Visual simulation test device for load action process of contact channel shield tunneling machine

Abstract

The invention discloses a contact channel shield tunneling machine load action process visual simulation test device, and relates to the technical field of shield tunneling machine load simulation, the contact channel shield tunneling machine load action process visual simulation test device comprises a simulation stratum mechanism and a load applying mechanism, the load applying mechanism is arranged on the top of the simulation stratum mechanism, and the load applying mechanism comprises a side plate; a load applying assembly is connected with a power assembly arranged in a stratum simulating mechanism by arranging a load applying mechanism, a servo motor is utilized to push the load applying assembly to operate and apply soil pressure, and the working states of the shield tunneling machine in different soil pressure states are simulated; the working states of the shield tunneling machine under different water pressure loads are detected, detected data are processed and analyzed, the optimal tunneling speed of the shield tunneling machine under different environments is determined, and the efficiency of tunneling work is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shield machine load simulation, in particular to a visual simulation test device for the load action process of a connecting passage shield tunneling machine. BACKGROUND

[0002] A connecting passage is a key structure connecting two parallel tunnels or a tunnel and a vertical shaft, and is mainly used for emergency evacuation, pipeline layout and equipment maintenance. When the connecting passage is constructed, a shield construction method is usually used. The shield construction method is a tunneling machine that constructs (lays) a "shield" (referring to a supporting segment) while tunneling, which is different from the open construction method.

[0003] However, the existing connecting passage shield tunneling machine has the following disadvantages:

[0004] When the shield tunneling machine is used to build the connecting passage, it will be affected by various loads during the work process, and it is not convenient to scientifically monitor and evaluate the load action process, and it is not convenient to determine the best tunneling speed of the shield tunneling machine in different environments. Field tests are required, which increases the cost of field tests and is not conducive to scheme optimization, and will also affect the efficiency of construction.

[0005] Therefore, we propose a visual simulation test device for the load action process of a connecting passage shield tunneling machine to solve the problems mentioned above. SUMMARY

[0006] The purpose of the present application is to provide a visual simulation test device for the load action process of a connecting passage shield tunneling machine. By setting a load applying mechanism, the load applying assembly is connected to the power assembly provided in the simulation stratum mechanism. The servo motor is used to drive the load applying assembly to run, apply soil pressure, simulate the working state of the shield tunneling machine under different soil pressure conditions, and set a permeable water pressure assembly. By simulating groundwater seepage, the working state of the shield tunneling machine under different water pressure loads is detected, the detected data is processed and analyzed, the best tunneling speed of the shield tunneling machine in different environments is determined, and the efficiency of the tunneling work is improved, so as to solve the problems in the above background.

[0007] To achieve the above purpose, the present application provides the following technical scheme: a visual simulation test device for the load action process of a connecting passage shield tunneling machine, comprising a simulation stratum mechanism and a load applying mechanism, the load applying mechanism is arranged on the top of the simulation stratum mechanism;

[0008] The load applying mechanism comprises a side plate, an inclined support fixedly installed on the outer side of the side plate, a connecting rod and an electric push rod penetrating through the inner part of the side plate, three groups of push plates provided on the inner wall of the side plate, one group of the push plates being fixedly connected with the inner wall of the side plate, the other two groups of the push plates being fixedly connected with the connecting rod and the electric push rod respectively on one side, spring buffers fixedly connected with the two groups of the push plates on the side close to the side plate, second installation grooves provided in the inner part of the three groups of the push plates, installation bases connected with the second installation grooves through bolts, pressure sensors fixedly installed on one side of the installation bases, and detection ends of the pressure sensors penetrating through the push plates.

[0009] Preferably, two groups of baffle plates are penetrating through the inner part of the side plate, the two groups of the baffle plates are provided between the three groups of the push plates, the two groups of the baffle plates are fixedly connected with the two groups of the push plates on one side respectively, and limiting plates are fixedly connected with the outer ends of the two groups of the baffle plates.

[0010] Preferably, a connecting plate is fixedly connected with the side plate on one side, and a push plate is fixedly installed on the bottom of the connecting plate.

[0011] Preferably, a reinforcing groove is provided on the top of the side plate, a reinforcing rib is provided in the reinforcing groove, and the reinforcing rib is fixed to the top of the side plate through bolts.

[0012] Preferably, the simulation formation mechanism comprises a support base plate, a simulation box body fixedly connected with the top of the support base plate, and a group of sliding grooves provided in the inner part of the support base plate, and sliding blocks are slidingly connected with the inner part of the group of the sliding grooves.

