Ventilation simulation environment test system and test method for double-hole tunnel construction
Through the ventilation simulation environment test system of double-hole tunnel construction, the high temperature, high humidity, high dust and high harmful gas environment are simulated, and the ventilation effect and purification device performance are tested, which solves the data accuracy and disposal effect problems in complex environments in tunnel construction, and improves the Test efficiency and data support.
Patent Information
- Application Number
- CN202310903583.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-22
- Publication Date
- 2024-12-27
AI Technical Summary
In tunnel construction, in complex environments of high temperature and high humidity, high dust and high concentration of harmful gases, the existing technology is difficult to effectively deal with, resulting in high test costs, low data accuracy and poor disposal effect, and existing dust removal and purification trolleys The inspection scenario is single and its purification effect cannot be fully tested.
Design a double-hole tunnel construction ventilation simulation environment test system, including dust source, harmful gas source, blower, exhaust fan, purification and dust removal trolley and tunnel environmental parameter detection module. By simulating the actual tunnel environment, the ventilation effect and purification device are studied. Performance, use on-site measured data to set environmental parameters and conduct targeted testing.
It realizes accurate simulation of construction ventilation effects in high temperature, high dust and high humidity environments and performance testing of dust removal and purification devices, providing data support for improving the tunnel construction environment, and improving the accuracy and efficiency of the test.
Smart Images
Figure CN119195829A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a double-hole tunnel construction ventilation simulation environment test system and a test method. Background Art
[0002] At present, with the continuous improvement of the level of tunnel engineering construction, more and more long highways, railways, municipal and submarine tunnels have begun to be built or put into use. In the process of tunnel construction, the state and enterprises have higher and higher requirements for the tunnel construction environment. Faced with the problem of how to improve the tunnel construction environment under high standards, the dust, harmful gases and exhaust gas emitted by construction machinery generated by tunnel blasting construction are mainly improved by strengthening construction ventilation and using air purification trolleys. The high rock temperature and high water temperature during tunnel construction are mainly improved by strengthening construction ventilation, ice cooling, mobile water cooling equipment and spray cooling at key positions in the cave. For high humidity, The working environment is mainly improved by adopting measures such as strengthening construction ventilation and mobile dehumidifiers in the tunnel. In summary, the main way to deal with the tunnel construction environment is to strengthen construction ventilation or to adopt a combination of multiple solutions on the basis of construction ventilation to deal with the poor construction environment. It can be seen that the construction ventilation of the tunnel has a very obvious effect on the improvement of the construction environment and the increase of construction efficiency. However, for the ultra-long and complex environment (high temperature, high humidity, and harmful gases) tunnels currently under construction, the complex environmental coupling conditions faced by their construction are unprecedented or very rare. Therefore, it is necessary to conduct research on the complex tunnel construction environment currently and in the future.
[0003] In the process of implementing the embodiments of the present invention, the inventors found that there are at least the following problems in the background technology: (1) At present, field tests for tunnels with high temperature, high humidity, high dust and high concentration of harmful gases require a large number of personnel and construction machinery and equipment, which will occupy the construction tunnel for a long time, affect the construction progress on site, and require high test costs and construction costs; (2) At present, the treatment of high ground temperature, harmful gases and dust mostly adopts a single method or a combination of two methods. There are relatively few studies on the final treatment effect of the treatment methods used in tunnels with complex construction environments, and most of them are single-measure studies; (3) For some tunnels with high ground temperature, dust and harmful gas concentration, the actual construction site does not have the test conditions. In addition, the on-site construction has a great impact on the accuracy of the test data and data collection; (4) The on-site usage scenario of the dust removal and purification trolley is single and cannot effectively test the dust removal and purification effect and process.
[0004] Therefore, it is necessary to propose a double-hole tunnel construction ventilation simulation environment test system and test method to solve the above problems. Summary of the invention
[0005] In view of the above problems, the purpose of the present invention is to provide a double-hole tunnel construction ventilation simulation environment test system and test method. By simulating the actual double-track tunnel construction environment, it is possible to carry out construction ventilation and dust removal and purification trolley on dust, harmful gases, temperature and humidity and treatment effect tests. The selected environmental parameters are derived from field measured data, which can accurately simulate the construction ventilation effect under high ground temperature, high dust, high humidity and high dust concentration, and conduct targeted simulation tests on the performance of dust removal and purification equipment in purifying harmful gases and dust and the purification process, so as to provide data support for the improvement of the actual tunnel construction environment.
[0006] The technical solution of the present invention is: a double-hole tunnel construction ventilation simulation environment test system, including a dust source, a harmful gas source, an air supply fan, an exhaust fan, a purification and dust removal trolley, a test tunnel and a tunnel environment parameter detection module, the test tunnel includes a left line of the main tunnel, a right line of the main tunnel and a plurality of transverse passages connected to the left line of the main tunnel and the right line of the main tunnel, and wind curtains are respectively provided in the transverse passages at the connection points between the transverse passages and the left line of the main tunnel and the left line of the main tunnel, one end of the left line of the main tunnel is respectively connected to the dust source and the harmful gas source, and the other end is connected to the air supply fan, one end of the right line of the main tunnel is respectively connected to the dust source and the harmful gas source, and the other end is connected to the exhaust fan, the purification and dust removal trolley is located in the left line of the main tunnel, and the tunnel environment parameter detection module is located in the test tunnel, including a plurality of temperature and humidity sensors, dust sensors and harmful gas sensors.
