CN110656949B - Profiling tunneling system and method for model test tunnel excavation of any shape - Google Patents

Profiling tunneling system and method for model test tunnel excavation of any shape Download PDF

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Publication number
CN110656949B
CN110656949B CN201910791075.9A CN201910791075A CN110656949B CN 110656949 B CN110656949 B CN 110656949B CN 201910791075 A CN201910791075 A CN 201910791075A CN 110656949 B CN110656949 B CN 110656949B
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cutter head
tunneling
profiling
tunnel
excavation
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CN110656949A (en
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王汉鹏
王伟
张庆松
侯伟涛
杨为民
章冲
薛阳
马正卫
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Shandong University
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Shandong University
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10Making by using boring or cutting machines
    • E21D9/1006Making by using boring or cutting machines with rotary cutting tools
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10Making by using boring or cutting machines
    • E21D9/1093Devices for supporting, advancing or orientating the machine or the tool-carrier
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10Making by using boring or cutting machines
    • E21D9/11Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12Devices for removing or hauling away excavated material or spoil; Working or loading platforms

Abstract

The invention discloses a profiling tunneling system and a profiling tunneling method for excavating tunnels in any shapes in model tests, which solve the problem that only circular tunnels can be excavated in the existing rock-soil similar model tests, and realize the beneficial effect of full-section mechanized excavation molding of tunnels in any shapes, and the scheme is as follows: a profile modeling tunnelling system for model test arbitrary shape tunnel excavation, including profile modeling tunnelling mechanism, rotatory advancing mechanism, support frame and row's sediment device. The profiling tunneling mechanism comprises a positioning tool bit, a front cutter head, a rear cutter head and a profiling frame, wherein the positioning tool bit, the front cutter head and the rear cutter head are coaxially rotated; any hole-shaped full-section mechanized excavation can be realized only by replacing the profiling frame according to the shape and the size of the tunnel.

Description

Profiling tunneling system and method for model test tunnel excavation of any shape
Technical Field
The invention relates to the field of underground engineering model tests such as highway tunnels, railway tunnels, mine tunnels and the like, in particular to a profiling tunneling system and a profiling tunneling method for model test of tunnel excavation in any shape.
Background
The physical simulation test is a test method for researching the stability problems of deformation, damage and the like of an underground tunnel and a factory building by adopting a reduced scale model on the basis of similar theory and similar materials. After the model is loaded, the construction processes of excavation, support and the like are simulated, data such as deformation, strain, stress and the like in the model are monitored in real time, the test result is used for guiding field construction, and four research methods of geotechnical engineering are formed together with indoor tests, numerical analysis and field monitoring.
According to a similar principle, the tunnel model in the geotechnical engineering similar physical model test is similar to the prototype tunnel in shape, but is generally only 1/10-1/200 of the prototype tunnel in size. Common shapes of geotechnical engineering tunnels include circular, straight-wall arch, three-center arch, rectangular and the like. The better the similarity of the test model is, the more similar the tunnel excavation and other construction processes are to the prototype engineering, the higher the reliability of the test result is, and the higher the reference of the engineering personnel is.
At present, the following four methods are generally adopted for tunnel excavation in a model test:
(1) when the model is manufactured, a column body with the same shape as the excavated hole is pre-buried at a designated position, the column body is pulled out after the model is dried to enable the tunnel to be formed at one time, and then the tunnel is loaded, namely, the method of prefabricating the tunnel and then loading the tunnel is not practical because the excavation construction of the tunnel on site is carried out in an original rock stress field.
(2) When a model is manufactured, a cylinder with the same shape as an excavated hole is pre-buried at a designated position, the cylinder can be composed of a plurality of small sections, the mechanical property (such as elastic modulus) is consistent with the model as much as possible, the model is loaded to initial stress after being dried, the pre-buried small section cylinders are sequentially taken out, and segmental excavation is simulated, namely, a tunnel is pre-buried firstly, and the excavation is simulated after being loaded, so that the situation that the tunnel deforms and shrinks under high pressure and the front cylinder is not easy to take out can be met.
