CN218157893U - Transparent soil model test device for simulating change of peripheral soil displacement field caused by tunnel excavation of shield tunneling machine - Google Patents
Transparent soil model test device for simulating change of peripheral soil displacement field caused by tunnel excavation of shield tunneling machine Download PDFInfo
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- CN218157893U CN218157893U CN202221030481.7U CN202221030481U CN218157893U CN 218157893 U CN218157893 U CN 218157893U CN 202221030481 U CN202221030481 U CN 202221030481U CN 218157893 U CN218157893 U CN 218157893U
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Abstract
The utility model discloses a simulation shield constructs quick-witted tunnel excavation and arouses transparent soil model test device of soil body displacement field change on every side, including transparent soil model case, shield structure analogue means, tunnel come-up analogue means, shield structure machine front shield rotation analogue means, shield structure machine drive analogue means, base, two industrial camera and laser emitter that gos forward. During testing, the cutter head simulation device is enabled to rotate at a constant speed through the shield machine front shield rotation simulation device, and the shield machine simulation device is enabled to advance at a constant speed through the shield machine advancing driving simulation device. After the excavation is finished, the standing shield machine simulating device and the industrial camera continuously record the change of the transparent soil speckle field. The utility model discloses can truly simulate the process that the shield constructs quick-witted excavation tunnel to can the accurate monitoring shield construct the quick-witted analogue means soil body displacement field around change.
Description
Technical Field
The utility model relates to a geotechnical engineering technical field, concretely relates to simulation shield constructs transparent soil model test device that quick-witted tunnel excavation arouses around soil body displacement field change.
Background
With the rapid development of urban construction in China, higher requirements are also placed on the operation speed and the transportation capacity of rail transit. The urban rail transit plays a great role in urban traffic due to the characteristics of safety, rapidness, high transport capacity and the like. The shield machine can realize automatic operation in the whole process of propelling, soil discharging, splicing lining and the like during construction, and the construction labor intensity is low; ground traffic and facilities are not influenced, and facilities such as underground pipelines and the like are not influenced; the river course crossing device has the advantages that shipping is not influenced when the river course crossing device passes through the river course, construction is not influenced by weather conditions such as seasons, wind, rain and the like, and noise and disturbance are avoided in construction, so that the river course crossing device is widely applied in the world. Therefore, the research on the change of the surrounding soil displacement field in the process of excavating the tunnel by the shield machine has important significance for controlling the deformation of the tunnel excavated by the existing shield machine and optimizing the tunnel excavation technology of the shield machine.
The transparent soil model test technology is widely applied to research the change of the displacement field of the surrounding soil body during tunnel construction. However, most transparent soil tunnel simulation experiments simulate the tunnel construction process by using prefabricated water pipes for drainage, and in the simulation method, the tunnel excavation process does not conform to the actual excavation process; the discharged water weight is inconsistent with the transparent soil weight, so that the interaction between the tunnel model and the surrounding soil body is influenced; the displacement field of the surrounding soil body can be changed greatly without tunnel lining support formed in the process of simulating excavation.
Therefore, a transparent soil indoor model test device for simulating the change of the displacement field of the surrounding soil body caused by the shield tunneling machine excavation tunnel needs to be developed.
Disclosure of Invention
The utility model aims at providing a simulation shield constructs quick-witted tunnel excavation and arouses transparent soil model test device of soil body displacement field change on every side to solve the problem that exists among the prior art.
For realizing the utility model discloses the technical scheme that the purpose and adoption is such, a simulation shield constructs quick-witted tunnel excavation and arouses transparent soil model test device of soil body displacement field change on every side, including transparent soil model box, shield structure simulation device, tunnel come-up analogue means, shield structure machine front shield rotation analogue means, shield structure machine drive analogue means that gos forward, base, two industrial camera and laser emitter.
The base comprises a support and a transparent glass plate installed on the support, the support is installed on the ground, and the transparent soil model box is placed on the transparent glass plate.
The transparent soil model box is a rectangular box body with an open upper end, one side plate of the transparent soil model box is marked as a side plate A, and the inner wall of the side plate A is flush with one side edge of the transparent glass plate.
A vertical rectangular groove is formed in a side plate A of the transparent soil model box and penetrates through the inner wall, the outer wall, the upper edge and the lower edge of the side plate A.
All seted up spout I on two vertical edges of rectangular channel, spout I runs through curb plate A's upper and lower edge.
The tunnel come-up simulation device is a vertically arranged rectangular plate, a circular through hole is formed in the tunnel come-up simulation device, and the sealing ring is installed in the circular through hole of the tunnel come-up simulation device.
All be provided with bar slider I on two vertical edges of tunnel come-up analogue means, the upper and lower end of bar slider I flushes with tunnel come-up analogue means's upper and lower end respectively, bar slider I and I phase-match of spout.
Two bar slider I on the tunnel come-up analogue means are installed with I cooperation of two spouts on the vertical edge of rectangular channel respectively, and curb plate A's upper and lower edge is stretched out respectively to tunnel come-up analogue means's upper and lower end.
The shield simulation device comprises a shield body simulation model, a cutter head simulation device and a cutter head driving simulation device.
