A tunnel multi-disaster comprehensive simulation test system

Abstract

The present invention discloses a tunnel multi-disaster comprehensive simulation test system. By setting a comprehensive control unit, a high ground stress simulation unit, a high geothermal simulation unit, a high humidity simulation unit, a water inrush simulation unit, an earthquake disaster simulation unit and a test unit, an accelerated test evaluation of the long-term service reliability and safety of the tunnel project is realized in the laboratory, and the destruction prediction and emergency preparation of multiple disaster factors are realized. The system has the characteristics of comprehensive coverage of disaster factors, multiple combined working conditions, and wide research uses.

Description

Technical Field

[0001] The invention belongs to the technical field of civil engineering tests, and in particular relates to a tunnel multi-disaster comprehensive simulation test system. Background Art

[0002] With the vigorous development of the national economy and the continuous improvement of infrastructure, China's tunnel and underground engineering has been highly developed, and has become the country with the largest scale, fastest speed and greatest difficulty in tunnel and underground engineering construction in the world. China has a vast land area, complex geological conditions and climatic conditions. Tunnel construction and long-term service are faced with complex loads such as high ground stress, high geothermal heat, high soil moisture content and high humidity), strong karst, etc. These complex geological loads seriously threaten the safety of life and property of construction workers and the progress of the project during tunnel construction, and also affect the safety of tunnels in disaster environments such as earthquakes and water inrush. For example, when crossing high-stress areas, geological disasters such as large deformation and damage of soft rocks often occur, which not only cause great difficulties in the design and construction of tunnel projects, but also hide huge safety hazards; high geothermal heat mainly leads to an increase in rock temperature, which not only affects engineering operations, but also causes additional temperature stress, thereby causing cracks in the lining structure and other problems that damage the overall stability of the tunnel project; high humidity accelerates the rusting of rails, reduces the durability of concrete structures, and reduces the reliability of tracks and equipment; in water inrush disasters, a large amount of groundwater suddenly rushes in, posing a serious threat to tunnel construction; earthquake disasters can cause up-and-down and horizontal vibrations in the tunnel, thereby destroying the stability of the structure. In summary, it is very necessary to conduct tunnel disaster simulation tests to study the safety of tunnel engineering under disaster environments.

[0003] At present, most of the relevant tests on tunnel engineering only consider the role of stress field, and only a small number of physical model tests introduce temperature field and stress field at the same time. They do not realize the multi-field coupling under the above-mentioned various environments, nor do they consider the destructive effects of vehicles on tunnel pavement caused by increased traffic volume, increased vehicle axle weight, and increased vehicle speed.

[0004] Therefore, it is urgent to develop a tunnel multi-disaster comprehensive simulation test system to solve the above problems. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a tunnel multi-disaster comprehensive simulation test system.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A tunnel multi-disaster comprehensive simulation test system, comprising:

[0008] An integrated control unit for coordinating and controlling the catastrophic loads of each simulation unit;

[0009] High geostress simulation unit for simulating the circumferential geostress borne by the tunnel;

[0010] A high geothermal simulation unit for simulating the impact of geothermal effects below the tunnel pavement;

[0011] High humidity simulation unit for simulating the effects of hot and humid air in tunnels;

[0012] A water inrush simulation unit for water spray accidents caused by groundwater in the mountain;

[0013] An earthquake disaster simulation unit for simulating earthquake damage to tunnels;

[0014] A test unit for obtaining the actual values ​​of various physical quantities of simulated loading in real time;

[0015] Among them, the output end of the comprehensive control unit is respectively connected to the input end of the high ground stress simulation unit, the input end of the high geothermal simulation unit, the input end of the high humidity simulation unit, the input end of the water inrush simulation unit, and the input end of the earthquake disaster simulation unit; the input end of the comprehensive control unit is connected to the output end of the test unit; the output end of the high ground stress simulation unit, the output end of the high geothermal simulation unit, the output end of the high humidity simulation unit, the output end of the water inrush simulation unit, and the output end of the earthquake disaster simulation unit are all connected to the input end of the test unit.

[0016] Specifically, the integrated control unit includes:

[0017] An interactive module for generating control loading curves from input catastrophe simulation requirements;

[0018] High-speed communication module;

[0019] Real-time computing module;

[0020] Signal modulation module;

[0021] Security protection module;

[0022] Among them, the output end of the interactive module is connected to the input end of the high-speed communication module, the output end of the high-speed communication module is connected to the input end of the real-time operation module, the output end of the real-time operation module is connected to the input end of the signal modulation module, the output end of the signal modulation module is connected to the input end of the high ground stress simulation unit, the input end of the high geothermal simulation unit, the input end of the high humidity simulation unit, the input end of the water inrush simulation unit, and the input end of the earthquake disaster simulation unit, the signal input end of the safety protection module is connected to the output end of the test unit, and the signal output end of the safety protection module is respectively connected to the input end of the real-time operation module and the input end of the interactive module.

