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CN-116696359-B - Tunnel portal breaking construction equipment and construction method thereof

CN116696359BCN 116696359 BCN116696359 BCN 116696359BCN-116696359-B

Abstract

The application relates to the technical field of tunnels, in particular to tunnel portal breaking construction equipment and a construction method thereof, wherein the tunnel portal breaking construction equipment comprises a storage device and a spray head device, the storage device is provided with a containing groove, a water bomb is arranged in the containing groove, and one end of the containing groove is provided with a first pipeline; the water bomb is characterized in that a channel is arranged in the spray head device, the channel is connected with the storage device through the first pipeline, the water bomb is sprayed to a region needing blasting through the spray head 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 crushed into fragments through the extrusion section. The application cuts the needed blasting area by using the water-bullet type water jet construction equipment, so that the grid arch frame of the part to be blasted is separated from the anchor rod and other parts, and the influence on the stability of the whole structure is effectively solved during blasting.

Inventors

  • WANG JIANPENG
  • LIU XUE
  • SUN CHAO
  • LI MENG
  • LI TIANHE
  • ZHAN JIAWANG
  • Dong Meiqiang
  • WANG HAN

Assignees

  • 中铁发展投资有限公司
  • 中铁四局集团有限公司
  • 中国矿业大学(北京)
  • 北京国锚工程技术研究院有限公司

Dates

Publication Date
20260508
Application Date
20220623

Claims (12)

  1. 1. A tunnel portal breach construction apparatus, comprising: the storage device (10), the storage device (10) is provided with a containing groove (11), a water bomb (40) is arranged in the containing groove (11), and a first pipeline (12) is arranged at one end of the containing groove (11); The water bomb spraying device comprises a spraying head device (20), wherein a channel (21) is arranged in the spraying head device (20), the channel (21) is connected with a storage device (10) through a first pipeline (12), and a water bomb (40) is sprayed to a region needing to be blasted through the spraying head device (20); Wherein the channel (21) comprises a pressing section (22), the diameter of the pressing section (22) is smaller than the diameter of the water bullet (40), and the water bullet (40) is broken into fragments water bullet (41) through the pressing section (22); the process of crushing the water bomb (40) into fragments (41) through the extrusion section (22) comprises the steps that after the water bomb (40) receives the acting force of the extrusion section (22) on the water bomb, the whole water bomb (40) is extruded and crushed into small sand-containing water absorbent resin fragments under the action of pressure, and finally the water bomb (40) is sprayed to the area required to be blasted in the tunnel.
  2. 2. The tunnel portal demolition construction equipment according to claim 1, wherein the extrusion section (22) is provided with a conical structure, and the inside diameter of the extrusion section (22) is gradually reduced from the first end (221) of the extrusion section to the second end (222) of the extrusion section; Wherein the first end (221) of the pressing section is arranged towards the first pipe (12).
  3. 3. The tunnel portal demolition construction equipment according to claim 2, wherein the passageway (21) further comprises a first passageway section (23), the first passageway section (23) being located at the first end (221) of the extrusion section, the first passageway section (23) being connected at one end to the first pipe (12), the first passageway section (23) being connected at the other end to the extrusion section (22); Wherein the diameter of the first channel section (23) is larger than the diameter of the water bomb (40).
  4. 4. The tunnel portal demolition construction equipment according to claim 2, characterized in that the passageway (21) further comprises a second passageway section (24), the second passageway section (24) being located at the extrusion section second end (222), the second passageway section (24) being connected with the extrusion section (22); Wherein the diameter of the second channel section (24) is smaller than the diameter of the water bullet (40) and larger than the diameter of the fragment water bullet (41).
  5. 5. Tunnel portal demolition construction equipment according to claim 1, characterized in that the first pipe (12) is fitted with a pressurizing assembly (30), through which pressurizing assembly (30) the water bomb (40) is sprayed into the channel (21) of the spray head device (20).
  6. 6. The tunnel portal demolition construction equipment according to claim 5, wherein the pressurizing assembly (30) comprises a first driving member (31) and a gear (32), the first driving member (31) is connected with the gear (32), one end of the gear (32) far away from the first driving member (31) is rotatably connected with a turbine (33), and the gear (32) drives the turbine (33) to rotate through the first driving member (31).
  7. 7. The tunnel portal demolition construction equipment according to claim 1, wherein the receiving groove (11) comprises a first opening (111) and a second opening (112), the first opening (111) is adapted with a moving assembly (50), the moving assembly (50) is slidingly connected with the inner wall of the receiving groove (11), and the second opening (112) is connected with the first pipe (12).
  8. 8. The tunnel portal breach construction equipment of claim 7, wherein said moving assembly (50) comprises: A second driving member (51), the second driving member (51) being located in the accommodation groove (11); The moving piece (52) is located in the first opening (111), the moving piece (52) is connected with the second driving piece (51), and the moving piece (52) and the second driving piece (51) are slidably connected with the inner wall of the accommodating groove (11).
  9. 9. The tunnel portal breaking construction equipment according to claim 1, further comprising a water storage device (60), wherein a second pipeline (61) is arranged at one end of the water storage device (60), and the second pipeline (61) is connected with the channel (21); wherein the second pipe (61) is provided with a water pump (62).
  10. 10. The tunnel portal breaking equipment according to claim 7, wherein a guide rail (113) is installed on the inner wall of the accommodating groove (11), and the guide rail (113) is extended in a direction approaching the second opening (112).
  11. 11. A tunnel portal breaking construction method, characterized in that the tunnel portal breaking construction equipment according to any one of claims 1 to 10 is adopted.
  12. 12. The tunnel portal breach construction method of claim 11, comprising the steps of: making a lining cutting experimental model, cutting the lining by using the tunnel portal breaking construction equipment, cutting the lining thoroughly, and obtaining cutting-through time; And (3) formulating a construction scheme, namely multiplying the cutting-through time of the lining obtained through experiments by 1.2, selecting a construction machine to cut out a required profile as construction cutting time, and then carrying out grooving construction on the lining to be broken on site.

