Overlying strata separation layer grouting well slurry return monitoring and early warning device

Abstract

The invention relates to the technical field of monitoring and early warning devices, and provides an overlying strata separation layer grouting water well slurry return monitoring and early warning device which adopts a closed access type design, is not only suitable for detection under a pressure environment, but also can be applied to differentiated monitoring of water and slurry, further improves the monitoring function, is higher in practicability, and is higher in practicability. The sleeve is more suitable for slurry return monitoring of an overlying strata separation layer grouting water well and comprises a sleeve body, a water well cylinder body and an installation assembly, the sleeve body is in threaded connection to the water well cylinder body, a pressure maintaining cylinder frame is connected to the sleeve body, the installation assembly comprises an external installation box, the external installation box is fixedly connected with the sleeve body, and a penetrating inclined pipe is fixedly connected into the external installation box. The inserting inclined pipe is inserted into the sleeve body, the inserting inclined pipe is communicated with a bent pipe, the bent pipe is communicated with a multi-stage telescopic pipe, the bottom end of the multi-stage telescopic pipe is fixedly connected with a monitoring frame, four mounting cavities are formed in the monitoring frame, pressure sensors are mounted in the four mounting cavities, and stress plates are slidably connected in the four mounting cavities.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring and early warning devices, and in particular to a grouting monitoring and early warning device for a grouting well in an overburden separation layer. Background Art

[0002] As we all know, the basic principle of overburden delamination grouting is to utilize the delamination space formed in the overburden during the movement of the rock strata, and to inject the filling material slurry into the delamination space at high pressure through holes arranged on the ground, so that the slurry is connected with the fracture zone rock mass as a whole, and the overburden stratum on the delamination space is supported to slow down its movement and propagate to the surface. In order to detect the grouting effect and grouting safety during the overburden delamination grouting process, we propose a grouting monitoring and early warning device for overburden delamination grouting water wells.

[0003] After searching, the Chinese patent application number CN202321391306.5 discloses a slurry return monitoring device and a drilling safety early warning system, which is roughly described as including a sleeve body and a floating structure. The sleeve body has an inner cavity, and the inner cavity is provided with a through hole for communicating with the slurry return tank. The floating structure is arranged in the inner cavity, and the floating structure slides with the inner cavity. When in use, it can effectively ensure the accuracy of liquid level monitoring, reduce the influence of human factors, and ensure safety.

[0004] Although the above-mentioned existing technical solutions can be applied to grouting monitoring, it is difficult to apply the single detection similar to slurry height that relies solely on buoyancy to the grouting monitoring and early warning process of overburden delamination grouting water wells. The matching is poor and the functionality needs to be further improved. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a grouting return monitoring and early warning device for grouting water wells with overburden rock delamination. The device adopts a closed access design and is not only suitable for detection under pressurized environment, but also can be used for differentiated monitoring of water and slurry, thereby further improving the monitoring function, being more practical, and being more suitable for grouting return monitoring in grouting water wells with overburden rock delamination.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grouting monitoring and early warning device for a grouting well in a rock separation layer, comprising a sleeve body, a water well body and a mounting assembly, the sleeve body being threadedly connected to the water well body, a pressure-maintaining cylinder frame being connected to the sleeve body, the mounting assembly comprising an external mounting box, the external mounting box being fixedly connected to the sleeve body, an interpenetrating inclined tube being fixedly connected inside the external mounting box, the interpenetrating inclined tube being inserted into the sleeve body, the interpenetrating inclined tube being connected to a bent tube, the bent tube being connected to a multi-stage telescopic tube, a monitoring frame being fixedly connected to the bottom end of the multi-stage telescopic tube, four mounting cavities being arranged on the monitoring frame, pressure sensors being installed in the four mounting cavities, force plates being slidably connected in the four mounting cavities, and elastic plates being fixedly connected to the four force plates. The four elastic springs are matched with four pressure sensors respectively, a central cavity is opened on the monitoring frame, the central cavity is connected with the multi-stage telescopic tube, two sinking cavities are installed in the central cavity, an inner groove is opened at the bottom of the monitoring frame, two glass openings are arranged in the inner groove, the two glass openings are connected with the two sinking cavities respectively, light-transmitting glass is installed in the two glass openings, a laser point emitter and a laser light receiving plate are installed in the two sinking cavities respectively, the laser point emitter is used to emit a laser beam, and the laser light receiving plate is used for light detection of the laser beam emitted by the laser point emitter, a rope loop is fixedly connected in the central cavity, the rope loop passes through the multi-stage telescopic tube and extends into the external installation box, a clamping positioning structure matching the rope loop is installed in the external installation box, and a corner door is installed on the external installation box.

