A grouting anti-seepage device applicable to rock and soil cultural relics

Abstract

The present invention discloses a grouting anti-seepage device applicable to rock and soil cultural relics, which relates to the field of reinforcement construction. The device includes a feedback barrel, a grouting pipe and a return slurry pipe. The two ends of the grouting pipe are respectively communicated with the outlet end of the feedback barrel and the bottom of the grouting hole, and the two ends of the return slurry pipe are respectively communicated with the inlet end of the feedback barrel and the upper part of the grouting hole. A grouting pump, a first electromagnetic flowmeter and a first pressure sensor are successively arranged on the grouting pipe, and a second pressure sensor, a pressure regulating valve, a second electromagnetic flowmeter and a detection component for detecting the fluid pressure in the return slurry pipe are successively arranged on the return slurry pipe. In view of the current situation that it is difficult to mix and adjust the newly prepared slurry and the returned slurry in the feedback barrel, the present invention uses a detection system to measure the water-cement ratio of the returned slurry and the newly prepared slurry in the feedback barrel in real time, and pumps them into the grouting hole in time after rapid adjustment, so as to realize the real-time matching of the pumped slurry and the depth of the grouting hole.

Description

Technical Field

[0001] The invention relates to the technical field of cultural relics restoration, and in particular to a grouting anti-seepage device suitable for rock and soil cultural relics. Background Art

[0002] The main diseases of rock and soil cultural relics include stability, water damage, and weathering. Water damage is the primary disease of rock and soil cultural relics, especially cave cultural relics. Water damage can cause the instability of rock and soil cultural relics and aggravate the weathering of the surface of cultural relics. Therefore, water damage control has always been the focus and difficulty of rock and soil cultural relics protection. Grouting is a common means of water damage control. At present, in cultural relics protection, grouting equipment mainly uses equipment from water conservancy and hydropower projects, without special customized equipment. The equipment is large in size, difficult to deploy in cultural relics areas, and there is a lot of human interference in the grouting process, which affects the grouting quality and water damage control effect, and cannot meet the requirements of fine grouting of rock and soil cultural relics. Therefore, special equipment for the prevention and control of seepage diseases is developed to improve the level of grouting automation, achieve accurate grouting control and metering, and be able to respond to small changes in pressure and injection volume during grouting, adapt to the characteristics of low pressure and small injection volume of grouting of rock and soil cultural relics, and at the same time reduce grouting abandonment and protect the environment of cultural relics areas.

[0003] When implementing grouting reinforcement for dangerous rock mass, segmented drilling grouting is selected, that is, after completing the drilling process of a single grouting hole in the rock formation, the grouting process of the grouting hole is started; during the final stage of grouting using the existing grouting equipment, the cement slurry in the grouting hole will overflow and can be recycled after being processed by the return grouting pipeline for secondary use. However, since the cement slurry in the grouting hole is poured from bottom to top, when grouting at the tail end of the grouting hole, the solid and liquid phases (including crushed stone, cement slurry or water) in the hole will flow out with the hole. The increase of cement slurry at the bottom is squeezed out of the hole, and in the grouting process, the existing grouting equipment cannot ensure that the cement slurry recovered in the grouting system is consistent with the quality and specifications of the newly made slurry. In particular, in the curtain grouting process, multiple grouting holes will be drilled in the dangerous rock mass, and the number of grouting times is relatively large. Once the cement slurry that does not meet the standards and is recycled is injected into the remaining grouting holes again, it is very easy to cause the reinforcement effect of a single grouting hole to be reduced, thereby causing the reinforcement effect of the entire dangerous rock mass to be unsatisfactory. Summary of the invention

[0004] The present invention aims to provide a grouting anti-seepage device suitable for rock and soil cultural relics to solve the above-mentioned problems.