[0007] There are three transverse passages, namely, transverse passage No. 1, transverse passage No. 2 and transverse passage No. 3; there are six wind curtains, namely, left line No. 1 wind curtain, left line No. 2 wind curtain, left line No. 3 wind curtain, passage No. 1 wind curtain, passage No. 2 wind curtain and passage No. 3 wind curtain; the left line No. 1 wind curtain is installed at the main tunnel position where the left line of the main tunnel intersects with transverse passage No. 1, the left line No. 2 wind curtain is installed at the main tunnel position where the left line of the main tunnel intersects with transverse passage No. 2, the left line No. 3 wind curtain is installed at the main tunnel position where the left line of the main tunnel intersects with transverse passage No. 3, and the passage No. 1 wind curtain is installed at the transverse tunnel position where the left line of the main tunnel intersects with transverse passage No. 1. The cross tunnel position where the left line of the main tunnel intersects with the No. 2 cross channel is installed with the channel No. 2 wind curtain, the cross tunnel position where the left line of the main tunnel intersects with the No. 3 cross channel is installed with the channel No. 3 wind curtain, the left line heading face of the main tunnel, the right line heading face of the main tunnel, the left line and the right line positions of the main tunnel between the No. 2 cross channel and the No. 3 cross channel, and the left line and the right line positions of the main tunnel between the No. 1 cross channel and the No. 2 cross channel are respectively installed with dust sensors and harmful gas sensors, the left line and the right line of the main tunnel are respectively installed with temperature and humidity sensors and stirring fans at the intersections of the No. 1 cross channel, the No. 2 cross channel and the No. 3 cross channel.
[0008] Dust sensors and harmful gas sensors are installed in the No. 1 transverse channel, No. 2 transverse channel and No. 3 transverse channel respectively.
[0009] The dust source includes a dust switch, a booster fan and a dust outlet, and the dust outlet is connected to the left line and the right line of the main tunnel through pipelines. The harmful gas source includes a gas switch, a harmful gas outlet and a gas booster pump, and the harmful gas outlet is connected to the left line and the right line of the main tunnel through pipelines.
[0010] The test tunnel entrance is provided with an inlet baffle, a fan reserved hole is provided on the inlet baffle, a left line inlet baffle is provided at the main tunnel left line inlet, a right line inlet baffle is provided at the main tunnel right line inlet, the air supply fan is installed on the left line inlet baffle, the air supply fan is connected with an air duct directly to the main tunnel left line heading area, a wind speed and pressure sensor is installed at the intersection of the main tunnel left line and the cross channel, and the exhaust fan is installed on the right line inlet baffle.
[0011] A variable frequency air conditioner is provided outside the test tunnel, and a plurality of air conditioning copper pipes are provided at the output end of the variable frequency air conditioner. The air conditioning copper pipes are respectively connected to the intersections of the cross passage and the left line and the right line of the main tunnel.
[0012] A polytetrafluoroethylene elastic sealing belt is provided at the connection between the wind curtain, the transverse passage and the left line of the main tunnel, and a reserved hole for the air duct is provided on the wind curtain.
[0013] A double-hole tunnel construction ventilation simulation environment test method, using the double-hole tunnel construction ventilation simulation environment test system described above, comprises the following steps: S1: Turn on the variable frequency air conditioner to keep the temperature and humidity in the left line of the main tunnel, the right line of the main tunnel, the No. 1 transverse passage, the No. 2 transverse passage, and the No. 3 transverse passage at the set standard values; S2: Turn on the dust booster fan and dust switch, and turn on the stirring fan to keep the dust concentration in the left line of the main tunnel, the right line of the main tunnel, the No. 1 transverse channel, the No. 2 transverse channel, and the No. 3 transverse channel at the set standard value; S3: Turn on the gas booster pump and gas switch, and turn on the stirring fan to keep the concentration of harmful gases in the left line of the main tunnel, the right line of the main tunnel, the No. 1 transverse channel, the No. 2 transverse channel, and the No. 3 transverse channel at the set standard value; S4: Turn on the blower and supply air to the left and right tunnel faces through the air duct at the set wind speed and pressure; S5: Collect real-time data from dust sensors, harmful gas sensors, temperature and humidity sensors, and wind speed and pressure sensors at each location; S6: Open the inlet damper, repeat steps S1 to S5, change the dust concentration levels at the left line of the main tunnel, the right line of the main tunnel and each cross channel, and study the dust removal effect of ventilation and the movement law of dust under different dust concentrations; S7: Open the inlet damper, repeat steps S1 to S5, change the concentration level of harmful gases at the left line of the main tunnel, the right line of the main tunnel and each cross channel, and study the purification effect of ventilation and the migration law of harmful gases under different concentrations of harmful gases; S8: Open the inlet damper, repeat steps S1 to S5, change the temperature levels at the left line of the main tunnel, the right line of the main tunnel and each cross channel, and study the cooling effect of ventilation under different temperature conditions; S9: Open the inlet damper, repeat steps S1 to S5, change the humidity levels at the left line of the main tunnel, the right line of the main tunnel and each cross channel, and study the dehumidification effect of ventilation under different humidity conditions; S10: Repeat steps S1 to S5, change the dust concentration level in the entire test system, and place the purification and dust removal trolley at various key positions to study the dust removal effect of the trolley; S11: Repeat steps S1 to S5, change the concentration level of harmful gases in the entire test system, and place the purification and dust removal trolley at various key positions to study the purification effect of the trolley.
[0014] The technical effects of the present invention are: 1. The test system of the present invention includes a left line of the main tunnel, a right line of the main tunnel, a cross passage, a harmful gas source, a dust source, a ventilation system and a dust removal and purification trolley. By simulating the construction environment of an actual double-track tunnel and processing and purifying the construction environment of the tunnel under a complex environment, the selected environmental parameters are derived from on-site measured data, which can accurately simulate the construction ventilation effect under high ground temperature, high dust, high humidity and high dust concentration, and conduct targeted simulation tests on the performance and purification process of the dust removal and purification device for purifying harmful gases and dust; 2. The present invention tests the quality of ventilation effects and the working performance of the dust removal trolley under different ventilation parameters according to different variables of ground temperature, harmful gas concentration, dust concentration and humidity, and compares and analyzes different ventilation methods and verifies the purification process of the dust removal and purification trolley. During the test, the distribution of various index parameters inside the test system is checked in real time through sensors arranged at key positions.
