Pipe-roofing permanent and temporary combination process

Abstract

The invention relates to the technical field of tunnel construction, in particular to a permanent and temporary pipe-roofing combination process. Comprising the following steps: pre-reinforcing a tunnel bottom plate; a test tube is prepared in advance for water stopping and deviation data collection; slurry balance pipe jacking; the muddy water is conveyed to a front excavation face of the pipe jacking machine head and is prevented from permeating into the excavation face; grouting the side wall to stop water; side wall grouting and water stopping are conducted through grouting holes reserved in the upper end and the lower end of the side wall steel plate; disassembling the steel pipe; after pipe jacking is completed, the steel plate is dismantled, and the pipeline is temporarily supported after being dismantled; structure construction; steel bar binding and concrete pouring are conducted; after earth in the channel is excavated, pavement paving is conducted; the method has the beneficial effects that the problems that in the construction technology, construction is tedious, the construction efficiency is low, steel pipes needing to be added cannot be integrally added, and different pipe bodies cannot be integrally added are solved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and more specifically to a permanent and temporary combination process of a pipe-roof. Background Art

[0002] When constructing a tunnel, it is necessary to use pipe sheds, pipe curtains, horizontal rotary grouting and other methods to support the strata in advance before tunnel excavation; the pipe curtain method is a construction technology that uses larger diameter steel pipes to form a curtain in advance underground to build a large-section underground space, and is an underground dark excavation technology; commonly used pipe curtain construction methods mainly include extrusion and expansion pipe pulling method and ramming pipe method, but both methods have the disadvantages of large stratum disturbance and low construction accuracy. In addition, there is also a mud-water balance pipe jacking method, but the cost is relatively high; at the same time, different pipe bodies cannot be added as a whole during the steel pipe adding process; similar to a spiral excavation pipe jacking pipe curtain construction method with patent number CN201310558827.X, the method is, Step 1: prepare the foundation pit and site; Step 2: install and debug the spiral excavation pipe jacking curtain construction equipment and electric welding machine; Step 3: install the common drill bit, guide head, end head, correction cylinder, the first section of the spiral drill rod, the first section of the outer sleeve and the first section of the pipe curtain steel pipe on the spiral excavation pipe jacking drilling rig; Step 4: adjust the entry angle; Step 5: drill and jacking; Step 6: connect the ruler; Step 7: cycle drilling, jacking and connecting the ruler; Step 8: remove the common drill bit, guide head, end head and correction cylinder at the receiving foundation pit; Step 9: cycle rod removal; Step 10: move the spiral excavation pipe jacking drilling rig to the second hole position, and repeat steps 3 to 10; Step 11: and so on, complete the construction of the pipe curtain steel pipe at all other hole positions. The present invention adopts a method combining spiral excavation and oil cylinder jacking, which has little disturbance to the stratum and high construction accuracy; however, this method has cumbersome construction and low construction efficiency, and cannot add steel pipes that need to be added as a whole, and cannot add different pipe bodies as a whole. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art, such as cumbersome construction, low construction efficiency, inability to add steel pipes that need to be added as a whole, and inability to add different pipe bodies as a whole.

[0004] To this end, the technical solution adopted is a permanent and temporary combination process of a tube-roof according to the present invention, comprising the following steps: S1: Pre-reinforcement of the tunnel floor; preparation of test pipes for water stopping and deflection data collection; S2: Mud and water balance pipe jacking: send mud and water to the excavation surface in front of the pipe jacking machine head to prevent mud and water from penetrating into the excavation surface; S3: Grouting water stop on the side wall; Grouting water stop on the side wall through the grouting holes reserved at the upper and lower ends of the side wall steel plate; S4: Steel pipe dismantling: After the pipe jacking is completed, the steel plate is removed and temporary support is provided for the pipeline; S5: Structural construction: reinforcement tying and concrete pouring; S6: Road surface paving is carried out after excavation of earthwork in the channel.

[0005] Preferably, the S1 comprises: S11: adding pipes by using a porous pipe rotating adding device and destroying the surrounding soil by high pressure jet cutting; S12: pressurizing and conveying the hardened material slurry, spraying, cutting the formation, mixing, draining mud, and concentrating the mud; S13: Through slurry preparation, slurry spraying, and subsequent slurry discharge and mud water treatment, an engineering construction chain is formed; S14: The construction process can be monitored by monitoring the auxiliary flow and pressure data.