[0005] The present invention is achieved through the following technical solutions:

[0006] A grouting anti-seepage device applicable to rock and soil cultural relics, comprising a feedback barrel, a grouting pipe and a return slurry pipe. The two ends of the grouting pipe are respectively communicated with the outlet end of the feedback barrel and the bottom of the grouting hole, and the two ends of the return slurry pipe are respectively communicated with the inlet end of the feedback barrel and the upper part of the grouting hole. A grouting pump, a first electromagnetic flowmeter and a first pressure sensor are successively arranged on the grouting pipe, and a second pressure sensor, a pressure regulating valve, a second electromagnetic flowmeter and a detection component for detecting the fluid pressure in the return slurry pipe are successively arranged on the return slurry pipe. In the prior art, when segmental reinforcement grouting is carried out on a tunnel, according to the specific conditions inside the grouting hole, such as when grouting from the bottom of the hole to the orifice, the grouting pressure and the water-cement ratio at different depths will gradually change. If the relevant data during the preparation at the slurry-making end are not adjusted in a timely and corresponding manner, the grouting effect inside the grouting hole will be greatly reduced; and as the grouting progress continues, the fluid in the upper section of the grouting hole will flow back with the increase of the pressure inside the hole, and when it is determined that the flowing-back fluid is the cement slurry overflowing from the hole, it will be recovered through the return slurry pipe. At this time, the flowing-back cement slurry will enter the feedback barrel and be mixed with the newly prepared slurry, so as to ensure that the cement slurry injected into the grouting hole subsequently meets the grouting requirements; precisely because of the above operations, the difficulty of adjusting the water-cement ratio of the cement slurry in the feedback barrel increases sharply, and the direct discharge of the flowing-back cement slurry will not only pollute the environment but also cause huge waste. Therefore, the above problems are the difficulties and pain points that trouble the technicians in this field. Through long-term research and comparison, the applicant has designed a reinforcement grouting system. Aiming at the current situation that the reinforcement effect of a single grouting hole is not obvious during the tunnel excavation process in soft strata and the mixing and adjustment of the newly prepared slurry and the flowing-back slurry in the feedback barrel are difficult, the detection system is used to measure the water-cement ratio of the flowing-back slurry and the newly prepared slurry in the feedback barrel in real time, and after rapid adjustment, it is timely pumped into the grouting hole to achieve real-time matching of the pumped-in slurry and the depth of the grouting hole.

[0007] During specific operation, the first electromagnetic flowmeter connected to the grouting pipe records the flow rate of the pumped-in cement slurry, and the first pressure sensor detects the real-time grouting pressure in the grouting pipe. When approaching the end section of grouting, the cement slurry in the grouting hole starts to flow back and returns to the feedback barrel through the return slurry pipe. The detection component measures the pressure generated by the fluid in the return slurry pipe, and finally calculates the water-cement ratio parameter of the flowing-back cement slurry. When it is determined whether this part of the flowing-back cement slurry matches the cement slurry in the feedback barrel, if it can be determined that they match, the detection component controls the flowing-back cement slurry to directly flow into the feedback barrel, and the cement slurry in the feedback barrel is not specially treated; if they do not match, it can be directly discharged by the detection component to another conveying pipeline, or the cement slurry in the feedback barrel can be correspondingly treated (such as increasing or decreasing the intake of clear water, etc.).

[0008] The detection component includes a U-shaped tube and a bracket for supporting the U-shaped tube. One end of the U-shaped tube is communicated with the end of the return slurry pipe through a flexible hose. The other end of the U-shaped tube is respectively connected with a sewage discharge pipe and a connecting hose through a three-way valve, and the connecting hose is communicated with the inlet end of the feedback barrel.

[0009] Two side plates are respectively arranged on the opposite side walls of the bracket, and the two side plates are connected by a T-shaped plate. The two vertical sections of the U-shaped tube are connected by a connecting plate.