[0007] Preferably, the clamping and positioning structure includes two counter-rotating clamping belts, the rope loop passes through the two counter-rotating clamping belts, and the two counter-rotating clamping belts are both provided with active vertical rollers and auxiliary vertical rollers. A middle branch partition plate is fixedly connected in the external installation box, and the two active vertical rollers and the two auxiliary vertical rollers are rotatably connected to the middle branch partition plate. A one-way ratchet is installed on the middle branch partition plate, and the one-way ratchet matches one of the two active vertical rollers.

[0008] Preferably, the top ends of the two active vertical rollers are fixedly connected with driving columns, and the two driving columns are provided with recessed notches.

[0009] Preferably, a plurality of counterweight balls are fixedly connected to the rope loop, and the plurality of counterweight balls are arranged at equal intervals on the rope loop.

[0010] Preferably, an access wire is provided in the rope loop, one end of which is electrically connected to the laser light receiving plate, the laser point transmitter and four pressure sensors, and a signal receiver is installed in the external installation box, and the signal receiver is electrically connected to the access wire.

[0011] Preferably, a rotating shaft is provided on the external installation box, a rotating sleeve is provided on the corner door, the rotating sleeve is rotatably connected to the rotating shaft, two limit rods are installed on the corner door, and two pin holes are provided in the external installation box, and the two pin holes are matched with the two limit rods respectively.

[0012] Preferably, the two limit rods are fixedly connected with a toggle plate, the two toggle plates are provided with mounting grooves, a pop-up spring is fixedly connected between the two mounting grooves, and the corner door is provided with a protruding strip matching the two toggle plates.

[0013] Preferably, an external pipe is installed on the pressure-maintaining cylinder rack, and an on-off valve is installed on the external pipe.

[0014] Compared with the prior art, the present invention provides a grouting monitoring and early warning device for a grouting well in an overburden rock separation layer, which has the following beneficial effects: 1. In the present invention, a corresponding pressure detection structure is formed by the cooperation of a monitoring frame, a pressure sensor, a force-bearing plate and an elastic spring, which is suitable for detection under a pressurized environment.

[0015] 2. In the present invention, through the cooperation of the laser point emitter and the laser light receiving plate, the transmittance of the water-slurry mixture in the water well is detected, thereby achieving the differentiated monitoring of water and slurry in the water well, further improving the monitoring function, and being more suitable for the return slurry monitoring of the overburden delamination grouting water well.

[0016] 3. In the present invention, through the design of the installation components, the matching monitoring frame can be installed correspondingly and the height of the monitoring frame can be adjusted at the same time, so as to facilitate the corresponding monitoring of different depths of the water well body, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention.

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Figure 3 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the monitoring frame, pressure sensor and force plate of the present invention.

[0021] Figure 5 It is a schematic diagram of the exploded three-dimensional structure of the monitoring frame, light-transmitting glass and laser point emitter of the present invention.

[0022] Figure 6It is a schematic diagram of a partially exploded three-dimensional structure of the cooperation of the external installation box, the corner door and the rotating shaft of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the active vertical roller, the auxiliary vertical roller and the middle supporting partition plate in cooperation with each other in the present invention.

