Tunnel portal breaking construction equipment and construction method thereof

Abstract

The application relates to the technical field of tunnels, in particular to tunnel portal breaking construction equipment and a construction method thereof, which comprises a storage device and a nozzle device. The storage device is provided with a containing groove, a water bomb is arranged in the containing groove, and a first pipeline is arranged at one end of the containing groove. The nozzle device is provided with a channel, the channel is connected with the storage device through the first pipeline, and the water bomb is sprayed to a required blasting area through the nozzle device. The channel comprises an extrusion section, the diameter of the extrusion section is smaller than that of the water bomb, and the water bomb is broken into water bomb fragments through the extrusion section. The water bomb type water jet construction equipment is used to groove cut the required blasting area, so that the grid arch frame and anchor rod of the blasting part are separated from other parts, and the influence on the overall structure stability during blasting is effectively solved.

Description

Technical Field

[0001] This application relates to the technical field of tunnels, and more specifically, to a tunnel portal breaching construction equipment and construction method thereof. Background Technology

[0002] With the advancement of urbanization in my country, a large influx of people has entered cities, leading to the rapid development of rail transit construction in many economically developed central cities. Subway stations are evolving towards larger spans, longer tunnels, and multi-level structures, making their structural importance self-evident. A subway station often has multiple tunnel junctions. Current construction technology requires building a main tunnel and then using the traditional drill-and-blast method to excavate other tunnels from the side. Subways and highway tunnels, as projects designed for long-term construction, often require numerous lattice arches and other structural elements to form a robust overall structure. Therefore, forcibly excavating other tunnels from the side of an existing main tunnel using the drill-and-blast method not only significantly disturbs the overall structure, affecting its safety and stability, but also results in incomplete removal of the lattice arches. This necessitates manual cleaning of the tunnel edges using methods such as welding and cutting before proceeding to the next stage of construction, greatly extending the construction time and potentially causing missed opportunities for optimal construction. Summary of the Invention

[0003] One of the technical problems this application aims to solve is to overcome the technical problem in the prior art that when using the traditional drill-and-blast method to excavate other tunnels on the side of an existing main tunnel, the integrity of the grid arch structure will affect the overall structural stability of the tunnel. This application provides a tunnel portal demolition equipment and its construction method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A tunnel portal breaching construction equipment, comprising:

[0006] A storage device, wherein the storage device is provided with a receiving tank, a water bomb is provided in the receiving tank, and a first pipe is provided at one end of the receiving tank;

[0007] The nozzle device has a channel inside, which is connected to the storage device through the first pipe. The water bullet is sprayed through the nozzle device to the area to be blasted.

[0008] The channel includes a compression section, the diameter of which is smaller than the diameter of the water bullet, and the water bullet is broken into fragments by the compression section.

[0009] Furthermore, the extrusion section is designed as a conical structure, and the inner diameter of the extrusion section gradually decreases from the first end to the second end of the extrusion section;

[0010] The first end of the extrusion section is positioned close to the first pipe.

[0011] Furthermore, the channel also includes a first channel segment, which is located at the first end of the extrusion section. One end of the first channel segment is connected to the first pipe, and the other end of the first channel segment is connected to the extrusion section.

[0012] The diameter of the first channel segment is larger than the diameter of the water bomb.

[0013] Furthermore, the channel also includes a second channel segment, which is located at the second end of the extrusion section and is connected to the extrusion section;

[0014] The diameter of the second channel segment is smaller than the diameter of the water bullet but larger than the diameter of the fragmented water bullet.

[0015] Furthermore, the first pipe is equipped with a pressurization assembly, through which the water jet is sprayed into the channel of the nozzle device.

[0016] Furthermore, the pressurization assembly includes a first driving member and a gear. The first driving member is connected to the gear, and a turbine is rotatably connected to one end of the gear away from the first driving member. The gear drives the turbine to rotate through the first driving member.

[0017] Furthermore, the receiving groove includes a first opening and a second opening, the first opening being adapted to be equipped with a movable component, the movable component being slidably connected to the inner wall of the receiving groove, and the second opening being connected to the first pipe.