The shield body simulation model comprises a shield body model and two convex blocks, the shield body model is of a hollow cylinder structure with two open ends, the two ends of the shield body model are respectively marked as the front end and the rear end, the two convex blocks are fixed on the inner wall of the shield body model and are close to the front end of the shield body model, and a connecting line of the two convex blocks penetrates through the axis of the shield body model.
The cutter head driving simulation device comprises a connecting disc, a driving rod, a driving disc and a pushing rod, wherein two ends of the pushing rod are respectively fixed on two convex blocks, a through hole for the driving rod to penetrate through is formed in the middle point of the pushing rod, and a through hole for the driving rod to penetrate through is formed in the center of the connecting disc.
The connecting disc is connected to one side of the driving disc and coaxial with the driving disc, the diameter of the driving disc is consistent with the inner diameter of the shield body model, the diameter of the connecting disc is smaller than the inner diameter of the shield body model, the connecting disc and the driving disc are installed in the shield body model, and one side, back to the connecting disc, of the driving disc is flush with the front end face of the shield body model.
The cutter head simulation device is arranged on one side of the driving disc, which faces away from the connecting disc.
The shield body model is characterized in that a limiting bulge is arranged on the driving rod, one end of the driving rod extends into the shield body model from the rear end and penetrates through the propelling rod and the connecting disc, the limiting bulge is tightly abutted against the propelling rod, and one end of the driving rod, extending out of the connecting disc, is connected with the driving disc.
The front end of the shield body model penetrates through the sealing ring and is embedded in the transparent soil model box, and the rear end of the shield body model is positioned outside the transparent soil model box.
The shield tunneling machine forward driving simulation device comprises a sliding plate, a connecting device, a steel wire, two engine cases I, a rolling device and a rectangular steel rod.
The sliding plate is arranged on the ground, the connecting device is connected to the sliding plate in a sliding mode, the connecting device is connected with the rolling device through a steel wire, the rolling device is connected with engines in the two engine cases I, the engines drive the rolling device and drive the connecting device to slide through the steel wire, the sliding direction of the connecting device is perpendicular to the side plate A of the transparent soil model box, and the lower end of the vertical rectangular steel rod is fixed to the connecting device.
The rotary simulation device for the front shield of the shield tunneling machine comprises an engine case II, wherein a rectangular through hole and a height adjusting bolt are arranged on the engine case II, the rectangular through hole is matched with the section size of a rectangular steel rod, the engine case II is installed on the rectangular steel rod through the rectangular through hole, and the end part of a driving rod stretches into the engine case II and is connected with an engine output shaft inside the engine case II.
The two industrial cameras are all installed on the ground and are respectively located on two adjacent sides of the transparent soil model box, and one industrial camera is located on the opposite side of the shield tunneling machine forward driving simulation device.
The laser emitter is arranged below the transparent glass plate and is opposite to the transparent soil model box.
Furthermore, the cutter head simulation device is of a disc structure formed by connecting a plurality of blades, and the blades are made of stainless steel.
Furthermore, a cross-shaped groove is formed in the driving disc, and the driving rod is connected with the driving disc through the cross-shaped groove.
Furthermore, two mutually spaced slide rails are arranged on the slide plate and are perpendicular to the side plate A of the transparent soil model box.
The connecting device is provided with two grooves matched with the sliding rails, and the connecting device is connected to the sliding rails of the sliding plate in a sliding mode through the grooves.
Further, a transparent film is arranged on the inner side of the side plate A of the transparent soil model box, the transparent film is close to the bottom of the transparent soil model box and is positioned at a gap between the transparent soil model box and the tunnel floating simulation device, silicone grease is coated at the position where the transparent soil model box and the tunnel floating simulation device are connected, and silicone grease is coated at the position where the transparent film and the tunnel floating simulation device are connected.
Further, the transparent soil model box, the shield body simulation model, the tunnel floating simulation device and the transparent glass plate are all made of organic glass.
The beneficial effects of the utility model reside in that:
1. the utility model can simulate the process of excavating a tunnel by a shield machine through a shield machine simulation device, a tunnel floating simulation device, a shield machine front shield rotation simulation device and a shield machine forward driving simulation device;
2. the utility model can realize the visualization and non-plug-in real-time high-precision measurement of the internal deformation of the soil body by the PIV technology, and can more intuitively cause the change rule of the displacement field of the surrounding soil body in the tunnel excavation of the shield machine;
3. the size of the shield tunneling machine simulation model, the tunnel excavation speed and the tunnel excavation depth can be adjusted according to research needs, and the shield tunneling machine simulation model can be further optimized and used for simulating the rock mass tunnel excavation process of the shield tunneling machine, so that the experimental device can simulate various working conditions;
4. the utility model discloses the system sets up rationally, and experimental convenient operation has higher reliability.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a schematic view of a transparent soil model box of the present invention;
fig. 3 is a schematic view of a middle shield tunneling machine simulation device according to the present invention;
FIG. 4 is a schematic view of a middle shield simulation model of the present invention;
fig. 5 is a plan view of the middle cutter head simulation device of the present invention;
fig. 6 is a structural diagram of the middle cutter drive simulation device of the utility model;
fig. 7 is a schematic view of the tunnel floating simulation device of the present invention;
fig. 8 is a schematic view of the front shield rotation simulation device of the middle shield tunneling machine of the present invention;
fig. 9 is a schematic view of the forward driving simulation device of the middle shield tunneling machine of the present invention;
fig. 10 is a schematic view of the base of the present invention.