[0006] Preferably, the S2 comprises: S21: Mix the mud and water to a set concentration and specific gravity; S22: The mud water is delivered to the excavation surface in front of the pipe jacking machine head through the mud water delivery system, and the mud water forms an impermeable mud film on the excavation surface; S23: By preventing mud and water from penetrating into the excavation surface, the mud and water pressure is adjusted to balance the groundwater pressure and soil pressure; S24: As the pipe jacking machine head moves forward, the cutter disc cuts the soil. The cut residual soil is fully mixed with mud and water, and then transported by the mud discharge system to the ground mud and water separation equipment for treatment. The separated residual soil is transported away, and the mud and water are sent to the water supply system for recycling.

[0007] Preferably, the S3 comprises: S31: Grouting holes are reserved at the upper and lower ends of the side wall steel plate. After the construction of the two adjacent pipe curtain sections is completed, grouting is performed on the side wall to stop water; S32: Use cement-water glass double liquid grouting material to completely seal the space between the side walls and complete water stopping.

[0008] Preferably, the S4 comprises: S41: The steel plate on the side wall of the pipeline adopts a detachable design; S42: After the pipe jacking construction is completed, the single 6m long and 1.6m wide steel plate will be removed to provide temporary support for the pipeline.

[0009] Preferably, the S5 comprises: S51: Familiarize yourself with the drawings and check the specifications, shapes and quantities of the processed steel bars; S52: Be familiar with the structural construction drawings and reinforcement drawings, and understand the different binding methods for different parts; S53: The burnt wire used to tie the steel bars should be cut according to the diameter of the steel bars to be tied and straightened.

[0010] Preferably, the S5 comprises: S54: Before pouring concrete, remove the slag, dirt and water in the foundation pit, and avoid pouring dry concrete mix into the foundation pit with water. S55: Before pumping concrete, use cement slurry mixed according to the designed mix ratio or concrete prepared with half the aggregate to lubricate the pipeline.

[0011] Preferably, the S6 comprises: S61: After the tunnel structure strength reaches the required level, the soil in the tunnel is excavated directly by an excavator or by adding water and pumping out the sludge; S62: After the excavation of the channel is completed, the exposed surface will be decorated and renovated, and the road surface can be paved at the same time.

[0012] Preferably, the porous tube rotary adding device comprises an adding tube, a plurality of adding tubes are provided, the plurality of adding tubes are all inserted and added into the side support fixing seat and the adding base platform, the side support fixing seat and the adding base platform are both fixed on the device adjustment seat, the eccentric driver on the device adjustment seat drives the adding base platform to rotate the threaded engagement to enable the adding tube to be added; the device adjustment seat is connected in an arc-shaped sliding manner and locked on the device base; the bottom end of the adding tube is pointed, and a plurality of openings are evenly provided on the bottom end of the adding tube.

[0013] Preferably, an inner arc seat is provided in the device base, an arc-shaped device adjustment seat is provided on the inner arc seat, an adjustment gear shaft is fixed to the rear end of the device adjustment seat, the device adjustment seat is rotatably connected to the inner arc seat through the adjustment gear shaft, the upper and lower ends of the adjustment gear shaft respectively mesh with the rack and the adjustment rack in the upper support rack seat of the transmission, the adjustment rack slides transversely in the lower adjustment rack seat, the adjustment rack is rotatably connected to the drive screw, and the drive screw is connected to the side end of the lower adjustment rack seat through threaded cooperation; The added base platform includes a base, an internal threaded cylinder and an external limit ratchet. The base is fixed at the lower end of the device adjustment seat. A plurality of internal threaded cylinders are rotatably arranged in the base. A plurality of external limit ratchets are fixed on the outer wall of the threaded cylinder. The external limit ratchets are limitedly rotated in the base. The inner wall of the threaded barrel is connected to the adding pipe through threaded fitting; The eccentric driver comprises a driving motor, which is fixed to the upper end of the device adjustment seat, and the driving motor transmission shaft is fixed to the eccentric position of the eccentric driving platform. A driving rod is fixed to the eccentric driving platform, and a connecting ball is fixed to the lower end of the driving rod. The driving rod is hinged in the driving connecting platform through the connecting ball. The driving connecting platform is longitudinally limited and slid in the device adjustment seat, and a plurality of ratchet seats are fixed to the lower end of the driving connecting platform. A plurality of driving pawls are rotatably connected in the pawl seat, and the driving pawls are inserted in the outer limit ratchet.