[0013] Preferably, an insertion groove is provided on the top of each of the group of the sliding blocks, and a bidirectional screw rod penetrates through the inner part of each of the group of the sliding blocks, the bidirectional screw rod is inserted into the inner part of the support base plate, and one end of the bidirectional screw rod penetrates through the support base plate.

[0014] Preferably, a servo motor is fixedly installed on one side of the support base plate, and the output end of the servo motor is fixedly connected with one end of the bidirectional screw rod.

[0015] Preferably, a window is fixedly provided in the inner part of the simulation box body, a U-shaped plate is fixedly installed on one side of the simulation box body, a control panel is fixedly installed on one side of the U-shaped plate, a high-speed camera group and a laser displacement sensor are fixedly installed on the side close to the window of the U-shaped plate.

[0016] Preferably, a first installation groove is provided in the inner part of the simulation box body, a water pipe and a water-permeable plate are installed in the first installation groove, the water-permeable plate is provided on the top of the water pipe, a water outlet penetrates through the outer surface wall of the water pipe, and a pore water pressure gauge is installed on the bottom of the water-permeable plate.

[0017] Preferably, the side plates are arranged on both sides of the simulation box and are fixedly connected by bolts, the plug-in plate is inserted into the inside of the slot, the advancing plate and the sliding block are connected by bolts, the inclined struts and the supporting bottom plate are connected by bolts, and the control panel is connected with a high-speed camera group, a laser displacement sensor, a pore water pressure meter and a pressure sensor.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1、The load applying mechanism is arranged, the load applying assembly is connected with the power assembly arranged in the simulated stratum mechanism, the servo motor is used to push the load applying assembly to run, the earth pressure is applied, the working state of the shield tunneling machine under different earth pressure states is simulated, the permeable water pressure assembly is arranged, the underground water permeation is simulated, the working state of the shield tunneling machine under different water pressure loads is detected, the detected data is processed and analyzed, and the best tunneling speed of the shield tunneling machine under different environments is determined, so that the efficiency of the tunneling work is improved.

[0020] 2、The device simulates the load action process of the shield tunneling machine in the actual construction process of the connecting passage in a systematic way, the window is arranged to visually monitor the test process, the high-speed camera group and the laser displacement sensor are installed and used, and the dynamic change of the simulated stratum under the working state of the shield tunneling machine is monitored, so that the performance of the shield tunneling machine in the connecting passage construction and the bearing capacity of the tunnel structure are evaluated, and a scientific basis is provided for the design, construction and maintenance of the tunnel engineering. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view structural perspective view of the visual simulation test device for the load action process of the connecting passage shield tunneling machine.

[0022] Figure 2 It is a rear view structural perspective view of the visual simulation test device for the load action process of the connecting passage shield tunneling machine.

[0023] Figure 3 It is a structural perspective view of the stratum simulation mechanism in the visual simulation test device for the load action process of the connecting passage shield tunneling machine.

[0024] Figure 4 It is a split structural perspective view of the stratum simulation mechanism in the visual simulation test device for the load action process of the connecting passage shield tunneling machine.

[0025] Figure 5 It is a front view structural perspective view of the load applying mechanism in the visual simulation test device for the load action process of the connecting passage shield tunneling machine.

[0026] Figure 6This is a side structural stereogram of a load application structure in a visual simulation test device for a load action process of a connecting channel shield tunneling machine according to the present invention;

[0027] Figure 7 This is a disassembled structural stereogram of a load application mechanism in a visual simulation test device for a load action process of a connecting channel shield tunneling machine according to the present invention;

[0028] Figure 8 The present invention is a visual simulation test device for the load action process of a connecting channel shield tunneling machine Figure 7 Enlarged view of point A in the middle.

[0029] In the figure: 1. Simulated stratum structure; 101. Support base plate; 102. Simulated box; 103. Slide groove; 104. Slider; 105. Slot; 106. Bidirectional screw; 107. Servo motor; 108. Window; 109. U-shaped plate; 110. Control panel; 111. High-speed camera assembly; 112. Laser displacement sensor; 113. First mounting slot; 114. Water pipe; 115. Water outlet; 116. Permeable plate; 117. Pore water pressure gauge; 2. Load application mechanism; 201. Side plate; 202. Diagonal brace; 203. Baffle; 204. Limit plate; 205. Reinforcement groove; 206. Reinforcement rib; 207. Connecting rod; 208. Electric push rod; 209. Push plate; 210. Spring buffer; 211. Second mounting groove; 212. Mounting base; 213. Pressure sensor; 214. Connecting plate; 215. Propulsion plate; 216. Insert plate. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] Please see the attached Figure 1 -Attached Figure 8 As shown, the present invention provides a technical solution: a visual simulation test device for the load action process of a connecting channel shield tunneling machine, comprising a simulated stratum mechanism 1 and a load applying mechanism 2, wherein the load applying mechanism 2 is arranged on the top of the simulated stratum mechanism 1.