In the figure: transparent soil model box 1, rectangular groove 101, chute I102, shield simulation device 2, shield simulation model 201, shield model 2011, bump 2012, cutter simulation device 202, blade 2021, cutter driving simulation device 203, connecting disc 2031, driving rod 2032, limit protrusion 20321, driving disc 2033, cross groove 20331, pushing rod 2034, tunnel floating simulation device 3, sealing ring 301, strip-shaped slider I302, shield front shield rotation simulation device 4, engine case II 401, rectangular through hole 4011, height adjusting bolt 4012, shield forward driving simulation device 5, sliding plate 501, sliding rail 5011, connecting device 502, groove 50211, steel wire 503, engine case I504, rolling device 505, rectangular steel rod 506, base 6, transparent glass plate 601, support 602, industrial camera 7 and laser emitter 8.
Detailed Description
The present invention will be further described with reference to the following examples, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and modifications can be made without departing from the technical spirit of the invention and according to the common technical knowledge and conventional means in the field, and all shall be included in the scope of the invention.
Example 1:
referring to fig. 1, the embodiment discloses a transparent soil model test device for simulating displacement field changes of surrounding soil bodies caused by tunnel excavation of a shield machine, which comprises a transparent soil model box 1, a shield machine simulation device 2, a tunnel floating simulation device 3, a shield machine front shield rotation simulation device 4, a shield machine forward driving simulation device 5, a base 6, two industrial cameras 7 and a laser emitter 8.
Referring to fig. 10, the base 6 includes a bracket 602 and a transparent glass plate 601 mounted on the bracket 602, the bracket 602 is mounted on the ground, and the transparent earth model box 1 is placed on the transparent glass plate 601.
The transparent soil model box 1 is a rectangular box body with an open upper end, one side plate of the transparent soil model box 1 is marked as a side plate A, and the inner wall of the side plate A is flush with one side edge of the transparent glass plate 601.
Referring to fig. 2, a vertical rectangular groove 101 is formed in a side plate a of the transparent soil model box 1, and the rectangular groove 101 penetrates through the inner and outer walls, the upper and lower edges of the side plate a.
Two vertical edges of the rectangular groove 101 are provided with sliding grooves I102, and the sliding grooves I102 penetrate through the upper edge and the lower edge of the side plate A.
Referring to fig. 7, the tunnel upward floating simulation device 3 is a vertically arranged rectangular plate, a circular through hole is formed in the tunnel upward floating simulation device 3, and a sealing ring 301 is installed in the circular through hole of the tunnel upward floating simulation device 3.
All be provided with bar slider I302 on two vertical edges of tunnel come-up analogue means 3, the upper and lower end of bar slider I302 flushes with tunnel come-up analogue means 3's upper and lower end respectively, and I302 and the I102 phase-match of spout of bar slider.
Two strip-shaped sliding blocks I302 on the tunnel upward floating simulation device 3 are respectively installed with two sliding grooves I102 on the vertical edge of the rectangular groove 101 in a matched mode, and the upper end and the lower end of the tunnel upward floating simulation device 3 extend out of the upper edge and the lower edge of the side plate A respectively.
The inner side of the side plate A of the transparent soil model box 1 is provided with a transparent film, the transparent film is close to the bottom of the transparent soil model box 1 and is positioned at a gap between the transparent soil model box 1 and the tunnel floating simulation device 3, the junction between the transparent soil model box 1 and the tunnel floating simulation device 3 is coated with silicone grease, and the junction between the transparent film and the tunnel floating simulation device 3 is coated with silicone grease. The transparent film is used for preventing gap liquid from flowing out of a bottom gap where the transparent soil model box 1 and the tunnel floating simulation device 3 are connected, and the silicone grease is used for reducing friction.
Referring to fig. 3, the shield simulation apparatus 2 includes a shield body simulation model 201, a cutter head simulation apparatus 202, and a cutter head drive simulation apparatus 203.
Referring to fig. 4, the shield simulation model 201 includes a shield model 2011 and two protrusions 2012, the shield model 2011 is a hollow cylinder structure with two open ends, the two ends of the shield model 2011 are respectively recorded as a front end and a rear end, the two protrusions 2012 are fixed on the inner wall of the shield model 2011 and are close to the front end of the shield model 2011, and a connecting line of the two protrusions 2012 passes through the axis of the shield model 2011.
Referring to fig. 6, the cutter head driving simulation apparatus 203 includes a connection disc 2031, a driving rod 2032, a driving disc 2033, and a pushing rod 2034, two ends of the pushing rod 2034 are respectively fixed on the two bumps 2012, a through hole for the driving rod 2032 to pass through is formed at a midpoint of the pushing rod 2034, and a through hole for the driving rod 2032 to pass through is formed at a center of the connection disc 2031.