[0015] The following is a further description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The present invention is a schematic diagram of the structure of a double-hole tunnel construction ventilation simulation environment test system.
[0017] Figure 2 This is a schematic cross-sectional view of the intersection of a cross passage and a main tunnel of a double-tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0018] Figure 3 The present invention is a schematic diagram of a cross section of a main tunnel of a double-tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0019] Figure 4 The present invention is a schematic diagram of a cross-section of a transverse passage of a double-hole tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0020] Figure 5 The present invention is a schematic diagram of a main tunnel air curtain of a double-tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0021] Figure 6 This is a schematic diagram of a cross-channel wind curtain in a double-hole tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0022] Figure 7 This is a schematic diagram of a transverse channel inlet baffle of a double-hole tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0023] Figure 8 This is a schematic diagram of the one-hour change pattern of dust concentration test in a double-hole tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0024] Fig. 9 This is a schematic diagram of a four-hour change pattern of dust concentration test in a double-hole tunnel construction ventilation simulation environment test system according to an embodiment of the present invention.
[0025] Figure markings: 1-right line of the main tunnel; 2-left line of the main tunnel; 3-transverse passage; 301-transverse passage No. 1; 302-transverse passage No. 2; 303-transverse passage No. 3; 4-wind curtain; 401-wind curtain No. 1 of the left line; 402-wind curtain No. 2 of the left line; 403-wind curtain No. 3 of the left line; 501-wind curtain No. 1 of the channel; 502-wind curtain No. 2 of the channel; 503-wind curtain No. 3 of the channel; 6-dust source; 601-dust switch; 602-boosting fan; 603-dust sensor; 604-dust outlet; 7-harmful gas source; 701-gas switch; 702-harmful gas sensor; 703-harmful gas outlet; 704-gas booster pump; 8-temperature and humidity sensor; 9-blower; 901-air duct; 902-wind speed and pressure sensor; 10-exhaust fan; 11-stirring fan; 12-inverter air conditioner; 13-air conditioner copper tube; 14-purification and dust removal trolley; 15-polytetrafluoroethylene elastic sealing belt; 16-inlet baffle; 161-left line inlet baffle; 162-right line inlet baffle; 17-reserved channel for fan; 18-reserved channel for air duct. Implementation
[0026] Example 1 Figure 1 to Figure 7 As shown, a double-tunnel construction ventilation simulation environment test system includes a dust source 6, a harmful gas source 7, a blower 9, an exhaust fan 10, a purification and dust removal trolley 14, a test tunnel and a tunnel environment parameter detection module. The test tunnel includes a left main tunnel line 1, a right main tunnel line 2 and a plurality of transverse passages 3 connected to the left main tunnel line 1 and the right main tunnel line 2. Wind curtains 4 are respectively provided in the transverse passages 3 and the left main tunnel line 1 at the connection between the transverse passages 3 and the left main tunnel line 1. One end of the left main tunnel line 1 is respectively connected to the dust source 6 and the harmful gas source 7, and the other end is connected to the blower 9. One end of the right main tunnel line 2 is respectively connected to the dust source 6 and the harmful gas source 7, and the other end is connected to the exhaust fan 10. The purification and dust removal trolley 14 is located in the left main tunnel line 1. The tunnel environment parameter detection module is located in the test tunnel and includes a plurality of temperature and humidity sensors 8, a dust sensor 603 and a harmful gas sensor 702.
[0027] During actual use, the test system of the present invention includes a left main tunnel line 1, a right main tunnel line 2, a cross passage 3, a harmful gas source 7, a dust source 6, a dust removal and purification trolley 14 and a tunnel environmental parameter detection module. The harmful gas source 7 and the dust source 6 are used to simulate the construction environment of an actual double-track tunnel, and the construction environment of the tunnel under a complex environment is processed and purified. The selected environmental parameters are derived from on-site measured data, which can accurately simulate the construction ventilation effect under high ground temperature, high dust, high humidity and high dust concentration, and conduct targeted simulation tests on the performance of the dust removal and purification device in purifying harmful gases and dust and the purification process.
[0028] Embodiment 2 Preferably, on the basis of Embodiment 1, in this embodiment, there are three transverse passages 3, namely transverse passage No. 1 301, transverse passage No. 2 302 and transverse passage No. 3 303, there are six wind curtains 4, namely left line No. 1 wind curtain 401, left line No. 2 wind curtain 402, left line No. 3 wind curtain 403, channel No. 1 wind curtain 501, channel No. 2 wind curtain 502 and channel No. 3 wind curtain 503, the left line No. 1 wind curtain 401 is installed at the main tunnel position where the main tunnel left line 1 intersects with transverse passage No. 1 301, the left line No. 2 wind curtain 401 is installed at the main tunnel position where the main tunnel left line 1 intersects with transverse passage No. 2 302 No. 1 wind curtain 402 is installed at the main tunnel position where the left line 1 of the main tunnel intersects with the No. 3 transverse channel 303, No. 1 wind curtain 501 is installed at the transverse tunnel position where the left line 1 of the main tunnel intersects with the No. 1 transverse channel 301, No. 2 wind curtain 502 is installed at the transverse tunnel position where the left line 1 of the main tunnel intersects with the No. 2 transverse channel 302, and No. 3 wind curtain 503 is installed at the transverse tunnel position where the left line 1 of the main tunnel intersects with the No. 3 transverse channel 303. The left line 1 of the main tunnel between the heading face of the left line 1 of the main tunnel, the heading face of the right line 2 of the main tunnel, and the No. 2 transverse channel 302 and the No. 3 transverse channel 303 is installed. Dust sensors 603 and harmful gas sensors 702 are installed at the positions of the main tunnel right line 2, the main tunnel left line 1 and the main tunnel right line 2 between the No. 1 transverse channel 301 and the No. 2 transverse channel 302, respectively. Temperature and humidity sensors 8 and stirring fans 11 are installed at the intersections of the main tunnel left line 1 and the main tunnel right line 2 with the No. 1 transverse channel 301, the No. 2 transverse channel 302 and the No. 3 transverse channel 303, respectively.
