Grouting device used before tunnel construction

Abstract

The utility model discloses a grouting device before tunnel construction, which belongs to the technical field of grouting before tunnel construction and comprises a tunnel, a grouting device and a grouting reinforcing mechanism. The construction method is novel in design and ingenious in device, by arranging the grouting reinforcement mechanism, before tunnel excavation, for example, before two meters of excavation each time, advanced small guide pipe supports need to be erected by four meters, the steel framework is installed in the tunnel, then the multiple advanced small guide pipes are pushed into the steel framework, the tails of the advanced small guide pipes are erected on the steel framework, and the construction efficiency is improved. Due to the existence of the steel framework, supporting of the advanced small guide pipe can form a whole, the integrity and rigidity are enhanced, the advanced small guide pipe is adopted for chemical grouting reinforcement construction, an integral protection shell can be formed around the tunnel after grouting is completed, the purpose of reinforcing and stabilizing a sand layer is achieved, and therefore the safety of tunnel construction is improved, and the construction period is shortened. And the personal safety of constructors is guaranteed, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of grouting before tunnel construction, and in particular to a grouting device before tunnel construction. Background Art

[0002] A tunnel is an engineering structure buried in the ground and is a form of human utilization of underground space. The structure of a tunnel consists of two parts: the main building and ancillary equipment. The main building consists of a tunnel body and a tunnel portal. The ancillary equipment includes a car shelter, fire-fighting facilities, emergency communications and drainage facilities. Long tunnels also have special ventilation and lighting equipment. The main purpose of tunnel grouting is to strengthen the surrounding rock, ensure the stability of the tunnel chamber, and ensure controlled emissions.

[0003] Tunnel grouting technology plays an important role in underground structure anti-seepage, foundation pit reinforcement, prevention of ground subsidence, foundation treatment of existing structures, and jacking with reduced friction. For tunnel engineering, grouting has the functions of filling, reinforcement and seepage reduction.

[0004] The current tunnel construction grouting method and grouting device are prone to collapse around the tunnel after grouting is completed. Therefore, it cannot achieve the purpose of reinforcing and stabilizing the sand layer, thereby affecting the tunnel construction and failing to ensure the personal safety of construction workers.

[0005] To this end, the present application proposes a grouting device before tunnel construction. Utility Model Content

[0006] The present application proposes a grouting device before tunnel construction to solve the problems raised in the above-mentioned background technology; by setting up a grouting reinforcement mechanism, before tunnel excavation, for example, each time two meters of excavation is carried out, it is necessary to set up an advance small conduit support for four meters, install a steel frame inside the tunnel, and then push multiple advance small conduits into the steel frame so that the tail of the advance small conduit is set up on the steel frame. The existence of the steel frame can make the support of the advance small conduit form a whole, enhance the integrity and rigidity, and after two meters are excavated, the remaining two meters can be used for support to prevent collapse and ensure safety. After two meters are excavated, four meters of advance small conduit support are made, and excavation is continued, and so on. In this way, the super-advanced small conduit chemical slurry grouting reinforcement construction is adopted. After the grouting is completed, an overall protective shell can be formed around the tunnel, which serves the purpose of reinforcing and stabilizing the sand layer, thereby improving the safety of tunnel construction and protecting the personal safety of construction workers, greatly improving the practicality of the device.

[0007] In order to achieve the above objectives, this application adopts the following technical solutions:

[0008] A grouting device before tunnel construction includes a tunnel, a grouting device and a grouting reinforcement mechanism. The grouting reinforcement mechanism is arranged inside the tunnel. The grouting reinforcement mechanism includes a steel frame and an advance small tube. The steel frame is installed and connected inside the tunnel. A plurality of advance small tubes are inserted into the interior of the steel frame, and one end of each of the advance small tubes extends into the interior of the tunnel. The grouting device includes an outer shell, a slurry barrel, a grouting pump, an input pipe, an output pipe, a grouting head, a fixing barrel, a sleeve, a first thread and a second thread.