[0023] Specifically, the high ground stress simulation unit includes:

[0024] Load-bearing frame;

[0025] Load-bearing plates;

[0026] Electric cylinder;

[0027] The test piece and multiple load-bearing plates are placed inside the load-bearing frame, the electric cylinder is installed on the load-bearing frame, the bottom of the test piece is placed above the high geothermal simulation unit, the bottom of the load-bearing frame is fixedly installed on the high geothermal simulation unit, and multiple load-bearing plates act on the top and three sides of the test piece; each load-bearing plate is connected to the loading rod of the electric cylinder through a ball joint structure;.

[0028] Specifically, the load-bearing plates on the top and three sides of the test piece are arranged in a matrix.

[0029] Specifically, the high geothermal simulation unit includes:

[0030] Support plate;

[0031] The heating plate comprises a filling material, a special-shaped heat exchanger, and a double-core heating wire, wherein the double-core heating wire is wound and installed on the special-shaped heat exchanger, and the filling material covers the special-shaped heat exchanger and the double-core heating wire; the special-shaped heat exchanger passes through the filling material and is connected to the supporting plate for heat transfer;

[0032] Insulation panels;

[0033] Water cooling plate;

[0034] Oil source;

[0035] A temperature sensor for detecting the temperature of the test piece;

[0036] Temperature controller;

[0037] Among them, the bottom of the test piece is placed on a supporting plate, and the supporting plate, heating plate, insulation plate, water cooling plate, and oil source are connected in sequence from top to bottom. The signal output end of the temperature sensor is connected to the signal input end of the temperature controller, and the signal output end of the temperature controller is connected to the signal input end of the double-core heating wire.

[0038] Specifically, the high humidity simulation unit includes:

[0039] Water supply regulating valve;

[0040] Filter water tank; a filter element is installed in the filter water tank;

[0041] Heating water tank; a liquid level sensor and a water tank heater are installed in the heating water tank;

[0042] Steam regulating valve; the steam regulating valve is installed on the air duct between the heating water tank and the open air duct;

[0043] The fan; the air outlet of the fan is connected with the air duct between the heating water tank and the open air duct;

[0044] Humidity controller; the control signal output end of the humidity controller is respectively connected to the control signal input end of the water tank heater, the control signal input end of the steam regulating valve, and the control signal input end of the fan;

[0045] Open air duct;

[0046] Return fan;

[0047] Recycling water tanks;

[0048] The test piece is placed in an open air duct; the water source is connected to the inlet of the filter water tank after passing through the water supply regulating valve, the outlet of the filter water tank is connected to the heating water tank, the heating water tank is connected to the first end of the open air duct through the air duct, and the second end of the open air duct is connected to the recovery water tank through the air duct; the air outlet of the return air fan is connected to the air duct between the open air duct and the recovery water tank.

[0049] Specifically, the water inrush simulation unit includes:

[0050] water supply tank;

[0051] Pipeline pump A;

[0052] High-pressure variable-frequency pump;

[0053] Accumulator;

[0054] Water recovery and filtration device;

[0055] Pipeline pump B;

[0056] Cooling system;

[0057] Among them, the outlet pipe of the water supply tank is connected to the water inlet of the pipeline pump A, the outlet of the pipeline pump A is connected to the water inlet of the high-pressure variable frequency pump, the outlet of the high-pressure variable frequency pump is connected to the water inlet of the accumulator, the water discharged from the outlet of the accumulator acts on the test piece, and the water after the action is input into the water inlet of the water recovery and filtration device, the outlet of the water recovery and filtration device is connected to the water inlet of the cooling system, the outlet of the cooling system is connected to the water inlet of the pipeline pump B, the outlet of the pipeline pump B is connected to the water inlet pipe of the water supply tank, and a water pressure sensor and a water flow rate sensor are installed on the outlet pipe of the accumulator.

[0058] Specifically, the test unit includes:

[0059] Static force sensor assembly;

[0060] Strain gauge assemblies;

[0061] Temperature sensor assembly;

[0062] Humidity sensor assembly;

[0063] Water pressure sensor;

[0064] Water flow rate sensor;

[0065] Accelerometer sensor assembly;

[0066] Displacement sensor assembly;

[0067] Data processing acquisition card;

[0068] Industrial computer;

[0069] Among them, each load-bearing plate is connected to the first end of a static force sensor assembly through a ball joint structure, and the second end of the static force sensor assembly is connected to the loading rod of the electric cylinder; the strain gauge assembly is installed on the test piece; the temperature sensor assembly is installed at the bottom of the test piece; the humidity sensor assembly is installed in the tunnel of the test piece; the water pressure sensor and the water flow rate sensor are installed on the outlet pipe of the accumulator; the acceleration sensor assembly and the displacement sensor assembly are installed on the earthquake disaster simulation unit;

[0070] The signal output end of the static force sensor assembly, the signal output end of the strain gauge assembly, the signal output end of the temperature sensor assembly, the signal output end of the humidity sensor assembly, the signal output end of the water pressure sensor, the signal output end of the water flow rate sensor, the signal output end of the acceleration sensor assembly, and the signal output end of the displacement sensor assembly are all connected to the signal input end of the data processing and acquisition card, and the signal output end of the data processing and acquisition card are respectively connected to the signal input end of the industrial computer and the signal input end of the safety protection module.