[0029] In actual use, the left line 1 of the main tunnel and the right line 2 of the main tunnel are connected through three transverse passages 3 to form the overall framework of the model. The left line 1 of the main tunnel, the position of the left line 1 of the main tunnel between the second transverse passage 302 and the third transverse passage 303, and the position of the left line 1 of the main tunnel between the first transverse passage 301 and the second transverse passage 302 are respectively installed with dust sensors 603 and harmful gas sensors 702. The dust sensors 603 and harmful gas sensors 702 are installed at the position of the main tunnel vault. Temperature and humidity sensors 8 and stirring fans 11 are installed at the intersections of No. 301, No. 2 cross passage 302 and No. 3 cross passage 303, respectively. The temperature and humidity sensor 8 is installed on the left side wall of the left line 1 of the main tunnel and on the right side wall of the right line 2 of the main tunnel, so as to facilitate the on-site accurate measurement of dust, harmful gases, temperature and humidity data in the left line 1 and the right line 2 of the main tunnel. The stirring fan 11 is mainly used to evenly distribute the dust and harmful gases in the double tunnel tunnel and the cross passage 3 after they are ejected from the outlet. The stirring fan 11 can be turned off after the dust and harmful gases are evenly distributed.
[0030] Embodiment 3 Preferably, on the basis of Embodiment 1 or Embodiment 2, in this embodiment, a dust sensor 603 and a harmful gas sensor 702 are installed in the first transverse channel 301 , the second transverse channel 302 and the third transverse channel 303 , respectively.
[0031] During actual use, the dust sensor 603 and the harmful gas sensor 702 are respectively installed in the No. 1 horizontal channel 301, the No. 2 horizontal channel 302 and the No. 3 horizontal channel 303 of the present invention to facilitate on-site accurate measurement of dust and harmful gas data in the No. 1 horizontal channel 301, the No. 2 horizontal channel 302 and the No. 3 horizontal channel 303.
[0032] Example 4 Preferably, on the basis of Example 1 or Example 3, in this example, the dust source 6 includes a dust switch 601, a booster fan 602 and a dust outlet 604, and the dust outlet 604 is respectively connected to the left line 1 and the right line 2 of the main tunnel through pipelines, and the harmful gas source 7 includes a gas switch 701, a harmful gas outlet 703 and a gas booster pump 704, and the harmful gas outlet 703 is respectively connected to the left line 1 and the right line 2 of the main tunnel through pipelines.
[0033] During actual use, the dust source 6 of the present invention includes a dust switch 601, a booster fan 602 and a dust outlet 604. The dust outlet 604 is connected to the left line 1 and the right line 2 of the main tunnel through pipelines. Before entering the test device, the dust source 6 pipeline is installed with a dust switch 601 on the outside of the test device where the dust outlets 604 of the left line 1 and the right line 2 of the main tunnel are connected. The dust booster fan 602 is installed on the dust pipeline before it is divided into left and right lines to supply dust to control the size of the dust pressure. The harmful gas source 7 includes a gas switch 701, a harmful gas outlet 703 and a gas booster pump 704. The harmful gas outlet 703 The harmful gas source 7 is connected to the left line 1 and the right line 2 of the main tunnel respectively through pipelines. The harmful gas source 7 is then connected to the harmful gas outlets 703 of the left line 1 and the right line 2 of the main tunnel respectively through Y-shaped gas pipelines. The gas booster pump 704 controls the pressure of the harmful gas on the pipeline before the gas pipeline is divided into left and right lines to supply the harmful gas.
[0034] Embodiment 5 Preferably, on the basis of Embodiment 1, in this embodiment, an inlet baffle 16 is provided at the inlet of the test tunnel, a reserved hole 17 for a fan is provided on the inlet baffle 16, a left line inlet baffle 161 is provided at the inlet of the left line 1 of the main tunnel, a right line inlet baffle 162 is provided at the inlet of the right line 2 of the main tunnel, the air supply fan 9 is installed on the left line inlet baffle 161, the air supply fan 9 is connected with an air duct 901 directly passing through the heading area of the left line 1 of the main tunnel, a wind speed and pressure sensor 902 is installed at the intersection of the left line 1 of the main tunnel and the cross passage 3, and the exhaust fan 10 is installed on the right line inlet baffle 162.
[0035] During actual use, the left line inlet baffle 161 of the main tunnel described in the present invention is installed with a blower 9, and the blower 9 is connected to the air duct 901 to divide the air and lead it to the main tunnel left line 1 and the main tunnel right line 2 face area. The right line 2 inlet baffle 162 of the main tunnel is installed with an exhaust fan 10. The inlet baffle 16 and the left line 1 and the right line 2 of the main tunnel are all detachable or sealed. A fan reserved hole 17 is reserved on the inlet baffle 16 to facilitate the close connection between the blower 9 and the exhaust fan 10 and the inlet baffle 16.