[0010] A base is arranged on one side plate. Two support plates for supporting the middle part of the horizontal section of the U-shaped tube are rotatably arranged on the upper surface of the base. The side walls on the same side of the two support plates are connected by a torsion spring. A rectangular groove is opened on the base along the axis of the horizontal section of the U-shaped tube. A plurality of bottom rods are distributed at intervals in the rectangular groove. The lower end of each bottom rod is connected with the bottom of the rectangular groove through a tension spring. The upper end of each bottom rod is provided with a top block, and a pressure detector that always keeps in contact with the middle part of the horizontal section of the U-shaped tube is arranged on the top block. Further, when the returned cement slurry passes through the return slurry pipe, in the initial state, the middle part of the horizontal section of the U-shaped tube is suspended. After the fluid passes through, it will force the horizontal section of the U-shaped tube to move downward. Two support plates and a plurality of bottom rods are respectively arranged on the base opposite to the middle part of the horizontal section of the U-shaped tube. After the horizontal section of the U-shaped tube starts to move downward, the outer wall of the horizontal section of the U-shaped tube first contacts the inner walls of the two support plates, and the distance between the upper parts of the two support plates is increased. The torsion spring is stretched, and at the same time, the inner walls of the support plates are extruded. The bottom of the horizontal section of the U-shaped tube contacts the upper surface of the top block and extrudes it. At the same time, the pressure detector detects the pressure generated by the horizontal section of the U-shaped tube. The pressure values detected by the plurality of pressure detectors are collected and sorted out and compared with the data values measured in advance, so as to obtain the water-cement ratio of the cement slurry in the current return slurry pipe. And through the control of the three-way valve, it is further determined whether the returned cement slurry flows into the feedback barrel. It should be noted that in this technical solution, the three-way valve is an electromagnetic valve, the pressure detector is equivalent to the existing pressure sensor, and both the three-way valve and the pressure detector are electrically connected to the PLC control system. That is, when the detection values of the plurality of pressure detectors are compared with the preset values, the control command issued is to control whether the returned cement slurry flows through the connecting hose or through the sewage discharge pipe.

[0011] The upper surfaces of the top blocks are all arc-shaped matching the outer wall of the U-shaped tube, and the pressure detector is placed in the middle of the arc bottom on the upper surface of the top block. Further, the upper surface of the top block matches the outer wall of the U-shaped tube, which can ensure that the measurement points of the horizontal section of the U-shaped tube after moving downward are unified, so as to increase the accuracy of the detection quantity.

[0012] In the middle of the horizontal section of the U-shaped pipe, a detection flowmeter for real-time monitoring of fluid flow is also provided. Further, to increase the reliability of the measurement data of the detection component, the set detection flowmeter can measure the instantaneous flow and the cumulative flow, and the flow data can also be matched with the flow values formed under the condition of the pre-set pumping pressure, so as to provide auxiliary data support for the measurement of the water-cement ratio of the cement slurry in the return pipe.

[0013] A first connecting rod is provided on the side wall of one supporting plate. At the end of the first connecting rod, a first follower plate perpendicular to its axis is provided. On the first follower plate, a first locking pin parallel to the first connecting rod is provided. The end of the first locking pin is hinged with an inner arm; on the side wall of another supporting plate, a second connecting rod with an axial length greater than that of the first connecting rod is provided. At the end of the second connecting rod, a second follower plate perpendicular to its axis is provided. On the second follower plate, a second locking pin parallel to the second connecting rod is provided. The end of the second locking pin is hinged with an outer arm;

[0014] A pull rod is provided on the vertical section of the T-shaped plate along the vertical direction. A ball head is provided at the upper end of the pull rod, and a spherical cavity matching the ball head is opened at the bottom of the connecting plate;

[0015] A rotating plate is rotatably provided on the side wall of the vertical section of the T-shaped plate. The two ends of the rotating plate are respectively hinged with the ends of the outer arm away from the supporting plate and the inner arm away from the supporting plate;

[0016] A disk with angle scales is provided on the side wall of the vertical section of the T-shaped plate. The rotating plate is rotatably provided in the middle of the outer side wall of the disk.

[0017] Further, after the refluxed cement slurry enters the horizontal section of the U-shaped pipe, the horizontal section of the U-shaped pipe is in an inclined state, and the two supporting plates are stressed so that the tops of the two are away from each other. While the two supporting plates rotate around the first connecting rod and the second connecting rod respectively, the first connecting rod and the second connecting rod will drive the first follower plate and the second follower plate to move in the opposite direction respectively, and then drive the inner arm and the outer arm to move. At this time, the rotating plate starts to rotate along its axis, and the rotating angle can be reflected on the disk with angle scales, that is, through the specific length of the first connecting rod, etc., the angle after the supporting plate flips can be calculated, so as to provide data support for calculating the magnitude of the supporting force of the two supporting plates on the horizontal section of the U-shaped pipe; and at the same time, in order to count the rotation angle data of the rotating plate into the PLC control system, in this technical solution, an angle sensor can be provided on the axis of the rotating plate, and the angle sensor is electrically connected to the PLC control system.

