Method for reinforcing and enhancing surrounding rock under excavation disturbance of tunnel in cold region

Abstract

The invention relates to the field of specific concrete production, and discloses a surrounding rock reinforcing and enhancing method under excavation disturbance of a tunnel in a cold region. The method comprises the following steps that S1, concrete is mixed, and meanwhile a coagulant with the corresponding proportion is proportioned and placed into the concrete; s2, the proportioned concrete enters an auxiliary device to be subjected to earlier-stage treatment, and the initial spraying temperature is reached; s3, warm water maintenance is carried out, and meanwhile observation is carried out; s4, the dried concrete is detected, and meanwhile defect checking and leak repairing are carried out. Through the auxiliary device and simple operation, overall operation and construction are facilitated, meanwhile, the strength of the overall concrete can be enhanced, engineering implementation is guaranteed, the curing space in a closed space is guaranteed, internal stress is reduced, and the strength of the concrete is guaranteed; and meanwhile, the injection requirement is met.

Description

Technical Field

[0001] The invention relates to the field of specific concrete production, and in particular to a method for reinforcing and enhancing surrounding rock under disturbance caused by tunnel excavation in cold regions. Background Art

[0002] At present, the rapid development of liquid setting agents has increased the accelerating effect of liquid setting agents at lower temperatures. Especially in mountainous areas with high altitudes and low temperatures, the use of liquid setting agents has a certain effect. Liquid setting agents can accelerate the setting of cement at relatively low temperatures, but the existing setting agents are not well mixed with concrete during use. At the same time, there are a lot of impurity gases inside, which leads to the setting time not meeting the requirements and the rebound of shotcrete is high, which leads to low production efficiency and increased costs. Summary of the invention

[0003] In order to solve the technical problem of poor effect, the present invention provides a method for reinforcing and strengthening surrounding rock under disturbance caused by tunnel excavation in cold regions.

[0004] The present invention is implemented by the following technical solution: a method for reinforcing surrounding rock under disturbance caused by tunnel excavation in cold regions, comprising the following steps: S1: Mix concrete and add a corresponding proportion of coagulant into the concrete; S2: Place the proportioned concrete into the auxiliary device for preliminary treatment to reach the initial injection temperature; S3: Carry out warm water curing and observation at the same time; S4: Test the dry concrete and check for any deficiencies and fill any gaps.

[0005] As a further improvement of the above solution, the initial spraying temperature is between 20 and 60 degrees Celsius on the anchor cable tray.

[0006] As a further improvement of the above scheme, the auxiliary device includes: a base box, in which a plurality of heating tubes are arranged; a stabilization box, which is fixedly connected to the upper side of the base box, and a power mechanism is arranged in the stabilization box; a vibration box, which is arranged on the stabilization box, and an actuator is arranged in the vibration box, the actuator is transmission-connected to the power mechanism, and the output end of the actuator is connected to the base box; an injection mechanism, which is arranged on one side of the base box, and the input end of the injection mechanism is connected to the base box.

[0007] As a further improvement of the above scheme, the power mechanism includes: a power box, which is fixedly connected in a stabilizing box, and a plurality of motors are fixedly connected in the power box, and the output end of the motor is transmission-connected to a transmission located in the power box; a transmission component 2, which is rotationally connected to the stabilizing box, and one end of the transmission component 2 is transmission-connected to the output end of the transmission, and the other end of the transmission component 2 is transmission-connected to a transmission component 1 through a spline transmission, and the transmission component 1 is connected to the actuator; a transmission component 3, which is transmission-connected to the output end of the transmission, and the other end of the transmission component 3 is transmission-connected to a rotating rod, and a plurality of impact balls are fixedly connected to the rotating rod, and the impact balls are in contact with the vibration box; a transmission component 4, one end of which is transmission-connected to the output end of the transmission, and the other end of the transmission component 4 is transmission-connected to an air supply unit through a spline transmission, and a plurality of air supply units are provided.

[0008] As a further improvement of the above scheme, the air supply unit includes: a transfer box, which is fixedly connected to the stabilization box, and the transmission component four is rotatably connected to the transfer box; a rotating circle two, which is rotatably sleeved on the top of the transfer box, and the middle of the rotating circle two is fixedly connected with a transmission shaft, and the outer side of the transmission shaft is connected with a transmission cylinder through a spline transmission, and the transmission cylinder is transmission connected to the transmission component four; a volume box, which is arranged in a vibration box, and one side of the volume box is rotatably connected with a rotating circle one, and the rotating circle one and the rotating circle two are both connected with accompanying circles, and a follower tube is connected between the two accompanying circles through a spline, and one end of the follower tube is connected to multiple dispersion tubes.