[0009] As a preferred embodiment, a slurry drum is fixedly connected to the interior of the housing, a grouting pump is fixedly connected to the top of the housing, an input end of the grouting pump is fixedly connected to an input pipe, and one end of the input pipe extends to the interior of the slurry drum, and an output end of the grouting pump is fixedly connected to an output pipe;

[0010] By starting the grouting pump, the slurry in the slurry barrel is transported to the output pipe through the grouting pump, thereby improving the practicality of the device.

[0011] As a preferred embodiment, one end of the output pipe is fixedly connected to a grouting head, and the end of the grouting head away from the output pipe is detachably connected to one of the leading small guide tubes;

[0012] The slurry in the output pipe then enters the grouting head and is grouted into the leading small conduit, thereby improving the grouting efficiency and the practicality of the device.

[0013] As a preferred embodiment, the outside of the grouting head is fixedly connected to a fixing cylinder, and the outside of the fixing cylinder is provided with a sleeve;

[0014] By arranging a sleeve outside the fixed tube, the sleeve facilitates quick connection between the grouting head and the advance small catheter, as well as quick disassembly, thereby improving grouting efficiency and enhancing the practicality of the device.

[0015] As a preferred embodiment, the exterior of the fixing cylinder is provided with a first thread, the interior of the sleeve is provided with a second thread, and the sleeve is threadably connected to the fixing cylinder via the first thread and the second thread;

[0016] By rotating the sleeve, the second thread inside the sleeve and the first thread outside the fixed tube move the sleeve toward the leading small catheter and then sleeved on the outside of the leading small catheter, thereby improving the practicality of the device.

[0017] As a preferred embodiment, a protective shell is fixedly connected to the top of the shell and located outside the grouting pump, and one end of the output pipe extends to the outside of the protective shell;

[0018] By setting up a protective shell, a protective shell is installed on the outside of the grouting pump. The protective shell can protect the grouting pump, increase the service life of the grouting pump, and thus improve the practicality of the device.

[0019] As a preferred embodiment, the housing is provided with a moving mechanism, the moving mechanism comprising a support rod, a push handle, an anti-wear sleeve, a base and a universal wheel, the support rod is fixedly connected to the outside of the support rod, one end of the support rod is fixedly connected to the push handle, and the outer cover of the push handle is provided with an anti-wear sleeve;

[0020] By providing an anti-wear sleeve on the outside of the push handle, the friction of the grouting device on the hands during the pushing process can be reduced, which protects the hands of the construction workers and thus improves the practicality of the device.

[0021] As a preferred embodiment, the bottom of the housing is fixedly connected to a base, and the bottom of the base is rotatably connected to a plurality of universal wheels;

[0022] By opening the foot brake on the universal wheel at the bottom of the grouting device, the grouting device can be moved using the universal wheel, thereby improving the practicality of the device.

[0023] Beneficial effects of this application:

[0024] 1. The grouting device before tunnel construction is provided with a grouting reinforcement mechanism. Before tunnel excavation, for example, each time two meters of excavation is carried out, it is necessary to set up an advanced small conduit to support four meters, install a steel frame inside the tunnel, and then push multiple advanced small conduits into the steel frame so that the tail of the advanced small conduit is set up on the steel frame. The existence of the steel frame can form the support of the advanced small conduit as a whole, thereby enhancing the integrity and rigidity. After two meters are excavated, the remaining two meters can be used as support to prevent collapse and ensure safety. After two meters are excavated, four meters of advanced small conduit support is made, and excavation is continued. And so on. In this way, the super-advanced small conduit chemical slurry grouting reinforcement construction is adopted. After the grouting is completed, an overall protective shell can be formed around the tunnel, which plays the purpose of reinforcing and stabilizing the sand layer, thereby improving the safety of tunnel construction and protecting the personal safety of construction workers, thereby greatly improving the practicality of the device.