(3) The method is characterized in that the manufactured model is loaded to initial stress after being dried, and a tunnel with a certain shape is manually excavated at a preset position, namely, the manual excavation method is adopted.
(4) And (3) loading the manufactured model to initial stress after drying, and mechanically excavating the tunnel with the specified shape at the preset position by using a drilling machine or small-sized excavating equipment, namely, the mechanical automatic excavating method, wherein the shape of the tunnel excavated by the method is regular.
At present, high-precision tunneling and excavation of a circular tunnel are realized in a physical simulation test. For example, the invention of Chinese patent CN201711463818.7 discloses a quantitative simulation test system and method for realizing the driving induction of coal and gas outburst in the stone door tunnel, which realizes the quantitative control of the circular tunnel driving and the outburst process capture in the coal and gas outburst model test; the invention relates to a round tunnel full-cutting tunneling experimental device which is invented by Chinese patent CN201620279733.8 and is suitable for full-section cutting excavation of a similar simulation test round tunnel; the invention discloses a simulation mining method of a matched three-dimensional physical model test robot system in Chinese patent CN201610278246.4, which can realize the simulation of the automatic excavation of a circular tunnel and the mining of a working face by a robot.
However, for non-circular tunnels commonly used in projects such as straight wall arches, three-center arches, rectangles and the like, one-time forming full-section mechanical automatic excavation is not realized in model tests.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a profiling excavation system and a profiling excavation method for model test tunnel excavation with any shape, and the profiling excavation system and the profiling excavation method have the characteristics of one-time full-face excavation, adaptation to different tunnel outline shapes, convenience in operation, compact structure and the like.
The specific scheme of the profiling tunneling system and method for model test tunnel excavation in any shape is as follows:
a profile modeling tunnelling system for model test arbitrary shape tunnel excavation includes:
the profiling tunneling mechanism is positioned at the front end of the rotary advancing mechanism and is provided with a positioning tool bit, a front cutter head, a rear cutter head and a profiling frame from front to back, wherein the positioning tool bit, the front cutter head and the rear cutter head coaxially rotate, and the profiling frame is fixed, so that the one-time full-section tunneling of the tunnel in any shape can be realized;
the rotary advancing mechanism is positioned at the rear part of the profiling tunneling mechanism and comprises a rotating shaft connected with the profiling tunneling mechanism, the other end of the rotating shaft is connected with a rotating motor, a hollow rod is arranged outside the rotating shaft, and the advancing motor drives the rotating shaft and the rotating motor to advance or retreat so as to provide power for the rotating and advancing processes of the profiling tunneling mechanism;
the support frame and the slag discharging device are a main body frame of the system, support the rotary advancing mechanism and the profiling tunneling mechanism, the height-adjustable support legs can be used for adjusting the height of the support frame, and the slag discharging device comprises a dust collector, and the dust collector and a slag discharging pipe are arranged on the support frame and can be used for tunneling and discharging slag.
The positioning tool bit is positioned at the foremost end of the profiling tunneling mechanism and is provided with a circular blade, and the positioning tool bit firstly drills into a model in the tunneling process to play a good positioning role, so that the phenomena of vibration and eccentricity in the tunneling process are prevented; the rear part of the positioning tool bit is connected with the front cutter head, the front cutter head is of a three-fork shape, a cutting edge faces to the tunnel face, and the lengths of all fork arms of the front cutter head are set according to the shape and the size of the tunnel to be excavated, so that the front cutter head can rotate to cut the tunnel to form the initial tunnel with the maximum inscribed circle shape of the tunnel to be excavated; the rear part of the front cutter head is connected with the rear cutter head, the rear cutter head realizes the scalability of a cutter head by arranging a spring, a cutting edge faces to the tunnel face, the rear cutter head is provided with a rotary slide block, the other end of the rotary slide block is movably connected with the profiling frame positioned at the rear part of the rear cutter head, and the profiling frame is consistent with the contour of the tunnel to be excavated; when the rear cutter head rotates, the rotating slide block moves along the profiling groove of the profiling frame to drive the rear cutter head to stretch, and the cutting profile of the rear cutter head is consistent with the profile to be excavated; in the tunneling process, the positioning tool bit, the front cutter head and the rear cutter head rotate coaxially, and the profiling frame is fixed, so that the one-time full-section tunneling of the tunnel in any shape is realized.