[0018] Further, the moving component includes:

[0019] A second driving member is located within the receiving groove;

[0020] A movable component is located at the first opening, the movable component is connected to the second driving component, and the movable component and the second driving component are slidably connected to the inner wall of the receiving groove.

[0021] Furthermore, the tunnel portal demolition equipment also includes a water storage device, one end of which is provided with a second pipe, which is connected to the passage.

[0022] The second pipeline is equipped with a water pump.

[0023] Furthermore, a guide rail is installed on the inner wall of the receiving groove, and the guide rail extends toward the direction close to the second opening.

[0024] This invention also claims a method for tunnel portal demolition, which employs the aforementioned tunnel portal demolition equipment.

[0025] Furthermore, it includes the following steps:

[0026] Indoor test: Make a lining cutting test model, use the tunnel portal demolition equipment to cut the lining, cut through the lining, and obtain the cutting time.

[0027] Develop a construction plan: Multiply the cutting time of the lining obtained from the experiment by a factor to obtain the construction cutting time. Select construction machinery to cut out the required outline, and then carry out grooving construction on the lining to be removed on site.

[0028] The technical solution of this invention has the following advantages:

[0029] This invention utilizes a water-jet spraying device to cut grooves in the area to be blasted, separating the grid arch frame from the anchor bolts and other components at the blasting location. This effectively mitigates the impact on the overall structural stability during blasting. It solves the technical problem in existing technologies where the integrity of the grid arch frame structure affects the overall structural stability of the tunnel when using traditional drill-and-blast methods to excavate other tunnels alongside an existing main tunnel. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the tunnel portal breaching equipment in an embodiment of this application is shown;

[0033] Figure 2 A schematic diagram of the nozzle device in an embodiment of this application is shown;

[0034] Figure 3 This invention provides a schematic diagram illustrating the connection between the nozzle device and the pressurization assembly in an embodiment of this application.

[0035] Figure 4 A schematic diagram of the structure of the breached door in an embodiment of this application is shown;

[0036] Figure 5This application shows a schematic diagram of the structure for clearing under-excavated surrounding rock in an embodiment of the present application;

[0037] The reference numerals in the attached drawings are explained as follows: 10, storage device; 11, receiving tank; 111, first opening; 112, second opening; 113, guide rail; 12, first pipe; 13, water bomb valve; 20, nozzle device; 21, channel; 22, extrusion section; 221, first end of extrusion section; 222, second end of extrusion section; 23, first channel section; 24, second channel section; 30, pressurization component; 31, first driving component; 32, gear; 33, turbine; 40, water bomb; 41, fragmented water bomb; 50, moving component; 51, second driving component; 52, moving component; 60, water storage device; 61, second pipe; 62, water pump; 70, part to be broken; 71, blasting hole; 72, cutting groove; 73, lining; 74, under-excavated surrounding rock; 75, first cutting seam; 76, second cutting seam. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] like Figure 1 As shown, this embodiment of the invention provides a tunnel portal breaching construction equipment, including a storage device 10 and a nozzle device 20; the storage device 10 is provided with a receiving groove 11, and a water bullet 40 is provided in the receiving groove 11, and a first pipe 12 is provided at one end of the receiving groove 11; the nozzle device 20 is provided with a channel 21, and the channel 21 is connected to the storage device 10 through the first pipe 12, and the water bullet 40 is sprayed to the area to be blasted through the nozzle device 20; wherein, the channel 21 includes a compression section 22, the diameter of the compression section 22 is smaller than the diameter of the water bullet 40, and the water bullet 40 is broken into fragments of water bullet 41 by the compression section 22.

[0040] In this embodiment, the receiving tank 11 is used to hold multiple water bombs 40 and a small amount of liquid. The water bombs 40 of the storage device 10 are moved from the first pipe 12 to the channel 21 installed in the nozzle device 20. When passing through the extrusion section 22 of the first pipe 12, since the diameter of the extrusion section 22 is smaller than the diameter of the water bomb 40, the water bomb 40 is subjected to the force of the extrusion section 22. Due to the pressure, the complete water bomb 40 is squeezed and broken into smaller sand-containing water-absorbing resin fragments. Finally, the water bomb 40 is sprayed to the area of ​​the tunnel that needs to be blasted.