[0009] As a further improvement of the above scheme, the actuator includes: an integral box, which is arranged on the top of the vibration box, a conveying box is arranged in the integral box, one end of the conveying box is connected to a guide cylinder located in the integral box, and one end of the guide cylinder is connected to a loading cylinder extending to the outside of the vibration box; a threaded rod, which is rotatably sleeved in the conveying box, and one end of the conveying box is connected to a transmission assembly for transmission; a transfer pipe, one end of which is connected to the conveying box, and the other end of the transfer pipe is connected to the volume box; a plurality of vibration pumps are provided, the vibration pumps are fixedly connected to the vibration box, and the vibration end of the vibration pump extends into the conveying box; a filter box, which is fixedly connected in the vibration box, one end of the vibration box is connected to an air pipe connected to the integral box, and one side of the filter box is connected to an air pipe extending to the outside of the vibration box; a discharge pipe, one end of which is connected to the volume box, and the other end is connected to the base box.

[0010] As a further improvement of the above scheme, one end of the transfer box is connected to an air duct, the top of the power box is fixedly connected to a hydraulic cylinder fixedly connected to the vibration box, the bottom of the vibration box is provided with an impact groove, and the middle of the integral box is connected to a discharge pipe extending to the outside of the vibration box.

[0011] As a further improvement of the above scheme, the injection mechanism includes: a pump body, whose input end is connected to the base box, and the output end of the pump body is connected to the packaging tube; an anchor, one end of which is connected to the packaging tube, and the other end is connected to a slurry stop strip, and the slurry stop strip is connected to a slurry stop plug; a cable body, which is connected to the slurry stop plug, the outside of the cable body is connected to an anchor and an anchor cable tray, and one end of the cable body is connected to a grouting head.

[0012] As a further improvement of the above solution, a plurality of sensors are connected to the stabilizing box and the vibration box, a cleaning pipe is connected to one side of the base box, and a sewage pipe is connected to one side of the conveying box.

[0013] As a further improvement of the above solution, a symmetrically arranged partition box is arranged in the base box, and a monitor connected to the heating tube is connected in the partition box.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through auxiliary devices and relatively simple operation, the overall operation and construction are convenient, and at the same time, the strength of the overall concrete can be enhanced to ensure the implementation of the project.

[0015] 2. By vibrating and disturbing the concrete in different ways, the penetration of the accelerating setting agent is ensured, and at the same time, the gas inside the concrete is replaced to ensure the space for solidification in a confined space, reduce internal stress, ensure the strength of the concrete, and at the same time meet the needs of spraying.

[0016] 3. Through the mutual cooperation between multiple devices, continuous spraying or grouting can be carried out stably to ensure the overall stability of the construction, facilitate cleaning and operation, and improve the overall construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional schematic diagram of the present invention; Figure 3 It is a left side cross-sectional schematic diagram of the present invention; Figure 4 It is a partial left side cross-sectional schematic diagram of the present invention; Figure 5 It is a schematic diagram of the main view of the air supply unit; Figure 6 It is a schematic cross-sectional view of the air supply unit from the left; Figure 7 Schematic diagram of the gas supply unit structure.

[0018] Description of main symbols: 01. Base box; 02. Stability box; 03. Vibration box; 04. Loading barrel; 05. Transmission assembly 1; 07. Feeding tube; 11. Guide cylinder; 12. Threaded rod; 13. Air pipe; 14. Overall box; 15. Transport box; 16. Transfer pipe; 17. Transmission assembly 2; 18. Packaging tube; 19. Stop grout plug; 20. Anchor cable tray; 21. Grouting head; 22. Anchor; 23. Cable body; 24. Stop grout strip; 25. Anchoring; 26. Pump body; 27. Heating pipe; 28. power box; 29. ​​transmission; 30. transmission component three; 31. motor; 32. rotating rod; 33. impact ball; 34. rotating circle one; 35. volume box; 36. vibration pump; 37. ventilation pipe; 38. discharge pipe; 39. rotating circle two; 40. transfer box; 41. partition box; 42. transmission component four; 43. monitor; 44. transfer cylinder; 45. transfer shaft; 46. follower pipe; 47. filter box; 48. dispersion pipe; 50. accompanying circle. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0020] Please combine Figure 1-7 , The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions includes the following steps: S1: Mix concrete and place a coagulant of corresponding proportion into the concrete; S2: Place the mixed concrete into the auxiliary device for preliminary treatment to reach the initial injection temperature; S3: Carry out warm water curing and observe at the same time; S4: Test the dry concrete and check for deficiencies and make up for any gaps.