[0032] Example 1, according to Figures 5-8As shown, the load applying mechanism 2 comprises a side plate 201, an inclined brace 202 is fixedly installed on the outer side of the side plate 201, a connecting rod 207 and an electric push rod 208 are penetrated through the inner part of the side plate 201, three groups of push plates 209 are arranged on the inner wall of the side plate 201, one group of push plates 209 is fixedly connected with the inner wall of the side plate 201 respectively, the other two groups of push plates 209 are fixedly connected with the connecting rod 207 and the electric push rod 208 respectively on one side, the two groups of push plates 209 are fixedly connected with spring buffers 210 on the side close to the side plate 201, the inner part of the three groups of push plates 209 is provided with a second mounting groove 211, the second mounting groove 211 is connected with a mounting base 212 through bolts in the inner part, the mounting base 212 is fixedly installed with a pressure sensor 213 on one side, and the detection end of the pressure sensor 213 is penetrated through the push plate 209.

[0033] The effect achieved by the whole embodiment 1 is that: the above-mentioned components, by installing the inclined brace 202 on the outer side of the side plate 201, increasing the structural strength of the box body, facilitating stable support, arranging three groups of push plates 209 on the inner wall of the side plate 201, penetrating the connecting rod 207 and the electric push rod 208 in the inner part of the side plate 201, connecting the connecting rod 207 and the electric push rod 208 with the push plate 215 as a whole through the connecting plate 214, and then fixing the connecting rod 207 and the electric push rod 208 with the two groups of push plates 209 respectively, adjusting the distance between the two groups of push plates 209 by the threaded connection between the bidirectional screw rod 106 and the sliding block 104 driven by the servo motor 107, realizing the first propulsion to increase the earth pressure, completing the shield tunneling machine load action process test in this state, and then driving one group of push plates 209 to continue to approach each other by the electric push rod 208, performing secondary load application, and then testing the shield tunneling machine load action process in the newly adjusted environment again. The inner part of the push plate 209 is installed with the pressure sensor 213, which detects the earth pressure under the initial state, the first load application and the second load application, and transmits the detection value to the control panel 110 for recording, and the two groups of movable push plates 209 are fixedly installed with the spring buffers 210 on the side close to the side plate 201, which buffers the pressure of the push plate 209 contacting the side plate 201 when restoring the initial position of the push plate 209 after the test is completed, avoiding equipment damage.

[0034] Embodiment 2, according to Figures 5-8As shown, the inside of the side plate 201 is penetrated by two groups of baffles 203, which are respectively arranged between the three groups of push plates 209, one side of the two groups of baffles 203 is respectively fixedly connected with one side of the two groups of push plates 209, and the outer ends of the two groups of baffles 203 are all fixedly connected with the limiting plates 204. One end of the connecting rod 207 and the electric push rod 208 is fixedly connected with the connecting plate 214; one side of the connecting plate 214 is fixedly connected with the advancing plate 215, and the bottom of the advancing plate 215 is fixedly installed with the plug plate 216; the top of the side plate 201 is provided with the reinforcing groove 205, and the inside of the reinforcing groove 205 is provided with the reinforcing rib 206, which is fixed to the top of the side plate 201 by bolts.

[0035] The effect achieved by the whole embodiment 2 is that: the above-mentioned components are connected into an integral whole by the connecting plate 214 connecting the connecting rod 207, the electric push rod 208 and the advancing plate 215, the connecting rod 207 and the electric push rod 208 are respectively fixedly connected with the two groups of push plates 209, the plug plate 216 installed at the bottom of the advancing plate 215 is inserted into the inside of the insertion groove 105 in the inside of the sliding block 104, the advancing plate 215 and the sliding block 104 are connected by bolts, the bidirectional screw rod 106 is driven by the servo motor 107 to be threadedly connected with the sliding block 104, the distance between the two groups of push plates 209 is adjusted, the first-stage advancing is realized to increase the soil pressure, the electric push rod 208 is used to provide the second-stage advancing force for one group of push plates 209, and different soil pressure environments are generated.