[0041] This embodiment uses the Type 40 water jet construction equipment to cut grooves in the area to be blasted, separating the grid arch frame from the anchor bolts and other parts of the area to be blasted, effectively mitigating the impact on the overall structural stability during blasting. This solves the technical problem in existing technologies where the integrity of the grid arch frame structure affects the overall structural stability of the tunnel when using traditional drill-and-blast methods to excavate other tunnels alongside an existing main tunnel.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the extrusion section 22 is designed as a conical structure, and the inner diameter of the extrusion section 22 gradually decreases from the first end 221 of the extrusion section to the second end 222 of the extrusion section.

[0043] The first end 221 of the extrusion section is positioned close to the first pipe 12.

[0044] In this embodiment, the extrusion section 22 is designed as a conical structure, and the inner diameter of the extrusion section 22 gradually decreases from the first end 221 to the second end 222, meaning that the first end 221 of the extrusion section with the larger diameter opening is positioned closer to the first pipe 12. When the water bomb 40 is moved to the extrusion section 22, it is fired into the area of ​​the tunnel to be blasted in a pulse form, that is, the area to be blasted is grooved, separating the grid arch frame, anchor bolts, and other parts of the part to be blasted, effectively solving the impact on the overall structural stability during blasting.

[0045] In this embodiment, the first pipe 12 is equipped with a water bomb valve 13, which can control the entry and exit of the water bomb. When closed, the water bomb cannot pass through, and when opened, the water bomb can pass through.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, the channel 21 further includes a first channel segment 23, which is located at the first end 221 of the extrusion section. One end of the first channel segment 23 is connected to the first pipe 12, and the other end of the first channel segment 23 is connected to the extrusion section 22.

[0047] The diameter of the first channel segment 23 is larger than the diameter of the water bullet 40.

[0048] In this embodiment, the first pipe 12 is designed as a cylindrical structure, and the diameter of the first pipe 12 is larger than the diameter of the water bullet 40. This ensures that the water bullet 40 is a complete water bullet 40 when it reaches the first pipe 12, that is, a complete water-absorbing and expanding water-absorbing resin containing water and sand. When it reaches the extrusion section 22, it is subjected to extrusion force, and the complete water bullet 40 is squeezed and broken into smaller sand-containing water-absorbing resin fragments before being sprayed out.

[0049] In this embodiment, water bullet 40 is an abbreviation for water-absorbing resin containing cutting sand. Water bullet 40 is made by mixing cutting sand such as garnet sand with high-molecular water-absorbing resin. Under the action of high-pressure water jet, it can generate a very strong cutting effect. The pressurization component 30 can form a very stable control pulse efficiency. At the same time, due to the flexibility of the water-absorbing resin, the wear on the equipment is small.

[0050] like Figure 1 and Figure 2 as well as Figure 3 As shown, in this embodiment, the channel 21 further includes a second channel segment 24, which is located at the second end 222 of the extrusion section and is connected to the extrusion section 22.

[0051] The diameter of the second channel segment 24 is smaller than the diameter of the water bullet 40 but larger than the diameter of the fragmented water bullet 41.

[0052] In this embodiment, the second channel segment 24 is located at the second end 222 of the extrusion segment and is connected to the extrusion segment 22. The second pipe segment 61 is designed as a cylindrical structure, and the diameter of the second pipe segment 61 is smaller than the diameter of the water bullet 40 but larger than the diameter of the breaking water bullet 40, thus ensuring that the breaking water bullet 40 is ejected from the second pipe segment 61. The second channel segment 24 is located at the second end 222 of the extrusion segment and is connected to the extrusion segment 22.