[0014] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in this application document.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a flow chart of the construction process of the present invention; Figure 2 The overall structure of a porous tube rotary adding device of the present invention is shown in FIG. Figure 1 ; Figure 3 The overall structure of a porous tube rotary adding device of the present invention is shown in FIG. Figure 2 ; Figure 4 The structure of the base of the device of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure of the base of the device of the present invention is shown in FIG. Figure 2 ; Figure 6 It is a schematic structural diagram of the side support fixing seat of the present invention; Figure 7 It is a structural schematic diagram of the addition tube of the present invention; Figure 8 This is a schematic diagram of the structure of the device adjustment seat of the present invention. Figure 1 ; Fig. 9 This is a schematic diagram of the structure of the device adjustment seat of the present invention. Figure 2 ; Fig.10 It is a structural schematic diagram of the added base station of the present invention; Fig.11The structure of the eccentric drive of the present invention is shown in FIG. Figure 1 ; Fig.12 The structure of the eccentric drive of the present invention is shown in FIG. Figure 2 ; Fig.13 It is a structural schematic diagram of the drive connection platform of the present invention; Fig.14 It is a structural schematic diagram of the pawl seat of the present invention.

[0017] In the figure: adding tube 1, device base 2, side support fixing seat 3, device adjustment seat 4, eccentric driver 5, adding base platform 6, inner arc seat 7, upper supporting rack seat 8, lower adjustment rack seat 9, adjustment rack 10, driving screw 11, opening 12, adjustment gear shaft 13, base 14, internal threaded cylinder 15, external limit ratchet 16, driving motor 17, eccentric driving platform 18, driving rod 19, connecting ball 20, driving connecting platform 21, pawl seat 22, driving pawl 23. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "middle", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Specific implementation method 1 like Figure 1 As shown, a pipe-roof permanent bonding process includes the following steps: S1: Pre-reinforcement of the tunnel floor; preparation of test pipes for water stopping and deflection data collection; S2: Mud and water balance pipe jacking: send mud and water to the excavation surface in front of the pipe jacking machine head to prevent mud and water from penetrating into the excavation surface; S3: Grouting water stop on the side wall; Grouting water stop on the side wall through the grouting holes reserved at the upper and lower ends of the side wall steel plate; S4: Steel pipe dismantling: After the pipe jacking is completed, the steel plate is removed and temporary support is provided for the pipeline; S5: Structural construction: reinforcement tying and concrete pouring; S6: Road surface paving is carried out after excavation of earthwork in the channel.

[0023] The working principle and beneficial effects of this embodiment are as follows: 4 test pipes are made in advance to collect water-stopping and offset data, and all-round high-pressure rotary jet reinforcement (MJS method piles) can also be used. The all-round high-pressure rotary jet technology is a pipe curtain permanent and temporary combined process that adapts to narrow spaces, large torque, and all-round swing spraying construction. Water-stop reinforcement method. Through the equipment's unique porous pipes and front-end slurry suction device, the surrounding soil is cut and destroyed by high-pressure jets to achieve pressurized transportation, injection, cutting of formations, mixing, mud discharge, and concentrated mud of the hardened material slurry; all completed in a unified manner. From slurry making and spraying to subsequent slurry discharge and mud and water treatment, an engineering construction chain is formed. Auxiliary flow and pressure data acquisition modules are used to achieve controllable construction process; The basic principle of mud-water balanced pipe jacking technology is to send mud-water with a certain concentration and specific gravity to the excavation surface in front of the pipe jacking machine head through the mud-water delivery system. The mud-water forms an impermeable mud film on the excavation surface to prevent the mud-water from penetrating into the excavation surface. At the same time, the mud-water pressure is adjusted to balance the groundwater pressure and soil pressure to achieve the purpose of stabilizing the excavation surface. When the pipe jacking machine head moves forward, the cutterhead cuts the soil. After the cut residual soil is fully mixed with the mud-water, it is transported to the ground mud-water separation equipment for treatment by the mud discharge system. The separated residual soil is transported away, and the mud-water is sent to the water delivery system for recycling. The pipe jacking accuracy is ≤50mm. Grouting watertightness on the side wall: Grouting holes are reserved at the upper and lower ends of the side wall steel plate. After the construction of two adjacent sections of the pipe curtain is completed, grouting watertightness on the side wall is carried out. The cement-water glass double liquid grouting material is used to completely seal the space between the side walls to achieve the watertightness effect. Steel pipe disassembly: The steel plate on the side wall of the pipeline is designed to be removable. After the pipe jacking is completed, the single 6m long and 1.6m wide steel plate will be dismantled. After the dismantling, temporary support will be required for the pipeline. Rebar binding: Be familiar with the drawings and check whether the specifications, shapes and quantities of the processed rebars are correct. Rebar binding personnel must be familiar with the structural construction drawings and reinforcement drawings, and be clear about the methods of each part. The fire wire used to bind the rebars should be cut according to the diameter of the tied rebars and straightened.