[0036] Embodiment 3, according to Figures 1-8As shown, the simulation formation mechanism 1 comprises a support base plate 101, the top of which is fixedly connected with a simulation box 102, the inside of the support base plate 101 is provided with a group of sliding grooves 103, and the inside of each sliding groove 103 is slidably connected with a sliding block 104; the top of each sliding block 104 is provided with a slot 105, and a bidirectional screw rod 106 penetrates through the inside of each sliding block 104, is inserted into the inside of the support base plate 101, and penetrates through the support base plate 101 at one end; one side of the support base plate 101 is fixedly installed with a servo motor 107, the output end of the servo motor 107 is fixedly connected with one end of the bidirectional screw rod 106; the inside of the simulation box 102 is fixedly provided with a window 108, one side of the simulation box 102 is fixedly installed with a U-shaped plate 109, one side of the U-shaped plate 109 is fixedly installed with a control panel 110, and one side of the U-shaped plate 109 close to the window 108 is fixedly installed with a high-speed camera group 111 and a laser displacement sensor 112; the inside of the simulation box 102 is provided with a first installation groove 113, the inside of the first installation groove 113 is installed with a water pipe 114 and a water-permeable plate 116, the water-permeable plate 116 is arranged at the top of the water pipe 114, the outer wall of the water pipe 114 penetrates through a water outlet 115, and the bottom of the water-permeable plate 116 is installed with a pore water pressure gauge 117; the side plates 201 are arranged at both sides of the simulation box 102 and are fixedly connected through bolts, the plug plates 216 are inserted into the slots 105, the propelling plates 215 and the sliding blocks 104 are connected through bolts, the inclined braces 202 are connected with the support base plate 101 through bolts, and the control panel 110 is signal connected with the high-speed camera group 111, the laser displacement sensor 112, the pore water pressure gauge 117 and the pressure sensor 213.

[0037] The effect achieved by the whole embodiment 3 is that: the above-mentioned components, by arranging the support bottom plate 101, facilitate the integration and support of the whole device, increase the contact area with the ground, maintain the stability of the device during the test, fix and connect the simulation box 102 on the top of the support bottom plate 101, connect it with the side plate 201 for use, for containing the shield tunneling machine model and the simulated stratum material, providing a semi-closed experimental environment, opening a set of sliding grooves 103 in the inside of the support bottom plate 101, slidingly connecting the sliding block 104 in the inside of the set of sliding grooves 103, inserting the bidirectional screw rod 106 in the inside of the sliding block 104 and the support bottom plate 101, then fixedly connecting the bidirectional screw rod 106 with the servo motor 107 fixedly installed on one side of the support bottom plate 101, using the servo motor 107 to drive the bidirectional screw rod 106 to rotate, moving the sliding block 104, providing power for the load applying mechanism 2, facilitating the recording of the working state of the shield tunneling machine under different loads. The high-speed camera group 111 and the laser displacement sensor 112 are installed on one side of the U-shaped plate 109 close to the window 108 in the inside of the simulation box 102, the dynamic changes of the simulated stratum under the working state of the shield tunneling machine are monitored, then the water pipe 114 and the water permeable plate 116 are installed in the inside of the first installation groove 113 opened in the inside of the simulation box 102, in the implementation process, the water pipe 114 is connected with the external pipeline to realize water supply, the water is discharged through the water outlet 115 penetratingly opened on the outer wall of the water pipe 114, the water seeps out through the water permeable plate 116, simulating the underground water seepage, then the pore water pressure meter 117 is used to detect the water seepage pressure, the pressure sensor 213 is installed on the end of the simulation box 102 opposite to the entrance and exit, detects the advancing force generated in the tunneling process of the shield tunneling machine, and generates the load action value of each party.

[0038] The working principle of the whole device is that: when the device is used, first, the transparent simulated soil material is filled in the inside of the box of the device, the shield machine model is arranged in the inside of the box, the pressure sensor installed in the inside of the box is used to detect the jacking force, soil pressure and water seepage pressure and other loads of the shield machine under the original soil sample, and the detected values are transmitted to the control panel 110 for recording and analysis. Secondly, the soil pressure and water seepage pressure are applied through the load applying mechanism 2, the high-speed camera group 111 and the laser displacement sensor 112 are used to monitor the load action process of the shield machine under the same speed and different loads, all the data collected in the test process are arranged, the subsequent data processing and analysis work is carried out, so as to evaluate the performance of the shield tunneling machine in the construction of the connecting passage and the bearing capacity of the tunnel structure, and determine the best matching relationship between the tunneling speed and the grouting pressure.