[0025] 2. The grouting device before tunnel construction is provided with a grouting device. When the grouting device is moved to the use position, the grouting head is connected to the advance small tube. After the grouting head is docked with the advance small tube, the sleeve is rotated, and the second thread inside the sleeve and the first thread outside the fixed tube are used to move the sleeve toward the advance small tube, and then the sleeve is sleeved on the outside of the advance small tube to form a connection between the grouting head and the advance small tube. The grouting pump is then started, and the slurry in the slurry tube is transported to the output pipe through the input pipe by the grouting pump. The slurry in the output pipe then enters the grouting head and is grouted into the advance small tube. Thus, the grouting efficiency is improved and the practicality of the device is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main body of the device of this application;

[0027] Figure 2 For this application Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 This is a schematic diagram of the interior of the grouting device of the present application;

[0029] Figure 4 For this application Figure 3 Enlarged view of point B in the middle.

[0030] Numbers in the figure: 1. Tunnel; 2. Grouting device; 21. Shell; 22. Slurry barrel; 23. Grouting pump; 24. Input pipe; 25. Output pipe; 26. Grouting head; 27. Fixed cylinder; 28. Sleeve; 29. ​​First thread; 30. Second thread; 3. Grouting reinforcement mechanism; 31. Steel frame; 32. Advance small guide tube; 4. Protective shell; 5. Moving mechanism; 51. Support rod; 52. Push handle; 53. Anti-wear sleeve; 54. Base; 55. Universal wheel. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0032] Reference Figure 1-4 A grouting device before tunnel construction includes a tunnel 1, a grouting device 2 and a grouting reinforcement mechanism 3.

[0033] Reference Figure 1-2The tunnel 1 is provided with a grouting reinforcement mechanism 3, which includes a steel frame 31 and an advance small conduit 32. The steel frame 31 is installed and connected to the tunnel 1. A plurality of advance small conduits 32 are inserted into the interior of the steel frame 31, and one end of each advance small conduit 32 extends to the interior of the tunnel 1. Before tunnel excavation, for example, each time two meters are excavated, it is necessary to set up an advance small conduit 32 to support four meters. The steel frame 31 is installed in the tunnel 1, and then a plurality of advance small conduits 32 are pushed into the interior of the steel frame 31, so that the tail of the advance small conduit 32 is set up at On the steel skeleton 31, the existence of the steel skeleton 31 can form the support of the advance small duct 32 as a whole, enhance the integrity and rigidity, and after two meters are excavated, the remaining two meters can be used as support to prevent collapse and ensure safety. After two meters are excavated, four meters of advance small duct 32 support is used, and excavation is continued, and so on. In this way, the chemical slurry grouting reinforcement construction of the super-advanced small duct 32 is used. After the grouting is completed, an overall protective shell can be formed around the tunnel 1, which serves the purpose of reinforcing and stabilizing the sand layer, thereby improving the safety of tunnel construction and ensuring the personal safety of construction workers.

[0034] Reference Figure 1-4 The grouting device 2 includes a shell 21, a slurry barrel 22, a grouting pump 23, an input pipe 24, an output pipe 25, a grouting head 26, a fixed barrel 27, a sleeve 28, a first thread 29 and a second thread 30. The interior of the shell 21 is fixedly connected to the slurry barrel 22, the top of the shell 21 is fixedly connected to the grouting pump 23, the input end of the grouting pump 23 is fixedly connected to the input pipe 24, and one end of the input pipe 24 extends to the interior of the slurry barrel 22, and the output end of the grouting pump 23 is fixedly connected to the output pipe 25; by starting the grouting pump 23, the slurry in the slurry barrel 22 is transported to the output pipe 25 through the input pipe 24 by the grouting pump 23, thereby improving the practicality of the device.

[0035] Reference Figure 1-4 One end of the output pipe 25 is fixedly connected to a grouting head 26, and the end of the grouting head 26 away from the output pipe 25 is detachably connected to one of the advance small tubes 32; the slurry in the output pipe 25 enters the grouting head 26 and is grouted into the advance small tube 32, thereby improving the grouting efficiency and enhancing the practicality of the device.