The connecting disc 2031 is connected to one side of the driving disc 2033, the connecting disc 2031 and the driving disc 2033 are coaxial, the diameter of the driving disc 2033 is consistent with the inner diameter of the shield model 2011, the diameter of the connecting disc 2031 is smaller than the inner diameter of the shield model 2011, the connecting disc 2031 and the driving disc 2033 are installed in the shield model 2011, and one side of the driving disc 2033, which faces away from the connecting disc 2031, is flush with the front end face of the shield model 2011.
The cutter head simulator 202 is installed on the side of the drive disk 2033 opposite to the connecting disk 2031. Referring to fig. 5, the cutter head simulator 202 is a disk structure connected by a plurality of blades 2021, and the blades 2021 are made of stainless steel.
The driving rod 2032 is provided with a limiting protrusion 20321, one end of the driving rod 2032 extends into the shield body model 2011 from the rear end and penetrates through the propelling rod 2034 and the connecting disc 2031, the limiting protrusion 20321 is tightly abutted against the propelling rod 2034, and one end of the driving rod 2032 extending out of the connecting disc 2031 is connected with the driving disc 2033. The driving rod 2032 is freely rotatable on the pushing rod 2034, and the pushing rod 2034 can prevent the shield simulation model 201 from rotating along with the cutter head driving simulation apparatus 203.
The driving disk 2033 is provided with a cross-shaped groove 20331, and the driving rod 2032 is connected to the driving disk 2033 through the cross-shaped groove 20331.
The front end of the shield body model 2011 penetrates through the sealing ring 301 and is embedded in the transparent soil model box 1, and the rear end is positioned outside the transparent soil model box 1.
Referring to fig. 9, the shield tunneling machine forward driving simulation device 5 comprises a sliding plate 501, a connecting device 502, a steel wire 503, two engine cases i 504, a rolling device 505 and a rectangular steel rod 506.
The sliding plate 501 is installed on the ground, the connecting device 502 is connected to the sliding plate 501 in a sliding manner, two mutually spaced sliding rails 5011 are arranged on the sliding plate 501, and the sliding rails 5011 are perpendicular to the side plate A of the transparent soil model box 1.
The connecting device 502 is provided with two grooves 50211 matched with the sliding rails 5011, and the connecting device 502 is slidably connected to the sliding rails 5011 of the sliding plate 501 through the grooves 50211.
The connecting device 502 is connected with a rolling device 505 through a steel wire 503, the rolling device 505 is connected with engines in two engine cases I504, the engines drive the rolling device 505 and drive the connecting device 502 to slide through the steel wire 503, the sliding direction of the connecting device 502 is perpendicular to a side plate A of the transparent soil model case 1, and the lower end of the vertical rectangular steel rod 506 is fixed on the connecting device 502.
Referring to fig. 8, the front shield rotation simulation device 4 of the shield tunneling machine comprises an engine case ii 401, a rectangular through hole 4011 and a height adjusting bolt 4012 are arranged on the engine case ii 401, the rectangular through hole 4011 is matched with the cross-sectional dimension of a rectangular steel rod 506, the engine case ii 401 is mounted on the rectangular steel rod 506 through the rectangular through hole 4011, and the end of a driving rod 2032 extends into the engine case ii 401 and is connected with an engine output shaft inside the engine case ii 401.
The two industrial cameras 7 are all installed on the ground and are respectively located on two adjacent sides of the transparent soil model box 1, and one industrial camera 7 is located on the opposite side of the shield tunneling machine forward driving simulation device 5.
The laser transmitter 8 is installed below the transparent glass plate 601 and opposite to the transparent earth model box 1.
The transparent soil model box 1, the shield body simulation model 201, the tunnel floating simulation device 3 and the transparent glass plate 601 are all made of organic glass.
