Method for treating lining cavity through damage-free water cutting and grouting

Abstract

The invention discloses a method for treating a lining cavity through non-damage water cutting and grouting, and the method comprises the following steps: S1, obtaining the characteristic parameters of the cavity at the back of a tunnel lining through a ground penetrating radar, and drawing a three-dimensional pattern of the lining in a cavity region; s2, water cutting pressure is determined according to the lining strength, a water cutting contour line is determined according to the cavity area, and water cutting time is calculated according to the lining thickness of each point of the water cutting contour line; s3, water cutting is conducted according to the set water cutting pressure and water cutting time, a laser range finder is started for real-time range finding, and a three-dimensional graph of the cutting depth and path of the cavity area is drawn; s4, loose lining concrete in the cavity area is broken and removed; and S5, grouting filling is conducted on the cavity area. The device has the advantages that the water jet cutting depth and path are measured in real time, and it is guaranteed that cutting does not damage other structures; the cutting depth and the cutting path are measured in real time, so that the cutting size can be accurately controlled, and the cutting quality can be ensured; the water cutting efficiency is high, smoke is reduced, and environmental protection is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of water cutting, and in particular relates to a method for treating lining voids by water cutting and grouting without causing any damage. Background Art

[0002] With the rapid development of major infrastructure construction such as high-speed railways, rapid passenger dedicated lines, heavy-duty railways, highways, urban subways, etc. in various countries around the world, my country has a vast territory and needs to build a large number of tunnels in mountainous areas. During the construction of tunnels, the problem of voids behind the tunnel lining is a common tunnel disease. The resulting bulging of the arch, fracturing of the inner edge of the lining, and falling of blocks are common.

[0003] Grouting is usually carried out using the reserved arch grouting holes and mechanical drill holes during lining construction. However, it is difficult to accurately control and measure the cutting size and depth with existing drilling equipment, which may damage the waterproof board and other structures, and cause low drilling and cutting efficiency and pollution. Water cutting can be used to cut glass, ceramics, stainless steel, rock, concrete, etc. through high-speed impact water flow without producing toxic gases. It has the advantages of low cost, high efficiency, smooth and uniform incisions, etc. A method for non-damaging water cutting and grouting to treat lining voids has been invented, which solves the problems of difficult to accurately control and measure the size and depth of drilling holes in cutting lining concrete, damage to waterproof boards, and treatment of lining voids. Summary of the invention

[0004] The purpose of the present invention is to provide a non-destructive water cutting and grouting method for treating lining voids according to the shortcomings of the above-mentioned prior art. Grouting holes are drilled in the lining void area by a nozzle that measures the water cutting depth and path in real time. A laser rangefinder is installed on one side of the nozzle of the nozzle. The laser rangefinder includes an optical fiber, a laser transmitter and a receiver. First, the characteristic parameters of the lining void are detected by ground penetrating radar, and the cutting water pressure and cutting profile are determined according to the lining strength and the void area, and the cutting time of each point of the cutting profile is calculated. When cutting, the laser rangefinder is turned on to measure the cutting depth and path, and a three-dimensional diagram of the cutting depth and path is drawn. The loose concrete is removed, and then a secondary cutting is performed. Finally, the lining void is filled by grouting through the grouting hole. The optical fiber is used to guide the laser to be parallel to the nozzle water jet, so that the water jet cutting depth and path can be measured in real time to ensure that the cutting does not damage other structures; the cutting size can be accurately controlled by real-time measurement of the cutting depth and path, and the cutting quality can be guaranteed; the water cutting efficiency is high, and the smoke and dust are reduced, which is more environmentally friendly; the water cutting can clean the scum in the void, which is conducive to the dense filling of the lining void.

[0005] The purpose of the present invention is achieved by the following technical solutions: A method for treating lining voids by water cutting and grouting without causing any damage, the method comprising the following steps: S1: Use ground penetrating radar to obtain the characteristic parameters of the cavity behind the tunnel lining and draw a three-dimensional graph of the lining in the cavity area; S2: Determine the water cutting pressure according to the lining strength, determine the water cutting contour according to the cavity area, and calculate the water cutting time according to the lining thickness at each point of the water cutting contour; S3: Perform water cutting according to the set water cutting pressure and water cutting time, start the laser rangefinder to measure the distance in real time, and draw a three-dimensional graph of the cutting depth and path of the cavity area; S4: After the water jet cutting is completed, the loose lining concrete in the cavity area is removed; S5: performing grouting filling on the cavity area to complete the grouting filling.

