bin tunneling, empty bin tunneling (the principle is the same as that of the open type), and non-full bin tunneling. Among them, full bin tunneling is the standard earth pressure balance method. For empty bin and non-full bin tunneling, air pressure is often supplemented to balance the water pressure and reduce the seepage of the formation into the soil bin, which also has the advantages of reducing the wear of the cutter head and tools of the shield machine and the construction load, and improving the tunneling efficiency. However, at present, we have less research on the transportation law of muck on the screw conveyor in the full bin and non-full bin states, and the conventional soil bin and screw conveyor cannot observe the internal muck transportation state in real time.

[0004] Therefore, the utility model provides a visual dynamic monitoring test device for the whole process of shield muck transportation to solve the problems existing in the above-mentioned prior art. Content of the Utility Model

[0005] To achieve the above object, the utility model provides the following solution: The utility model provides a visual dynamic monitoring test device for the whole process of shield muck transportation, including a visual pressurization system and a visual muck transportation system;

[0006] The visual pressurization system includes an air pump, the top of the air pump is fixedly connected and communicated with one end of a conveying pipeline, and the other end of the conveying pipeline is fixedly connected and communicated with a soil bin;

[0007] The visual muck transportation system includes a screw conveyor communicated with the bottom of the soil bin, the screw conveyor adopts a segmented mode, the screw conveyor is inclined, a soil pressure sensor at the lower part of the cylinder is installed at one end of the screw conveyor close to the soil bin, and a soil pressure sensor at the upper part of the cylinder is installed at one end of the screw conveyor far from the soil bin.

[0008] Preferably, the screw conveyor includes an outer wall of the screw conveyor communicating with the bottom of the soil bin. Both the lower soil pressure sensor and the upper soil pressure sensor of the cylinder are installed inside the outer wall of the screw conveyor. A driving rotating shaft is rotatably connected inside the outer wall of the screw conveyor. A plurality of screw blades are installed on the driving rotating shaft. The driving rotating shaft and the screw blades are integrally arranged and form an angle with each other.

[0009] Preferably, the driving rotating shaft is connected in sections, and adjacent sections of the driving rotating shaft are connected by threads.

[0010] Preferably, a slag discharge pipe is fixedly connected and communicated with the bottom of the outer wall of the screw conveyor, and a flowmeter is installed on the slag discharge pipe.

[0011] Preferably, a muck collection box is arranged below the slag discharge pipe.

[0012] Preferably, a modifier injection pipe is fixedly connected and communicated with the top of the outer wall of the screw conveyor.

[0013] Preferably, a pressure gauge is installed on the top surface of the soil bin, and a pressure relief valve is installed on one side of the top surface of the soil bin away from the pressure gauge.

[0014] Preferably, both the soil bin and the outer wall of the screw conveyor are made of transparent organic glass.

[0015] The present invention discloses the following technical effects: During use, turn on the air pump to inject air pressure into the soil bin, and turn on the screw conveyor to observe the movement law of the muck under full bin, half bin, and 1 / 3 bin conditions. The air pressure and the power of the screw conveyor can be paused, and the segmented screw conveyor can be taken out to observe the distribution of the muck in the cross-sectional state. At the same time, always observe the lower soil pressure sensor and the upper soil pressure sensor of the cylinder to judge whether there are signs of gushing. The present invention is divided into two parts, and the two parts can work independently, which can better meet the operations such as filling soil samples of the device and ensure the accuracy of the test results. The lower soil pressure sensor and the upper soil pressure sensor inside the screw conveyor can easily master the pressure values at the bottom and top of the screw conveyor, and then judge whether there are signs of gushing. The present invention has the advantages of small volume, portable operation, and variable multi-parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0017] Figure 1 is a structural schematic diagram of the present invention;

[0018] In the figure: 1. air pump; 2. soil bin; 3. pressure gauge; 4. pressure relief valve; 5. improver injection pipe; 6. slag discharge pipe; 7. flow meter; 8. slag collection box; 9. outer wall of screw conveyor; 10. conveying pipeline; 11. spiral blades; 12. driving shaft; 13. soil pressure sensor at the bottom of the cylinder; 14. soil pressure sensor at the top of the cylinder. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Reference Figure 1 As shown, this embodiment provides a visual dynamic monitoring test device for the whole process of shield slag movement, including a visual pressurization system and a visual slag movement system;