[0024] Figure 8 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0025] In the figure: 1. Sleeve body; 2. Water well body; 3. Pressure-maintaining cylinder frame; 4. External installation box; 5. Inserted inclined pipe; 6. Bend pipe; 7. Multi-stage telescopic pipe; 8. Monitoring frame; 9. Installation cavity; 10. Pressure sensor; 11. Force plate; 12. Elastic spring; 13. Central cavity; 14. Sinking cavity; 15. Translucent glass; 16. Laser point transmitter; 17. Laser light receiving plate; 18. Rope loop; 19. Corner door; 2 0. Counter-rotating holding belt; 21. Active vertical roller; 22. Auxiliary vertical roller; 23. Middle branch partition plate; 24. One-way ratchet; 25. Driving column; 26. Recessed notch; 27. Counterweight ball; 28. Access wire; 29. ​​Signal receiver; 30. Rotating coupling; 31. Rotating sleeve; 32. Limit rod; 33. Pin hole; 34. Toggle plate; 35. Pop-up spring; 36. Extended strip; 37. External pipe; 38. On-off valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0027] See also Figure 1-Figure 8, a grouting water well return monitoring and early warning device for overburden rock separation grouting comprises a sleeve body 1, a water well body 2 and an installation assembly, the sleeve body 1 is threadedly connected to the water well body 2, a pressure-maintaining tube frame 3 is connected to the sleeve body 1, and the installation assembly comprises an external installation box 4, the external installation box 4 is fixedly connected to the sleeve body 1, an interpenetrating inclined tube 5 is fixedly connected inside the external installation box 4, the interpenetrating inclined tube 5 is inserted into the sleeve body 1, the interpenetrating inclined tube 5 is connected with a bent tube 6, the bent tube 6 is connected with a multi-stage telescopic tube 7, the bottom end of the multi-stage telescopic tube 7 is fixedly connected with a monitoring frame 8, four installation cavities 9 are arranged on the monitoring frame 8, pressure sensors 10 are installed in the four installation cavities 9, force plates 11 are slidably connected in the four installation cavities 9, the four force plates 11 are fixedly connected with elastic springs 12, the four elastic springs 12 are matched with the four pressure sensors 10 respectively, through the monitoring frame 8, the pressure sensor 10, the force plate 11 and the elastic springs The cooperation of the spring 12 forms a corresponding pressure detection structure, which is suitable for detection under pressurized environment. A central cavity 13 is provided on the monitoring frame 8, and the central cavity 13 is connected with the multi-stage telescopic tube 7. Two sinking cavities 14 are installed in the central cavity 13. An inner groove is provided at the bottom of the monitoring frame 8. Two glass openings are arranged in the inner groove. The two glass openings are respectively connected with the two sinking cavities 14. Transparent glass 15 is installed in the two glass openings. The two sinking cavities 14 are respectively installed with a laser point emitter 16 and a laser light receiving plate 17. The laser point emitter 16 is used to emit a laser beam, and the laser light receiving plate 17 is used to detect the light emitted by the laser point emitter 16. Through the cooperation of the laser point emitter 16 and the laser light receiving plate 17, the transmittance of the water-slurry mixture in the water well is detected, thereby achieving the differentiated monitoring of water and slurry in the water well, further improving the monitoring function, and being more suitable for the return slurry monitoring of overburden delamination grouting water wells.

[0028] It should be further explained that a rope loop 18 is fixedly connected in the central cavity 13, and the rope loop 18 passes through the multi-stage telescopic tube 7 and extends into the external installation box 4. A clamping and positioning structure matching the rope loop 18 is installed in the external installation box 4. The clamping and positioning structure includes two counter-rotating clamping belts 20, and the rope loop 18 passes through the two counter-rotating clamping belts 20. Active vertical rollers 21 and auxiliary vertical rollers 22 are arranged in the two counter-rotating clamping belts 20. A middle branch partition plate 23 is fixedly connected in the external installation box 4. The two active vertical rollers 21 and the two auxiliary vertical rollers 22 are rotatably connected to the middle branch partition plate 23, and the middle branch partition plate 23 is installed with The one-way ratchet 24 is matched with one of the two active vertical rollers 21. A corner door 19 is installed on the external installation box 4. Through the design of the installation component, the matching monitoring frame 8 is installed in a corresponding manner and the height of the monitoring frame 8 can be adjusted to facilitate the corresponding monitoring of different depths of the water well barrel 2. It is more practical. The tops of the two active vertical rollers 21 are fixedly connected with driving columns 25. The two driving columns 25 are provided with recessed notches 26. A plurality of counterweight balls 27 are fixedly connected to the rope loop 18. The plurality of counterweight balls 27 are arranged at equal intervals on the rope loop 18. An access wire 28 is provided in the rope loop 18, one end of which is electrically connected to the laser light receiving plate 17, the laser point transmitter 16 and the four pressure sensors 10. A signal receiver 29 is installed in the external installation box 4, and the signal receiver 29 is electrically connected to the access wire 28. A rotating shaft 30 is provided on the external installation box 4, and a rotating sleeve 31 is provided on the corner door 19. The rotating sleeve 31 is rotatably connected to the rotating shaft 30. Two limit rods 32 are installed on the corner door 19. Two pin holes 33 are provided in the external installation box 4. The two pin holes 33 are matched with the two limit rods 32 respectively. The two limit rods 32 are connected to the two limit rods 32. A toggle plate 34 is fixedly connected to the rod 32, and the two toggle plates 34 are provided with installation grooves, and a pop-up spring 35 is fixedly connected between the two installation grooves. An extension strip 36 matching the two toggle plates 34 is provided on the corner door 19 to facilitate the exposure of the two toggle plates 34. The two limit rods 32 can be pulled out relative to the two pin holes 33 by toggling the two toggle plates 34, respectively, to facilitate the rotation and opening of the corner door 19. An external pipe 37 is installed on the pressure-maintaining cylinder frame 3, and an on-off valve 38 is installed on the external pipe 37 to facilitate the connection with the external grouting equipment and the pressure-maintaining operation after the grouting is completed.

