CN112610229A - Soft soil cutter abrasion testing system and method - Google Patents
Soft soil cutter abrasion testing system and method Download PDFInfo
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- CN112610229A CN112610229A CN202011427792.2A CN202011427792A CN112610229A CN 112610229 A CN112610229 A CN 112610229A CN 202011427792 A CN202011427792 A CN 202011427792A CN 112610229 A CN112610229 A CN 112610229A
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- 238000012360 testing method Methods 0.000 title claims abstract description 97
- 239000002689 soil Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005299 abrasion Methods 0.000 title claims abstract description 25
- 230000005641 tunneling Effects 0.000 claims abstract description 44
- 239000006260 foam Substances 0.000 claims abstract description 40
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000003628 erosive effect Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a system and a method for testing abrasion of a soft soil cutter, wherein the technical scheme is as follows: the device comprises a tunneling simulation device, a pressure supply device, a foam generation device, a temperature monitoring module and a data processing system, wherein the tunneling simulation device is used for simulating the tunneling process of a cutter and comprises a test box for filling soil and a cutter arranged in the test box; the cutter is connected with a power device which provides thrust and rotary power for the cutter; the pressure supply device is connected with the test box and used for providing a pressure environment in the test box; the foam generating device is connected with the power device, and foam generated by the foam generating device can enter the interior of the test box; the temperature monitoring module is fixed with the cutter and is used for monitoring the temperature change of the cutter in the tunneling process; the temperature monitoring module is connected with the data processing system. The invention can provide various testing environments and can predict the cutter abrasion problem when the shield machine tunnels in a soft soil stratum.
Description
Technical Field
The invention relates to the technical field of soft soil stratum tunneling, in particular to a soft soil cutter abrasion testing system and method.
Background
In the development process of the underground space, the shield construction has the characteristics of small influence on the ground environment, high construction accuracy, high mechanization degree and larger application range, and becomes a common technical form for tunnel construction at present. And the shield technology is gradually improved, and the shield technology is widely applied to the construction of subway tunnels, municipal works, highway tunnels and the like in various big cities.
However, in the shield method construction process of the soft soil stratum, construction problems such as cutter head cutter abrasion, cutter head mud cake and the like are often encountered, once similar engineering problems are encountered, the tunnel construction efficiency is affected, and even the tunnel is forced to be stopped and repaired, so that the major problems such as tunnel face instability, surface collapse and the like are further caused. The degree of the cutter abrasion of the shield machine in the soft soil stratum directly influences the progress and the cost budget of the shield tunnel project, but at present, equipment and a method for testing the cutter abrasion of the soft soil stratum are lacked, the cutter abrasion in the shield project of the soft soil stratum cannot be effectively predicted, and the high-efficiency construction efficiency and the high-efficiency safety cannot be guaranteed. Therefore, effective prediction of cutter abrasion in the shield tunneling process of the soft soil stratum is one of key problems to be solved in the shield engineering at present.
Aiming at the problems, the invention provides a soft soil cutter abrasion test system, in particular to a test system for simulating cutter abrasion when a shield machine tunnels in a soft soil stratum, which can provide various test environments for predicting the cutter abrasion problem when the shield machine tunnels in the soft soil stratum on site, and further make a solution in advance according to the prediction condition.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a soft soil cutter abrasion testing system and a soft soil cutter abrasion testing method, which can provide various testing environments and can predict the cutter abrasion problem when a shield machine tunnels in a soft soil stratum.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, embodiments of the present invention provide a soft soil cutter erosion testing system, comprising:
the tunneling simulation device is used for simulating the tunneling process of the cutter, and comprises a test box for filling soil and a cutter arranged in the test box, wherein the cutter is connected with a power device for providing thrust and rotary power for the cutter;
the pressure supply device is connected with the test box and used for providing a pressure environment in the test box;
the foam generating device is connected with the power device, and foam generated by the foam generating device can enter the interior of the test box;
the temperature monitoring module is fixed with the cutter and used for monitoring the temperature change of the cutter in the tunneling process; the temperature monitoring module is connected with the data processing system.
As a further implementation mode, the top of the test box is provided with an air inlet and an air outlet, and the air inlet is connected with the pressure supply device.
As a further implementation mode, a supporting plate is arranged at the bottom of the test box and connected with a lifting device.