[0053] In this embodiment, the first pipe section 12 is designed as a cylindrical structure, and the diameter of the first pipe section 12 is larger than the diameter of the water bullet 40. This ensures that the water bullet 40 is a complete water bullet 40 when it reaches the first pipe section 12, that is, a complete water-absorbing resin containing water and sand that expands by absorbing water. When it reaches the extrusion section 22, it is subjected to extrusion force, and the complete water bullet 40 is squeezed and broken into smaller water-absorbing resin fragments containing sand. Then it reaches the second channel section 24 and is sprayed out as a completely broken water bullet 40.

[0054] like Figure 1 and Figure 2 as well as Figure 3 As shown, in this embodiment, the first pipe 12 is equipped with a pressurizing component 30, and the water bullet 40 is sprayed into the channel 21 of the nozzle device 20 through the pressurizing component 30.

[0055] In one embodiment, the pressurizing component 30 can apply pressure to the water bullet 40, pushing it into the nozzle device 20 to prevent backflow of water within the nozzle device 20, thus preventing the water bullet 40 from entering the nozzle.

[0056] like Figure 1 and Figure 2 as well as Figure 3As shown, in this embodiment, the pressurizing component 30 includes a first driving member 31 and a gear 32. The first driving member 31 is connected to the gear 32. A turbine 33 is rotatably connected to the end of the gear 32 away from the first driving member 31. The gear 32 drives the turbine 33 to rotate through the first driving member 31.

[0057] In this embodiment, the water bullet 40 pressurizer consists of a gear 32, a drive motor, and an inward-rolling turbine 33. The drive motor has gears 32 installed at both ends, and each gear 32 is connected to a turbine 33. When the drive motor rotates, it drives the inward-rolling turbine 33 to rotate through the connecting gears 32. At this time, a water flow is generated in the direction of the second channel section 24 of the nozzle device 20, which pushes the water bullet 40 into the nozzle. At the same time, the entry speed of the water bullet 40 can be adjusted by adjusting the rotation speed of the drive motor, thereby controlling the pulse frequency of the construction equipment.

[0058] like Figure 1 and Figure 2 as well as Figure 3 As shown, in this embodiment, the receiving groove 11 includes a first opening 111 and a second opening 112. The first opening 111 is adapted to be equipped with a moving component 50, which is slidably connected to the inner wall of the receiving groove 11. The second opening 112 is connected to the first pipe 12.

[0059] In this embodiment, the storage device 10 can be a water bomb box, and the receiving tank 11 is used to hold multiple water bombs 40 and water. The first opening 111 at the top of the receiving tank 11 is adapted to be equipped with a moving component 50. The moving component 50 is engaged with the inner wall of the receiving tank 11 and slides along the inner wall of the receiving tank 11. At this time, the water bombs 40 in the receiving tank 11 are under pressure, which drives the water bombs 40 to move to the second opening 112. Since the second opening 112 is connected to the first pipe 12, the water bombs 40 move through the first pipe 12 to the nozzle device 20 and are sprayed through the nozzle device 20 to the area to be blasted.

[0060] In this embodiment, the distance between the nozzle device 20 and the water cartridge box is controlled by the length of the first pipe 12. That is, when the nozzle device 20 is far away from the water cartridge box, the length of the first pipe 12 is designed to be longer, and when the nozzle device 20 is close to the water cartridge box, the length of the first pipe 12 is designed to be shorter.

[0061] In this embodiment, the distance between the nozzle device 20 and the water bomb box can be adjusted according to the construction conditions.

[0062] In this embodiment, the moving component 50 applies pressure to the water bullet 40 in the water bullet box, which helps to push the water bullet 40 to the nozzle device 20. At the same time, the pushing speed of the water bullet 40 can be controlled according to the working conditions of the equipment, making it highly practical.

[0063] like Figure 1and Figure 2 as well as Figure 3 As shown, in this embodiment, the moving component 50 includes:

[0064] The second driving member 51 is located in the receiving groove 11;

[0065] The movable part 52 is located in the first opening 111. The movable part 52 is connected to the second driving part 51, and the movable part 52 and the second driving part 51 are slidably connected to the inner wall of the receiving groove 11.