Description

Tunnel portal breaking construction equipment and construction method thereof Technical Field The application relates to the technical field of tunnels, in particular to tunnel portal breaking construction equipment and a construction method thereof. Background With the promotion of urban area, a large number of people are rushed into cities, and the track traffic construction of a plurality of economically developed central cities is rapidly developed. The subway station is developed towards the directions of large span, long roadway and multiple layers, and the importance of the structure is self-evident. A subway station often has a plurality of tunnel interfaces, and current construction technology needs to build a main tunnel, and then uses a traditional drilling and blasting method to excavate other tunnels from the lateral side. When subways and highway tunnels are built as century projects, a large number of grille arches and the like are often required, and a firm integral structure is formed. Therefore, when the side surface of the existing main tunnel is firmly excavated by using a drilling and blasting method, not only the whole structure is disturbed little to influence the safety and stability of the structure, but also the grid arch frame is not completely broken, and meanwhile, the edges of the tunnel are cleaned manually by using electric welding cutting and other modes and then are constructed in the next step, so that the construction time is greatly prolonged, and the best construction period is easily missed. Disclosure of Invention The application aims to solve the technical problem that the stability of the whole structure of a tunnel can be influenced due to the integrity of a grid arch structure when other tunnels are excavated on the side surface of the existing main tunnel by using the traditional drilling and blasting method in the prior art, and provides tunnel portal breaking construction equipment and a construction method thereof. In order to achieve the above purpose, the invention adopts the following technical scheme: a tunnel portal breach construction equipment comprising: 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 spray head device is internally provided with a channel which is connected with the storage device through the first pipeline, the water bomb is sprayed to an area to be blasted through the spray head 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 crushed into fragments through the extrusion section. Further, the extrusion section is of a cone structure, and the inner diameter of the extrusion section gradually becomes smaller from the first end of the extrusion section to the second end of the extrusion section; wherein the first end of the extrusion section is disposed proximate to the first conduit. Further, the channel further comprises a first channel section, the first channel section is positioned at the first end of the extrusion section, one end of the first channel section is connected with the first pipeline, and the other end of the first channel section is connected with the extrusion section; wherein the diameter of the first channel section is larger than the diameter of the water bomb. Further, the channel further comprises a second channel section, the second channel section is positioned at the second end of the extrusion section, and the second channel section is connected with the extrusion section; wherein the diameter of the second channel section is smaller than the diameter of the cartridge and larger than the diameter of the fragment cartridge. Further, the first pipe is provided with a pressurizing assembly, and the water bomb is sprayed into the channel of the spray head device through the pressurizing assembly. Further, the pressurizing assembly comprises a first driving piece and a gear, the first driving piece is connected with the gear, one end, away from the first driving piece, of the gear is rotationally connected with a turbine, and the gear drives the turbine to rotate through the first driving piece. Further, the accommodating groove comprises a first opening and a second opening, the first opening is matched with a moving assembly, the moving assembly is in sliding connection with the inner wall of the accommodating groove, and the second opening is connected with the first pipeline. Further, the moving assembly includes: the second driving piece is positioned in the accommodating groove; The moving piece is positioned at the first opening and connected with the second driving piece, and the moving piece and the second driving piece are in sliding connection with the inner wall of the accommodating groove. Further, the tunnel portal breaking construction equipment further comprises a