[0036] Reference Figure 1-4 The outside of the grouting head 26 is fixedly connected to a fixed tube 27, and a sleeve 28 is provided on the outside of the fixed tube 27; by providing the sleeve 28 on the outside of the fixed tube 27, the sleeve 28 facilitates the rapid connection between the grouting head 26 and the advance small catheter 32, as well as the rapid disassembly, thereby improving the grouting efficiency and thus enhancing the practicality of the device.

[0037] Reference Figure 1-4A first thread 29 is provided on the outside of the fixed cylinder 27, and a second thread 30 is provided on the inside of the sleeve 28, and the sleeve 28 is threadedly connected to the fixed cylinder 27 through the first thread 29 and the second thread 30; by rotating the sleeve 28, the second thread 30 inside the sleeve 28 and the first thread 29 outside the fixed cylinder 27 make the sleeve 28 move toward the direction of the advance small catheter 32, and then be sleeved on the outside of the advance small catheter 32, thereby improving the practicality of the device.

[0038] Reference Figure 1 、 3 A protective shell 4 is fixedly connected to the top of the outer shell 21 and located outside the grouting pump 23, and one end of the output pipe 25 extends to the outside of the protective shell 4; by setting the protective shell 4, the protective shell 4 is installed outside the grouting pump 23, and the protective shell 4 can protect the grouting pump 23, thereby increasing the service life of the grouting pump 23 and improving the practicality of the device.

[0039] Reference Figure 1-4 A moving mechanism 5 is provided on the outer shell 21, and the moving mechanism 5 includes a support rod 51, a push handle 52, an anti-wear sleeve 53, a base 54 and a universal wheel 55. The support rod 51 is fixedly connected to the outside of the support rod 51, and one end of the support rod 51 is fixedly connected to the push handle 52, and the outer sleeve of the push handle 52 is provided with an anti-wear sleeve 53; by arranging the anti-wear sleeve 53 on the outside of the push handle 52, the friction of the grouting device 2 on the hands during the pushing process can be reduced, which plays a protective role on the hands of the construction workers, thereby improving the practicality of the device.

[0040] Reference Figure 1-4 The bottom of the shell 21 is fixedly connected to a base 54, and the bottom of the base 54 is rotatably connected to a plurality of universal wheels 55; by opening the foot brake on the universal wheel 55 at the bottom of the grouting device 2, the universal wheel 55 is used to move the grouting device 2, thereby improving the practicality of the device.

[0041] Working principle: Before tunnel excavation, for example, each time two meters are excavated, it is necessary to set up an advance small pipe 32 to support four meters, install the steel frame 31 inside the tunnel 1, and then push multiple advance small pipes 32 into the steel frame 31, so that the tail of the advance small pipe 32 is set up on the steel frame 31. The existence of the steel frame 31 can make the support of the advance small pipe 32 form a whole, enhance the integrity and rigidity, and after two meters are excavated, the remaining two meters can be used for support to prevent collapse and ensure safety. After two meters are excavated, four meters of advance small pipe 32 support is made, and excavation is continued, and so on. In this way, the super-advanced small pipe 32 chemical slurry grouting reinforcement construction is adopted. After the grouting is completed, an overall protective shell can be formed around the tunnel 1, which serves the purpose of reinforcing and stabilizing the sand layer, thereby improving the safety of tunnel construction and ensuring the personal safety of construction workers.