[0022] The visual pressurization system includes an air pump 1, the top of which is fixedly connected to and communicated with one end of a delivery pipeline 10, and the other end of the delivery pipeline 10 is fixedly connected to and communicated with a soil bin 2;

[0023] The visualized slag transportation system includes a screw conveyor connected to the bottom of the soil bin 2. The screw conveyor adopts a segmented mode and is tilted. A lower cylinder soil pressure sensor 13 is installed at one end of the screw conveyor close to the soil bin 2, and an upper cylinder soil pressure sensor 14 is installed at the other end of the screw conveyor away from the soil bin 2.

[0024] When in use, turn on the air pump 1, inject air pressure into the soil bin 2, and turn on the screw conveyor to observe the movement rules of the slag under the full bin, half bin, and 1 / 3 bin. The conveying air pressure and the power of the screw conveyor can be suspended, and the segmented screw conveyor can be taken out to observe the distribution of the slag under the cross-sectional state; at the same time, always observe the earth pressure sensor 13 at the bottom of the cylinder and the earth pressure sensor 14 at the top of the cylinder to determine whether there are signs of eruption. The utility model is divided into two parts, and the two parts can work separately, which can better meet the device for operations such as filling soil samples, and ensure the accuracy of the test results; the earth pressure sensor 13 at the bottom of the cylinder and the earth pressure sensor 14 at the top of the cylinder in the screw conveyor can easily grasp the pressure values ​​at the bottom and top of the screw conveyor, and then determine whether there are signs of eruption; the utility model has the advantages of small size, portable operation, and variable parameters.

[0025] For a further optimized solution, the screw conveyor includes an outer wall 9 of the screw conveyor that communicates with the bottom of the soil bin 2. The soil pressure sensor 13 at the lower part of the cylinder body and the soil pressure sensor 14 at the upper part of the cylinder body are both installed inside the outer wall 9 of the screw conveyor. A driving rotating shaft 12 is rotatably connected inside the outer wall 9 of the screw conveyor. A number of screw blades 11 are installed on the driving rotating shaft 12. The driving rotating shaft 12 and the screw blades 11 are integrally arranged and form an angle with each other. By driving the driving rotating shaft 12 to drive the screw blades 11 to rotate rapidly, the larger the angle between the screw blades 11 and the driving rotating shaft 12, the longer the moving distance of the material.

[0026] For a further optimized solution, the driving rotating shaft 12 is connected in sections, and adjacent sections of the driving rotating shaft 12 are connected by threads. The sectional mode is convenient for pausing and taking out during the test process, analyzing the cross-sectional distribution of the muck, and cleaning the test device.

[0027] For a further optimized solution, a slag discharge pipe 6 is fixedly connected and communicated with the bottom of the outer wall 9 of the screw conveyor. A flowmeter 7 is installed on the slag discharge pipe 6. The setting of the flowmeter 7 is convenient for data statistics.

[0028] For a further optimized solution, a muck collection box 8 is provided below the slag discharge pipe 6. After the muck in the screw conveyor is discharged through the slag discharge pipe 6, it is collected by the muck collection box 8.

[0029] For a further optimized solution, a modifier injection pipe 5 is fixedly connected and communicated with the top of the outer wall 9 of the screw conveyor. If the pressure values of the soil pressure sensor 13 at the lower part of the cylinder body and the soil pressure sensor 14 at the upper part of the cylinder body exceed the warning value, it is necessary to adjust the muck modification parameters. At the same time, by injecting a modifier into the modifier injection pipe 5 on the outer wall 9 of the screw conveyor, a soil plug effect is formed to prevent gushing.

[0030] For a further optimized solution, a pressure gauge 3 is installed on the top surface of the soil bin 2, and a pressure relief valve 4 is installed on one side of the top surface of the soil bin 2 away from the pressure gauge 3. The settings of the pressure gauge 3 and the pressure relief valve 4 can control the size of the pressure in the soil bin 2 in real time.

[0031] For a further optimized solution, both the soil bin 2 and the outer wall 9 of the screw conveyor are made of transparent organic glass. Using transparent organic materials can facilitate directly observing the movement law of the muck in the full bin and non-full bin, and can more intuitively feel the movement of the muck in the screw conveyor, and can see the existence of the soil sample and the void area during the test process.