[0036] Embodiment 6 Preferably, on the basis of Embodiment 1 or Embodiment 5, in this embodiment, a variable frequency air conditioner 12 is provided on the outside of the test tunnel, and a plurality of air-conditioning copper tubes 13 are provided on the output end of the variable frequency air conditioner 12, and the air-conditioning copper tubes 13 are respectively connected to the intersection of the cross passage 3 and the main tunnel left line 1 and the main tunnel right line 2.
[0037] During actual use, a variable frequency air conditioner 12 is provided on the outside of the test tunnel of the present invention, and a plurality of air conditioning copper tubes 13 are provided at the output end of the variable frequency air conditioner 12, and the air conditioning copper tubes 13 are respectively connected with the cross channel 3 and the intersections of the left line 1 of the main tunnel and the right line 2 of the main tunnel. When in use, the variable frequency air conditioner 12 is turned on to keep the temperature and humidity in each place in the left line 1 of the main tunnel, the right line 2 of the main tunnel, the No. 1 cross channel 301, the No. 2 cross channel 302, and the No. 3 cross channel 303 at the set standard values.
[0038] Embodiment 7 Preferably, based on Embodiment 1 or Embodiment 6, in this embodiment, a polytetrafluoroethylene elastic sealing belt 15 is provided at the connection between the wind curtain 4 and the transverse passage 3 and the left line 1 of the main tunnel, and a reserved hole 18 for an air duct is provided on the wind curtain 4 .
[0039] During actual use, the connection between the wind curtain 4 of the present invention and the transverse passage 3 and the left line 1 of the main tunnel is sealed with a polytetrafluoroethylene elastic sealing belt 15, so as to facilitate isolation of different test schemes into closed spaces.
[0040] Embodiment 8 A method for testing a ventilation simulation environment for a double-hole tunnel construction, using the above-mentioned ventilation simulation environment testing system for a double-hole tunnel construction, comprises the following steps: S1: Turn on the variable frequency air conditioner 12 to keep the temperature and humidity in the left line 1 of the main tunnel, the right line 2 of the main tunnel, the first transverse passage 301, the second transverse passage 302, and the third transverse passage 303 at the set standard values; S2: Turn on the dust booster fan 602 and the dust switch 601, and turn on the stirring fan 11, so that the dust concentration in the left line 1 of the main tunnel, the right line 2 of the main tunnel, the first transverse channel 301, the second transverse channel 302, and the third transverse channel 303 is maintained at the set standard value. The standard value adopts the tunnel measured value according to the different simulated working conditions. The dust particles are mainly composed of PM1, PM2.5 and PM10; S3: Turn on the gas booster pump 704 and the gas switch 701, and turn on the stirring fan 11, so that the concentration of harmful gases in the left line 1 of the main tunnel, the right line 2 of the main tunnel, the No. 1 transverse channel 301, the No. 2 transverse channel 302, and the No. 3 transverse channel 303 is maintained at the set standard value, which adopts the tunnel measured value according to the different simulated working conditions. The gases contained in the harmful gas source 7 include CO, CO2, NO, NO2, H2S, CH4, SO2 and other gases. According to different test conditions, a single harmful gas or a combination of multiple harmful gases can be used; S4: Turn on the blower 9 to supply air to the left line 1 and the right line 2 of the tunnel through the air duct 901 at the set wind speed and pressure; S5: Collect real-time data from dust sensors 602, harmful gas sensors 702, temperature and humidity sensors 8, and wind speed and pressure sensors 902 at each location; S6: Open the inlet damper 1, repeat steps S1 to S5, change the dust concentration levels at the left line 1 of the main tunnel, the right line 2 of the main tunnel and each cross channel 3, and study the dust removal effect of ventilation under different dust concentrations and the movement law of dust; S7: Open the inlet damper 1, repeat steps S1 to S5, change the concentration level of harmful gases at the left line 1 of the main tunnel, the right line 2 of the main tunnel and each cross channel 3, and study the purification effect of ventilation and the migration law of harmful gases under different concentrations of harmful gases; S8: Open the inlet baffle 16, repeat steps S1 to S5, change the temperature levels at the left line 1 of the main tunnel, the right line 2 of the main tunnel and each cross channel 3, and study the cooling effect of ventilation under different temperature conditions; S9: Open the inlet baffle 16, repeat steps S1 to S5, change the humidity levels of the left line 1 of the main tunnel, the right line 2 of the main tunnel and each cross channel 3, and study the dehumidification effect of ventilation under different humidity conditions; S10: Repeat steps S1 to S5, change the dust concentration level in the entire test system, and place the purification and dust removal trolley 14 at various key positions to study the dust removal effect of the trolley; S11: Repeat steps S1 to S5, change the concentration level of harmful gases in the entire test system, and place the purification and dust removal trolley 14 at various key positions to study the purification effect of the trolley.
[0041] like Figure 8 , Fig. 9 As shown, the present invention tests the ventilation effect under different ventilation parameters and the working performance of the purification and dust removal trolley according to different variables of ground temperature, harmful gas concentration, dust concentration and humidity, and compares and analyzes different ventilation methods and verifies the purification process of the dust removal and purification trolley. During the test, the distribution of various indicator parameters inside the test system is checked in real time through sensors arranged at various key positions.