As a further implementation mode, the power device comprises a rotating shaft connected with the cutter, the rotating shaft is connected with a servo motor, and the servo motor is connected with a lifting mechanism.
As a further implementation mode, the inside of the rotating shaft is of a hollow structure, and one side of the rotating shaft is provided with a foam injection port; the foam generating device is connected with the foam injection opening.
As a further implementation mode, the temperature monitoring module is a temperature sensor, and the temperature sensor is fixed at the center of the bottom surface of the cutter.
As a further implementation mode, the pressure supply device is an air compressor, and a pressure environment of 0-8 bar is provided for the test box through the air compressor.
As a further implementation, the data processing system comprises a computer, and the power device is connected with the computer through a data line.
In a second aspect, an embodiment of the present invention further provides a soft soil cutter abrasion testing method, where the testing system is adopted, and includes:
placing the soil body into a test box;
determining test parameters according to actual shield construction parameters, wherein the test parameters comprise cutter thrust, cutter rotating speed, test box lifting height, test box internal pressure and foam injection amount;
starting a power device to simulate a tunneling process, monitoring temperature change in real time by a temperature monitoring module and transmitting data to a data processing system;
and exhausting the test box after the test is finished.
As a further implementation mode, the thrust and the rotating speed of the cutter are controlled by adjusting the power device, and the lifting height of the test box is adjusted by the lifting device; determining the pressure according to the soil pressure condition, and providing a stable pressure environment by a pressure supply device; foam is injected into the cutter through a rotating shaft by a foam generating device and is mixed with soil.
The beneficial effects of the above-mentioned embodiment of the present invention are as follows:
(1) all power parameters in the tunneling simulation device in one or more embodiments of the invention can be controlled, which is convenient for predicting the cutter wear under different tunneling parameters of the shield tunneling machine;
(2) one or more embodiments of the invention have foam generating devices, can inject foam while the cutter is tunneling, compare with mix soil body place test box go on test accord with actual situation better after improving;
(3) the cutter of one or more embodiments of the invention is provided with a temperature sensor, so that the temperature change condition of the cutter in the tunneling process in the soil body can be monitored in real time; the influence of the temperature on the abrasion of the cutter and the cutter mud cake can be conveniently analyzed;
(4) one or more embodiments of the invention have a pressure supply device, which can provide a certain pressure environment for the test box;
(5) the data processing system of one or more embodiments of the invention can continuously record and display the test parameters and data, so that the result is more accurate and effective, and the analysis of the test result is facilitated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic overall structure diagram of the present invention according to one or more embodiments;
FIG. 2 is a perspective view of a tunneling simulation apparatus according to one or more embodiments of the present invention;
FIG. 3 is a front view of a tunneling simulation apparatus according to one or more embodiments of the present invention;
FIG. 4 is a side view of a tunneling simulation apparatus according to one or more embodiments of the present invention;
figure 5 is a top view of a tunneling simulation apparatus according to one or more embodiments of the present invention;
the device comprises a tunneling simulation device 1, a foam generating device 2, a pressure supply device 3, a temperature monitoring module 4, a data processing system 6, a power device 7, a rotating shaft 8, an air inlet 9, an air outlet 10, a cutter 11, a test box 12, a supporting plate 13 and a lifting device.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting in this application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected directly or indirectly through an intermediate medium, or the two components can be connected internally or in an interaction relationship, and the terms can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows:
the embodiment of the invention provides a soft soil cutter abrasion testing system, which comprises a tunneling simulation device 1, a pressure supply device 3, a foam generating device 2, a temperature monitoring module 4 and a data processing system 5, wherein the tunneling simulation device 1 is used for simulating the tunneling process of a cutter, and the pressure supply device 3 is connected with the tunneling simulation device 1 and is used for providing a pressure environment in the tunneling process; the foam generating device 2 is connected with the tunneling simulation device 1 and is used for generating foam; the temperature monitoring module 4 is used for monitoring temperature change in the tunneling process, and the temperature monitoring module 4 is connected with the data processing system 5.
Specifically, the tunneling simulation device 1 includes a support frame, a test box 11, a power device 6, and a lifting device 13, in this embodiment, the support frame is a frame structure, and it can be understood that in other embodiments, the support frame may also be other structures as long as the support requirements can be met. The inside fixed mounting backup pad of support frame, the top of backup pad is equipped with layer board 12, test box 11 place in layer board 12 top.