The positioning cutter head, the front cutter head and the rear cutter head are used for rotary cutting by taking a rotary shaft of the rotary advancing mechanism as a shaft; the hollow rod is wrapped outside the rotating shaft, and a forward mechanism is arranged on the hollow rod and matched with the forward motor to realize forward and backward processes; a rotary bearing is arranged between the hollow rod and the rotating shaft to play a role in reducing friction; the rear end of the rotating shaft is connected with the rotating motor, and the rotating motor provides power for the rotating process; the advancing motor is arranged on one side of the hollow rod and provides power for the advancing and retreating processes of excavation; the cavity pole periphery sets up many the bracing piece, the bracing piece both ends respectively with the rotating electrical machines with the profile modeling frame is connected, right the profile modeling frame plays the fixed action.
The support frame is used as a frame of the whole set of excavation system and plays a role in supporting various devices; the height-adjustable supporting leg realizes the height adjusting function of the excavation system through a threaded structure; the utility model discloses a road excavation, including the cavity pole, dust catcher, deslagging pipe, hollow pipe, the cavity pole is connected, the other end with the dust catcher is connected, through the waste rock that the negative pressure messenger of dust catcher was tunneled and is produced along the hollow tube reaches deslagging pipe gets into the dust catcher, deslagging pipe is the hose, and adaptable whole excavation process of advancing.
The test method of the profiling tunneling system for model test of tunnel excavation in any shape comprises the following steps:
arranging a profiling tunneling system for testing the excavation of tunnels with any shapes in a model test in front of a model to be excavated;
adjusting the profiling tunneling mechanism to a corresponding height through the height-adjustable support legs;
replacing the profiling frame consistent with the contour of the tunnel to be excavated;
the positioning tool bit, the front cutter head and the rear cutter head are driven to rotate by the rotating motor, and the profiling tunneling mechanism and the rotating motor are driven by the advancing motor, so that the tunneling process is advanced while the tunnel is rotationally tunneled until the tunnel is tunneled to a specified position until the construction of the tunnel is completed, and the tunnel with any shape is tunneled at one time in a full section;
in the tunneling process, the generated gangue is discharged through the dust collector and the slag discharge pipe, and the tunneling smoothness is guaranteed.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, by arranging the tunnel profile frames, the excavation of tunnels with any shapes can be realized only by replacing the tunnel profile frames with different shapes, the application range is wide, the excavation accuracy is high, and the method is more consistent with the actual excavation process.
2) According to the invention, the positioning tool bit, the front cutter head and the rear cutter head are arranged, so that the tunnel excavation positioning, the tunnel maximum inscribed circle region excavation and the tunnel profile excavation can be realized, and the excavation process is more stable and reasonable.
3) Compared with manual or miniature equipment, the excavating machine has the advantages of higher excavating efficiency, adjustable height and stronger adaptability through the arrangement of the integral structure, and can timely clean waste rocks in the excavating process.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is an overall three-dimensional view of an excavation system according to an embodiment of the present invention;
figure 2 is a three dimensional view of a profiling tunneling mechanism in an embodiment of the present invention;
FIG. 3 is a schematic diagram of the extension and retraction of a rear cutter head in an embodiment of the invention;
fig. 4 is a schematic diagram of profiling tunneling in the embodiment of the invention.
Wherein: 1. the device comprises a profiling tunneling mechanism, 1-1 parts of a positioning cutter head, 1-2 parts of a front cutter head, 1-3 parts of a rear cutter head, 1-4 parts of a profiling frame, 2 parts of a rotary advancing mechanism, 2-1 parts of a hollow rod, 2-2 parts of a rotary shaft, 2-3 parts of a rotary motor, 2-4 parts of an advancing motor, 2-5 parts of a support rod, 3 parts of a support frame, a slag discharging device, 3-1 parts of a support frame, 3-2 parts of a height-adjustable support leg, 3-3 parts of a dust collector, 3-4 parts of a slag discharging pipe.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background of the invention, the shortcomings of the prior art are overcome, and in order to solve the technical problems, the invention provides a profiling tunneling system and a method for model test of tunnel excavation with any shape.