[0042] Further, based on the test system of Example 8, by studying the dust removal effect of ventilation under different dust concentrations and the dust migration law, the following steps are included: Step 61: After the standard environment, environmental humidity and harmful gas concentration conditions are prepared, the inlet baffle 16 is removed, and the air blower 9 is turned on to supply air to the left-line main tunnel 1 and the right-line main tunnel 2; Step 62: Turn on the dust switch 601, adjust the power of the booster fan 602 according to the dust concentration working level, and provide different concentrations of dust to the left line 1 of the main tunnel, the right line 2 of the main tunnel and the cross channel 3 respectively through the different powers of the booster fan 602; Step 63: Record the temperature and humidity values, harmful gas concentration values, and temperature and humidity values of sensors at each position, and derive the influence of the double-hole tunnel on the diffusion of different dust concentrations under the condition of constant wind pressure and wind volume; Step 64: repeat steps 61 and 62, keep the dust concentration in the main tunnel and the cross channel 3 unchanged, increase the input power of the blower 9 step by step, and obtain the diffusion law of dust under different wind speeds and wind pressures in the double-tunnel; Step 65: Repeat steps 61, 62 and 63, close the channel No. 1 wind curtain 501, the channel No. 2 wind curtain 502, and the channel No. 3 wind curtain 503, and obtain the influence of the single-hole tunnel on the diffusion of different dust concentrations under the condition of constant wind pressure and air volume; Step 66: Repeat steps 61, 62 and 64, close the channel No. 1 wind curtain 501, the channel No. 2 wind curtain 502, and the channel No. 3 wind curtain 503, and obtain the diffusion law of dust under different wind speeds and wind pressures in the single-hole tunnel; Further, based on the test system of Example 8, by studying the purification effect of ventilation under different harmful gas concentrations and the migration law of harmful gases, the following steps are included: Step 71: After the standard environment, ambient humidity and dust concentration conditions are prepared, the inlet baffle is removed and the air blower 9 is turned on to supply air to the left-line main tunnel 1 and the right-line main tunnel 2; Step 72: Turn on the gas switch 701, adjust the power of the gas booster pump 704 according to the harmful gas concentration working level, and provide harmful gases of different concentrations to the left line 1 of the main tunnel, the right line 2 of the main tunnel and the cross channel 3 respectively through the different powers of the gas booster pump 704; Step 73: Record the temperature and humidity values, dust concentration values, and temperature and humidity values of sensors at each position, and derive the influence of the double-hole tunnel on the purification and diffusion of harmful gases of different concentrations under the condition of constant wind pressure and air volume; Step 74: repeat steps 71 and 72, keep the concentration of harmful gases in the main tunnel and the cross channel unchanged, increase the input power of the blower 9 step by step, and obtain the purification efficiency and diffusion law of harmful gases in the double-tunnel under different wind speeds and pressures; Step 75: Repeat steps 71, 72 and 73, close the channel No. 1 wind curtain 501, the channel No. 2 wind curtain 502, and the channel No. 3 wind curtain 503, and obtain the influence of the single-hole tunnel on the purification and diffusion of harmful gases of different concentrations under the condition of constant wind pressure and air volume; Step 76: Repeat steps 71, 72 and 74, close the channel No. 1 wind curtain 501, the channel No. 2 wind curtain 502, and the channel No. 3 wind curtain 503, and obtain the purification efficiency and diffusion law of harmful gases under different wind speeds and wind pressures in the single-hole tunnel; Further, based on the test system of Example 6, by studying the cooling effect of ventilation at different temperatures, the following steps are included: Step 81: After the standard harmful gas concentration, ambient humidity and dust concentration conditions are prepared, the inlet baffle 16 is removed and the blower 9 is turned on to supply air to the left-line main tunnel 1 and the right-line main tunnel 2; Step 82: Turn on the variable frequency air conditioner 12, and adjust the temperature of the main tunnel and the cross channel 3 in stages through the temperature control interface connected between the variable frequency air conditioner 12 and the main tunnel left line 1 and the main tunnel right line 2; Step 83: obtaining data in real time through the temperature and humidity sensors 8 distributed at key positions of the double-hole tunnel, and obtaining the cooling effect of the double-hole tunnels with different temperatures under certain wind speed and wind pressure conditions; Step 84: Keep the temperature provided by the variable frequency air conditioner 12 to the double-hole tunnel unchanged, and adjust the input frequency of the air supply fan 9 to obtain the cooling effect and temperature field distribution law of the high geothermal tunnel under different wind speeds and wind pressures.
[0043] Further, based on the test system of Example 8, the dehumidification effect of ventilation under different humidity is studied, including the following steps: Step 91: After the standard harmful gas concentration, ambient temperature and dust concentration conditions are prepared, the inlet baffle 16 is removed and the blower 9 is turned on to supply air to the left-line main tunnel 1 and the right-line main tunnel 2; Step 91: Turn on the variable frequency air conditioner 12, and adjust the humidity of the main tunnel and the cross passage 3 in stages through the temperature control interface connected between the variable frequency air conditioner 12 and the main tunnel left line 1 and the main tunnel right line 2; Step 93: obtaining data in real time through the temperature and humidity sensors 8 distributed at key positions of the double-hole tunnel, and obtaining the dehumidification effect of the double-hole tunnel with different humidity under certain wind speed and wind pressure conditions; Step 94: Keep the humidity provided by the variable frequency air conditioner 12 to the double-hole tunnel unchanged, and adjust the input frequency of the air supply fan 9 to obtain the dehumidification effect on the high-humidity tunnel under different wind speeds and wind pressures.