The bottom of the supporting plate 12 is connected with a lifting device 13, the supporting plate 12 is driven to ascend through the lifting device 13, meanwhile, the test box 11 ascends to simulate the tunneling process of a cutter head, and the tunneling speed can be controlled to be 0-60 mm/min. The lifting device 13 is made of the prior art, and can be in a structure capable of realizing linear motion.
The test box 11 is a closed box body, which may be cylindrical, cubic or other shape; the top of the test box 11 is provided with an air inlet 8 and an air outlet 9, and the air inlet 8 is connected with the pressure supply device 3 through a pipeline. In this embodiment, supply pressure device 3 to be the air compressor machine, provide 0 ~ 8 bar's pressure environment for the test box through the air compressor machine. In order to facilitate the observation of the test process, in this embodiment, the test box 11 is made of a transparent material, such as tempered glass.
Further, the power device 6 comprises a cutter 10, a rotating shaft 7, a servo motor and a lifting mechanism, wherein the cutter 10 is installed at one end of the rotating shaft 7, the other end of the rotating shaft 7 is connected with the servo motor, and the rotating shaft 7 is driven to rotate through the servo motor to provide rotating power for the cutter 10; in this embodiment, the rotation speed of the cutter 10 is in the range of 0 to 100 rpm.
The servo motor is connected with the lifting mechanism, the servo motor and the cutter 10 are driven by the lifting mechanism to move up and down, and thrust is provided in the process of simulating the tunneling of the cutter 10; in the present embodiment, the thrust of the cutter 10 is in the range of 0 to 5000N. Wherein, elevating system adopts prior art, and this place is no longer repeated.
Further, the inside of the rotating shaft 7 is of a hollow structure, and a foam injection opening is formed in one side of the rotating shaft 7; the foam generating device 2 is connected with the foam injection port through a pipeline. The interior of the cutter 10 is of a hollow structure and is communicated with the interior of the rotating shaft 7; the bottom surface of the cutter 10 is provided with a foam outlet. In this embodiment, the foam generating device 2 is a foam generator, which can inject foam while the cutter 10 is tunneling, and is more practical than the test of placing the improved mixed soil body in the test box 11.
Furthermore, the temperature monitoring module 4 is a temperature sensor fixed at the center of the bottom surface of the cutter 10, so that the temperature change of the cutter 10 in the tunneling process in the soil body can be monitored in real time, and the influence of the temperature on the cutter abrasion and the cutter mud cake can be analyzed conveniently.
The data processing system 5 can continuously record and display the test parameters and data, so that the result is more accurate and effective, and the test result can be conveniently analyzed; the device comprises a computer, wherein a servo motor, a lifting device 13, a lifting mechanism and a temperature sensor are respectively connected with the computer through data lines so as to obtain parameters such as thrust, torque, tunneling speed, rotating speed, pressure, cutter temperature, tunneling position and the like.
The test system of the embodiment can provide various test environments through the pressure supply device, the foam generating device and the like, is used for predicting the cutter abrasion problem of the field shield tunneling machine in the soft soil stratum, and further makes solutions in advance according to the prediction condition. The embodiment can be used as a favorable tool for predicting the wear of the shield tunnel cutter in the soft soil stratum, and the reason of the wear of the cutter and the influence degree can be obtained.
Example two:
the embodiment of the invention also provides a soft soil cutter abrasion testing method, the testing system of the embodiment I is adopted, and the specific testing process is as follows:
firstly, placing a soil body into a test box 11, and determining test parameters according to actual shield construction parameters, wherein the test parameters comprise cutter thrust, cutter rotating speed, test box lifting height, test box pressure and foam injection amount.
The thrust and the rotating speed of the rotating shaft 7 can be regulated and controlled through the power device 6, and the lifting of the test box 11 is controlled through the lifting device 13 connected with the supporting plate 12; the pressure is determined according to the soil pressure condition in the test box 11, and the pressure supply device 3 provides a stable pressure environment for the test box 11 through the air inlet 8; the foam generated by the foam generating device 2 is injected into the cutter 10 along the rotating shaft 7 through the foam injection opening, and then is mixed with the soil body, so that the soil body improvement and the tunneling are simultaneously carried out.