[0039] In the design of the simulated stratum mechanism 1, by setting the support base plate 101, the overall device is facilitated to be integrated and supported, the contact area with the ground is increased, the stability of the device during the test process is maintained, the simulated box body 102 is fixedly connected at the top of the support base plate 101, and the simulated box body 102 is connected with the side plate 201 for use, which is used for accommodating the shield tunneling machine model and the simulated stratum material, and provides a semi-closed experimental environment, a group of sliding grooves 103 are opened in the inside of the support base plate 101, the sliding blocks 104 are slidingly connected in the inside of the group of sliding grooves 103, the bidirectional screw rod 106 is inserted in the inside of the sliding block 104 and the support base plate 101, the bidirectional screw rod 106 is fixedly connected with the servo motor 107 fixedly installed on one side of the support base plate 101, the servo motor 107 is used to drive the bidirectional screw rod 106 to rotate, the sliding block 104 is moved, and power is provided for the load applying mechanism 2, so that the working state of the shield tunneling machine under different loads is facilitated to be recorded. The window 108 is arranged in the inside of the simulated box body 102, the high-speed camera set 111 and the laser displacement sensor 112 are installed on one side of the U-shaped plate 109 close to the window 108, the dynamic change of the simulated stratum under the working state of the shield tunneling machine is monitored, then the water pipe 114 and the water permeable plate 116 are installed in the inside of the first installation groove 113 opened in the inside of the simulated box body 102, in the implementation process, the water pipe 114 is connected with the external pipeline to realize water supply, the water outlet 115 penetratingly opened on the outer wall of the water pipe 114 is used to discharge water, the water seeps out through the water permeable plate 116 to simulate the underground water seepage, and then the pore water pressure gauge 117 is used to detect the water seepage pressure, the pressure sensor 213 is installed at the end of the simulated box body 102 opposite to the entrance and exit, the advancing force generated in the tunneling process of the shield tunneling machine is detected, and various load action values are generated.

[0040] The load applying mechanism 2 is set in the setting process, the side plate 201 is set on both sides of the simulation box 102, which is convenient for disassembly and cleaning of the device, in use, the side plate 201 is fixedly connected with the simulation box 102 by bolts, the inclined brace 202 is used to increase the structural strength of the box, which is convenient for realizing stable support, the plug plate 216 installed at the bottom of the push plate 215 is inserted into the plug slot 105 in the sliding block 104, the push plate 215 and the sliding block 104 are connected by bolts, and power is provided for the push assembly. Three groups of push plates 209 are arranged on the inner wall of the side plate 201, the connecting rod 207 and the electric push rod 208 are penetrated in the side plate 201, the connecting rod 207 and the electric push rod 208 are connected with the push plate 215 as a whole by the connecting plate 214, the connecting rod 207 and the electric push rod 208 are fixedly connected with two groups of push plates 209 respectively, the bidirectional screw rod 106 is threadedly connected with the sliding block 104 by the servo motor 107, the distance between the two groups of push plates 209 is adjusted, the soil pressure is increased by one-stage pushing, the shield tunneling machine load action test in this state is completed, one group of push plates 209 is driven by the electric push rod 208 to continue to approach each other, secondary load application is carried out, and the shield tunneling machine load action process in the newly adjusted environment is tested again. The pressure sensor 213 is installed in the push plate 209, the soil pressure under the initial state, one-stage load application and secondary load application is detected by the pressure sensor 213, and the detection value is transmitted to the control panel 110 for recording, the two groups of push plates 209 approaching the side plate 201 are fixedly provided with the spring buffer 210, when the initial position of the push plate 209 is restored after the test is completed, the pressure of the buffer push plate 209 contacting the side plate 201 is buffered, and equipment damage is avoided. The reinforcing groove 205 is arranged at the top of the side plate 201, the reinforcing rib 206 is arranged in the reinforcing groove 205, and the reinforcing rib 206 is fixedly arranged at the top of the simulation box 102 by bolts, so that the transverse support capacity is improved, and the stability of the box structure is ensured.

[0041] Finally, all the data collected in the test process are arranged, subsequent data processing and analysis are carried out, the performance of the shield tunneling machine in the connection passage construction and the bearing capacity of the tunnel structure are evaluated, the load action process of the shield tunneling machine in the actual construction process is simulated systematically, scientific basis is provided for the design, construction and maintenance of the tunnel engineering, the best matching relationship between the tunneling speed and the grouting pressure is determined, and the working efficiency of the shield tunneling machine is improved.