[0018] The axial distance between the first connecting rod and the first pin shaft is greater than the axial distance between the second connecting rod and the second pin shaft. Preferably, the axial distance between the first connecting rod and the first pin shaft is greater than the axial distance between the second connecting rod and the second pin shaft, which can effectively avoid the mutual interference of the movements between the inner arm and the outer arm.

[0019] A liquid level sensor is provided at the top of the feedback bucket, and a fourth pressure sensor is provided at the bottom. A stirrer is provided inside the feedback bucket. Further, the provided liquid level sensor and fourth pressure sensor can detect the density and volume of the freshly prepared cement slurry in the feedback bucket, and then calculate the corresponding water-cement ratio of the cement slurry, thereby providing a reference for the detection data of the detection component. Similarly, the liquid level sensor and fourth pressure sensor are electrically connected to the PLC control system to facilitate the automatic input of the detection data and the subsequent data comparison.

[0020] A slurry mixing valve communicating with the feedback bucket is provided at the top of the feedback bucket. Two feed ports respectively communicating with a clear water pipe and a raw slurry pipe are provided on the slurry mixing valve. As a preference, the slurry mixing valve can control the feed amount of the cement slurry in the raw slurry pipe and the feed amount of the clear water in the clear water pipe, facilitating the real-time adjustment of the water-cement ratio of the cement slurry inside the feedback bucket.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0022] 1. The present invention can address the current situation of high difficulty in mixing and blending the freshly prepared slurry and the reflux slurry in the feedback bucket. It uses the detection system to measure the water-cement ratio of the reflux slurry and the freshly prepared slurry in the feedback bucket in real time, and after rapid adjustment, it is promptly pumped into the grouting hole, realizing the real-time matching of the pumped slurry and the depth of the grouting hole.

[0023] 2. In the present invention, the two support plates connected by a tension spring can not only locally wrap and clamp the horizontal section of the U-shaped pipe, but also assist the connecting plate to limit the entire U-shaped pipe. That is, during the detection stage, the inclined state of the horizontal section of the U-shaped pipe is ensured. At the same time, the extrusion force of the support plate on the outer wall of the horizontal section of the U-shaped pipe can be obtained through the deformation amount of the tension spring. Similarly, the tension of the tension spring can also be measured by setting a spring dynamometer, and this measurement data is also incorporated into the PLC system to facilitate the measurement of the water-cement ratio of the cement slurry in the U-shaped pipe.

[0024] 3. In the present invention, the axial distance between the first connecting rod and the first pin shaft is greater than the axial distance between the second connecting rod and the second pin shaft, which can effectively prevent the movement between the inner arm and the outer arm from interfering with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 is a schematic structural diagram of the detection component;

[0028] Figure 3For Figure 2 An enlarged view of part A in

[0029] Figure 4 A schematic structural view of a pressure detection seat.

[0030] The reference numerals represent: 1 - grouting hole, 2 - first pressure sensor, 3 - pressure gauge, 4 - first electromagnetic flowmeter, 5 - grouting pipe, 6 - grouting pump, 7 - second pressure sensor, 8 - pressure regulating valve, 9 - return slurry pipe, 10 - second electromagnetic flowmeter, 11 - detection assembly, 12 - secondary fluid detection assembly, 13 - clear water pipe, 14 - grouting valve, 15 - original slurry pipe, 16 - third pressure sensor, 17 - feedback barrel, 18 - stirrer, 19 - fourth pressure sensor, 20 - bracket, 21 - connecting plate, 22 - U-shaped pipe, 23 - hoop, 24 - connecting hose, 25 - sewage pipe, 26 - side plate, 27 - T-shaped plate, 28 - detection flowmeter, 29 - base, 30 - rotating plate, 31 - supporting plate, 32 - first connecting rod, 33 - first follower plate, 34 - first pin shaft, 35 - inner arm, 36 - second connecting rod, 37 - second follower plate, 38 - second pin shaft, 39 - outer arm, 40 - rectangular groove, 41 - bottom rod, 42 - tension spring, 43 - top block, 44 - pressure detector, 45 - disc, 46 - torsion spring. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with embodiments and drawings. The illustrative embodiments and descriptions thereof of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention has been in the actual R & D and usage stage.