The test process of the device described in this example is as follows: firstly, manufacturing the transparent soil model box 1, the shield machine simulation device 2, the tunnel floating simulation device 3, the shield machine anterior shield rotation simulation device 4, the shield machine forward driving simulation device 5 and the base 6 according to the design size. And cleaning the transparent soil model box 1, the shield machine simulation device 2, the tunnel floating simulation device 3, the shield machine front shield rotation simulation device 4, the shield machine forward driving simulation device 5 and the base 6, and wiping with a dry towel. And then connecting the tunnel floating simulation device 3 with the transparent soil model box 1, inserting the shield tunneling simulation device 2 into the transparent soil model box 1 through the sealing ring 301, preparing transparent soil in the transparent soil model box 1 until the height of the transparent soil model box 1 is half, performing a sealing detection test, and detecting whether the sealing performance of the experimental device is good or not. In addition, a transparent film is laid on the inner side of the side plate a of the transparent soil model box 1, and the transparent film is close to the bottom of the transparent soil model box 1 and is positioned at a gap between the transparent soil model box 1 and the tunnel floating simulation device 3. And then the transparent soil model box 1, the shield tunneling machine simulation device 2 and the tunnel floating simulation device 3 are disassembled for cleaning again, and dry towels are used for wiping. And then, connecting the tunnel floating simulation device 3 with the transparent soil model box 1, inserting the shield tunneling machine simulation device 2 into the transparent soil model box 1 through the sealing ring 301, connecting the shield tunneling machine front shield rotation simulation device 4 with the shield tunneling machine forward driving simulation device 5, and adjusting the height of the shield tunneling machine front shield rotation simulation device 4 to connect the shield tunneling machine front shield rotation simulation device 4 with the horizontal driving rod 2032. Transparent soil is prepared in the transparent soil model box 1 to the designed height. And standing for 24 hours. In addition, a transparent film needs to be laid on the inner side of the side plate a of the transparent soil model box 1, and the transparent film is close to the bottom of the transparent soil model box 1 and is positioned at the gap between the transparent soil model box 1 and the tunnel floating simulation device 3. The industrial camera 7 and the laser transmitter 8 are arranged. And after the transparent soil is completely stood, opening the laser emitter 8, forming a transparent soil speckle field in the transparent soil, and adjusting the two industrial cameras 7. According to the test requirements, the front shield rotation simulation device 4 of the shield machine drives the cutter disc simulation device 202 and the cutter disc driving simulation device 203 to rotate at a constant speed, the forward driving simulation device 5 of the shield machine drives the shield machine simulation device 2 to move forward at a constant speed, and the transparent soil dug out from the shield machine simulation device 2 is cleaned through the soil sampler. After excavation is finished, separating the shield machine front shield rotation simulation device 4, the shield machine forward driving simulation device 5 and the shield machine simulation device 2, and standing the shield machine simulation device 2 until the shield machine simulation device 2 is stable and does not move any more, wherein the industrial camera 7 continuously records the change of the transparent soil speckle field in the process. In the standing process, the tunnel floating simulation device 3 moves in the vertical direction under the action of the shield tunneling simulation device 2, so that the standing process of the shield tunneling simulation device 2 is prevented from being interfered. And storing the image and the data, closing the laser emitter 8 and arranging the test equipment. And processing the test image by using a PIV technology to obtain a vector diagram of a transparent soil displacement field in the transparent soil model box 1. Specifically, the image is processed and data analyzed by using the PIV, so that motion information of surrounding particles in the shield tunnel excavation process, namely the change rule of a surrounding soil displacement field, is obtained, and based on the basic principle of the PIV technology, the embodiment applies trace particles with extremely small scale to approximately mark mass points in the soil field. In the test process, under the irradiation of laser, a high-speed camera is used for shooting the position change of the tracer particles in the test process. And after image acquisition, carrying out binarization processing on the image to obtain a vector diagram of a transparent soil displacement field in the transparent soil model box 1. And analyzing and sorting the obtained data and vector diagram to obtain the change rule of the displacement field of the surrounding soil body caused by the shield tunneling machine. The variables can be the buried depth of the shield machine, the physical geometric parameters of the shield machine, the excavation speed and the like, and the obtained data and vector diagrams are the data of the shield machine with the displacement changing along with the variables and the vector diagrams of the displacement fields of the soil around the shield machine under different variables.
It is worth explaining that the damage and instability of the excavation surface can be generated in the excavation process of the shield tunneling machine, the surrounding soil body is raised, settled and cracked, and the shield tunnel floats upwards; based on the test result, the influences of physical geometric parameters, burial depth, excavation speed and the like of different shield machines on the construction safety and stability can be analyzed, and reference is provided for shield machine design, construction and operation and maintenance.
The device can truly simulate the process of excavating the tunnel by the shield machine, can accurately monitor the change of the soil displacement field around the shield machine simulation device, and has low cost and wide application prospect.
Example 2:
referring to fig. 1, the embodiment discloses a transparent soil model test device for simulating displacement field changes of surrounding soil bodies caused by tunnel excavation of a shield machine, which comprises a transparent soil model box 1, a shield machine simulation device 2, a tunnel floating simulation device 3, a shield machine front shield rotation simulation device 4, a shield machine forward driving simulation device 5, a base 6, two industrial cameras 7 and a laser emitter 8.
Referring to fig. 10, the base 6 includes a support 602 and a transparent glass plate 601 mounted on the support 602, the support 602 is mounted on the ground, and the transparent soil model box 1 is placed on the transparent glass plate 601.
The transparent soil model box 1 is a rectangular box body with an open upper end, one side plate of the transparent soil model box 1 is marked as a side plate A, and the inner wall of the side plate A is flush with one side edge of the transparent glass plate 601.
Referring to fig. 2, a vertical rectangular groove 101 is formed in a side plate a of the transparent soil model box 1, and the rectangular groove 101 penetrates through the inner and outer walls, the upper and lower edges of the side plate a.
Two vertical edges of the rectangular groove 101 are provided with sliding grooves I102, and the sliding grooves I102 penetrate through the upper edge and the lower edge of the side plate A.
Referring to fig. 7, the tunnel upward floating simulation device 3 is a vertically arranged rectangular plate, a circular through hole is formed in the tunnel upward floating simulation device 3, and a sealing ring 301 is installed in the circular through hole of the tunnel upward floating simulation device 3.
