A concrete dam curtain grouting construction system and its construction method

Abstract

The present invention belongs to the technical field of grouting, and particularly relates to a curtain grouting construction system for a concrete dam, comprising: a base, on which a drilling rig is arranged, and a power head is arranged on the drilling rig; a hanger, which is arranged on the ground, and a pulley is arranged at the top of the hanger; a hoisting device, which is arranged on the drilling rig; a drill pipe, which passes through the power head, and a slurry inlet part is arranged at the top of the drill pipe; a slurry inlet pipe, which is connected to the slurry inlet part; a control part, which is arranged on the drilling rig, and the control part includes a plurality of operating rods and a distribution box equipped with control elements; a protective sleeve rod, which is arranged at the bottom of the power head; wherein, the protective sleeve rod is sleeved outside the drill pipe. Compared with the prior art, the present invention improves the working stability and working life of the curtain grouting construction system.

Description

Technical Field

[0001] The present invention belongs to the technical field of grouting, and particularly relates to a curtain grouting construction system for a concrete dam and a construction method thereof. Background Art

[0002] Curtain grouting is a common waterproof and reinforcement measure in underground engineering, and is widely used in projects such as dams, tunnels, subways, etc. During the curtain grouting process, the slurry usually includes a conventional slurry composed of cement, chemical additives and water, as well as some special slurries, which are poured into the underground rock formation to form a water isolation layer. The curtain grouting system usually consists of structures such as a drill rig, drill pipes, a grout inlet pipe, a grout pump and a slurry storage mixer. The slurry storage mixer is used to store the slurry to be injected, and usually includes a storage barrel with a heating unit and a stirring structure installed on the storage barrel to ensure that the slurry remains uniform during the grouting process and avoid precipitation or stratification. The grout pump is responsible for pumping the slurry from the slurry storage mixer to the grout inlet pipe, and the grout inlet pipe is responsible for transporting the slurry from the grout pump to the underground grouting hole or working face;

[0003] During the use of this existing curtain grouting construction system, the grout inlet pipe is usually connected to the drill pipe to transport the slurry downward through the drill pipe. However, there is a lack of necessary protection between the drill pipe and the power head of the drill rig. During the process of compression displacement and vibration of the drill pipe, the drill pipe is prone to self-damage and damage to the power head, reducing the working stability and working life of the curtain grouting construction system. At the same time, when used in cold outdoor environments, the heat preservation effect of the slurry storage mixer on the slurry is not ideal, and lumps are likely to form in the slurry, thus blocking the grout inlet pipe, further reducing the working stability of the curtain grouting construction system. Therefore, it is necessary to make improvements. Summary of the Invention

[0004] The purpose of the present invention is to provide a curtain grouting construction system for a concrete dam and a construction method thereof in view of the above existing technical problems, so as to improve the working stability of the curtain grouting construction system.

[0005] In view of this, the present invention provides a curtain grouting construction system for a concrete dam, including:

[0006] A base, on which a drill rig is provided, and a power head is provided on the drill rig;

[0007] A hanger, which is arranged on the ground, and a pulley is arranged at the top of the hanger;

[0008] A hoisting device, which is arranged on the drill rig;

[0009] A drill pipe, which penetrates through the power head, and a grout inlet part is arranged at the top of the drill pipe;

[0010] A grout inlet pipe, which is connected to the grout inlet part;

[0011] A control unit, which is arranged on the drilling rig and includes a number of operating rods and a distribution box equipped with control elements;

[0012] A protective sleeve rod, which is arranged at the bottom of the power head;

[0013] Wherein, the protective sleeve rod is sleeved outside the drill pipe.

[0014] In this technical solution, through the setting of the protective sleeve rod, the drill pipe can be effectively protected, preventing the drill pipe from being damaged itself and causing damage to the power head during the process of being compressed, displaced and vibrating, improving the working stability and working life of the curtain grouting construction system.

[0015] In the above technical solution, further, it also includes:

[0016] A slurry storage and mixer, which includes a storage barrel with a heating unit and a stirring mechanism arranged on the storage barrel;

[0017] A control unit, which is arranged on the side wall of the storage barrel;

[0018] Wherein, the slurry inlet pipe is connected to the storage barrel through a grouting pump, and the heating unit is an electric heating wire arranged in the barrel wall of the storage barrel.

[0019] In the above technical solution, further, it also includes:

[0020] A number of baffle plates, which are arranged on the inner wall of the storage barrel and are evenly spaced along the circumferential direction of the storage barrel;

[0021] Wherein, the baffle plate extends bent from the top to the bottom of the storage barrel.