[0071] Specifically, the earthquake disaster simulation unit includes:

[0072] Hydraulic source;

[0073] Actuator;

[0074] Control systems;

[0075] Rigid table top;

[0076] Vibration isolation system; the vibration isolation system includes a floating foundation and a vibration isolator; the floating foundation is connected to a fixed building;

[0077] Among them, the test piece is installed above the rigid table, the actuation output ends of multiple sets of actuators are connected to the rigid table, and are used for actuating the rigid table in three-axis directions; the hydraulic source is connected to the actuator through a hydraulic circuit, and the control signal output end of the control system is connected to the control signal input end of the multiple sets of actuators.

[0078] Compared with the prior art, the present invention has the following beneficial effects:

[0079] This application sets up a comprehensive control unit, a high ground stress simulation unit, a high geothermal simulation unit, a high humidity simulation unit, a water inrush simulation unit, an earthquake disaster simulation unit and a test unit; it realizes the accelerated test evaluation of the long-term service reliability and safety of the tunnel project in the laboratory, realizes the destruction prediction and emergency preparedness of multiple disaster factors, and has the characteristics of full coverage of disaster factors, multiple combined working conditions, and wide research uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 It is a schematic diagram of the structure of the tunnel multi-disaster comprehensive simulation test system in this application;

[0081] Figure 2 It is a structural schematic diagram of the high ground stress simulation unit in this application;

[0082] Figure 3 yes Figure 2 Schematic diagram of the structure of part a;

[0083] Figure 4 It is a schematic diagram of the structure of the high geothermal simulation unit in this application;

[0084] Figure 5 It is a schematic diagram of the structure of the heating plate in this application;

[0085] Figure 6 is a schematic diagram of the structure of the high humidity simulation unit in this application;

[0086] Figure 7 It is a block diagram of the integrated control unit in this application;

[0087] Figure 8 It is a schematic diagram of the structure of the test unit in this application;

[0088] Fig. 9 It is the workflow diagram of this application;

[0089] Fig.10 is a schematic diagram of the structure of the water inrush simulation unit in this application;

[0090] Fig.11 is a schematic diagram of the structure of the earthquake disaster simulation unit in this application;

[0091] In the figure:

[0092] 1- integrated control unit, 11- interactive module, 12- high-speed communication module, 13- real-time operation module, 14- signal modulation module, 15- safety protection module,

[0093] 2-high ground stress simulation unit, 21-load-bearing frame, 22-load-bearing plate, 23-electric cylinder;

[0094] 3-high geothermal simulation unit, 31-support plate, 32-heating plate, 33-insulation plate, 34-water cooling plate, 35-oil source, 321-filling material, 322-special-shaped heat transfer device, 323-double-core heating wire,

[0095] 4-high humidity simulation unit, 41-water supply regulating valve, 42-filter water tank, 43-filter element, 44-heating water tank, 45-liquid level sensor, 46-water tank heater, 47-steam regulating valve, 48-humidity controller, 49-fan, 410-open air duct, 412-stress loading system, 413-return fan, 414-recovery water tank,

[0096] 5-water inrush simulation unit, 51-water supply tank, 52-pipeline pump A, 53-high-pressure variable frequency pump, 54-accumulator, 55-regulating valve, 56-water recovery and filtration device, 57-pipeline pump B, 58-cooling system,

[0097] 6- Earthquake disaster simulation unit, 61- Hydraulic source, 62- Actuator, 63- Control system, 64- Rigid table, 65- Vibration isolation system, 66- Floating foundation,

[0098] 8-test unit, 81-static force sensor assembly, 82-strain gauge assembly, 83-temperature sensor assembly, 84-humidity sensor assembly, 85-water pressure sensor, 86-water flow rate sensor, 87-acceleration sensor assembly, 88-displacement sensor assembly, 810-data processing acquisition card, 811-industrial computer, 812-ball joint,

[0099] 9-Test piece. DETAILED DESCRIPTION

[0100] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0101] The present invention provides the following technical solutions:

[0102] like Figure 1 and Figure 7 As shown, a tunnel multi-disaster comprehensive simulation test system comprises:

[0103] An integrated control unit 1 for coordinating and controlling the catastrophic loads of each simulation unit;

[0104] A high ground stress simulation unit 2 for simulating the circumferential ground stress borne by the tunnel;