[0029] In summary, the working principle of the grouting monitoring and early warning device for overburden rock delamination grouting water well is as follows: when in use, firstly, the sleeve body 1 is installed relative to the water well body 2, and at the same time, the pressure-maintaining cylinder frame 3 is installed relative to the sleeve body 1, and then the external grouting equipment is connected through the external pipe 37, and the on-off valve 38 is opened. Grouting is injected into the water well body 2 through the external grouting equipment. After the grouting is completed, the on-off valve 38 is closed to realize the pressure maintenance of the material in the water well body 2. During the pressure maintenance process, the corner valve 38 is opened. The door 19 realizes the synchronous rotation drive of the two rotating clamping belts 20 by rotating any one of the two active vertical rollers 21, thereby realizing the placement and pulling out of the rope loop 18 in the central cavity 13. Due to the effect of the counterweight ball 27, the rope loop 18 can be smoothly placed in the central cavity 13, and when the rope loop 18 is pulled out in the multi-stage telescopic tube 7, it can be tightened. By controlling the number of counterweight balls 27 placed in the central cavity 13, the weight in the monitoring frame 8 can be adjusted, which facilitates the adjustment of the depth of the monitoring frame 8 immersed in the pressure-maintaining material in the water well barrel 2. During the monitoring process, since the pressure-maintaining material in the water well barrel 2 has a certain pressure, the four force-bearing plates 11 will be pushed by the pressure, and then the pushed force-bearing plates 11 will form a force acting on the pressure sensor 10 through the elastic spring 12, so as to detect the pressure value of the pressure-maintaining material in the water well barrel 2. At the same time, since the slurry has a poor light transmittance, and pure water has a good light transmittance, the laser beam is emitted by the laser point emitter 16, and the laser light receiving plate 17 realizes the light receiving detection of the laser beam emitted by the laser point emitter 16. , the light transmittance of the material in the inner groove can be detected, and then the slurry concentration can be detected. In most cases, the slurry concentration is greater than the density of pure water, so the water well body 2 will show separation of the upper water layer and the lower layer slurry. Therefore, by detecting the light transmittance at different depths in the water well body 2, the return of the slurry injected into the overburden separation layer can be detected. The data monitored during the monitoring process is finally collected at the signal receiver 29. The signal receiver 29 has signal recording and wireless communication functions, which are used to upload and alarm the monitoring data.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grouting water well return monitoring and early warning device for overburden separation layer, comprising a sleeve body (1), characterized in that: It also comprises a water well barrel (2) and a mounting assembly, wherein the sleeve body (1) is threadedly connected to the water well barrel (2), the sleeve body (1) is connected to a pressure-maintaining barrel frame (3), the mounting assembly comprises an external mounting box (4), the external mounting box (4) is fixedly connected to the sleeve body (1), an interpenetrating inclined tube (5) is fixedly connected inside the external mounting box (4), the interpenetrating inclined tube (5) is inserted into the sleeve body (1), the interpenetrating inclined tube (5) is connected to a bent tube (6), the bent tube (6) is connected to a multi-stage telescopic tube (7), the bottom end of the multi-stage telescopic tube (7) is fixedly connected to a monitoring frame (8), the monitoring frame (8) is provided with four mounting cavities (9), pressure sensors (10) are installed in the four mounting cavities (9), force plates (11) are slidably connected in the four mounting cavities (9), the four force plates (11) are fixedly connected to elastic springs (12), and the four elastic springs (12) are matched with four pressure sensors (10) respectively. The monitoring frame (8) is provided with a central cavity (13), the central cavity (13) is connected to the multi-stage telescopic tube (7), two sinking cavities (14) are installed in the central cavity (13), an inner groove is provided at the bottom end of the monitoring frame (8), two glass openings are provided in the inner groove, the two glass openings are respectively connected to the two sinking cavities (14), light-transmitting glass (15) is installed in the two glass openings, and the two sinking cavities (14) are respectively installed with a laser point emitter (16) and a laser receiver The light board (17) is used for emitting a laser beam by the laser point emitter (16); the laser light receiving board (17) is used for detecting the light received by the laser beam emitted by the laser point emitter (16); a rope loop (18) is fixedly connected in the central cavity (13); the rope loop (18) passes through the multi-stage telescopic tube (7) and extends into the external installation box (4); a clamping positioning structure matching the rope loop (18) is installed in the external installation box (4); and a corner door (19) is installed on the external installation box (4).