All be provided with bar slider I302 on two vertical edges of tunnel come-up analogue means 3, the upper and lower end of bar slider I302 flushes with tunnel come-up analogue means 3's upper and lower end respectively, and I302 and the I102 phase-match of spout of bar slider.
Two strip-shaped sliding blocks I302 on the tunnel floating simulation device 3 are respectively installed with two sliding grooves I102 on the vertical edge of the rectangular groove 101 in a matched mode, and the upper end and the lower end of the tunnel floating simulation device 3 respectively extend out of the upper edge and the lower edge of the side plate A.
Referring to fig. 3, the shield simulation apparatus 2 includes a shield body simulation model 201, a cutter head simulation apparatus 202, and a cutter head drive simulation apparatus 203.
Referring to fig. 4, the shield simulation model 201 includes a shield model 2011 and two protrusions 2012, the shield model 2011 is a hollow cylinder structure with two open ends, the two ends of the shield model 2011 are respectively recorded as a front end and a rear end, the two protrusions 2012 are fixed on the inner wall of the shield model 2011 and are close to the front end of the shield model 2011, and a connecting line of the two protrusions 2012 passes through the axis of the shield model 2011.
Referring to fig. 6, the cutter head driving simulation apparatus 203 includes a connection disc 2031, a driving rod 2032, a driving disc 2033, and a pushing rod 2034, two ends of the pushing rod 2034 are respectively fixed on the two bumps 2012, a through hole for the driving rod 2032 to pass through is formed at a midpoint of the pushing rod 2034, and a through hole for the driving rod 2032 to pass through is formed at a center of the connection disc 2031.
The connecting disc 2031 is connected to one side of the driving disc 2033, the connecting disc 2031 and the driving disc 2033 are coaxial, the diameter of the driving disc 2033 is the same as the inner diameter of the shield body model 2011, the diameter of the connecting disc 2031 is smaller than the inner diameter of the shield body model 2011, the connecting disc 2031 and the driving disc 2033 are installed in the shield body model 2011, and the side of the driving disc 2033, which faces away from the connecting disc 2031, is flush with the front end face of the shield body model 2011.
The cutterhead simulator 202 is mounted on the side of the drive disc 2033 facing away from the coupling disc 2031.
The driving rod 2032 is provided with a limiting protrusion 20321, one end of the driving rod 2032 extends into the shield model 2011 from the rear end and passes through the pushing rod 2034 and the connecting disc 2031, the limiting protrusion 20321 is abutted against the pushing rod 2034, and one end of the driving rod 2032 extending out of the connecting disc 2031 is connected with the driving disc 2033.
The front end of the shield model 2011 penetrates through the sealing ring 301 and is embedded in the transparent soil model box 1, and the rear end is positioned outside the transparent soil model box 1.
Referring to fig. 9, the shield tunneling machine forward driving simulation device 5 comprises a sliding plate 501, a connecting device 502, a steel wire 503, two engine cases i 504, a rolling device 505 and a rectangular steel rod 506.
The sliding plate 501 is installed on the ground, the connecting device 502 is connected to the sliding plate 501 in a sliding mode, the connecting device 502 is connected with the rolling device 505 through the steel wire 503, the rolling device 505 is connected with the engines in the two engine cases I504, the engines drive the rolling device 505 and drive the connecting device 502 to slide through the steel wire 503, the sliding direction of the connecting device 502 is perpendicular to the side plate A of the transparent soil model case 1, and the lower end of the vertical rectangular steel rod 506 is fixed to the connecting device 502.
Referring to fig. 8, the front shield rotation simulation device 4 of the shield tunneling machine comprises an engine case ii 401, a rectangular through hole 4011 and a height adjusting bolt 4012 are arranged on the engine case ii 401, the rectangular through hole 4011 is matched with the cross-sectional dimension of a rectangular steel rod 506, the engine case ii 401 is mounted on the rectangular steel rod 506 through the rectangular through hole 4011, and the end of a driving rod 2032 extends into the engine case ii 401 and is connected with an engine output shaft inside the engine case ii 401.
The two industrial cameras 7 are all installed on the ground and are respectively located on two adjacent sides of the transparent soil model box 1, and one industrial camera 7 is located on the opposite side of the shield tunneling machine forward driving simulation device 5.
The laser transmitter 8 is installed below the transparent glass plate 601 and opposite to the transparent earth model box 1.
During testing, the laser transmitter 8 is turned on, the two industrial cameras 7 are adjusted, the cutter head simulation device 202 and the cutter head driving simulation device 203 are enabled to rotate at a constant speed through the shield machine front shield rotation simulation device 4, the shield machine simulation device 2 is enabled to advance at a constant speed through the shield machine advancing driving simulation device 5, and transparent soil excavated in the shield machine simulation device 2 is cleaned through the soil sampler. After the excavation is finished, separating the shield machine front shield rotation simulation device 4, the shield machine forward driving simulation device 5 and the shield machine simulation device 2, standing the shield machine simulation device 2 until the shield machine simulation device 2 does not move any more, and continuously recording the change of the transparent soil speckle field by the industrial camera 7.
Example 3:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 5, the cutter head simulator 202 is a disk structure connected by a plurality of blades 2021, and the blades 2021 are made of stainless steel.