[0032] Embodiment 1

[0033] As Figure 1 shown, this embodiment includes a feedback barrel 17, a grouting pipe 5 and a return slurry pipe 9. The two ends of the grouting pipe 5 are respectively communicated with the outlet end of the feedback barrel 17 and the bottom of the grouting hole 1, and the two ends of the return slurry pipe 9 are respectively communicated with the inlet end of the feedback barrel 17 and the upper part of the grouting hole 1. A grouting pump 6, a first electromagnetic flowmeter 4 and a first pressure sensor 2 are successively arranged on the grouting pipe 5, and a second pressure sensor 7, a pressure regulating valve 8, a second electromagnetic flowmeter 10 and a detection assembly 11 for detecting the fluid pressure in the return slurry pipe 9 are successively arranged on the return slurry pipe 9.

[0034] During specific operation, the first electromagnetic flowmeter 4 connected to the grouting pipe 5 records the flow rate of the pumped cement slurry, and the real-time grouting pressure inside the grouting pipe 5 is detected by the first pressure sensor 2. When approaching the end section of grouting, the cement slurry in the grouting hole 1 starts to return, and flows back to the feedback bucket 17 through the return pipe 9. The detection component 11 measures the pressure generated by the fluid in the return pipe 9, and finally calculates the water-cement ratio parameter of the returned cement slurry through conversion. It is determined whether this part of the returned cement slurry matches the cement slurry in the feedback bucket 17. If it can be determined that they match, the detection component 11 controls the returned cement slurry to directly flow into the feedback bucket 17, and the cement slurry in the feedback bucket 17 is not specially treated; if they do not match, it can be directly discharged by the detection component 11 to another conveying pipeline, or the cement slurry in the feedback bucket 17 can be correspondingly treated (such as increasing or decreasing the water intake, etc.).

[0035] In this embodiment, in order to increase the returned cement slurry flowing back to the feedback bucket 17 to meet the requirements, a secondary detection component 11 is set again at the outlet end of the detection component 11 for secondary detection, and the structure and connection method of the secondary detection component 11 are the same as those of the detection component 11.

[0036] In this embodiment, a liquid level sensor is provided at the top of the feedback bucket 17 and a fourth pressure sensor 19 is provided at its bottom, and a stirrer 18 is provided inside the feedback bucket 17. The provided liquid level sensor and the fourth pressure sensor 19 can detect the density and volume of the newly prepared cement slurry in the feedback bucket 17, and then calculate the corresponding water-cement ratio of the cement slurry, so as to provide a reference for the detection data of the detection component 11. Similarly, the liquid level sensor and the fourth pressure sensor 19 are electrically connected to the PLC control system to facilitate the automatic entry of its detection data and the subsequent data comparison.

[0037] Preferably, the slurry mixing valve can control the feed amount of the cement slurry in the raw slurry pipe 15 and the feed amount of the clear water in the clear water pipe 13, which is convenient for adjusting the water-cement ratio of the cement slurry inside the feedback bucket 17 in real time. And when the pressure in the whole pipeline is too high, it can be adjusted accordingly through the pressure regulating valve 8.

[0038] Embodiment 2

[0039] As Figures 1 to 4 shown, on the basis of Embodiment 1, this embodiment elaborates in detail on the detection method in Embodiment 1;

[0040] Among them, the detection component 11 includes a U-shaped pipe 22 and a bracket 20 for supporting the U-shaped pipe 22. One end of the U-shaped pipe 22 is communicated with the end of the return pipe 9 through a flexible hose, and the other end of the U-shaped pipe 22 is respectively connected with a sewage pipe 25 and a connecting hose 24 through a three-way valve, and the connecting hose 24 is communicated with the inlet end of the feedback bucket 17;

[0041] On opposite side walls of the bracket 20, two side plates 26 are respectively provided, and the two side plates 26 are connected by a T-shaped plate 27. Two vertical sections of the U-shaped pipe 22 are connected by a connecting plate 21;

[0042] On one side plate 26, a base 29 is provided. On the upper surface of the base 29, two support plates 31 for supporting the middle part of the horizontal section of the U-shaped pipe 22 are rotatably arranged. Side walls on the same side of the two support plates 31 are connected by a torsion spring 46. And along the axis of the horizontal section of the U-shaped pipe 22, a rectangular groove 40 is formed in the base 29. A plurality of bottom rods 41 are distributed at intervals in the rectangular groove 40. And the lower end of each bottom rod 41 is connected to the bottom of the rectangular groove 40 through a tension spring 42. The upper end of each bottom rod 41 is provided with a top block 43. And a pressure detector 44 that always keeps in contact with the middle part of the horizontal section of the U-shaped pipe 22 is provided on the top block 43.