[0066] In this embodiment, the second driving component 51 can be a stepper motor, and the moving component 52 can be a pressure plate. Since the stepper motor is connected to the pressure plate, when the stepper motor moves along the inner wall of the receiving groove 11, it can drive the pressure plate to move along the inner wall of the receiving groove 11.

[0067] In this embodiment, the receiving tank 11 is used to hold multiple water bombs 40. A pressure plate is adapted to the first opening 111 at the top of the receiving tank 11. The pressure plate is snapped onto the side wall of the receiving tank 11 and is fixedly connected to a stepper motor. The pressure plate moves along the side wall of the receiving tank 11 together with the stepper motor. The purpose is to apply pressure to the multiple water bombs 40 in the receiving tank 11, which is beneficial for the construction equipment to cut the area to be blasted.

[0068] like Figure 1 and Figure 2 as well as Figure 3 As shown, in this embodiment, the tunnel portal breaking construction equipment also includes a water storage device 60, one end of which is provided with a second pipe 61, which is connected to the channel 21.

[0069] The second pipe 61 is equipped with a water pump 62.

[0070] In this embodiment, the water storage device 60 can be a water storage tank, and the water pump 62 can be a high-pressure water pump 62. The water storage tank and the high-pressure water pump 62 work together to deliver high-pressure water to the channel 21 of the nozzle device 20 through the second pipe 61. Under the action of the high-pressure water flow, the water bullet 40 in the channel 21 is pushed to the first channel section 23, the extrusion section 22 and the second channel section 24, and then sprayed out in the form of a high-pressure pulse, which is beneficial for cutting the target area to be blasted.

[0071] like Figure 1 and Figure 2 as well as Figure 3 As shown, in this embodiment, a guide rail 113 is installed on the inner wall of the receiving groove 11, and the guide rail 113 extends toward the direction close to the second opening 112.

[0072] In this embodiment, the guide rail 113 can be selected as a stepper motor guide rail 113. The guide rail 113 extends parallel to the axial direction of the storage device 10 towards the direction close to the second opening 112. Since the stepper motor is connected to the pressure plate, when the stepper motor moves along the stepper motor guide rail 113, it can drive the pressure plate to move along the stepper motor guide rail 113.

[0073] like Figure 4 and Figure 5 As shown in the figure, this embodiment of the invention also provides a method for tunnel portal demolition, which uses tunnel portal demolition equipment.

[0074] like Figure 4 and Figure 5 As shown, this embodiment includes the following steps:

[0075] Indoor tests were conducted: a lining cutting experimental model was created. The tunnel portal demolition equipment used was used to cut through the lining, and the cutting time was determined.

[0076] Develop a construction plan: Multiply the cutting time of the lining obtained from the experiment by 1.2 to obtain the construction cutting time; select construction machinery to cut out the required outline; and then carry out grooving construction on the lining to be removed on site.

[0077] In this embodiment, the first step is to conduct indoor tests: First, a lining cutting test model is made based on parameters such as the on-site steel reinforcement grid and concrete spraying layer. Then, a tunnel portal demolition equipment is used to conduct a complete cutting test on it. During the cutting, the cutting time of the hardest part should be recorded, and the pulse frequency should be continuously adjusted to obtain the optimal cutting pulse frequency, that is, to cut through the lining in the shortest time. This frequency is used to cut at least 10 sets of models. Finally, the longest time Tmax and the shortest time Tmin are removed, and the average cutting time T of the remaining 8 sets is obtained. The second step is to formulate a construction plan: To ensure that the constructed lining is completely cut through during on-site construction, the lining cutting time T obtained from the indoor test is multiplied by a coefficient of 1.2 to obtain the construction cutting time. Appropriate construction machinery is selected according to the on-site construction section conditions, with the guide rail type 113 machine being preferred, which can cut out the required contour more accurately and smoothly. Then, the grooving construction is carried out on-site for the lining to be demolished.

[0078] This embodiment proposes a construction method to ensure the cutting effect and complete the cutting process, since the lining material is relatively stable.