[0044] Further, based on the test system of Example 8, the purification effect of the dust removal and purification trolley under actual construction environment conditions is studied, including the following steps: Step 101: prepare environmental parameters according to actual tunnel construction environment test data, provide test conditions to the test system through the harmful gas source 7, dust source 6, and variable frequency air conditioner 12 according to the given environmental parameter values, and close the inlet damper 16, the air supply fan 9, and the exhaust fan 10; Step 102: Place the dust removal and purification trolley 14 on the left line 1 face of the main tunnel, the right line 2 face of the main tunnel, the first transverse channel 301, the second transverse channel 302, and the third transverse channel 303, respectively, and start the dust removal and purification system; Step 103: Record the real-time data of the dust sensor 603, the harmful gas sensor 702 and the temperature and humidity sensor 8, and obtain the concentration variation law of the dust and harmful gas in the hole and the dust removal and purification time parameters of the dust removal and purification trolley 14 at each working position; Step 104: Repeat steps 101 and 102, turn on the blower 9 and the inlet baffle 16, close the channel No. 1 wind curtain 501, the channel No. 2 wind curtain 502, and the channel No. 3 wind curtain 503, and obtain the migration law of harmful gases and dust in the single-hole tunnel and the dust removal and purification effect under the dual measures of construction ventilation + dust removal and purification trolley 14 by collecting sensor data; Step 105: repeat steps 101 and 102, turn on the blower 9 and the inlet baffle 16, and obtain the migration law of harmful gases and dust in the double-hole tunnel and the dust removal and purification effect under the dual measures of construction ventilation + dust removal and purification trolley 14; Step 106: Repeat step 101, close the left line No. 3 wind curtain 403, close the channel No. 3 wind curtain 503 and the left line No. 2 wind curtain 402, close the channel No. 3 No. 2 wind curtain 502 and the left line No. 1 wind curtain 401, stop the dust removal and purification trolley 14 near the left line heading face 101 of the main tunnel, record the sensor data, and obtain the change law of the dust removal and purification trolley 14 for harmful gases and dust purification capacity under different space sizes.
[0045] Step 107: Turn on the exhaust fan 10 to extract the remaining harmful gases and dust in the main tunnel and the cross channel 3 of the double-tunnel, in preparation for the next cycle test.
[0046] Further, based on the test system of Example 8, the purification effect and the cooling and dehumidification effect of harmful gases and dust under the tunnel ventilation condition are studied, including the following steps: Step 121: prepare environmental parameters according to actual tunnel construction environment test data, provide test conditions to the test system through the harmful gas source 7, the dust source 6, and the variable frequency air conditioner 12 according to the given environmental parameter values, and open the inlet baffle 16; Step 122: Move the blower 9 to the vicinity of the third transverse passage 303, divide the air through the air duct 901 to supply air to the left line 1 and the right line 2 of the main tunnel respectively, and close the air curtain 501 of the passage 1 and the air curtain 502 of the passage 2; Step 123: Turn on the fan, record the data of the dust sensor 603, the harmful gas sensor 702 and the temperature and humidity sensor 8 at each position, and perform data analysis; Step 124: Repeat steps 121 to 123, keep other environmental parameters unchanged, change the dust concentration, and obtain the purification effect and diffusion law of tunnel ventilation on tunnels with different dust concentrations; Step 125: Repeat steps 121 to 123, keep other environmental parameters unchanged, change the concentration of harmful gases, and obtain the purification effect and diffusion law of tunnel ventilation for tunnels with different concentrations of harmful gases; Step 126: Repeat steps 121 to 123, keeping other environmental parameters unchanged and changing the temperature to obtain the cooling effect of tunnel ventilation on tunnels with different temperatures.
[0047] The present invention can also be used to study the purification efficiency of single or compound harmful gases in a double-hole tunnel under single-head pressure ventilation conditions, and can be used to study the distribution law and treatment effect of dust, harmful gases, temperature and humidity in a single or double-hole tunnel under the dual measures of construction ventilation + dust removal and purification trolley 14, which are not listed here one by one.
[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.
Claims
1. A double-hole tunnel construction ventilation simulation environment test system, characterized by: The invention comprises a dust source (6), a harmful gas source (7), a blower (9), an exhaust fan (10), a purification and dust removal trolley (14), a test tunnel and a tunnel environmental parameter detection module. The test tunnel comprises a left main tunnel line (1), a right main tunnel line (2) and a plurality of transverse passages (3) connected to the left main tunnel line (1) and the right main tunnel line (2). Wind curtains (4) are respectively arranged in the transverse passages (3) and the left main tunnel line (1) at the places where the transverse passages (3) are connected to the left main tunnel line (1). One end of the left main tunnel line (1) is respectively connected to the dust source (6) and the harmful gas source (7), and the other end is connected to the blower (9). The right main tunnel line (2) One end of the purifying and dust removal trolley (14) is respectively connected to the dust source (6) and the harmful gas source (7), and the other end is connected to the exhaust fan (10). The purifying and dust removal trolley (14) is located in the left line of the main tunnel (1). The tunnel environmental parameter detection module is located in the test tunnel and includes a plurality of temperature and humidity sensors (8), a dust sensor (603) and a harmful gas sensor (702).
2. A double-hole tunnel construction ventilation simulation environment test system according to claim 1, characterized in that: There are three transverse passages (3), namely, transverse passage No. 1 (301), transverse passage No. 2 (302) and transverse passage No. 3 (303); there are six wind curtains (4), namely, left line wind curtain No. 1 (401), left line wind curtain No. 2 (402), left line wind curtain No. 3 (403), channel wind curtain No. 1 (501), channel wind curtain No. 2 (502) and channel wind curtain No. 3 (503); the left line wind curtain No. 1 (401) is installed at the main tunnel position where the main tunnel left line (1) intersects with the transverse passage No. 1 (301); the left line wind curtain No. 2 (402) is installed at the main tunnel position where the main tunnel left line (1) intersects with the transverse passage No. 2 (302); A left-line No. 3 wind curtain (403) is installed at the main tunnel position where the left tunnel line (1) intersects with the No. 3 transverse passage (303); a channel No. 1 wind curtain (501) is installed at the transverse tunnel position where the left tunnel line (1) intersects with the No. 1 transverse passage (301); a channel No. 2 wind curtain (502) is installed at the transverse tunnel position where the left tunnel line (1) intersects with the No. 2 transverse passage (302); a channel No. 3 wind curtain (503) is installed at the transverse tunnel position where the left tunnel line (1) intersects with the No. 3 transverse passage (303); the left tunnel line (1) between the main tunnel left line (1) face, the main tunnel right line (2) face, the No. 2 transverse passage (302) and the No. 3 transverse passage (303) Dust sensors (603) and harmful gas sensors (702) are installed at the positions of the main tunnel right line (2), the main tunnel left line (1) and the main tunnel right line (2) between the first transverse passage (301) and the second transverse passage (302), respectively. Temperature and humidity sensors (8) and stirring fans (11) are installed at the intersections of the main tunnel left line (1) and the main tunnel right line (2) with the first transverse passage (301), the second transverse passage (302) and the third transverse passage (303), respectively.