[0105] High geothermal simulation unit 3 for simulating the influence of geothermal effect under the tunnel pavement;

[0106] High humidity simulation unit 4 for simulating the effect of hot and humid air in the tunnel;

[0107] Water inrush simulation unit 5 for water spray accidents caused by groundwater in the mountain;

[0108] Earthquake disaster simulation unit 6 for simulating earthquake damage to tunnels;

[0109] A test unit 8 for obtaining the actual values ​​of various physical quantities of simulated loading in real time;

[0110] Among them, the output end of the comprehensive control unit 1 is respectively connected to the input end of the high ground stress simulation unit 2, the input end of the high geothermal simulation unit 3, the input end of the high humidity simulation unit 4, the input end of the water inrush simulation unit 5, and the input end of the earthquake disaster simulation unit 6; the input end of the comprehensive control unit 1 is connected to the output end of the test unit 8; the output end of the high ground stress simulation unit 2, the output end of the high geothermal simulation unit 3, the output end of the high humidity simulation unit 4, the output end of the water inrush simulation unit 5, and the output end of the earthquake disaster simulation unit 6 are all connected to the input end of the test unit 8.

[0111] like Figure 7 As shown, the integrated control unit 1 includes:

[0112] An interactive module 11 for generating a control loading curve from input catastrophe simulation requirements;

[0113] High-speed communication module 12;

[0114] Real-time computing module 13;

[0115] Signal modulation module 14;

[0116] Security protection module 15;

[0117] Among them, the output end of the interactive module 11 is connected to the input end of the high-speed communication module 12, the output end of the high-speed communication module 12 is connected to the input end of the real-time operation module 13, the output end of the real-time operation module 13 is connected to the input end of the signal modulation module 14, the output end of the signal modulation module 14 is connected to the input end of the high ground stress simulation unit 2, the input end of the high geothermal simulation unit 3, the input end of the high humidity simulation unit 4, the input end of the water inrush simulation unit 5, and the input end of the earthquake disaster simulation unit 6, the signal input end of the safety protection module 15 is connected to the output end of the test unit 8, and the signal output end of the safety protection module 15 is respectively connected to the input end of the real-time operation module 13 and the input end of the interactive module 11.

[0118] like Figure 2 and Figure 3 As shown, the high ground stress simulation unit 2 includes:

[0119] Load-bearing frame 21;

[0120] Load bearing plate 22;

[0121] Electric cylinder 23;

[0122] The test piece 9 and multiple load-bearing plates 22 are placed inside the load-bearing frame 21, the electric cylinder 23 is installed on the load-bearing frame 21, the bottom of the test piece 9 is placed above the high geothermal simulation unit 3, and the bottom of the load-bearing frame 21 is fixedly installed on the high geothermal simulation unit 3. Multiple load-bearing plates 22 act on the top and three sides of the test piece 9; each load-bearing plate 22 is connected to the loading rod of the electric cylinder 23 through a ball joint structure;.

[0123] like Figure 2 As shown, the load-bearing plates 22 on the top and three sides of the test piece 9 are arranged in a matrix.

[0124] In this embodiment, the tunnel scale model of the test piece is placed inside the load-bearing frame 21, and the bottom of the load-bearing frame 21 is fixedly connected to the experimental platform by bolts. Multiple load-bearing plates 22 are arranged in a matrix to cover the outer surfaces of the top, back and two sides of the test piece. Each load-bearing plate 22 is threadedly connected to the first end of the static force sensor assembly 81 through a ball joint structure, and the second end of the static force sensor assembly 81 is threadedly connected to the loading rod of the electric cylinder 23. The outer shell of each electric cylinder 23 is fixedly connected to the outer surface of the load-bearing frame by bolts.

[0125] The load-bearing plate 22 is connected to the loading rod of the electric cylinder 23 through a ball joint structure. This connection method can achieve a certain angle of flipping and flexible loading. The matrix-type ground stress loading device can realize independent graded loading or coordinated loading of different areas of the test piece, and more realistically simulate the high ground stress of the test piece.

[0126] like Figure 4 and Figure 5 As shown, the high geothermal simulation unit 3 includes:

[0127] Support plate 31;

[0128] The heating plate 32 comprises a filling material 321, a special-shaped heat transfer device 322, and a double-core heating wire 323. The double-core heating wire 323 is wound around the special-shaped heat transfer device 322. The filling material 321 covers the special-shaped heat transfer device 322 and the double-core heating wire 323. The special-shaped heat transfer device 322 passes through the filling material 321 and is connected to the supporting plate 31 for heat transfer.