[0042] Although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A visual simulation test device for a shield tunnel boring machine load action process, comprising a simulated stratum mechanism (1) and a load applying mechanism (2), wherein the load applying mechanism (2) is arranged on the top of the simulated stratum mechanism (1), and is characterized in that: The load applying mechanism (2) comprises a side plate (201), an outer side of the side plate (201) is fixedly mounted with a diagonal brace (202), the interior of the side plate (201) is penetrated by a connecting rod (207) and an electric push rod (208), and the inner wall of the side plate (201) is provided with three groups of push plates (209), one group of push plates (209) is respectively fixedly connected to the inner wall of the side plate (201), and one side of the other two groups of push plates (209) is respectively connected to the connecting rod (207), the electric push rod (208), and the push plates (209). (208) is fixedly connected, and a spring buffer (210) is fixedly connected to one side of the two groups of push plates (209) close to the side plate (201), and a second mounting groove (211) is opened inside the three groups of push plates (209), and the inside of the second mounting groove (211) is connected to a mounting base (212) by bolts, and a pressure sensor (213) is fixedly installed on one side of the mounting base (212), and the detection end of the pressure sensor (213) passes through the push plate (209).

2. A visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 1, characterized in that: Two groups of baffles (203) are passed through the interior of the side plate (201), and the two groups of baffles (203) are respectively arranged between the three groups of push plates (209). One side of the two groups of baffles (203) is fixedly connected to one side of the two groups of push plates (209). The outer ends of the two groups of baffles (203) are fixedly connected to the limit plate (204), and one end of the connecting rod (207) and the electric push rod (208) is fixedly connected to the connecting plate (214).

3. A visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 2, characterized in that: A push plate (215) is fixedly connected to one side of the connecting plate (214), and an inserting plate (216) is fixedly installed on the bottom of the push plate (215).

4. A visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 1, characterized in that: A reinforcement groove (205) is provided on the top of the side plate (201), and a reinforcement rib (206) is provided inside the reinforcement groove (205). The reinforcement rib (206) is fixed to the top of the side plate (201) by bolts.

5. The visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 3 is characterized by: The simulated formation mechanism (1) comprises a support base plate (101), the top of the support base plate (101) is fixedly connected to a simulation box (102), a group of sliding grooves (103) are provided inside the support base plate (101), and a slider (104) is slidably connected inside each of the group of sliding grooves (103).

6. A visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 5, characterized in that: A slot (105) is provided on the top of each of the sliders (104), and a bidirectional screw (106) is passed through the interior of each of the sliders (104). The bidirectional screw (106) is inserted into the interior of the supporting base plate (101), and one end of the bidirectional screw (106) passes through the supporting base plate (101).

7. A visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 6, characterized in that: A servo motor (107) is fixedly mounted on one side of the supporting base plate (101), and an output end of the servo motor (107) is fixedly connected to one end of the bidirectional screw (106).

8. The visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 5, characterized in that: A viewing window (108) is fixedly provided inside the simulation box (102), a U-shaped plate (109) is fixedly installed on one side of the simulation box (102), a control panel (110) is fixedly installed on one side of the U-shaped plate (109), and a high-speed camera group (111) and a laser displacement sensor (112) are fixedly installed on the side of the U-shaped plate (109) close to the viewing window (108).

9. A visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 8, characterized in that: A first installation groove (113) is provided inside the simulation box (102), a water pipe (114) and a water permeable plate (116) are installed inside the first installation groove (113), the water permeable plate (116) is arranged on the top of the water pipe (114), a water outlet (115) is passed through the outer wall of the water pipe (114), and a pore water pressure gauge (117) is installed at the bottom of the water permeable plate (116).

10. A visual simulation test device for the load action process of a connecting channel shield tunneling machine according to claim 9, characterized in that: The side panels (201) are arranged on both sides of the simulation box (102) and are fixedly connected by bolts. The plug plate (216) is inserted into the interior of the slot (105). The push plate (215) and the slider (104) are connected by bolts. The diagonal brace (202) and the supporting base plate (101) are connected by bolts. The control panel (110) is connected to the high-speed camera group (111), the laser displacement sensor (112), the pore water pressure gauge (117), and the pressure sensor (213) for signal communication.

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