[0043] In this embodiment, relevant data of the present invention need to be explained: After the product is manufactured, multiple corresponding data detection experiments are carried out on the cement slurry with different water-cement ratios when passing through the pipeline. For example, when the water-cement ratio is 5:1, the pressure formed by the cement slurry on the pipeline is F1, where F1 is the sum of the dynamic pressure and the static pressure in the pipeline. And when the water-cement ratio is 3:1, the pressure formed by the cement slurry on the pipeline is F2. By analogy, when the water-cement ratios are 2:1, 1:1, 0.8:1, 0.6:1, 0.5:1, etc., the pressures formed by the cement slurry on the pipeline are F3, F4, F5, F6, F7···Fn. And after pumping the cement slurry under the same conditions, the pressure values of the pipeline on the support plate 31 can also be detected to obtain corresponding values, such as N1, N2, N3, N4, N5, N6, N7···Nn. That is, the above initial values can be input into the PLC control system so as to be used as a preset data comparison standard for real-time detection in this embodiment.

[0044] When the refluxed cement slurry passes through the return slurry pipe 9, in the initial state, the middle part of the horizontal section of the U-shaped pipe 22 is suspended. After the fluid passes through, it will force the horizontal section of the U-shaped pipe 22 to move downward. And on the base 29 opposite to the middle part of the horizontal section of the U-shaped pipe 22, two support plates 31 and a plurality of bottom rods 41 are respectively arranged. And after the horizontal section of the U-shaped pipe 22 starts to move downward, the outer wall of the horizontal section of the U-shaped pipe 22 first contacts the inner walls of the two support plates 31 and increases the distance between the upper parts of the two support plates 31. The torsion spring 46 is stretched, and at the same time, the inner walls of the support plates 31 are extruded. The bottom of the horizontal section of the U-shaped pipe 22 contacts the upper surface of the top block 43 and exerts extrusion on it. At the same time, the pressure detector 44 detects the pressure generated by the horizontal section of the U-shaped pipe 22. The pressure values detected by the multiple pressure detectors 44 are collected and sorted out and compared with the data values measured in advance, so as to obtain the water-cement ratio value of the cement slurry in the current return slurry pipe 9. And through the control of the three-way valve, it is further determined whether the refluxed cement slurry flows into the feedback bucket 17.

[0045] Furthermore, since the fluid in the return slurry pipe 9 and the U-shaped tube 22 will cause a certain impact on the pipeline during movement, especially the U-shaped tube 22 in the present technical solution, whose horizontal section is in a suspended state, the impact on the horizontal section of the U-shaped tube 22 will also change after the flow rate of the returning cement slurry changes, so that the horizontal section of the U-shaped tube 22 will produce radial runout, thereby affecting the detection accuracy of a single or multiple pressure detectors 44 in a certain time period. In this regard, the two support plates 31 connected by the tension spring 42 can not only partially wrap and clamp the horizontal section of the U-shaped tube 22, but also assist the connecting plate 21 to limit the entire U-shaped tube 22, that is, to ensure the inclination of the horizontal section of the U-shaped tube 22 during the detection stage, and at the same time, the extrusion pressure of the support plate 31 on the outer wall of the horizontal section of the U-shaped tube 22 can be obtained by the deformation of the tension spring 42. Similarly, the tension of the tension spring 42 can be measured by setting a spring dynamometer, and the measurement data can also be incorporated into the PLC system to facilitate the measurement of the water-cement ratio of the cement slurry in the U-shaped tube 22.