[0129] Heat insulation board 33;

[0130] Water cooling plate 34;

[0131] Oil source 35;

[0132] A temperature sensor for detecting the temperature of the test piece 9;

[0133] Temperature controller;

[0134] Among them, the bottom of the test piece 9 is placed on the supporting plate 31, the supporting plate 31, the heating plate 32, the insulation plate 33, the water cooling plate 34, and the oil source 35 are connected in sequence from top to bottom, the signal output end of the temperature sensor is connected to the signal input end of the temperature controller, and the signal output end of the temperature controller is connected to the signal input end of the dual-core heating wire 323.

[0135] In this embodiment, the special-shaped heat transfer device is made of aluminum with good thermal conductivity, or improved aluminum metal, etc. The heat of the double-core heating wire does not need to be dissipated from the filling material, but from the special-shaped heat transfer device with better heat transfer performance, so that the heat transfer efficiency is higher and the heat dissipation effect is better. In addition, the special-shaped heat transfer device is in contact with the supporting plate 31 in a unidirectional upward direction, so most of the heat will be transferred upward, and the upper part corresponds to the heated test piece to achieve the purpose of simulating the geothermal environment; the heat transferred downward will be reduced, and the lower part is a vibration table and other equipment, and the temperature rise will not be too high.

[0136] When the present embodiment is working, the temperature sensor transmits the detected real-time temperature to the temperature controller. After the temperature controller obtains the temperature signal from the temperature sensor, it compares it with the load setting temperature, controls and adjusts the voltage of the heating plate, thereby controlling the temperature.

[0137] like Figure 6 As shown, the high humidity simulation unit 4 includes:

[0138] Water supply regulating valve 41;

[0139] A filter water tank 42 is provided with a filter element 43;

[0140] A heating water tank 44; a liquid level sensor 45 and a water tank heater 46 are installed in the heating water tank 44;

[0141] The steam regulating valve 47 is installed on the air duct between the heating water tank 44 and the open air duct 410;

[0142] The fan 49 has an air outlet connected to the air duct between the heating water tank 44 and the open air duct 410;

[0143] Humidity controller 48; the control signal output end of the humidity controller 48 is respectively connected to the control signal input end of the water tank heater 46, the control signal input end of the steam regulating valve 47, and the control signal input end of the fan 49;

[0144] Open air duct 410;

[0145] Return fan 413;

[0146] Recovery water tank 414;

[0147] The test piece 9 is placed in the open air duct 410; the water source is connected to the inlet of the filtered water tank 42 after passing through the water supply regulating valve 41, the outlet of the filtered water tank 42 is connected to the heating water tank 44, the heating water tank 44 is connected to the first end of the open air duct 410 through the air duct, and the second end of the open air duct 410 is connected to the recovery water tank 414 through the air duct; the air outlet of the return air fan 413 is connected to the air duct between the open air duct 410 and the recovery water tank 414.

[0148] In this embodiment, when the system is working, water is drawn from the water source, and after the flow rate is controlled by the water supply regulating valve, it flows into the filter water tank. The filter water tank contains filter elements and other devices to purify the water quality. The purified water is discharged from the filter water tank and flows into the heating water tank. The heating water tank contains a water tank heater, which heats the filtered water at room temperature to form vaporized water vapor. At the same time, the liquid level sensor in the heating water tank detects the liquid level in the heating water tank in real time. When the liquid level is too low, in order to prevent the water tank heater from drying out, an alarm signal will be issued to stop heating. After the pure water after heating becomes water vapor, it flows along the air duct. This section of the air duct is a steam pipe. The steam pipe in the heating water tank adopts an open design, which can more efficiently supply steam. A steam regulating valve is provided in the steam pipe. The steam regulating valve and the water tank heater are both controlled by a humidity controller, which can control the air humidity in real time. At the same time, a fan is provided in the pipeline to mix dry air into the pipeline. At this time, the air components flowing into the open air duct contain water vapor and dry air. The user can adjust the opening of the steam regulating valve according to the required humidity, which is very convenient to control the air humidity in the open air duct. The open air duct is equipped with a test piece, and force loading and other equipment can load the test piece at the opening of the air duct without interfering with it. The back end of the open air duct is equipped with a return fan to control the recovery of humid air, and a recovery water tank is also provided for the steam to condense into droplets for recovery.

[0149] When the high humidity simulation unit is working, the humidity is regulated by mixing water vapor and air in the fan. The opening of the steam regulating valve is used to adjust the percentage of water vapor in the mixed air, thereby achieving the effect of adjusting the humidity in the mixed air. Compared with the traditional humidity control system, which uses complex equipment such as condensers to reduce humidity, this design simplifies the hardware cost. At the same time, the humidity control response is adjusted according to the valve opening, and the humidity adjustment rate is more convenient and quick.

[0150] During the humidity load loading process, in order to avoid interference between the loading devices, the concept of the traditional closed humidity chamber was abandoned and an open air duct was designed. By placing the test piece in the center of the open air duct, the fans and return air fans at both ends of the air duct were used to form a wind field. The water vapor in the wind field achieved a humidity load space field that met the requirements.