The embodiment of the invention, which is a straight-wall arched tunnel commonly existing in excavation engineering, is taken as an example for introduction.
As shown in fig. 1-4, the profiling tunneling system for model test tunnel excavation of any shape comprises a profiling tunneling mechanism 1, a rotary advancing mechanism 2, a support frame and a slag discharging device 3. Wherein the profiling tunneling mechanism 1 is positioned at the front tunneling end of the tunneling system and is used for realizing profiling tunneling; the rotary advancing mechanism 2 is positioned at the rear part of the profiling tunneling mechanism 1 and at the upper part of the support frame and slag discharging device 3 and is used for controlling the rotation, the advance and the retreat of the profiling tunneling mechanism 1; the support frame and the slag discharging device 3 are a main body frame of the tunneling system and are used for providing support for the profiling tunneling mechanism 1 and the rotary advancing mechanism 2 and realizing slag stone pumping and discharging in the tunneling process.
The profiling tunneling mechanism 1 sequentially comprises a positioning tool bit 1-1, a front cutter head 1-2, a rear cutter head 1-3 and a profiling frame 1-4 from the foremost end of tunneling to the back. The main body of the positioning tool bit 1-1 is a cylindrical structure protruding from the rotating axis of the front cutter head 1-2, a hard alloy blade of a circular numerical control lathe is arranged at the foremost end of the cylindrical structure, and the positioning tool bit 1-1 firstly drills into a model in the tunneling process to play a good positioning role and prevent the phenomena of vibration and eccentricity in the tunneling process. The front cutter head 1-2 is positioned at the rear part of the positioning cutter head 1-1 and is of a three-fork structure, and the length of each fork arm is the radius of the maximum inscribed circle of the outline of the tunnel to be excavated; triangular diamond non-metal cutting blades and square superhard alloy blades are installed on each fork arm in a staggered mode, the triangular diamond non-metal cutting blades are arranged with the cutter head as the center and in different radiuses, six grooves are cut by the sharp triangular blades, then the square blades are scraped, and the tunneling efficiency is greatly improved; the cutting edge of the blade faces the tunnel face, and the initial tunnel with the largest inscribed circle shape of the tunnel to be excavated is formed by rotary cutting of the front cutter head 1-2. The rear cutter head 1-3 and the profiling frame 1-4 are matched with each other to realize the profile trimming of the straight-wall arch tunnel; the cutter head of the rear cutter head 1-3 is arranged in the shell, and the bottom end of the cutter head in the shell is provided with a spring, so that the cutter head is telescopic; a tool bit of the rear cutter head 1-3 is provided with a rotary slide block, and the other end of the rotary slide block is arranged in a profiling groove of the profiling frame 1-4; the shape and the size of the profile modeling frame 1-4 are consistent with those of a straight-wall arched tunnel to be excavated, and the shape of a profile modeling groove arranged on the profile modeling frame 1-4 is consistent with that of the profile modeling frame 1-4; in the rotating process of the rear cutter head 1-3, the cutter head is driven by the rotating slide block to continuously stretch and retract along the contour of the contour groove to adjust the length, and the spring enables the cutter head to stretch and retract more smoothly and prevents blockage. The positioning tool bit 1-1, the front cutter head 1-2 and the rear cutter head 1-3 coaxially rotate in the tunneling process, the excavation of the straight-wall arched tunnel is jointly realized, and the profiling frame 1-4 is fixed in the tunneling process. When tunnels with different profiles need to be excavated, only the corresponding profiling frames need to be replaced.