[0024] Concrete pouring: Before pouring concrete, the base slag, dirt, and water in the foundation pit should be removed. It is strictly forbidden to pour dry concrete mixture into the foundation pit with water. Before pumping concrete, cement slurry mixed according to the designed mix ratio or concrete prepared by half the aggregate should be used to lubricate the pipeline; Excavation and pavement in the tunnel: After the tunnel structure strength reaches the requirements, the soil in the tunnel can be excavated directly by an excavator or by adding water to pump out the silt; After the channel excavation is completed, the exposed surface will be decorated and renovated, and the road surface can be paved at the same time. Specific implementation method 2 like Figure 1 — Fig.14 As shown, a pipe-roof permanent bonding process, the S1 includes: S11: adding pipes by using a porous pipe rotating adding device and destroying the surrounding soil by high pressure jet cutting; S12: pressurizing and conveying the hardened material slurry, spraying, cutting the formation, mixing, draining mud, and concentrating the mud; S13: Through slurry preparation, slurry spraying, and subsequent slurry discharge and mud water treatment, an engineering construction chain is formed; S14: The construction process can be monitored by monitoring the auxiliary flow and pressure data.

[0026] The working principle and beneficial effects of this embodiment are as follows: by using a porous tube rotary adding device for the test tube or steel tube body to be added, and then by connecting the added tube body to different on-site construction equipment to pressurize the hardened material slurry for transportation, injection, cutting of formations, mixing, mud discharge, and concentrated mud; through slurry making, spraying, to subsequent slurry discharge and mud and water treatment, a complete on-site construction chain is formed; by monitoring the auxiliary flow and pressure data, the construction process can be monitored. Specific implementation method three like Figure 1 — Fig.14 As shown, a pipe-roof permanent bonding process, said S2 comprises: S21: Mix the mud and water to a set concentration and specific gravity; S22: The mud water is delivered to the excavation surface in front of the pipe jacking machine head through the mud water delivery system, and the mud water forms an impermeable mud film on the excavation surface; S23: By preventing mud and water from penetrating into the excavation surface, the mud and water pressure is adjusted to balance the groundwater pressure and soil pressure; S24: As the pipe jacking machine head moves forward, the cutter disc cuts the soil. The cut residual soil is fully mixed with mud and water, and then transported by the mud discharge system to the ground mud and water separation equipment for treatment. The separated residual soil is transported away, and the mud and water are sent to the water supply system for recycling.

[0028] The working principle and beneficial effects of this embodiment are as follows: the basic principle of the mud-water balanced pipe jacking process is to deliver mud-water adjusted to a certain concentration and specific gravity to the excavation surface in front of the pipe jacking head through a mud-water delivery system, and the mud-water forms an impermeable mud film on the excavation surface to prevent the mud-water from penetrating into the excavation surface. At the same time, the mud-water pressure is adjusted to balance the groundwater pressure and soil pressure to achieve the purpose of stabilizing the excavation surface; while the pipe jacking head moves forward, the cutter disc cuts the soil, and the cut residual soil is fully mixed with the mud-water, and then transported by the mud discharge system to the ground mud-water separation equipment for treatment, the separated residual soil is transported away, and the mud-water is then sent to the water delivery system for recycling, and the pipe jacking accuracy is ≤50mm. Specific implementation method four like Figure 1 — Fig.14 As shown, a pipe-roof permanent combination process, said S3 comprises: S31: Grouting holes are reserved at the upper and lower ends of the side wall steel plate. After the construction of the two adjacent pipe curtain sections is completed, grouting is performed on the side wall to stop water; S32: Use cement-water glass double liquid grouting material to completely seal the space between the side walls and complete water stopping.