[0022] In the above technical solution, further, the baffle plate is in the shape of a mesh plate.

[0023] In the above technical solution, further, the stirring mechanism also includes:

[0024] A stirring motor, which is arranged at the top of the storage barrel through a motor bracket;

[0025] A stirring shaft, which is rotatably arranged in the storage barrel;

[0026] A stirring part, which is arranged at the bottom end of the stirring shaft, and the stirring part includes a number of stirring blades with variable angles;

[0027] A stirring blade control part, which is arranged at the top of the storage barrel;

[0028] Among them, both the stirring part and the stirring blade control are electrically connected to the control unit, and the stirring blade control can control the change of the stirring blade angle according to the increase of the stirring shaft speed.

[0029] In the above technical solution, further, the stirring part further includes:

[0030] A central shaft, which is arranged at the bottom end of the stirring shaft, and a rotating cavity is arranged inside the central shaft;

[0031] Arc-shaped sliding grooves, which are arranged on the side wall of the central shaft and penetrate into the rotating cavity. There are several arc-shaped sliding grooves, and several arc-shaped sliding grooves are evenly spaced along the circumferential direction of the central shaft;

[0032] Sliding blocks, which are slidably arranged on the arc-shaped sliding grooves;

[0033] A rotating disk, which is rotatably arranged in the rotating cavity. A number of limiting clamping plates are arranged on the surface of the rotating disk, and several limiting clamping plates are evenly spaced along the circumferential direction of the rotating disk;

[0034] An installation shell, which is arranged at the bottom of the central shaft, and a rotating motor is arranged in the installation shell;

[0035] Among them, the root of the stirring blade is connected to the outer end of the sliding block, the inner end of the sliding block is matched with the limiting clamping plate and moves along the arc-shaped sliding groove driven by the rotating disk, and the driving end of the rotating motor is connected to the rotating disk.

[0036] In the above technical solution, further, the stirring blade control further includes:

[0037] A first housing, which is arranged on the top of the storage barrel, and a rotating shaft is rotatably arranged inside the first housing;

[0038] Several rod groups, each rod group consists of two rods. Several rod groups are symmetrically distributed along the radial direction of the rotating shaft and are evenly spaced along the axial direction of the rotating shaft. An adsorption magnet is arranged at the bottom of the rod group, and a limiting cover is arranged at the top of the rod group;

[0039] Control buttons, there are several control buttons, and the control buttons are arranged on the surface of the rotating shaft and at the bottom of the rod group;

[0040] Button pressing blocks, there are several button pressing blocks, and the button pressing blocks are movably arranged on the rod group;

[0041] A second housing, which is arranged on the top of the storage barrel, and a conductive rod is rotatably arranged in the second housing. The conductive rod is coaxially connected to the rotating rod, and a conductive disk is arranged at the end of the conductive rod away from the rotating rod;

[0042] A conductive clip is provided in the second housing, and a conductive brush head is provided at the end of the conductive clip.

[0043] Wherein, the rotating shaft is in transmission connection with the stirring shaft through a bevel gear set, the suction force of the adsorption magnets at the bottoms of several rod groups increases in sequence, the button pressing block can be adsorbed by the adsorption magnets, the edge of the conductive disc is located in the conductive clip, the end of the conductive brush head is in electrical contact with the conductive disc, and the conductive clip is electrically connected to the control unit.

[0044] In the above technical solution, further, the conductive brush head further includes:

[0045] A brush head seat, a connection cavity is provided in the brush head seat, and a hole communicating with the connection cavity is provided at the end of the brush head seat;

[0046] A brush head body, the brush head body is inserted through the hole, and a connection convex ring is provided at the bottom end of the brush head body;

[0047] Conductive springs, there are several conductive springs and they are evenly distributed in the connection cavity, one end of the conductive spring is connected to the brush head body, and the other end is connected to the bottom surface of the connection cavity;

[0048] A first conductive block is provided on the outer wall of the connection convex ring;

[0049] A first conductive sliding groove, the first conductive sliding groove is provided on the inner arm of the connection cavity, and a V-shaped conductive spring piece is provided in the first conductive sliding groove;

[0050] A conical cavity is provided in the brush head body and forms an orifice at the bottom of the brush head body, and two second conductive sliding grooves are symmetrically distributed along the radial direction of the brush head body on the inner wall of the conical cavity;

[0051] A second conductive block is slidably provided in the second conductive sliding groove;

[0052] A pre-tightening spring piece is provided between the two second conductive blocks;

[0053] An elastic conductive column is provided in the connection cavity;

[0054] Wherein, the outer wall of the connection convex ring is in electrical contact with the inner wall of the connection cavity, the first conductive block can move in the first conductive sliding groove and the first conductive block is clamped in the V-shaped conductive spring piece, one end of the elastic conductive column is connected to the second conductive block, and the other end is connected to the bottom of the connection cavity.