Example 4:
the main structure of this embodiment is the same as that of embodiment 2, further, a cross groove 20331 is formed on the driving disc 2033, and the driving rod 2032 is connected to the driving disc 2033 through the cross groove 20331.
Example 5:
the main structure of this embodiment is the same as that of embodiment 2, and further, two mutually spaced slide rails 5011 are disposed on the slide plate 501, and the slide rails 5011 are perpendicular to the side plate a of the transparent soil mold box 1.
The connecting device 502 is provided with two grooves 50211 matched with the sliding rails 5011, and the connecting device 502 is connected to the sliding rails 5011 of the sliding plate 501 through the grooves 50211 in a sliding manner.
Example 6:
the main structure of this embodiment is the same as that of embodiment 2, further, a transparent film is arranged on the inner side of the side plate a of the transparent soil model box 1, the transparent film is close to the bottom of the transparent soil model box 1 and is located at the gap between the transparent soil model box 1 and the tunnel upward floating simulation device 3, the interface between the transparent soil model box 1 and the tunnel upward floating simulation device 3 is coated with silicone grease, and the interface between the transparent film and the tunnel upward floating simulation device 3 is coated with silicone grease.
Example 7:
the main structure of this embodiment is the same as that of embodiment 2, and further, the transparent soil model box 1, the shield simulation model 201, the tunnel upward floating simulation device 3 and the transparent glass plate 601 are all made of organic glass.
Claims (7)
1. The utility model provides a simulation shield constructs machine tunnel excavation and arouses transparent soil model test device of soil body displacement field change on every side which characterized in that: the device comprises a transparent soil model box (1), a shield machine simulation device (2), a tunnel floating simulation device (3), a shield machine front shield rotation simulation device (4), a shield machine forward driving simulation device (5), a base (6), two industrial cameras (7) and a laser transmitter (8);
the base (6) comprises a bracket (602) and a transparent glass plate (601) arranged on the bracket (602), the bracket (602) is arranged on the ground, and the transparent soil model box (1) is placed on the transparent glass plate (601);
the transparent soil model box (1) is a rectangular box body with an open upper end, one side plate of the transparent soil model box (1) is marked as a side plate A, and the inner wall of the side plate A is flush with one side edge of the transparent glass plate (601);
a vertical rectangular groove (101) is formed in a side plate A of the transparent soil model box (1), and the rectangular groove (101) penetrates through the inner wall, the outer wall, the upper edge and the lower edge of the side plate A;
two vertical edges of the rectangular groove (101) are provided with sliding grooves I (102), and the sliding grooves I (102) penetrate through the upper edge and the lower edge of the side plate A;
the tunnel floating simulation device (3) is a vertically arranged rectangular plate, a circular through hole is formed in the tunnel floating simulation device (3), and the sealing ring (301) is installed in the circular through hole of the tunnel floating simulation device (3);
the two vertical edges of the tunnel floating simulation device (3) are respectively provided with a strip-shaped sliding block I (302), the upper end and the lower end of the strip-shaped sliding block I (302) are respectively flush with the upper end and the lower end of the tunnel floating simulation device (3), and the strip-shaped sliding block I (302) is matched with the sliding chute I (102);
two strip-shaped sliding blocks I (302) on the tunnel floating simulation device (3) are respectively installed with two sliding grooves I (102) on the vertical edge of the rectangular groove (101) in a matched mode, and the upper end and the lower end of the tunnel floating simulation device (3) respectively extend out of the upper edge and the lower edge of the side plate A;
the shield tunneling machine simulation device (2) comprises a shield body simulation model (201), a cutter head simulation device (202) and a cutter head driving simulation device (203);
the shield body simulation model (201) comprises a shield body model (2011) and two lugs (2012), the shield body model (2011) is of a hollow cylinder structure with two open ends, the two ends of the shield body model (2011) are respectively marked as a front end and a rear end, the two lugs (2012) are fixed on the inner wall of the shield body model (2011) and are close to the front end of the shield body model (2011), and a connecting line of the two lugs (2012) penetrates through the axis of the shield body model (2011);
the cutter head driving simulation device (203) comprises a connecting disc (2031), a driving rod (2032), a driving disc (2033) and a pushing rod (2034), wherein two ends of the pushing rod (2034) are respectively fixed on the two bumps (2012), a through hole for the driving rod (2032) to pass through is formed in the middle point of the pushing rod (2034), and a through hole for the driving rod (2032) to pass through is formed in the center of the connecting disc (2031);
the connecting disc (2031) is connected to one side of the driving disc (2033) and is coaxial with the driving disc (2033), the diameter of the driving disc (2033) is consistent with the inner diameter of the shield body model (2011), the diameter of the connecting disc (2031) is smaller than the inner diameter of the shield body model (2011), the connecting disc (2031) and the driving disc (2033) are installed in the shield body model (2011), and one side of the driving disc (2033) back to the connecting disc (2031) is flush with the front end face of the shield body model (2011);
the cutter head simulation device (202) is arranged on one side, back to the connecting disc (2031), of the driving disc (2033);
a limiting protrusion (20321) is arranged on the driving rod (2032), one end of the driving rod (2032) extends into the shield model (2011) from the rear end and penetrates through the pushing rod (2034) and the connecting disc (2031), the limiting protrusion (20321) is abutted against the pushing rod (2034), and one end of the driving rod (2032) extending out of the connecting disc (2031) is connected with the driving disc (2033);