[0151] like Fig.10 As shown, the water inrush simulation unit 5 includes:

[0152] Water supply tank 51;

[0153] Pipeline pump A52;

[0154] High-pressure variable frequency pump 53;

[0155] Accumulator 54;

[0156] Water recovery and filtering device 56;

[0157] Pipeline pump B57;

[0158] Cooling system 58;

[0159] Among them, the outlet pipe of the water supply tank 51 is connected to the water inlet of the pipeline pump A52, the outlet of the pipeline pump A52 is connected to the water inlet of the high-pressure variable frequency pump 53, the outlet of the high-pressure variable frequency pump 53 is connected to the water inlet of the accumulator 54, the water outlet of the accumulator 54 acts on the test piece 9, and the water after the action is input into the water inlet of the water recovery and filtering device 56, the outlet of the water recovery and filtering device 56 is connected to the water inlet of the cooling system 58, the outlet of the cooling system 58 is connected to the water inlet of the pipeline pump B57, the outlet of the pipeline pump B57 is connected to the water inlet pipe of the water supply tank 51, and a water pressure sensor 85 and a water flow rate sensor 86 are installed on the outlet pipe of the accumulator 54.

[0160] In this embodiment, the pipeline pump A52 pumps the water in the water supply tank 51 to the high-pressure variable frequency pump 53, and controls the water pressure through the frequency converter speed regulation. The high-pressure variable frequency pump 53 automatically adjusts the overflow valve to output the pressure required by the regulating valve, and the accumulator 54 provides a stable pressure for the regulating valve. The controller controls the output of the regulating valve to achieve the control of water pressure, flow rate, and flow rate. The sudden water that meets the requirements is transported to the required water inrush point of the test piece through the pipeline, and the pressure and flow of the gushing water are measured by the water pressure sensor 85 and the water flow rate sensor 86. All water entering the test platform is processed by the collection and filtration device 56 and then pumped back to the water supply tank 51 by the pipeline pump B57.

[0161] like Figure 3 and Figure 8 As shown, the test unit 8 includes:

[0162] Static force sensor assembly 81;

[0163] Strain gauge assembly 82;

[0164] Temperature sensor assembly 83;

[0165] Humidity sensor assembly 84;

[0166] Water pressure sensor 85;

[0167] Water flow rate sensor 86;

[0168] Acceleration sensor assembly 87;

[0169] Displacement sensor assembly 88;

[0170] Data processing and acquisition card 810;

[0171] Industrial computer 811;

[0172] Each load-bearing plate 22 is connected to the first end of a static force sensor assembly 81 through a ball joint structure, and the second end of the static force sensor assembly 81 is connected to the loading rod of the electric cylinder 23; the strain gauge assembly 82 is installed on the test piece 9; the temperature sensor assembly 83 is installed at the bottom of the test piece 9; the humidity sensor assembly 84 is installed in the tunnel of the test piece 9; the water pressure sensor 85 and the water flow rate sensor 86 are installed on the outlet pipe of the accumulator 54; the acceleration sensor assembly 87 and the displacement sensor assembly 88 are installed on the earthquake disaster simulation unit 6;

[0173] The signal output end of the static force sensor assembly 81, the signal output end of the strain gauge assembly 82, the signal output end of the temperature sensor assembly 83, the signal output end of the humidity sensor assembly 84, the signal output end of the water pressure sensor 85, the signal output end of the water flow rate sensor 86, the signal output end of the acceleration sensor assembly 87, and the signal output end of the displacement sensor assembly 88 are all connected to the signal input end of the data processing and acquisition card 810, and the signal output end of the data processing and acquisition card 810 is respectively connected to the signal input end of the industrial computer 811 and the signal input end of the safety protection module 15.

[0174] like Fig.11 As shown, the earthquake disaster simulation unit 6 includes:

[0175] Hydraulic source 61;

[0176] Actuator 62;

[0177] Control system 63;

[0178] Rigid table 64;

[0179] The vibration isolation system 65 includes a floating foundation 66 and a vibration isolator; the floating foundation 66 is connected to the fixed building;

[0180] Among them, the test piece 9 is installed above the rigid table 64, the actuation output ends of multiple sets of actuators 62 are connected to the rigid table 64, and are used for actuating the rigid table 64 in three-axis directions; the hydraulic source 61 is connected to the actuator 62 through a hydraulic circuit, and the control signal output end of the control system 63 is connected to the control signal input end of the multiple sets of actuators 62.

[0181] In this embodiment, when working, the system controls the electronic control signal, controls the hydraulic source to provide high-pressure hydraulic oil to the actuator, controls the actuator to produce controlled movement, and pushes the rigid table to realize the time domain simulation of seismic waves; the vibration isolator and the floating foundation together constitute a vibration isolation system, which realizes the vibration isolation between the earthquake simulation vibration table and the external buildings, so as to achieve the effect of protecting the external buildings from the influence of vibration.