[0030] The working principle and beneficial effects of this embodiment are as follows: grouting holes are reserved at the upper and lower ends of the side wall steel plate. After the construction of two adjacent sections of the pipe curtain is completed, the side wall is grouted to stop water, and cement-water glass double liquid grouting material is used to completely close the space in the side wall gap to achieve the water-stopping effect. Specific implementation method five like Figure 1 — Fig.14 As shown, a pipe-roof permanent bonding process, the S4 comprises: S41: The steel plate on the side wall of the pipeline adopts a detachable design; S42: After the pipe jacking construction is completed, the single 6m long and 1.6m wide steel plate will be removed to provide temporary support for the pipeline.

[0032] The working principle and beneficial effects of this embodiment are as follows: the pipeline side wall steel plate adopts a detachable design, which is convenient for combined installation, use and disassembly; after the jacking is completed, the single 6m long and 1.6m wide steel plate is removed, and after the removal, temporary support is required for the pipeline to prevent tilting and collapse. Specific implementation method 6 like Figure 1 — Fig.14 As shown, a pipe-roof permanent bonding process, the S5 comprises: S51: Familiarize yourself with the drawings and check the specifications, shapes and quantities of the processed steel bars; S52: Be familiar with the structural construction drawings and reinforcement drawings, and understand the different binding methods for different parts; S53: The burnt wire used to tie the steel bars should be cut according to the diameter of the steel bars to be tied and straightened.

[0034] The working principle and beneficial effects of this embodiment are as follows: first, let the construction personnel familiarize themselves with the on-site drawings, and require them to check whether the specifications, shapes, and quantities of the processed steel bars are correct; the steel bar tying personnel must be familiar with the structural construction drawings and reinforcement drawings, and clearly understand the methods of each part; the fire-burned wire for tying the steel bars should be cut according to the diameter of the tied steel bars, and straightened out. Specific implementation method seven like Figure 1 — Fig.14 As shown, a pipe-roof permanent bonding process, the S5 comprises: S54: Before pouring concrete, remove the slag, dirt and water in the foundation pit, and avoid pouring dry concrete mix into the foundation pit with water. S55: Before pumping concrete, use cement slurry mixed according to the designed mix ratio or concrete prepared with half the aggregate to lubricate the pipeline.

[0036] The working principle and beneficial effects of this embodiment are as follows: before pouring concrete, the base slag, dirt, and accumulated water in the foundation pit should be removed cleanly, and it is strictly forbidden to dump concrete dry mix into the foundation pit with accumulated water; before pumping concrete, cement slurry mixed according to the designed mix ratio or concrete lubricated pipes prepared by half the aggregate should be used. Specific implementation method eight like Figure 1 — Fig.14 As shown, a pipe-roof permanent bonding process, the S6 comprises: S61: After the tunnel structure strength reaches the required level, the soil in the tunnel is excavated directly by an excavator or by adding water and pumping out the sludge; S62: After the excavation of the channel is completed, the exposed surface will be decorated and renovated, and the road surface can be paved at the same time.

[0038] The working principle and beneficial effects of this embodiment are: excavation of earthwork in the channel and paving of the road surface; after the tunnel structure strength reaches the requirement, the soil in the channel is excavated, which can be directly excavated by an excavator or by adding water to pump out the sludge; after the channel excavation is completed, the exposed surface is decorated and renovated, and the road surface can be paved at the same time. Specific implementation method nine like Figure 1 — Fig.14 As shown, a pipe curtain permanent combination process, a porous pipe rotary adding device comprises an adding pipe 1, a plurality of adding pipes 1 are provided, the plurality of adding pipes 1 are plugged and added into a side support fixing seat 3 and an adding base platform 6, the side support fixing seat 3 and the adding base platform 6 are fixed on a device adjustment seat 4, an eccentric driver 5 on the device adjustment seat 4 drives the adding base platform 6 to rotate the threaded engagement to enable the adding pipe 1 to be added; the device adjustment seat 4 is connected in an arc-shaped sliding manner and locked on the device base 2; the bottom end of the adding pipe 1 is pointed, and a plurality of openings 12 are evenly provided on the bottom end of the adding pipe 1.