the front end of the shield body model (2011) penetrates through the sealing ring (301) and is embedded in transparent soil in the transparent soil model box (1), and the rear end of the shield body model (2011) is positioned outside the transparent soil model box (1);
the shield tunneling machine forward driving simulation device (5) comprises a sliding plate (501), a connecting device (502), a steel wire (503), two engine cases I (504), a rolling device (505) and a rectangular steel rod (506);
the sliding plate (501) is installed on the ground, the connecting device (502) is connected to the sliding plate (501) in a sliding mode, the connecting device (502) is connected with the rolling device (505) through the steel wire (503), the rolling device (505) is connected with engines in the two engine cases I (504), the engines drive the rolling device (505) and drive the connecting device (502) to slide through the steel wire (503), the sliding direction of the connecting device (502) is perpendicular to the side plate A of the transparent soil model box (1), and the lower end of the vertical rectangular steel rod (506) is fixed to the connecting device (502);
the front shield rotation simulation device (4) of the shield tunneling machine comprises an engine case II (401), a rectangular through hole (4011) and a height adjusting bolt (4012) are formed in the engine case II (401), the rectangular through hole (4011) is matched with the section size of a rectangular steel rod (506), the engine case II (401) is installed on the rectangular steel rod (506) through the rectangular through hole (4011), and the end part of a driving rod (2032) extends into the engine case II (401) and is connected with an engine output shaft inside the engine case II (401);
the two industrial cameras (7) are installed on the ground and are respectively positioned on two adjacent sides of the transparent soil model box (1), and one industrial camera (7) is positioned on the opposite side of the shield tunneling machine forward driving simulation device (5);
the laser emitter (8) is arranged below the transparent glass plate (601) and is opposite to the transparent soil model box (1).
2. The transparent soil model test device for simulating the change of the displacement field of the surrounding soil body caused by the tunnel excavation of the shield tunneling machine according to claim 1, characterized in that: the cutter head simulation device (202) is of a disc structure formed by connecting a plurality of blades (2021).
3. The transparent soil model test device for simulating the change of the displacement field of the surrounding soil body caused by the tunnel excavation of the shield tunneling machine according to claim 2, characterized in that: the blade (2021) is made of stainless steel.
4. The transparent soil model test device for simulating the change of the displacement field of the surrounding soil body caused by the tunnel excavation of the shield tunneling machine according to claim 1, characterized in that: a cross-shaped groove (20331) is formed in the drive disc (2033), and the drive rod (2032) is connected with the drive disc (2033) through the cross-shaped groove (20331).
5. The transparent soil model test device for simulating the change of the displacement field of the surrounding soil body caused by the tunnel excavation of the shield tunneling machine according to claim 1, characterized in that: the sliding plate (501) is provided with two mutually spaced sliding rails (5011), and the sliding rails (5011) are perpendicular to a side plate A of the transparent soil model box (1);
the connecting device (502) is provided with two grooves (50211) matched with the sliding rails (5011), and the connecting device (502) is connected to the sliding rails (5011) of the sliding plate (501) in a sliding mode through the grooves (50211).
6. The transparent soil model test device for simulating the change of the displacement field of the surrounding soil body caused by the tunnel excavation of the shield tunneling machine according to claim 1, characterized in that: the inner side of a side plate A of the transparent soil model box (1) is provided with a transparent film, the transparent film is close to the bottom of the transparent soil model box (1) and is positioned at a gap between the transparent soil model box (1) and the tunnel floating simulation device (3), the junction between the transparent soil model box (1) and the tunnel floating simulation device (3) is coated with silicone grease, and the junction between the transparent film and the tunnel floating simulation device (3) is coated with silicone grease.
7. The transparent soil model test device for simulating the change of the displacement field of the surrounding soil body caused by the tunnel excavation of the shield tunneling machine according to claim 1, characterized in that: the transparent soil model box (1), the shield body simulation model (201), the tunnel floating simulation device (3) and the transparent glass plate (601) are all made of organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221030481.7U CN218157893U (en) | 2022-04-29 | 2022-04-29 | Transparent soil model test device for simulating change of peripheral soil displacement field caused by tunnel excavation of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221030481.7U CN218157893U (en) | 2022-04-29 | 2022-04-29 | Transparent soil model test device for simulating change of peripheral soil displacement field caused by tunnel excavation of shield tunneling machine |
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| CN218157893U true CN218157893U (en) | 2022-12-27 |
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| CN202221030481.7U Active CN218157893U (en) | 2022-04-29 | 2022-04-29 | Transparent soil model test device for simulating change of peripheral soil displacement field caused by tunnel excavation of shield tunneling machine |
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| CN (1) | CN218157893U (en) |
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- 2022-04-29 CN CN202221030481.7U patent/CN218157893U/en active Active
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