[0055] In the above technical solution, further, the present invention also discloses a construction method applicable to the above concrete dam curtain grouting construction system, including the following steps:

[0056] S1 Arrange a grouting system on the construction hole and prepare the grout.

[0057] S2 Carry out drilling and grouting in sequence.

[0058] S3 During the drilling and grouting process, control the operation of the slurry storage mixer to maintain the uniformity of the slurry.

[0059] In the above technical solution, further, the step S3 further includes:

[0060] S30 In the first stirring stage, the control unit controls the start of the stirring motor. At this time, the stirring blades are in the initial state, and the angle between the stirring blades and the horizontal plane is 10 - 30°. When the stirring motor drives the stirring shaft to rotate, the rotating shaft rotates together under the action of the bevel gear set, and the slurry is stirred under the action of the stirring blades.

[0061] S31 In the second stirring stage, as the rotation speed of the stirring shaft increases, the one with the smallest adsorption force in the button pressing block is thrown to the outer end of the rod group under the action of centrifugal force, overcoming the suction force of the adsorption magnet. At this time, the corresponding control button is released, and the electrical signal is transmitted to the control unit through the second housing, the conductive brush head and the conductive clip. The control unit controls the rotation of the rotating motor to drive the rotating disc to rotate. When the rotating disc rotates, it drives the slider to move along the arc-shaped chute through the limit clamping plate, and finally adjusts the stirring blades. After adjustment, the stirring blades are in the second state, and the angle between the stirring blades and the horizontal plane is 30 - 50°.

[0062] S32 In the third stirring stage, as the rotation speed of the stirring shaft further increases, one of the button pressing blocks further overcomes the adsorption of the adsorption magnet with a larger adsorption force, thus releasing a corresponding control button, and the stirring blades are adjusted again and enter the third state. The angle between the stirring blades and the horizontal plane is 50 - 70°.

[0063] S33 In the final stirring stage, after the rotation speed of the stirring shaft reaches the highest, the last button pressing block overcomes the suction force of the adsorption magnet with the largest adsorption force, thus releasing the last control button, and the stirring blades are adjusted to the final state. The angle between the stirring blades and the horizontal plane is 70 - 90°.

[0064] In this technical solution, during the grouting operation, the slurry storage mixer can effectively maintain the uniformity of the slurry, improve the working stability of the curtain grouting construction system. At the same time, during the slurry stirring process, by gradually increasing the motor rotation speed and coordinating with the angle adjustment of the stirring blades, it can effectively reduce the load of the stirring motor while ensuring the slurry stirring effect, reduce energy consumption, and prevent the motor from overheating and damage, further improving the working stability of the curtain grouting construction system.

[0065] The beneficial effects of the present invention are:

[0066] 1. The setting of the protective sleeve rod can effectively prevent the drill rod from being damaged during the process of pressure displacement vibration and the damage to the power head, thereby improving the working stability and service life of the curtain grouting construction system;

[0067] 2. The blocking plate can intercept the agglomerated slurry, increase the contact time between the slurry and the inner wall of the storage barrel, thereby increasing the heating time of the slurry, effectively preventing the slurry from agglomerating in the cold outdoor environment, improving the uniformity of the slurry, and preventing the slurry from clogging the slurry inlet pipe;

[0068] 3. The setting of the stirring mechanism can effectively reduce the load of the stirring motor while ensuring the slurry stirring effect, reduce energy consumption, and prevent the motor from overheating and damage, further improving the working stability of the curtain grouting construction system. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0070] Figure 1 It is a schematic structural diagram of a specific implementation method of the present invention.

[0071] Figure 2 It is a schematic diagram of the structure of the slurry storage mixer of the present invention.

[0072] Figure 3 It is a schematic diagram of the storage barrel structure of the present invention.

[0073] Figure 4 It is a schematic diagram of the stirring shaft structure of the present invention.

[0074] Figure 5 It is a schematic diagram of the structure of the stirring part of the present invention.

[0075] Figure 6 This is a schematic diagram of the structure of the stirring blade control component of the present invention.

[0076] Figure 7 It is a schematic diagram of the structure of the conductive brush head of the present invention.

[0077] Figure 8 It is a schematic diagram of the structure of the second conductive block of the present invention.

[0078] Figure 9 It is a schematic diagram of the V-shaped conductive spring structure of the present invention.