[0040] The working principle and beneficial effects of this embodiment are as follows: after the addition of the test tube is completed, multiple addition tubes 1 for use are added, and the multiple addition tubes 1 are all plugged and added into the side support fixing seat 3 and the addition base platform 6. The side support fixing seat 3 plays a role in supporting and transporting multiple longer addition tubes 1. The addition tube 1 is added to the addition base platform 6, and the eccentric driver 5 drives the addition base platform 6 to continuously rotate the ratchet, so that the addition base platform 6 continuously adds multiple addition tubes 1 forward through threaded cooperation. Because the bottom end of the addition tube 1 is pointed, the bottom end of the addition tube 1 is evenly provided with multiple openings 12, which can achieve the effect of automatically adding multiple addition tubes 1 to a specified depth under high pressure. At the same time, multiple addition tubes 1 are used in combination with different equipment to pressurize the hardened material slurry deep inside to convey, spray, cut the formation, mix, discharge mud, and concentrate the mud, thereby solving the problems of the original technical construction being cumbersome, low construction efficiency, inability to add the steel pipe that needs to be added as a whole, and inability to add different pipe bodies as a whole. Specific implementation method 10 like Figure 1 — Fig.14 As shown, a pipe-roof permanent combination process is provided, wherein an inner arc seat 7 is provided in the device base 2, an arc-shaped sliding device adjustment seat 4 is provided on the inner arc seat 7, an adjusting gear shaft 13 is fixed to the rear end of the device adjustment seat 4, the device adjustment seat 4 is rotatably connected to the inner arc seat 7 through the adjusting gear shaft 13, the upper and lower ends of the adjusting gear shaft 13 respectively mesh with the rack and the adjusting rack 10 in the upper supporting rack seat 8 of the transmission, the adjusting rack 10 slides transversely in the lower adjusting rack seat 9, the adjusting rack 10 is rotatably connected to the driving screw 11, and the driving screw 11 is connected to the side end of the lower adjusting rack seat 9 through threaded cooperation.

[0042] The working principle and beneficial effects of this embodiment are as follows: by rotating the driving screw 11, the adjusting rack 10 is displaced in the lower adjusting rack seat 9, and the adjusting gear shaft 13 is rotated between the rack in the upper supporting rack seat 8 and the adjusting rack 10, and the device adjustment seat 4 is offset and rotated on the inner arc seat 7, so as to adjust the adding angle of the added adding pipe 1, and adapt to the different adding angles of the adding pipe 1 used at the construction site. Specific implementation method eleven: like Figure 1 — Fig.14 As shown, a permanent and temporary combination process of a pipe-roof, the added base platform 6 includes a base platform 14, an internal threaded cylinder 15 and an external limit ratchet 16, the base platform 14 is fixed to the lower end of the device adjustment seat 4, a plurality of internal threaded cylinders 15 are rotatably arranged in the base platform 14, a plurality of external limit ratchet wheels 16 are fixed to the outer wall of the threaded cylinder 15, and the external limit ratchet wheels 16 are limitedly rotated in the base platform 14; The inner wall of the threaded barrel 15 is connected to the adding pipe 1 through threaded fitting.

[0044] The working principle and beneficial effects of this embodiment are as follows: the base 14 is fixed at the lower end of the device adjustment seat 4, and multiple internal threaded tubes 15 are limited and rotated in the base 14 by multiple external limit ratchets 16. The inner wall of the threaded tube 15 is connected to the addition tube 1 through threaded cooperation, thereby driving the multiple internal threaded tubes 15 to rotate, and the effect of driving the addition tube 1 to rotate for addition can be achieved. By adapting to different equipment used at the construction site, multiple addition tubes 1 can be used in combination with different equipment at the same time to pressurize the hardened material slurry deep inside, convey, spray, cut the formation, mix, discharge mud, and concentrate the mud. Specific implementation twelve: like Figure 1 — Fig.14 As shown, a permanent and temporary combination process of tube curtain is The eccentric driver 5 includes a driving motor 17, which is fixed to the upper end of the device adjustment seat 4, and the transmission shaft of the driving motor 17 is fixed to the eccentric position of the eccentric driving platform 18. A driving rod 19 is fixed to the eccentric driving platform 18, and a connecting ball 20 is fixed to the lower end of the driving rod 19. The driving rod 19 is hinged in a driving connecting platform 21 through the connecting ball 20. The driving connecting platform 21 slides longitudinally in the device adjustment seat 4, and a plurality of ratchet seats 22 are fixed to the lower end of the driving connecting platform 21. A plurality of driving pawls 23 are rotatably connected in the pawl seat 22 , and the driving pawls 23 are inserted in the outer limit ratchet 16 .