[0046] When measuring the specific value of the extrusion force on the inner wall of the support plate 31, the following structure can be used:

[0047] A first connecting rod 32 is provided on the side wall of one supporting plate 31, a first follower plate 33 perpendicular to the axis of the first connecting rod 32 is provided at the end thereof, a first locking pin parallel to the first connecting rod 32 is provided on the first follower plate 33, an inner arm 35 is hingedly provided at the end of the first locking pin; a second connecting rod 36 having an axial length greater than that of the first connecting rod 32 is provided on the side wall of the other supporting plate 31, a second follower plate 37 perpendicular to the axis of the second connecting rod 36 is provided at the end thereof, a second locking pin parallel to the second connecting rod 36 is provided on the second follower plate 37, an outer arm 39 is hingedly provided at the end of the second locking pin;

[0048] A pull rod is provided in the vertical section of the T-shaped plate 27 along the vertical direction, a ball head is provided at the upper end of the pull rod, and a spherical cavity matching the ball head is opened at the bottom of the connecting plate 21;

[0049] A rotating plate 30 is rotatably arranged on the vertical side wall of the T-shaped plate 27, and both ends of the rotating plate 30 are respectively hinged to the end of the outer arm 39 away from the supporting plate 31 and the end of the inner arm 35 away from the supporting plate 31;

[0050] A disc 45 with angle scales is provided on the side wall of the vertical section of the T-shaped plate 27 , and the rotating plate 30 is rotatably disposed at the middle of the outer side wall of the disc 45 .

[0051] After the refluxed cement slurry enters the horizontal section of the U-shaped pipe 22, the horizontal section of the U-shaped pipe 22 is in an inclined state, and the two support plates 31 are stressed so that the tops of the two are far away from each other. While the two support plates 31 rotate around the first connecting rod 32 and the second connecting rod 36 respectively, the first connecting rod 32 and the second connecting rod 36 will drive the first follower plate 33 and the second follower plate 37 to move in the opposite direction respectively, and then drive the inner arm 35 and the outer arm 39 to move. At this time, the rotating plate 30 starts to rotate along its axis, and the rotation angle can be reflected on the disk 45 with angle scales. That is, through the specific lengths of the first connecting rod 32, etc., the angle after the support plate 31 is flipped can be calculated, and then data support is provided for calculating the magnitude of the supporting force of the two support plates 31 on the horizontal section of the U-shaped pipe 22; and at the same time, in order to count the rotation angle data of the rotating plate 30 into the PLC control system, an angle sensor can be set on the axis of the rotating plate 30 in this technical solution, and the angle sensor is electrically connected to the PLC control system.

[0052] Preferably, the axial distance between the first connecting rod 32 and the first pin shaft 34 is greater than the axial distance between the second connecting rod 36 and the second pin shaft 38, which can effectively avoid the movement between the inner arm 35 and the outer arm 39 from interfering with each other. And both ends of the connecting plate 21 are connected to the two vertical sections of the U-shaped pipe 22 through clamps 23. The connecting plate 21 itself has a certain width to ensure the normal placement of the U-shaped pipe 22 in the idle state.

[0053] Preferably, the upper surfaces of the top blocks 43 are all arc-shaped that match the outer wall of the U-shaped pipe 22, and the pressure detector 44 is placed in the middle of the arc bottom of the upper surface of the top block 43; a detection flowmeter 28 for real-time monitoring of the fluid flow rate is also provided in the middle of the horizontal section of the U-shaped pipe 22. The upper surface of the top block 43 matches the outer wall of the U-shaped pipe 22, which can ensure that the measurement points of the horizontal section of the U-shaped pipe 22 remain unified after moving downward, so as to increase the accuracy of the detection quantity;

[0054] To increase the reliability of the measurement data of the detection component 11, the set detection flowmeter 28 can measure the instantaneous flow rate and the cumulative flow rate, and the flow rate data can also be matched with the flow rate values formed under the pre-set pumping pressure conditions, and then auxiliary data support is provided for the measurement of the water-cement ratio of the cement slurry in the return pipe 9.