[0182] like Fig. 9 As shown, the working process of this application is shown, including:

[0183] 1. Preliminary preparation for the test: determine the test project, formulate the outline, design and accept the test pieces;

[0184] 2. Pre-test inspection: prepare the test pieces for initial inspection; inspect and test the load loading system; inspect the crane and sling; and inspect relevant laboratory facilities;

[0185] 3. Product installation: Install the product on the test bench and install and fix the test piece;

[0186] 4. Test assembly: connect sensors and evacuate personnel;

[0187] 5. Formal test: After setting the parameters, keep the load loaded for the specified time, and then unload the load;

[0188] 6. Test disassembly and assembly: Turn off the load loading system; check the appearance, data and test site conditions of the test piece; remove the test piece, fixture, sensor, etc.;

[0189] 7. The experiment is over.

[0190] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel multi-disaster comprehensive simulation test system, characterized in that: include: An integrated control unit (1) for coordinating and controlling the catastrophic loads of each simulation unit; A high ground stress simulation unit (2) for simulating the circumferential ground stress borne by the tunnel; the high ground stress simulation unit (2) comprises: Load-bearing frame (21); Load-bearing plate (22); Electric cylinder (23); The test piece (9) and a plurality of bearing plates (22) are placed inside a bearing frame (21), the electric cylinder (23) is mounted on the bearing frame (21), the bottom of the test piece (9) is placed above the high geothermal simulation unit (3), the bottom of the bearing frame (21) is fixedly mounted on the high geothermal simulation unit (3), and the plurality of bearing plates (22) act on the top and three sides of the test piece (9); each bearing plate (22) is connected to a loading rod of the electric cylinder (23) via a ball joint structure; A high geothermal simulation unit (3) for simulating the influence of geothermal effect under the tunnel pavement; the high geothermal simulation unit (3) comprises: A support plate (31); The heating plate (32) comprises a filling material (321), a special-shaped heat transfer device (322), and a double-core heating wire (323); the double-core heating wire (323) is wound around the special-shaped heat transfer device (322); the filling material (321) covers the special-shaped heat transfer device (322) and the double-core heating wire (323); the special-shaped heat transfer device (322) passes through the filling material (321) and is connected to the supporting plate (31) for heat transfer; Thermal insulation board (33); Water cooling plate (34); Oil source (35); a temperature sensor for detecting the temperature of the test piece (9); Temperature controller; The bottom of the test piece (9) is placed on a supporting plate (31), the supporting plate (31), the heating plate (32), the heat insulation plate (33), the water cooling plate (34), and the oil source (35) are connected in sequence from top to bottom, the signal output end of the temperature sensor is connected to the signal input end of the temperature controller, and the signal output end of the temperature controller is connected to the signal input end of the double-core heating wire (323); A high humidity simulation unit (4) for simulating the effect of hot and humid air in a tunnel; the high humidity simulation unit (4) comprises: Water supply regulating valve (41); A filter water tank (42); a filter element (43) is installed in the filter water tank (42); A heating water tank (44); a liquid level sensor (45) and a water tank heater (46) are installed in the heating water tank (44); Steam regulating valve (47); the steam regulating valve (47) is installed on the air duct between the heating water tank (44) and the open air duct (410); The fan (49) has an air outlet connected to the air duct between the heating water tank (44) and the open air duct (410); A humidity controller (48); a control signal output terminal of the humidity controller (48) is respectively connected to a control signal input terminal of the water tank heater (46), a control signal input terminal of the steam regulating valve (47), and a control signal input terminal of the fan (49); Open air duct (410); Return fan (413); Recycling tank (414); The test piece (9) is placed in the open air duct (410); the water source is connected to the inlet of the filter water tank (42) after passing through the water supply regulating valve (41); the outlet of the filter water tank (42) is connected to the heating water tank (44); the heating water tank (44) is connected to the first end of the open air duct (410) through the air duct; the second end of the open air duct (410) is connected to the recovery water tank (414) through the air duct; the air outlet of the return air fan (413) is connected to the air duct between the open air duct (410) and the recovery water tank (414); A water inrush simulation unit for water burst accidents caused by groundwater in the mountain (5); An earthquake disaster simulation unit (6) for simulating earthquake damage to tunnels; A test unit (8) for obtaining the actual values ​​of various physical quantities of simulated loading in real time; The output end of the integrated control unit (1) is respectively connected to the input end of the high ground stress simulation unit (2), the input end of the high geothermal simulation unit (3), the input end of the high humidity simulation unit (4), the input end of the water inrush simulation unit (5), and the input end of the earthquake disaster simulation unit (6); the input end of the integrated control unit (1) is connected to the output end of the test unit (8); the output end of the high ground stress simulation unit (2), the output end of the high geothermal simulation unit (3), the output end of the high humidity simulation unit (4), the output end of the water inrush simulation unit (5), and the output end of the earthquake disaster simulation unit (6) are all connected to the input end of the test unit (8).