[0042] When the leading small conduit 32 is set up and grouting is carried out, the foot brake on the universal wheel 55 at the bottom of the grouting device 2 is opened, and the universal wheel 55 is used to move the grouting device 2. When the universal wheel 55 is in an active state, the push handle 52 is used to push the grouting device 2, so that the grouting device 2 is moved to the use position through the universal wheel 55. By arranging an anti-wear sleeve 53 on the outside of the push handle 52, the friction of the grouting device 2 on the hands during the pushing process can be reduced, which plays a protective role for the hands of the construction workers. When the grouting device 2 is moved to the use position, the grouting head 26 is connected to the leading small conduit 32. When the grouting device 2 is moved to the use position, the grouting head 26 is connected to the leading small conduit 32. After the slurry head 26 is docked with the advance small tube 32, the sleeve 28 is then rotated, and the sleeve 28 is moved toward the direction of the advance small tube 32 through the second thread 30 inside the sleeve 28 and the first thread 29 outside the fixed tube 27, and then is sleeved on the outside of the advance small tube 32, so that the grouting head 26 is connected to the advance small tube 32, and then the grouting pump 23 is started, and the slurry in the slurry tube 22 is transported to the output pipe 25 through the input pipe 24 by the grouting pump 23. The slurry in the output pipe 25 then enters the grouting head 26 and is grouted into the advance small tube 32, thereby improving the grouting efficiency.

[0043] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present application within the technical scope disclosed in the present application, and they should be covered by the protection scope of the present application.

Claims

1. A grouting device before tunnel construction, comprising a tunnel (1), a grouting device (2) and a grouting reinforcement mechanism (3), characterized in that: A grouting reinforcement mechanism (3) is provided inside the tunnel (1), and the grouting reinforcement mechanism (3) comprises a steel frame (31) and an advance small conduit (32). The steel frame (31) is installed and connected inside the tunnel (1), and a plurality of advance small conduits (32) are inserted inside the steel frame (31), and one end of each of the advance small conduits (32) extends into the interior of the tunnel (1). The grouting device (2) comprises a housing (21), a slurry barrel (22), a grouting pump (23), an input pipe (24), an output pipe (25), a grouting head (26), a fixing barrel (27), a sleeve (28), a first thread (29), and a second thread (30).

2. A grouting device before tunnel construction according to claim 1, characterized in that: A slurry barrel (22) is fixedly connected to the interior of the housing (21), a grouting pump (23) is fixedly connected to the top of the housing (21), an input end of the grouting pump (23) is fixedly connected to an input pipe (24), and one end of the input pipe (24) extends to the interior of the slurry barrel (22), and an output end of the grouting pump (23) is fixedly connected to an output pipe (25).

3. A grouting device before tunnel construction according to claim 2, characterized in that: One end of the output pipe (25) is fixedly connected to a grouting head (26), and one end of the grouting head (26) away from the output pipe (25) is detachably connected to one of the leading small guide tubes (32).

4. A grouting device before tunnel construction according to claim 3, characterized in that: The outside of the grouting head (26) is fixedly connected to a fixing cylinder (27), and the outside of the fixing cylinder (27) is provided with a sleeve (28).

5. A grouting device before tunnel construction according to claim 4, characterized in that: The exterior of the fixing cylinder (27) is provided with a first thread (29), the interior of the sleeve (28) is provided with a second thread (30), and the sleeve (28) is threadably connected to the fixing cylinder (27) via the first thread (29) and the second thread (30).

6. A grouting device before tunnel construction according to claim 1, characterized in that: A protective shell (4) is fixedly connected to the top of the housing (21) and located outside the grouting pump (23), and one end of the output pipe (25) extends to the outside of the protective shell (4).

7. A grouting device before tunnel construction according to claim 1, characterized in that: A moving mechanism (5) is provided on the housing (21), and the moving mechanism (5) includes a support rod (51), a push handle (52), an anti-wear sleeve (53), a base (54) and a universal wheel (55). The support rod (51) is fixedly connected to the outside of the support rod (51), one end of the support rod (51) is fixedly connected to the push handle (52), and the outer sleeve of the push handle (52) is provided with an anti-wear sleeve (53).

8. A grouting device before tunnel construction according to claim 7, characterized in that: The bottom of the housing (21) is fixedly connected to a base (54), and the bottom of the base (54) is rotatably connected to a plurality of universal wheels (55).

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