[0055] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grouting anti-seepage device applicable to rock and soil cultural relics, comprising a feedback barrel (17), a grouting pipe (5) and a return slurry pipe (9). The two ends of the grouting pipe (5) are respectively communicated with the outlet end of the feedback barrel (17) and the bottom of the grouting hole (1), and the two ends of the return slurry pipe (9) are respectively communicated with the inlet end of the feedback barrel (17) and the upper part of the grouting hole (1), and it is characterized in that: A grouting pump (6), a first electromagnetic flowmeter (4), and a first pressure sensor (2) are successively arranged on the grouting pipe (5). A second pressure sensor (7), a pressure regulating valve (8), a second electromagnetic flowmeter (10), and a detection assembly (11) for detecting the fluid pressure in the return grouting pipe (9) are successively arranged on the return grouting pipe (9). The detection assembly (11) includes a U-shaped pipe (22) and a bracket (20) for supporting the U-shaped pipe (22). One end of the U-shaped pipe (22) is communicated with the end of the return grouting pipe (9) through a flexible hose. The other end of the U-shaped pipe (22) is respectively connected with a sewage discharge pipe (25) and a connecting hose (24) through a three-way valve, and the connecting hose (24) is communicated with the inlet end of the feedback bucket (17). Two side plates (26) are respectively arranged on the opposite side walls of the bracket (20), and the two side plates (26) are connected by a T-shaped plate (27). The two vertical sections of the U-shaped pipe (22) are connected by a connecting plate (21). A base (29) is arranged on one side plate (26). Two support plates (31) for supporting the middle part of the horizontal section of the U-shaped pipe (22) are rotatably arranged on the upper surface of the base (29). The side walls of the two support plates (31) on the same side are connected by a torsion spring (46). A rectangular groove (40) is formed in the base (29) along the axis of the horizontal section of the U-shaped pipe (22). A plurality of bottom rods (41) are distributed at intervals in the rectangular groove (40). The lower end of each bottom rod (41) is connected with the bottom of the rectangular groove (40) through a tension spring (42). The upper end of each bottom rod (41) is provided with a top block (43), and a pressure detector (44) that always keeps in contact with the middle part of the horizontal section of the U-shaped pipe (22) is arranged on the top block (43). A first connecting rod (32) is arranged on the side wall of one support plate (31). A first follower plate (33) perpendicular to its axis is arranged at the end of the first connecting rod (32). A first locking pin parallel to the first connecting rod (32) is arranged on the first follower plate (33). The end of the first locking pin is hinged with an inner side arm (35). A second connecting rod (36) with an axial length greater than that of the first connecting rod (32) is arranged on the side wall of the other support plate (31). A second follower plate (37) perpendicular to its axis is arranged at the end of the second connecting rod (36). A second locking pin parallel to the second connecting rod (36) is arranged on the second follower plate (37). The end of the second locking pin is hinged with an outer side arm (39). A pull rod is arranged on the vertical section of the T-shaped plate (27) along the vertical direction. A ball head is arranged at the upper end of the pull rod. A spherical cavity matching the ball head is formed at the bottom of the connecting plate (21). A rotating plate (30) is rotatably arranged on the side wall of the vertical section of the T-shaped plate (27). The two ends of the rotating plate (30) are respectively hinged with the end of the outer side arm (39) far from the support plate (31) and the end of the inner side arm (35) far from the support plate (31). A disk (45) with angle scales is arranged on the side wall of the vertical section of the T-shaped plate (27). The rotating plate (30) is rotatably arranged in the middle of the outer side wall of the disk (45).

2. The grouting anti-seepage device applicable to rock and soil cultural relics according to claim 1, characterized in that: The upper surfaces of the top blocks (43) are all arc-shaped and match the outer walls of the U-shaped tubes (22), and the pressure detectors (44) are placed in the middle of the arc bottoms of the upper surfaces of the top blocks (43).

3. The grouting anti-seepage device for rocky soil cultural relics according to claim 1, characterized in that: A detection flowmeter (28) for real-time monitoring of the fluid flow rate is also provided in the middle of the horizontal section of the U-shaped tube (22).

4. The grouting anti-seepage device for rock and soil cultural relics according to claim 1, characterized in that: The axial distance between the first connecting rod (32) and the first pin shaft (34) is greater than the axial distance between the second connecting rod (36) and the second pin shaft (38).

5. A grouting anti-seepage device applicable to rock and soil cultural relics according to any one of claims 1 to 4, characterized in that: A liquid level sensor is provided at the top of the feedback barrel (17), a fourth pressure sensor (19) is provided at the bottom of the feedback barrel (17), and a stirrer (18) is provided inside the feedback barrel (17).

6. The grouting and seepage prevention device for rock and soil cultural relics according to claim 5, characterized in that: A slurry mixing valve communicated with the feedback barrel (17) is provided at the top of the feedback barrel (17), and two feed ports respectively communicated with the clean water pipe (13) and the raw slurry pipe (15) are provided on the slurry mixing valve.

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