The rotary advancing mechanism 2 comprises a hollow rod 2-1, a rotating shaft 2-2, a rotating motor 2-3, an advancing motor 2-4 and a supporting rod 2-5. Wherein one end of the rotating shaft 2-2 is connected with the profiling tunneling mechanism 1, and the profiling tunneling mechanism 1 performs rotary cutting by taking the rotating shaft 2-2 as an axis. The other end of the rotating shaft 2-2 is connected with a rotating motor 2-3, and the rotating motor 2-provides power for the rotating cutting process. The rotating shaft 2-2 penetrates through the hollow rod 2-1, and the hollow rod 2-1 is provided with a forward mechanism which is matched with a forward motor 2-4 to realize forward and backward processes. A rotary bearing is arranged between the hollow rod 2-1 and the rotating shaft 2-2 to play a role in antifriction support. A forward motor 2-4 arranged on the side of the rotating shaft 2-2 and a forward mechanism, wherein the forward motor 2-4 provides power for the forward process of excavation. The periphery of the hollow rod 2-1 is provided with a plurality of support rods 2-5, and the two ends of the support rods 2-5 are respectively connected with the rotating motor 2-3 and the profiling frame 1-4 to fix the profiling frame 1-4.
The supporting frame and slag discharging device 3 comprises a supporting frame 3-1, a height-adjustable supporting leg 3-2, a dust collector 3-3 and a slag discharging pipe 3-4. The support frame 3-1 is used as a main body frame of the whole set of excavation system and plays a role in supporting various devices; the height-adjustable supporting leg 3-2 realizes the height adjusting function of the excavation system through a thread structure; one end of a slag discharge pipe 3-4 is connected with the hollow rod 2-1, the other end is connected with a dust collector 3-3, gangue generated by tunneling enters the dust collector 3-3 along the hollow pipe 2-1 and the slag discharge pipe 3-4 through negative pressure, and the slag discharge pipe 3-4 is a hose.
By the system, one-time forming full-section mechanical excavation of tunnels in any shapes in a rock-soil model test can be realized; the whole height of the system is adjustable and the position of the system is movable, so that the requirements of tunnel excavation at different positions are met; meanwhile, the crushed aggregates during tunneling are convenient to clean and can be sucked out through a dust collector and a gangue suction pipe; the multifunctional electric water heater has the characteristics of strong adaptability, convenience in operation, compact structure, multiple functions and the like.
The invention also provides a test method of the profiling tunneling system for model test of tunnel excavation in any shape, which comprises the following steps:
arranging a profiling tunneling system for testing the excavation of tunnels with any shapes in a model test in front of a model to be excavated;
the height of the profiling tunneling mechanism 1 is adjusted through the height-adjustable supporting legs 3-2, so that the positioning tool bit 1-1 is positioned at the center of the maximum inscribed circle of the contour of the tunnel to be excavated;
replacing the profiling frames 1-4 consistent with the contour of the tunnel to be excavated;
the positioning tool bit 1-1, the front cutter head 1-2 and the rear cutter head 1-3 are driven to rotate by the rotary motor 2-3, and the profiling tunneling mechanism 1 and the rotary motor 2-3 are driven to advance by the advancing motor 2-4, so that the tunneling process is advanced while the tunnel is rotationally tunneled until the tunnel is tunneled to a specified position until the construction of the tunnel is completed, and the tunnel with any shape is once tunneled in a full section;
in the tunneling process, the generated waste rocks are discharged through the dust collector 3-3 and the slag discharge pipe 3-4, so that the tunneling is ensured to be smooth.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A profile modeling tunnelling system for model test arbitrary shape tunnel excavation includes:
the profiling tunneling mechanism is positioned at the front end of the rotary advancing mechanism and is provided with a positioning tool bit, a front cutter head, a rear cutter head and a profiling frame from front to back, wherein the positioning tool bit, the front cutter head and the rear cutter head coaxially rotate, and the profiling frame is fixed, so that the one-time full-section tunneling of the tunnel in any shape can be realized;
the rotary advancing mechanism is positioned at the rear part of the profiling tunneling mechanism and comprises a rotating shaft connected with the profiling tunneling mechanism, the other end of the rotating shaft is connected with a rotating motor, a hollow rod is arranged outside the rotating shaft, and the advancing motor drives the rotating shaft and the rotating motor to advance or retreat so as to provide power for the rotating and advancing processes of the profiling tunneling mechanism;
the support frame and the slag discharging device are a main body frame of the system, support the rotary advancing mechanism and the profiling tunneling mechanism, the height-adjustable support legs can be used for adjusting the height of the support frame, and the dust collector and the slag discharging pipe are arranged on the support frame and can be used for tunneling and discharging slag;
the method is characterized in that: the positioning cutter head, the front cutter head and the rear cutter head all use a rotating shaft of the rotating advancing mechanism as a shaft to carry out rotating cutting; the hollow rod is wrapped outside the rotating shaft, and a rotary advancing mechanism is arranged on the hollow rod and matched with the advancing motor to realize advancing and retreating processes; a rotary bearing is arranged between the hollow rod and the rotating shaft to play a role in reducing friction; the rear end of the rotating shaft is connected with the rotating motor, and the rotating motor provides power for the rotating process; the advancing motor is arranged on one side of the hollow rod and provides power for the advancing and retreating processes of excavation; the cavity pole periphery sets up many spinal branchs vaulting pole, the bracing piece both ends respectively with the rotating electrical machines with the profile modeling frame is connected, right the profile modeling frame plays the fixed action.