[0006] The characteristic parameters of the cavity behind the tunnel lining include cavity position coordinate parameters and cavity size parameters.

[0007] In step S4, after the initial water cutting is completed, the loose lining concrete in the cavity area is broken, the actual cutting depth and path are compared with the preset cutting depth and path, secondary water cutting is performed on the position where the breaking depth is insufficient, and the loose lining concrete in the cavity area is cleaned to complete the water cutting.

[0008] The cutting of the lining is achieved by a water jet sprayed by a nozzle, the nozzle consists of a nozzle and the laser rangefinder installed on the nozzle, the laser rangefinder includes a laser transmitter, a receiver and an optical fiber, the laser transmitter is connected to the optical fiber, the laser emitted by the laser transmitter and guided by the optical fiber is parallel to the water jet sprayed by the nozzle, the water jet sprayed by the nozzle is used to cut the lining, and the receiver is used to receive the laser emitted by the laser transmitter.

[0009] The nozzle comprises a water inlet section and a water outlet section, the water inlet section is a conical structure, the inner diameter of the water inlet section gradually decreases along the water inlet direction, and the inner diameter of the water outlet section is equal to the minimum inner diameter of the water inlet section.

[0010] The laser transmitter is installed on the outer wall of the water inlet section of the nozzle, and a part of the optical fiber is installed on the outer wall of the water inlet section of the nozzle, and the other part is installed on the outer wall of the water outlet section of the nozzle.

[0011] The nozzle is mounted on the connector.

[0012] The advantages of the present invention are: (1) Realize real-time measurement of water jet cutting depth and path to ensure that cutting does not damage other structures; (2) Through real-time measurement of cutting depth and path, the cutting size can be accurately controlled to ensure cutting quality; (3) Water cutting has high efficiency, reduces smoke and dust, and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic flow chart of the steps of the method for treating lining voids without water cutting and grouting according to the present invention; Figure 2 It is a structural schematic diagram of the nozzle of the present invention; Figure 3 It is a working schematic diagram of the nozzle of the present invention; like Figures 1 to 3 As shown, the marks in the figure represent respectively: 1. Nozzle, 2. Surrounding rock, 3. Primary lining, 4. Secondary lining, 5. Cavity; 11. Nozzle, 12. Connector, 13. Water jet, 14. Laser transmitter, 15. Receiver, 16. Optical fiber, 17. Laser. DETAILED DESCRIPTION

[0014] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: Example: Figures 1 to 3 As shown, this embodiment specifically relates to a method for treating lining voids without water cutting and grouting, and the method mainly includes the following steps: S1: Use ground penetrating radar to obtain the characteristic parameters of the cavity behind the tunnel lining and draw a three-dimensional graph of the lining in the cavity area.

[0015] Among them, the characteristic parameters of the void behind the tunnel lining include void position coordinate parameters and void size parameters.

[0016] S2: Determine the water cutting pressure according to the lining strength, determine the water cutting contour according to the void area, and calculate the water cutting time according to the lining thickness at each point on the water cutting contour.

[0017] S3: Perform water cutting according to the set water cutting pressure and water cutting time, turn on the laser rangefinder for real-time distance measurement, and draw a three-dimensional graph of the cutting depth and path of the cavity area.

[0018] Among them, Figure 2~3As shown, the cutting of the lining is achieved by the water jet 13 sprayed by the nozzle 1. The nozzle 1 is composed of a nozzle 11 and a laser rangefinder installed on the nozzle 11. The laser rangefinder includes a laser transmitter 14, a receiver 15 and an optical fiber 16. The laser transmitter 14 is connected to the optical fiber 16. The laser 17 emitted by the laser transmitter 14 and guided by the optical fiber 16 is parallel to the water jet 13 sprayed by the nozzle 11. The water jet 13 sprayed by the nozzle 11 is used to cut the secondary lining 4. The receiver 15 is used to receive the laser 17 emitted by the laser transmitter 14 to measure the cutting depth of the water jet 13 in real time and record the cutting path of the water jet 13. Using the laser rangefinder, the cutting depth and path of the water jet 13 can be measured in real time, the cutting size can be accurately controlled, and the cutting quality can be guaranteed. The nozzle 11 includes a water inlet section and a water outlet section. The water inlet section is a conical structure. The inner diameter of the water inlet section gradually decreases along the water inlet direction. The inner diameter of the water outlet section is equal to the minimum inner diameter of the water inlet section. The laser transmitter 14 is mounted on the outer wall of the water inlet section of the nozzle 11, and a portion of the optical fiber 16 is mounted on the outer wall of the water inlet section of the nozzle 11, and another portion is mounted on the outer wall of the water outlet section of the nozzle 11. The water inlet section of the nozzle 11 is mounted on the connector 12, which can be connected to a water source, and by adjusting the position of the connector 12, the position of the nozzle 11 and the laser rangefinder can be adjusted.