[0079] In an embodiment, Figure 4A schematic diagram of the structure for breaking through the tunnel entrance: First, the nozzle device 20 is used to cut grooves on the edge of the tunnel entrance to form a cutting groove 72. The constructed lining and the surrounding lining rock mass, i.e. the part to be broken 70, are cut apart. Then, a normal blasting process is carried out, and explosives are loaded into the blasting hole 71 for blasting. The constructed lining can then be cut apart.

[0080] In an embodiment, Figure 5 To address the issue of under-excavation, the following structural diagram is provided: For the already constructed lining 73, firstly, the nozzle device 20 is used to vertically cut the under-excavated surrounding rock 74 to create a first cutting seam 75, and then horizontally cuts a second cutting seam 76. If the effect is not satisfactory, a hydraulic breaker can be used for auxiliary demolition to remove the under-excavated surrounding rock.

[0081] This embodiment uses high-pressure water jet equipment to cut grooves in the area to be blasted, separating the grid arch and anchor rods of the part to be blasted from other parts. This means that after blasting, the grid arch and anchor rods will not stick together or be incompletely removed, effectively solving the problem of impact on the overall structural stability.

[0082] In summary, the present invention provides a tunnel portal breaching construction equipment, including a storage device 10 and a nozzle device 20; the storage device 10 is provided with a receiving groove 11, and a water bullet 40 is provided in the receiving groove 11, and a first pipe 12 is provided at one end of the receiving groove 11; the nozzle device 20 is provided with a channel 21, and the channel 21 is connected to the storage device 10 through the first pipe 12, and the water bullet 40 is sprayed to the area to be blasted through the nozzle device 20; wherein, the channel 21 includes a compression section 22, the diameter of the compression section 22 is smaller than the diameter of the water bullet 40, and the water bullet 40 is broken into fragments of water bullet 41 by the compression section 22.

[0083] This invention also provides a method for tunnel portal demolition, comprising the following steps: First, conducting indoor tests: A lining cutting test model is first constructed based on parameters such as the on-site reinforcing steel grid and sprayed concrete layer. Then, a tunnel portal demolition construction equipment is used to perform a complete cutting test on it. During the cutting process, the cutting time of the hardest part should be recorded, and the pulse frequency should be continuously adjusted to obtain the optimal cutting pulse frequency, i.e., the lining that is cut through in the shortest time. This frequency is used to cut at least 10 models, and finally, the longest time Tmax and the shortest time Tmin are removed, yielding the average cutting time T for the remaining 8 models. Second, developing a construction plan: To ensure complete cutting through of the constructed lining during on-site construction, the lining cutting time T obtained from the indoor test is multiplied by a coefficient of 1.2 to obtain the construction cutting time. Appropriate construction machinery is selected based on the on-site construction section conditions, with the guide rail type 113 machine being preferred, as it can cut the required contour more accurately and smoothly. Finally, the lining to be demolished is grooved on-site.

[0084] This invention uses high-pressure water jets to cut and partition the blasting area before blasting. During blasting, the pre-cut sections block energy outside the non-blasting area, reducing the impact on the non-blasting area and preventing the energy generated by the blast from being transmitted to the ground, causing vibrations and affecting the lives of urban residents.

[0085] During blasting, the energy disturbance causes cracks to form in the surrounding rock along the pre-cut direction, which concentrates the energy generated by the blasting in the blasting zone, resulting in better blasting effect and effectively solving the problems of over-excavation and under-excavation.