2. The profiling tunneling system for model test of tunnel excavation of any shape according to claim 1, wherein the positioning tool bit is positioned at the foremost end of the profiling tunneling mechanism and is provided with a circular blade, and the positioning tool bit firstly drills into a model to play a good positioning role in the tunneling process; the rear part of the positioning tool bit is connected with the front cutter head, the front cutter head is of a three-fork shape, a cutting edge faces to the tunnel face, and the lengths of all fork arms of the front cutter head are set according to the shape and the size of the tunnel to be excavated, so that the front cutter head can rotate to cut the tunnel to form the initial tunnel with the maximum inscribed circle shape of the tunnel to be excavated; the rear part of the front cutter head is connected with the rear cutter head, the rear cutter head realizes the scalability of a cutter head by arranging a spring, a cutting edge faces to the tunnel face, the rear cutter head is provided with a rotary slide block, the other end of the rotary slide block is movably connected with the profiling frame positioned at the rear part of the rear cutter head, and the profiling frame is consistent with the contour of the tunnel to be excavated; when the rear cutter head rotates, the rotating slide block moves along the profiling groove of the profiling frame to drive the rear cutter head to stretch, and the cutting profile of the rear cutter head is consistent with the profile to be excavated; in the tunneling process, the positioning tool bit, the front cutter head and the rear cutter head rotate coaxially, and the profiling frame is fixed, so that the one-time full-section tunneling of the tunnel in any shape is realized.
3. The profiling tunneling system for model testing tunnel excavation of any shape according to claim 1, wherein the support frame is used as a framework of the whole tunneling system and supports various devices; the height-adjustable supporting legs realize the height adjusting function of the tunneling system through a threaded structure; arrange slag pipe one end with the cavity pole is connected, the other end with the dust catcher is connected, through the waste rock that the negative pressure messenger of dust catcher tunnelled and produced along the cavity pole reaches arrange the slag pipe and get into the dust catcher, arrange the slag pipe and be the hose, adaptable whole excavation process of advancing.
4. A method of testing a profiling excavation system for model testing an arbitrary shaped tunnel excavation according to any of claims 1 to 3, comprising:
arranging a profiling tunneling system for testing the excavation of tunnels with any shapes in a model test in front of a model to be excavated;
adjusting the profiling tunneling mechanism to a corresponding height through the height-adjustable support legs;
replacing the profiling frame consistent with the contour of the tunnel to be excavated;
the positioning tool bit, the front cutter head and the rear cutter head are driven to rotate by the rotating motor, and the profiling tunneling mechanism and the rotating motor are driven by the advancing motor, so that the tunneling process is advanced while the tunnel is rotationally tunneled until the tunnel is tunneled to a specified position until the construction of the tunnel is completed, and the tunnel with any shape is tunneled at one time in a full section;
in the tunneling process, the generated gangue is discharged through the dust collector and the slag discharge pipe, and the tunneling smoothness is guaranteed.
CN201910791075.9A 2019-08-26 2019-08-26 Profiling tunneling system and method for model test tunnel excavation of any shape Active CN110656949B (en)

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