[0019] Specifically, first adjust the position of the nozzle 1, then turn on the laser rangefinder and the nozzle 11, and use the water jet 13 to water cut the secondary lining 4 until the cavity 5 in the secondary lining 4 is cut, wherein the cavity 5 is located between the primary lining 3 and the secondary lining 4 on the surrounding rock 2.

[0020] S4: After water jet cutting is completed, loose lining concrete in the void area is removed.

[0021] Among them, after the initial water cutting is completed, the loose lining concrete in the void area is broken, the actual cutting depth and path are compared with the preset cutting depth and path, secondary water cutting is performed on the position where the breaking depth is insufficient, and the loose lining concrete in the void area is cleaned to complete the water cutting.

[0022] S5: Grouting is performed to fill the void area to complete the grouting filling.

[0023] The beneficial effects of this embodiment are: (1) Realize real-time measurement of water jet cutting depth and path to ensure that cutting does not damage other structures; (2) Through real-time measurement of cutting depth and path, the cutting size can be accurately controlled to ensure cutting quality; (3) Water cutting has high efficiency, reduces smoke and dust, and is more environmentally friendly.

[0024] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and changes can still be made to the present invention without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A method for treating lining voids by water cutting and grouting without causing any damage, characterized in that The method comprises the following steps: S1: Use ground penetrating radar to obtain the characteristic parameters of the cavity behind the tunnel lining and draw a three-dimensional graph of the lining in the cavity area; S2: Determine the water cutting pressure according to the lining strength, determine the water cutting contour according to the cavity area, and calculate the water cutting time according to the lining thickness at each point of the water cutting contour; S3: Perform water cutting according to the set water cutting pressure and water cutting time, start the laser rangefinder to measure the distance in real time, and draw a three-dimensional graph of the cutting depth and path of the cavity area; S4: After the water jet cutting is completed, the loose lining concrete in the cavity area is broken; S5: performing grouting filling on the cavity area to complete the grouting filling.

2. The method for treating lining voids by water cutting and grouting without damaging the lining according to claim 1 is characterized in that The characteristic parameters of the cavity behind the tunnel lining include cavity position coordinate parameters and cavity size parameters.

3. The method for treating lining voids by water cutting and grouting without damaging the lining according to claim 1 is characterized in that In step S4, after the initial water cutting is completed, the loose lining concrete in the cavity area is broken, the actual cutting depth and path are compared with the preset cutting depth and path, secondary water cutting is performed on the position where the breaking depth is insufficient, and the loose lining concrete in the cavity area is cleaned to complete the water cutting.

4. The method for treating lining voids by water cutting and grouting without damaging the lining according to claim 1 is characterized in that The cutting of the lining is achieved by a water jet sprayed by a nozzle, the nozzle consists of a nozzle and the laser rangefinder installed on the nozzle, the laser rangefinder includes a laser transmitter, a receiver and an optical fiber, the laser transmitter is connected to the optical fiber, the laser emitted by the laser transmitter and guided by the optical fiber is parallel to the water jet sprayed by the nozzle, the water jet sprayed by the nozzle is used to cut the lining, and the receiver is used to receive the laser emitted by the laser transmitter.

5. The method for treating lining voids by water cutting and grouting without damaging the lining according to claim 4 is characterized in that The nozzle comprises a water inlet section and a water outlet section, the water inlet section is a conical structure, the inner diameter of the water inlet section gradually decreases along the water inlet direction, and the inner diameter of the water outlet section is equal to the minimum inner diameter of the water inlet section.

6. The method for treating lining voids by water cutting and grouting without damaging the lining according to claim 5 is characterized in that The laser transmitter is installed on the outer wall of the water inlet section of the nozzle, and a part of the optical fiber is installed on the outer wall of the water inlet section of the nozzle, and the other part is installed on the outer wall of the water outlet section of the nozzle.

7. The method for treating lining voids by water cutting and grouting without damaging the lining according to claim 4 is characterized in that The nozzle is mounted on the connector.

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