[0086] This invention uses high-pressure water jet equipment to cut the target surrounding rock, which can accurately locate the cutting position and produce an extremely smooth cross-section. By cutting at multiple angles, it can accurately break the target surrounding rock. Moreover, it is more efficient than a bulky mechanical hammer, can ignore the existence of joints, and will not affect the surrounding rock.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0088] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A tunnel portal breaching construction equipment, characterized in that, include: Storage device (10), the storage device (10) is provided with a receiving tank (11), the receiving tank (11) is provided with a water bullet (40), and a first pipe (12) is provided at one end of the receiving tank (11); The nozzle device (20) has a channel (21) inside, and the channel (21) is connected to the storage device (10) through the first pipe (12). The water bullet (40) is sprayed through the nozzle device (20) to the area to be blasted. The channel (21) includes a compression section (22), the diameter of which is smaller than the diameter of the water bomb (40), and the water bomb (40) is broken into fragments (41) by the compression section (22). The process of the water bomb (40) being broken into fragmented water bombs (41) by the extrusion section (22) includes: after the water bomb (40) is subjected to the force of the extrusion section (22), due to the pressure, the complete water bomb (40) is squeezed and broken into smaller sand-containing water-absorbing resin fragments, and finally the water bomb (40) is sprayed into the area of ​​the tunnel that needs to be blasted.

2. The tunnel portal demolition equipment according to claim 1, characterized in that: The extrusion section (22) is designed as a conical structure, and the inner diameter of the extrusion section (22) gradually decreases from the first end (221) of the extrusion section to the second end (222) of the extrusion section; The first end (221) of the extrusion section is positioned close to the first pipe (12).

3. The tunnel portal demolition equipment according to claim 2, characterized in that: The channel (21) further includes a first channel segment (23), which is located at the first end (221) of the extrusion section. One end of the first channel segment (23) is connected to the first pipe (12), and the other end of the first channel segment (23) is connected to the extrusion section (22). The diameter of the first channel segment (23) is larger than the diameter of the water bomb (40).

4. The tunnel portal demolition equipment according to claim 2, characterized in that: The channel (21) further includes a second channel segment (24), which is located at the second end (222) of the extrusion section and is connected to the extrusion section (22). The diameter of the second channel segment (24) is smaller than the diameter of the water bomb (40) but larger than the diameter of the fragmented water bomb (41).

5. The tunnel portal demolition equipment according to claim 1, characterized in that: The first pipe (12) is equipped with a pressurization assembly (30), and the water bullet (40) is sprayed through the pressurization assembly (30) into the channel (21) of the nozzle device (20).

6. The tunnel portal demolition equipment according to claim 5, characterized in that: The pressurization assembly (30) includes a first drive member (31) and a gear (32). The first drive member (31) is connected to the gear (32). A turbine (33) is rotatably connected to one end of the gear (32) away from the first drive member (31). The gear (32) drives the turbine (33) to rotate through the first drive member (31).

7. The tunnel portal demolition equipment according to claim 1, characterized in that: The receiving groove (11) includes a first opening (111) and a second opening (112). The first opening (111) is adapted to be equipped with a moving component (50). The moving component (50) is slidably connected to the inner wall of the receiving groove (11). The second opening (112) is connected to the first pipe (12).

8. The tunnel portal demolition equipment according to claim 7, characterized in that: The moving component (50) includes: The second driving member (51) is located within the receiving groove (11); The movable part (52) is located in the first opening (111), the movable part (52) is connected to the second driving part (51), and the movable part (52) and the second driving part (51) are slidably connected to the inner wall of the receiving groove (11).

9. The tunnel portal demolition equipment according to claim 1, characterized in that: The tunnel portal demolition equipment also includes a water storage device (60), one end of which is provided with a second pipe (61), which is connected to the channel (21); The second pipe (61) is equipped with a water pump (62).

10. The tunnel portal demolition equipment according to claim 7, characterized in that: The inner wall of the receiving groove (11) is equipped with a guide rail (113), which extends toward the direction of the second opening (112).

11. A construction method for breaking through a tunnel portal, characterized in that, The tunnel portal demolition equipment described in any one of claims 1 to 10 was used.

12. The tunnel portal demolition construction method according to claim 11, characterized in that, Includes the following steps: Indoor test: Make a lining cutting test model, use the tunnel portal demolition equipment to cut the lining, cut through the lining, and obtain the cutting time. Develop a construction plan: Multiply the cutting time of the lining obtained from the experiment by 1.2 to obtain the construction cutting time, select construction machinery to cut out the required outline, and then carry out grooving construction on the lining to be broken on site.

Images