Monitoring the temperature change condition in the tunneling process in real time through a temperature sensor, and transmitting information to a data processing system 5; the data processing system 5 is used for continuously recording and displaying the test results and parameters such as thrust, torque, tunneling speed, rotating speed, pressure, cutter temperature, tunneling position and the like, so that a tester can conveniently analyze the results. After the test is finished, the air is exhausted through the air outlet 9, so that the pressure in the test box 11 is released.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A soft soil cutter erosion testing system, comprising:
the tunneling simulation device is used for simulating the tunneling process of the cutter, and comprises a test box for filling soil and a cutter arranged in the test box, wherein the cutter is connected with a power device for providing thrust and rotary power for the cutter;
the pressure supply device is connected with the test box and used for providing a pressure environment in the test box;
the foam generating device is connected with the power device, and foam generated by the foam generating device can enter the interior of the test box;
the temperature monitoring module is fixed with the cutter and used for monitoring the temperature change of the cutter in the tunneling process; the temperature monitoring module is connected with the data processing system.
2. A soft soil cutter erosion testing system according to claim 1, wherein an air inlet and an air outlet are provided at the top of the testing box, said air inlet being connected to a pressure supply.
3. A soft soil cutter erosion testing system according to claim 1, wherein a support plate is provided at the bottom of the testing box, said support plate being connected to the lifting device.
4. A soft soil cutter erosion testing system according to claim 1, wherein said power means comprises a rotating shaft connected to the cutter, said rotating shaft being connected to a servo motor, said servo motor being connected to a lifting mechanism.
5. The soft soil cutter abrasion testing system according to claim 4, wherein the rotating shaft is hollow inside, and one side of the rotating shaft is provided with a foam injection port; the foam generating device is connected with the foam injection opening.
6. The soft soil cutter erosion testing system of claim 1, wherein the temperature monitoring module is a temperature sensor, and the temperature sensor is fixed in the center of the bottom surface of the cutter.
7. A soft soil cutter abrasion testing system as claimed in claim 1 or 2, wherein the pressure supply device is an air compressor, and a pressure environment of 0-8 bar is provided for the testing box through the air compressor.
8. A soft soil cutter erosion testing system according to claim 1, wherein said data processing system comprises a computer, said power means being connected to said computer by a data line.
9. A soft soil cutter erosion test method, using the test system of any one of claims 1-8, comprising:
placing the soil body into a test box;
determining test parameters according to actual shield construction parameters, wherein the test parameters comprise cutter thrust, cutter rotating speed, test box lifting height, test box internal pressure and foam injection amount;
starting a power device to simulate a tunneling process, monitoring temperature change in real time by a temperature monitoring module and transmitting data to a data processing system;
and exhausting the test box after the test is finished.
10. The soft soil cutter abrasion testing method according to claim 9, wherein the thrust and the rotation speed of the cutter are controlled by adjusting the power device, and the lifting height of the testing box is adjusted by the lifting device; determining the pressure according to the soil pressure condition, and providing a stable pressure environment by a pressure supply device; foam is injected into the cutter through a rotating shaft by a foam generating device and is mixed with soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427792.2A CN112610229A (en) | 2020-12-09 | 2020-12-09 | Soft soil cutter abrasion testing system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427792.2A CN112610229A (en) | 2020-12-09 | 2020-12-09 | Soft soil cutter abrasion testing system and method |
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| Publication Number | Publication Date |
|---|---|
| CN112610229A true CN112610229A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011427792.2A Pending CN112610229A (en) | 2020-12-09 | 2020-12-09 | Soft soil cutter abrasion testing system and method |
Country Status (1)
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| CN (1) | CN112610229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698624A (en) * | 2023-07-20 | 2023-09-05 | 山东大学 | Test method and system for improving internal friction angle and cohesive force of soil by foam |
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| CN116698624A (en) * | 2023-07-20 | 2023-09-05 | 山东大学 | Test method and system for improving internal friction angle and cohesive force of soil by foam |
| CN116698624B (en) * | 2023-07-20 | 2024-05-31 | 山东大学 | Test method and system for improving internal friction angle and cohesive force of soil by foam |
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