[0021] The initial spraying temperature is between 20 and 60 degrees Celsius on the anchor tray.

[0022] The auxiliary device includes: a base box 01, in which a plurality of heating tubes 27 are arranged, and the base box 01 provides necessary support and certain flow guidance; a stabilizing box 02, which is fixedly connected to the upper side of the base box 01, and a power mechanism is arranged in the stabilizing box 02, and the stabilizing box 02 performs space limitation, and the power mechanism provides necessary power; a vibration box 03, which is arranged on the stabilizing box 02, and an actuator is arranged in the vibration box 03, and the actuator is transmission-connected to the power mechanism, and the output end of the actuator is connected to the base box 01, and the vibration box 03 performs certain space limitation, and the actuator performs preliminary work; and a spraying mechanism, which is arranged on one side of the base box 01, and the input end of the spraying mechanism is connected to the base box 01, and the spraying mechanism sprays the finished product.

[0023] The power mechanism includes: a power box 28, which is fixedly connected to the stable box 02, and a plurality of motors 31 are fixedly connected to the power box 28. The output end of the motor 31 is transmission-connected to the transmission 29 located in the power box 28. The power box 28 is spatially separated, and the motor 31 provides power, which is then controlled and output by the transmission 29 to achieve different outputs in multiple directions. A transmission component 17 is rotationally connected to the stable box 02, one end of the transmission component 17 is transmission-connected to the output end of the transmission 29, and the other end of the transmission component 17 is connected to the transmission component 105 through a spline transmission. The transmission component 105 is connected to the actuator, and the transmission component 17 transmits power. Component one 05 performs further transmission, transmission component three 30, which is transmission-connected to the output end of the transmission 29, and the other end of the transmission component three 30 is transmission-connected to a rotating rod 32, and a plurality of impact balls 33 are fixedly connected to the rotating rod 32, and the impact balls 33 are in contact with the vibration box 03. The transmission component three 30 performs power transmission, so that the rotating rod 32 rotates, and further drives the impact balls 33 to perform periodic rotation. Transmission component four 42, one end of which is transmission-connected to the output end of the transmission 29, and the other end of the transmission component four 42 is connected to an air supply unit through a spline transmission, and a plurality of air supply units are provided. The transmission component four 42 performs power transmission, so that the air supply unit performs necessary actions.

[0024] The air supply unit includes: a transfer box 40, which is fixedly connected to the stabilizing box 02, a transmission component 42 is rotatably connected to the transfer box 40, and is rotatably sleeved on the top of the transfer box 40 through a rotating circle 2 39, and a transmission shaft 45 is fixedly connected to the middle of the rotating circle 2 39, and a transmission cylinder 44 is connected to the outer side of the transmission shaft 45 through a spline transmission, and the transmission cylinder 44 is transmission-connected to the transmission component 42, and the transmission of the transmission cylinder 44 and the transmission shaft 45 allows the rotating circle 2 39 to rotate, and a volume box 35 is arranged in the vibration box 03, and one side of the volume box 35 rotates. The rotating circle 1 34 is dynamically connected, and the rotating circle 1 34 and the rotating circle 2 39 are both connected to the accompanying circle 50. A follower tube 46 is connected between the two accompanying circles 50 through a spline, and one end of the follower tube 46 is connected to a plurality of dispersion tubes 48. The rotating rotating circle 2 39 and the follower tube 46 can drive the rotating circle 1 34 to rotate. At the same time, during the rotation of the transmission 29 and the rotating circle 1 34, the position of the follower tube 46 is changed, so that one end of the follower tube 46 enters the volume box 35 to different depths, and different intake positions are achieved with the rotation.