[0046] The working principle and beneficial effects of this embodiment are as follows: the driving motor 17 is fixed to the upper end of the device adjustment seat 4, and the transmission shaft of the driving motor 17 drives the eccentric driving platform 18 to rotate. Because it is at the eccentric position, the driving rod 19 and the connecting ball 20 can be driven to reciprocate up and down. The driving rod 19 is hinged in the driving connecting platform 21 through the connecting ball 20, so that the driving connecting platform 21 reciprocates and longitudinally limits the sliding in the device adjustment seat 4, and then the multiple pawl seats 22 at the lower end of the driving connecting platform 21 reciprocate and longitudinally limit the displacement; and then in the downward process of the pawl seat 22, the pawl seat 22 is rotated to connect multiple driving pawls. 23 is meshed with the outer limit ratchet 16, thereby driving multiple internal threaded tubes 15 to rotate. During the upward movement of the pawl seat 22, multiple driving pawls 23 are connected by rotating inside the pawl seat 22, and the driving pawls 23 are disengaged from the meshing outer limit ratchet 16, and this reciprocating process is used to achieve the synchronous rotation of multiple internal threaded tubes 15, thereby achieving the effect of driving the addition pipe 1 to rotate for addition. By adapting to different equipment used at the construction site, multiple addition pipes 1 can be used in combination with different equipment at the same time to pressurize the hardened material slurry deep inside, convey, spray, cut the formation, mix, discharge mud, and concentrate the mud.

[0047] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A pipe-roof permanent bonding process, characterized in that: The following steps are involved: S1: Pre-reinforcement of the tunnel floor; Prepare the test tube in advance for water stop and deflection data collection; S2: Mud-water balance pipe jacking; Send muddy water to the excavation surface in front of the pipe jacking machine head to prevent muddy water from penetrating into the excavation surface; S3: Grouting water stop on the side wall; Grouting water stop on the side wall through the grouting holes reserved at the upper and lower ends of the side wall steel plate; S4: Steel pipe dismantling: After the pipe jacking is completed, the steel plate is removed and temporary support is provided for the pipeline; S5: Structural construction: reinforcement tying and concrete pouring; S6: Road surface paving is carried out after excavation of earthwork in the channel.

2. A pipe-roof permanent bonding process according to claim 1, characterized in that: The S1 includes: S11: adding pipes by using a porous pipe rotating adding device and destroying the surrounding soil by high pressure jet cutting; S12: pressurizing and conveying the hardened material slurry, spraying, cutting the formation, mixing, draining mud, and concentrating the mud; S13: Through slurry preparation, slurry spraying, and subsequent slurry discharge and mud water treatment, an engineering construction chain is formed; S14: The construction process can be monitored by monitoring the auxiliary flow and pressure data.

3. According to claim 1, the permanent connection process of the tube roof is characterized by: The S2 includes: S21: Mix the mud and water to a set concentration and specific gravity; S22: The mud water is delivered to the excavation surface in front of the pipe jacking machine head through the mud water delivery system, and the mud water forms an impermeable mud film on the excavation surface; S23: By preventing mud and water from penetrating into the excavation surface, the mud and water pressure is adjusted to balance the groundwater pressure and soil pressure; S24: The cutter head cuts the soil while the pipe jacking machine head moves forward. The cut residual soil is fully mixed with mud and water, and then transported to the ground mud and water separation equipment for treatment by the mud discharge system. The separated residual soil is transported away, and the mud and water are sent to the water supply system for recycling.

4. The permanent connection process of pipe-roof according to claim 1 is characterized in that: The S3 includes: S31: Grouting holes are reserved at the upper and lower ends of the side wall steel plate. After the construction of the two adjacent pipe curtain sections is completed, grouting is performed on the side wall to stop water; S32: Use cement-water glass double liquid grouting material to completely seal the space between the side walls and complete water stopping.