3. A double-hole tunnel construction ventilation simulation environment test system according to claim 2, characterized in that: A dust sensor (603) and a harmful gas sensor (702) are installed in the first transverse channel (301), the second transverse channel (302) and the third transverse channel (303), respectively.
4. A double-hole tunnel construction ventilation simulation environment test system according to claim 1, characterized in that: The dust source (6) includes a dust switch (601), a booster fan (602) and a dust outlet (604), and the dust outlet (604) is connected to the left line (1) and the right line (2) of the main tunnel through pipelines. The harmful gas source (7) includes a gas switch (701), a harmful gas outlet (703) and a gas booster pump (704), and the harmful gas outlet (703) is connected to the left line (1) and the right line (2) of the main tunnel through pipelines.
5. According to claim 1, a double-hole tunnel construction ventilation simulation environment test system is characterized by: The test tunnel entrance is provided with an inlet baffle (16), the inlet baffle (16) is provided with a fan reserved hole (17), the main tunnel left line (1) entrance is provided with a left line inlet baffle (161), the main tunnel right line (2) entrance is provided with a right line inlet baffle (162), the air supply fan (9) is installed on the left line inlet baffle (161), the air supply fan (9) is connected with an air duct (901) directly connected to the main tunnel left line (1) face area, a wind speed and pressure sensor (902) is installed at the intersection of the main tunnel left line (1) and the cross channel (3), and the exhaust fan (10) is installed on the right line inlet baffle (162).
6. A double-hole tunnel construction ventilation simulation environment test system according to claim 1, characterized in that: A variable frequency air conditioner (12) is provided outside the test tunnel, and a plurality of air conditioning copper tubes (13) are provided at the output end of the variable frequency air conditioner (12). The air conditioning copper tubes (13) are respectively connected to the cross passage (3) and the intersections of the left line (1) of the main tunnel and the right line (2) of the main tunnel.
7. A double-hole tunnel construction ventilation simulation environment test system according to claim 1, characterized in that: A polytetrafluoroethylene elastic sealing belt (15) is provided at the connection between the wind curtain (4), the transverse passage (3) and the left line of the main tunnel (1), and a reserved hole (18) for an air duct is provided on the wind curtain (4).
8. A method for testing a ventilation simulation environment for a double-hole tunnel construction, using a ventilation simulation environment testing system for a double-hole tunnel construction as claimed in claims 1 to 7, characterized in that: The following steps are involved: S1: Turn on the variable frequency air conditioner (12) to keep the temperature and humidity in the left line of the main tunnel (1), the right line of the main tunnel (2), the first transverse passage (301), the second transverse passage (302), and the third transverse passage (303) at the set standard values; S2: Turn on the dust booster fan (602) and the dust switch (601), and turn on the stirring fan (11) so that the dust concentration in each location of the left line (1) of the main tunnel, the right line (2) of the main tunnel, the first transverse channel (301), the second transverse channel (302), and the third transverse channel (303) is maintained at the set standard value; S3: Turn on the gas booster pump (704) and the gas switch (701), and turn on the stirring fan (11) so that the concentration of harmful gases in the left line of the main tunnel (1), the right line of the main tunnel (2), the first transverse channel (301), the second transverse channel (302), and the third transverse channel (303) are maintained at the set standard value; S4: Turn on the air blower (9) to supply air to the left tunnel line (1) and the right tunnel line (2) through the air duct (901) at the set wind speed and wind pressure; S5: Collecting real-time data from dust sensors (602), harmful gas sensors (702), temperature and humidity sensors (8), and wind speed and pressure sensors (902) at various locations; S6: Open the inlet damper (1), repeat steps S1 to S5, change the dust concentration levels at the left line of the main tunnel (1), the right line of the main tunnel (2) and each cross channel (3), and study the dust removal effect of ventilation under different dust concentrations and the movement law of dust; S7: Open the inlet damper (1), repeat steps S1 to S5, change the concentration level of harmful gases at the left line of the main tunnel (1), the right line of the main tunnel (2) and each cross channel (3), and study the purification effect of ventilation and the migration law of harmful gases under different concentrations of harmful gases; S8: Open the inlet baffle (16), repeat steps S1 to S5, change the temperature levels at the left line of the main tunnel (1), the right line of the main tunnel (2) and each cross channel (3), and study the cooling effect of ventilation under different temperature conditions; S9: Open the inlet damper (16), repeat steps S1 to S5, change the humidity levels of the left line of the main tunnel (1), the right line of the main tunnel (2) and each cross channel (3), and study the dehumidification effect of ventilation under different humidity conditions; S10: repeating steps S1 to S5, changing the dust concentration level in the entire test system, placing the purification and dust removal trolley (14) at various key positions to study the dust removal effect of the trolley; S11: Repeat steps S1 to S5, change the concentration level of harmful gases in the entire test system, and place the purification and dust removal trolley (14) at various key positions to study the purification effect of the trolley.