[0032] Working principle:

[0033] Before the test starts, take out the prepared soil samples and place them into the full bin, half bin, and 1 / 3 bin respectively. After that, close the modifier injection pipe 5 and the slag discharge pipe 6, calibrate the pressure gauge 3 on the soil bin 2. After calibration, record the reading of the pressure gauge 3, turn on the air pump 1, inject air pressure into the soil bin 2, and turn on the screw conveyor to observe the movement law of the muck under the full bin, half bin, and 1 / 3 bin, and record the data of the pressure gauge 3 and the flowmeter 7 in real time. Also, it is possible to pause the conveying air pressure and the power of the screw conveyor, take out the sectional screw conveyor, and observe the distribution of the muck in the cross-sectional state. Adjust the test soil sample by adding soil samples with large particles and observe the movement law of the large particles under the full bin, half bin, and 1 / 3 bin. And in combination with the modifier injection pipe 5, through the visualization screw conveyor, study the influence of the modifier on the movement law of the muck. Take the engineering muck soil sample, observe its movement law under the full bin, half bin, and 1 / 3 bin, constantly observe the soil pressure sensor 13 at the lower part of the cylinder and the soil pressure sensor 14 at the upper part of the cylinder to judge whether there are signs of gushing. At the same time, inject the modifier into the screw conveyor through the modifier injection pipe 5 to form a soil plug effect to prevent gushing from occurring.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0035] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A visual dynamic monitoring test device for the whole process of shield slag movement, characterized by: Including visual pressurization system and visual slag transportation system; The visualized pressurizing system comprises an air pump (1), the top of the air pump (1) is fixedly connected to and communicated with one end of a conveying pipeline (10), and the other end of the conveying pipeline (10) is fixedly connected to and communicated with a soil bin (2); The visualized slag transport system comprises a screw conveyor connected to the bottom of the soil bin (2), the screw conveyor adopts a segmented mode, the screw conveyor is arranged obliquely, a cylinder lower soil pressure sensor (13) is installed at one end of the screw conveyor close to the soil bin (2), and a cylinder upper soil pressure sensor (14) is installed at one end of the screw conveyor away from the soil bin (2).

2. The visual dynamic monitoring test device for the whole process of shield slag movement according to claim 1 is characterized by: The screw conveyor comprises a screw conveyor outer wall (9) connected to the bottom of the soil bin (2); the soil pressure sensor (13) at the bottom of the cylinder and the soil pressure sensor (14) at the top of the cylinder are both installed in the screw conveyor outer wall (9); a driving shaft (12) is rotatably connected in the screw conveyor outer wall (9); a plurality of spiral blades (11) are installed on the driving shaft (12); the driving shaft (12) and the spiral blades (11) are integrally arranged and form an angle with each other.

3. The visual dynamic monitoring test device for the whole process of shield slag movement according to claim 2 is characterized by: The driving shaft (12) is connected in sections, and two adjacent sections of the driving shaft (12) are connected by threads.

4. The visual dynamic monitoring test device for the whole process of shield slag movement according to claim 2 is characterized by: The bottom of the outer wall (9) of the screw conveyor is fixedly connected to and communicated with a slag discharge pipe (6), and a flow meter (7) is installed on the slag discharge pipe (6).

5. The visual dynamic monitoring test device for the whole process of shield slag movement according to claim 4 is characterized by: A slag collecting box (8) is provided below the slag discharge pipe (6).

6. The visual dynamic monitoring test device for the whole process of shield slag movement according to claim 2 is characterized by: The top of the outer wall (9) of the screw conveyor is fixedly connected to and communicated with a modifier injection pipe (5).

7. The visual dynamic monitoring test device for the whole process of shield slag movement according to claim 1 is characterized by: A pressure gauge (3) is installed on the top surface of the soil bin (2), and a pressure relief valve (4) is installed on the side of the top surface of the soil bin (2) away from the pressure gauge (3).

8. The visual dynamic monitoring test device for the whole process of shield slag movement according to claim 1 is characterized by: The soil bin (2) and the outer wall (9) of the screw conveyor are both made of transparent organic glass.

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