[0025] The actuator includes: an integral box 14, which is arranged on the top of the vibration box 03, a conveying box 15 is arranged in the integral box 14, one end of the conveying box 15 is connected to a guide cylinder 11 located in the integral box 14, one end of the guide cylinder 11 is connected to a loading cylinder 04 extending to the outside of the vibration box 03, the integral box 14 is used to define the internal space, the loading cylinder 04 is used to feed, the guide cylinder 11 is used for guiding, the threaded rod 12 forces the raw materials in the conveying box 15 to move, the threaded rod 12 is rotatably sleeved in the conveying box 15, one end of the conveying box 15 is connected to the transmission component 05, and the transfer pipe 16 is connected to the conveying box 15 at one end, and the other end of the transfer pipe 16 is connected to the container The storage box 35 is connected, the transfer pipe 16 is used to guide the material, and a plurality of vibration pumps 36 are provided. The vibration pump 36 is fixedly connected to the vibration box 03, and the vibration end of the vibration pump 36 extends into the conveying box 15. The vibration pump 36 vibrates to discharge the original excess gas in the material. The filter box 47 is fixedly connected in the vibration box 03. One end of the vibration box 03 is connected to the air pipe 13 connected to the overall box 14, and one side of the filter box 47 is connected to the air pipe 37 extending to the outside of the vibration box 03. The filter box 47 performs filtering. The discharge pipe 07 has one end connected to the volume box 35 and the other end connected to the base box 01. The discharge pipe 07 discharges the material to realize the transportation of the material.

[0026] One end of the transfer box 40 is connected to an air duct, the top of the power box 28 is fixedly connected to a hydraulic cylinder fixedly connected to the vibration box 03, the bottom of the vibration box 03 is provided with an impact groove, the middle of the integral box 14 is connected to a discharge pipe 38 extending to the outside of the vibration box 03, the impact groove facilitates the impact of the impact ball 33, the air duct is connected to the external pipeline to conduct the gas, and the hydraulic cylinder performs partial adjustment.

[0027] The injection mechanism includes: a pump body 26, whose input end is connected to the base box 01, the output end of the pump body 26 is connected to the packaging tube 18, the pump body 26 is used for pumping, an anchor 25, one end of which is connected to the packaging tube 18, and the other end is connected to the stop slurry strip 24, the stop slurry strip 24 is connected to the stop slurry plug 19, a cable body 23, which is connected to the stop slurry plug 19, the outer side of the cable body 23 is connected to the anchor 22 and the anchor cable tray 20, one end of the cable body 23 is connected to the grouting head 21, after being transported by the anchor 25 and the cable body 23, injection is performed through the grouting head 21, and auxiliary work is also performed through the anchor 22 and the cable body 23.

[0028] Multiple sensors are connected to the stabilization box 02 and the vibration box 03, a cleaning pipe is connected to one side of the base box 01, and a sewage pipe is connected to one side of the conveying box 15. The sensors measure multiple data, and the cleaning pipe and the sewage pipe facilitate the discharge of the sewage cleaned subsequently.

[0029] A symmetrically arranged partition box 41 is provided in the base box 01, and a monitor 43 connected to the heating tube 27 is connected in the partition box 41. The partition box 41 is used for spatial isolation, and the monitor 43 is used for control and detection needs.

[0030] The implementation principle of the embodiment of the present application is: When working, the mixed raw materials and quick-setting agent enter the guide cylinder 11 through the loading cylinder 04, and then enter the conveying box 15, and are forced to move through the threaded rod 12. During the movement, the vibration pump 36 works, causing the internal gas to vibrate and evaporate, and then enter the filter box 47 after passing through the air vent 13. After filtering, it is discharged through the air vent 37. The raw materials after vibration degassing enter the volume box 35 through the transfer pipe 16. At this time, the power provided by the motor 31 and the speed change of the transmission 29 make the transmission cylinder 44, the transmission shaft 45, the rotating circle 239, and the rotating circle The first 34 and the follower tube 46 rotate. During the rotation of the follower tube 46, they move synchronously, so that the follower tube 46 extends to different depths in the volume box 35. The outside world supplies gas to the transfer box 40, and the gas enters the volume box 35 through the follower tube 46 and the dispersion tube 48, adding a certain amount of special gas to the raw material to ensure subsequent solidification and reduce the internal stress inside the raw material. The gasified raw material enters the base box 01 through the feed pipe 07, and then is heated by the heating tube 27 to make the raw material reach the initial temperature, providing a certain amount of energy for the initial solidification development and ensuring the solidification effect. The heated raw material is pumped by the pump body 26, and then enters the designated position through the packaging tube 18, the anchor 25, the cable body 23 and the grouting head 21 to achieve addition.

[0031] During the working process, the transmission component 3 30, the rotating rod 32 and the impact ball 33 are rotated through the transmission of the transmission 29, and the impact ball 33 intermittently impacts the vibration box 03, so that the gas is mixed more evenly to ensure the subsequent work.

[0032] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A method for strengthening surrounding rock under disturbance caused by tunnel excavation in cold regions, characterized in that: The following steps are involved: S1: Mix concrete and add a corresponding proportion of coagulant into the concrete; S2: Place the proportioned concrete into the auxiliary device for preliminary treatment to reach the initial injection temperature; S3: Carry out warm water curing and observation at the same time; S4: Test the dry concrete and check for any deficiencies and fill any gaps.

2. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 1 is characterized in that: The initial spraying temperature is between 20 and 60 degrees Celsius on the anchor cable tray.

3. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 1 is characterized in that: The auxiliary device comprises: A base box, in which a plurality of heating tubes are arranged; A stabilizing box, which is fixedly connected to the upper side of the base box, and a power mechanism is arranged in the stabilizing box; A vibration box is arranged on the stabilizing box, wherein an actuator is arranged in the vibration box, the actuator is transmission-connected with the power mechanism, and an output end of the actuator is connected with the base box; The spraying mechanism is arranged on one side of the base box, and the input end of the spraying mechanism is connected to the base box.

4. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 3 is characterized in that: The power mechanism comprises: A power box, which is fixedly connected in the stability box, wherein a plurality of motors are fixedly connected in the power box, and the output ends of the motors are transmission-connected to a transmission located in the power box; Transmission assembly 2 is rotatably connected to the stabilizer box, one end of the transmission assembly 2 is transmission-connected to the output end of the transmission, the other end of the transmission assembly 2 is connected to the transmission assembly 1 through a spline transmission, and the transmission assembly 1 is connected to the actuator; A transmission component three is transmission-connected to the output end of the transmission, and the other end of the transmission component three is transmission-connected to a rotating rod, and a plurality of impact balls are fixedly connected to the rotating rod, and the impact balls are in contact with the vibration box; A transmission component four has one end drivingly connected to the output end of the transmission, and the other end of the transmission component four is connected to an air supply unit via a spline transmission, and a plurality of air supply units are provided.

5. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 4 is characterized in that: The air supply unit comprises: A transfer box, which is fixedly connected to the stabilizing box, and the transmission assembly 4 is rotatably connected to the transfer box; The second rotating circle is rotatably sleeved on the top of the transfer box, the middle of the second rotating circle is fixedly connected with a transmission shaft, the outer side of the transmission shaft is connected with a transmission cylinder through a spline transmission, and the transmission cylinder is transmission-connected to the transmission assembly four; A volume box is arranged in a vibration box, one side of the volume box is rotatably connected to a rotating circle one, both the rotating circle one and the rotating circle two are connected to accompanying circles, a follower tube is connected between the two accompanying circles through a spline, and one end of the follower tube is connected to a plurality of dispersion tubes.

6. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 1, characterized in that: The executive mechanism comprises: An integral box is arranged on the top of the vibration box, a conveying box is arranged in the integral box, one end of the conveying box is connected to a guide cylinder located in the integral box, and one end of the guide cylinder is connected to a loading cylinder extending to the outside of the vibration box; A threaded rod is rotatably sleeved in a conveying box, one end of which is in driving connection with a transmission assembly; A transfer pipe, one end of which is connected to the delivery box, and the other end of which is connected to the volume box; A vibration pump, which is provided in plurality, wherein the vibration pump is fixedly connected to the vibration box, and the vibration end of the vibration pump extends into the conveying box; A filter box is fixedly connected in the vibration box, one end of the vibration box is connected to a ventilation pipe connected to the overall box, and one side of the filter box is connected to a ventilation pipe extending to the outside of the vibration box; A feed pipe has one end connected to the volume box and the other end connected to the base box.

7. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 1, characterized in that: One end of the transfer box is connected to an air duct, the top of the power box is fixedly connected to a hydraulic cylinder fixedly connected to the vibration box, the bottom of the vibration box is provided with an impact groove, and the middle of the integral box is connected to a discharge pipe extending to the outside of the vibration box.

8. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 1, characterized in that: The injection mechanism comprises: A pump body, the input end of which is connected to the base box, and the output end of the pump body is connected to a packaging tube; An anchor, one end of which is connected to the packaging tube, and the other end is connected to a slurry-stopping strip, and the slurry-stopping strip is connected to a slurry-stopping plug; The cable body is connected to the grouting stopper, the outer side of the cable body is connected to an anchor and an anchor cable tray, and one end of the cable body is connected to a grouting head.

9. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 1, characterized in that: A plurality of sensors are connected to the inside of the stabilizing box and the vibrating box, a cleaning pipe is connected to one side of the base box, and a sewage pipe is connected to one side of the conveying box.

10. The surrounding rock reinforcement method under the disturbance of tunnel excavation in cold regions as claimed in claim 1, characterized in that: The base box is provided with symmetrically arranged partition boxes, and the partition boxes are connected with a monitor connected with the heating tube.

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