2. The grouting monitoring and early warning device for grouting wells in overburden separation layer according to claim 1 is characterized in that: The clamping and positioning structure comprises two counter-rotating clamping belts (20), the rope loop (18) passes through the two counter-rotating clamping belts (20), both counter-rotating clamping belts (20) are provided with active vertical rollers (21) and auxiliary vertical rollers (22), a middle branch partition plate (23) is fixedly connected inside the external installation box (4), the two active vertical rollers (21) and the two auxiliary vertical rollers (22) are rotatably connected to the middle branch partition plate (23), a one-way ratchet (24) is installed on the middle branch partition plate (23), and the one-way ratchet (24) matches one of the two active vertical rollers (21).

3. The grouting monitoring and early warning device for grouting wells in overburden separation layer according to claim 2 is characterized in that: The top ends of the two active vertical rollers (21) are fixedly connected to driving columns (25), and the two driving columns (25) are provided with recessed notches (26).

4. The grouting monitoring and early warning device for overburden separation grouting wells according to claim 3 is characterized in that: A plurality of counterweight balls (27) are fixedly connected to the rope loop (18), and the plurality of counterweight balls (27) are arranged at equal intervals on the rope loop (18).

5. The grouting monitoring and early warning device for grouting wells in overburden separation layer according to claim 4 is characterized in that: An access wire (28) is arranged in the rope loop (18), one end of which is electrically connected to the laser light receiving plate (17), the laser point transmitter (16) and the four pressure sensors (10), and a signal receiver (29) is installed in the external installation box (4), and the signal receiver (29) is electrically connected to the access wire (28).

6. The grouting monitoring and early warning device for grouting wells in overburden separation layer according to claim 5 is characterized in that: The external installation box (4) is provided with a rotating shaft (30), the corner door (19) is provided with a rotating sleeve (31), the rotating sleeve (31) is rotatably connected to the rotating shaft (30), two limit rods (32) are installed on the corner door (19), and two pin holes (33) are provided in the external installation box (4), and the two pin holes (33) are matched with the two limit rods (32) respectively.

7. The grouting monitoring and early warning device for grouting wells in overburden separation layer according to claim 6 is characterized in that: The two limit rods (32) are both fixedly connected to a toggle plate (34), the two toggle plates (34) are both provided with a mounting groove, a pop-up spring (35) is fixedly connected between the two mounting grooves, and the corner door (19) is provided with a protruding strip opening (36) matching the two toggle plates (34).

8. The grouting monitoring and early warning device for grouting wells in overburden separation layer according to claim 7 is characterized in that: An external pipe (37) is installed on the pressure-maintaining cylinder frame (3), and an on-off valve (38) is installed on the external pipe (37).

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