2. A tunnel multi-disaster comprehensive simulation test system according to claim 1, characterized in that: The integrated control unit (1) comprises: An interactive module (11) for generating a control loading curve from input catastrophe simulation requirements; High-speed communication module (12); Real-time computing module (13); Signal modulation module (14); Security protection module (15); The output end of the interactive module (11) is connected to the input end of the high-speed communication module (12), the output end of the high-speed communication module (12) is connected to the input end of the real-time operation module (13), the output end of the real-time operation module (13) is connected to the input end of the signal modulation module (14), the output end of the signal modulation module (14) is connected to the input end of the high ground stress simulation unit (2), the input end of the high ground heat simulation unit (3), the input end of the high humidity simulation unit (4), the input end of the water inrush simulation unit (5), and the input end of the earthquake disaster simulation unit (6), the signal input end of the safety protection module (15) is connected to the output end of the test unit (8), and the signal output end of the safety protection module (15) is respectively connected to the input end of the real-time operation module (13) and the input end of the interactive module (11).

3. The tunnel multi-disaster comprehensive simulation test system according to claim 1 is characterized in that: The load-bearing plates (22) on the top and three sides of the test piece (9) are arranged in a matrix.

4. The tunnel multi-disaster comprehensive simulation test system according to claim 2 is characterized in that: The water inrush simulation unit (5) includes: Water supply tank (51); Pipeline pump A (52); High-pressure variable-frequency pump (53); Accumulator (54); Water recovery filtration device (56); Pipeline pump B (57); Cooling system (58); The water outlet pipe of the water supply tank (51) is connected to the water inlet of the pipeline pump A (52), the water outlet of the pipeline pump A (52) is connected to the water inlet of the high-pressure variable frequency pump (53), the water outlet of the high-pressure variable frequency pump (53) is connected to the water inlet of the accumulator (54), the water outlet of the accumulator (54) acts on the test piece (9), and the water after the action is input into the water inlet of the water recovery and filtering device (56), the water outlet of the water recovery and filtering device (56) is connected to the water inlet of the cooling system (58), the water outlet of the cooling system (58) is connected to the water inlet of the pipeline pump B (57), the water outlet of the pipeline pump B (57) is connected to the water inlet pipe of the water supply tank (51), and a water pressure sensor (85) and a water flow rate sensor (86) are installed on the water outlet pipe of the accumulator (54).

5. The tunnel multi-disaster comprehensive simulation test system according to claim 4 is characterized in that: The test unit (8) includes: Static force sensor assembly (81); Strain gauge assembly (82); Temperature sensor assembly (83); Humidity sensor assembly (84); Water pressure sensor (85); Water flow rate sensor (86); Accelerometer assembly (87); Displacement sensor assembly (88); Data processing acquisition card (810); Industrial computer (811); Each load-bearing plate (22) is connected to a first end of a static force sensor assembly (81) via a ball joint structure, and a second end of the static force sensor assembly (81) is connected to a loading rod of an electric cylinder (23); a strain gauge assembly (82) is mounted on a test piece (9); a temperature sensor assembly (83) is mounted on the bottom of the test piece (9); a humidity sensor assembly (84) is mounted in a tunnel of the test piece (9); a water pressure sensor (85) and a water flow rate sensor (86) are mounted on a water outlet pipe of an accumulator (54); and an acceleration sensor assembly (87) and a displacement sensor assembly (88) are mounted on an earthquake disaster simulation unit (6); The signal output end of the static force sensor assembly (81), the signal output end of the strain gauge assembly (82), the signal output end of the temperature sensor assembly (83), the signal output end of the humidity sensor assembly (84), the signal output end of the water pressure sensor (85), the signal output end of the water flow rate sensor (86), the signal output end of the acceleration sensor assembly (87), and the signal output end of the displacement sensor assembly (88) are all connected to the signal input end of the data processing and acquisition card (810), and the signal output end of the data processing and acquisition card (810) is respectively connected to the signal input end of the industrial control computer (811) and the signal input end of the safety protection module (15).

6. The tunnel multi-disaster comprehensive simulation test system according to claim 1 is characterized in that: Earthquake Disaster Simulation Unit (6) includes: Hydraulic source (61); Actuator (62); Control systems (63); Rigid table (64); A vibration isolation system (65); the vibration isolation system (65) includes a floating foundation (66) and a vibration isolator; the floating foundation (66) is connected to a fixed building; The test piece (9) is installed above the rigid table (64); the actuation output ends of the multiple sets of actuators (62) are connected to the rigid table (64) and are used to actuate the rigid table (64) in three axial directions; the hydraulic source (61) is connected to the actuator (62) via a hydraulic circuit; and the control signal output end of the control system (63) is connected to the control signal input end of the multiple sets of actuators (62).

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