5. The pipe-roof permanent bonding process according to claim 1 is characterized in that: The S4 includes: S41: The steel plate on the side wall of the pipeline adopts a detachable design; S42: After the pipe jacking construction is completed, the single 6m long and 1.6m wide steel plate will be removed to provide temporary support for the pipeline.

6. The permanent connection process of pipe-roof according to claim 1 is characterized in that: The S5 comprises: S51: Familiarize yourself with the drawings and check the specifications, shapes and quantities of the processed steel bars; S52: Be familiar with the structural construction drawings and reinforcement drawings, and understand the different binding methods for different parts; S53: The burnt wire used to tie the steel bars should be cut according to the diameter of the steel bars to be tied and straightened.

7. The pipe-roof permanent bonding process according to claim 1 is characterized in that: The S5 comprises: S54: Before pouring concrete, remove the slag, dirt and water in the foundation pit, and avoid pouring dry concrete mix into the foundation pit with water. S55: Before pumping concrete, use cement slurry mixed according to the designed mix ratio or concrete prepared with half the aggregate to lubricate the pipeline.

8. The pipe-roof permanent bonding process according to claim 1 is characterized in that: The S6 comprises: S61: After the tunnel structure strength reaches the required level, the soil in the tunnel is excavated directly by an excavator or by adding water and pumping out the sludge; S62: After the excavation of the channel is completed, the exposed surface will be decorated and renovated, and the road surface can be paved at the same time.

9. The pipe-roof permanent bonding process according to claim 2 is characterized in that: The porous tube rotary adding device comprises an adding tube (1), a plurality of the adding tubes (1) are provided, the plurality of adding tubes (1) are all inserted and added into a side support fixing seat (3) and an adding base platform (6), the side support fixing seat (3) and the adding base platform (6) are both fixed on a device adjustment seat (4), an eccentric driver (5) on the device adjustment seat (4) drives the adding base platform (6) to rotate and thread-match so that the adding tube (1) is added; the device adjustment seat (4) is connected to and locked on the device base (2) in an arc-shaped sliding manner; the bottom end of the adding tube (1) is pointed, and a plurality of openings (12) are evenly provided on the bottom end of the adding tube (1).

10. A pipe-roof permanent bonding process according to claim 9, characterized in that: The device base (2) is provided with an inner arc seat (7), and an device adjustment seat (4) is provided on the inner arc seat (7) in an arc-shaped sliding manner. An adjustment gear shaft (13) is fixed to the rear end of the device adjustment seat (4). The device adjustment seat (4) is rotatably connected to the inner arc seat (7) through the adjustment gear shaft (13). The upper and lower ends of the adjustment gear shaft (13) respectively mesh with the rack in the upper support rack seat (8) and the adjustment rack (10). The adjustment rack (10) slides in a transverse limited position in the lower adjustment rack seat (9). The adjustment rack (10) is rotatably connected to the driving screw (11), and the driving screw (11) is connected to the side end of the lower adjustment rack seat (9) through threaded engagement. The adding base platform (6) comprises a base (14), an internally threaded cylinder (15) and an externally limited ratchet (16); the base (14) is fixed to the lower end of the device adjustment seat (4); a plurality of internally threaded cylinders (15) are rotatably arranged in the base (14); a plurality of externally limited ratchets (16) are fixed to the outer wall of the threaded cylinder (15); and the externally limited ratchet (16) is limitedly rotated in the base (14); The inner wall of the threaded barrel (15) is connected to the adding pipe (1) through threaded fitting; The eccentric driver (5) comprises a driving motor (17), the driving motor (17) being fixed to the upper end of the device adjustment seat (4), the driving shaft of the driving motor (17) being fixed to the eccentric position of the eccentric driving platform (18), a driving rod (19) being fixed to the eccentric driving platform (18), a connecting ball (20) being fixed to the lower end of the driving rod (19), the driving rod (19) being hinged in the driving connecting platform (21) through the connecting ball (20), the driving connecting platform (21) being longitudinally limited and slidable in the device adjustment seat (4), and a plurality of ratchet seats (22) being fixed to the lower end of the driving connecting platform (21); A plurality of driving pawls (23) are rotatably connected inside the pawl seat (22), and the driving pawls (23) are inserted into the outer limit ratchet (16).

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