[0079] The symbols in the figure are:

[0080] 1. Base; 2. Drilling rig; 200. Power head; 3. Hanger; 300. Suspension pulley; 4. Hoisting device; 5. Drill pipe; 500. Slurry inlet section; 6. Slurry inlet pipe; 7. Control section; 8. Protective sleeve rod; 9. Storage barrel; 10. Stirring mechanism; 100. Stirring motor; 101. Stirring shaft; 102. Stirring section; 1020. Stirring blade; 1021. Central shaft; 1022. Rotating cavity; 1023. Arc-shaped chute; 1024. Slide block; 1025. Rotating disk; 1026. Limit clamping plate; 1027. Installation shell; 1028. Rotating motor; 11. Control unit; 12. Material blocking plate; 13. Stirring blade control part; 130. First shell; 131. Rotating shaft; 132. Rod group; 133. Adsorption magnet; 134. Limit cover; 135. Control button; 136. Button pressing block; 137. Second shell; 138. Conductive rod; 139. Conductive disk; 1310. Conductive clip; 1311. Bevel gear set; 14. Conductive brush head; 140. Brush head seat; 141. Connecting cavity; 142. Brush head body; 143. Connecting convex ring; 145. Conductive spring; 146. First conductive block; 147. First conductive chute; 148. V-shaped conductive spring piece; 149. Conical cavity; 1410. Second conductive chute; 1411. Second conductive block; 1412. Pre-tightening spring piece; 1413. Elastic conductive column. Detailed implementation manners

[0081] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0082] In the description of the present application, it should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0083] An embodiment of the present application provides a concrete dam curtain grouting construction system, including: a base 1, on which a drilling rig 2 is provided, and a power head 200 is provided on the drilling rig 2; a hanging bracket 3, which is arranged on the ground, and a hanging wheel 300 is provided at the top of the hanging bracket 3; a hoisting device 4, which is arranged on the drilling rig 2; a drill pipe 5, which is penetrated through the power head 200, and a grout inlet part 500 is provided at the top of the drill pipe 5; a grout inlet pipe 6, which is connected to the grout inlet part 500; a control part 7, which is arranged on the drilling rig 2, and the control part 7 includes a plurality of operating rods and a distribution box installed with control elements; a protective sleeve rod 8, which is arranged at the bottom of the power head 200;

[0084] Wherein, the protective sleeve rod 8 is sleeved outside the drill pipe 5.

[0085] Moreover, the protective sleeve rod is in a hollow rod shape, extends vertically downward from the bottom of the power head, and the inner diameter of the protective sleeve rod is less than or equal to the diameter of the drill pipe.

[0086] In this embodiment, the drill pipe 5 can be effectively protected through the arrangement of the protective sleeve rod 8. When the drill pipe is displaced and vibrated under pressure during the working process, the drill pipe swings in the radial direction. At this time, the protective sleeve rod can effectively limit the displacement of the drill pipe and reduce the force arm of the force when the drill pipe displacement vibration generates a bending trend, preventing the drill pipe 5 from being damaged during the process of being displaced and vibrated under pressure and preventing the power head 200 from being damaged, improving the working stability and working life of the curtain grouting construction system.

[0087] An embodiment of the present application provides a concrete dam curtain grouting construction system. In addition to including the technical solutions of the above embodiment, it also has the following technical features, and further includes: a slurry storage mixer, which includes a storage barrel 9 with a heating unit and a stirring mechanism 10 arranged on the storage barrel 9; a control unit 11, which is arranged on the side wall of the storage barrel 9;

[0088] Wherein, the grout inlet pipe 6 is connected to the storage barrel 9 through a grouting pump, and the heating unit is an electric heating wire arranged in the barrel wall of the storage barrel 9.

[0089] It further includes: a plurality of baffle plates 12, which are arranged on the inner wall of the storage barrel 9, and the plurality of baffle plates 12 are evenly spaced along the circumferential direction of the storage barrel 9;

[0090] Wherein, the baffle plate 12 extends curvedly from the top to the bottom of the storage barrel 9.

[0091] The baffle plate is in a mesh plate shape.

[0092] Moreover, the heating unit is a conventional electric heating wire structure, and is controlled through the control unit 11.

[0093] In this embodiment, the slurry in the storage barrel 9 is stirred by the stirring mechanism 10 to maintain the uniformity of the slurry. When in an outdoor cold environment, the heating unit is started to heat the slurry in the storage barrel 9 to prevent the slurry from caking. At the same time, during the process of the slurry being stirred by the stirring mechanism 10, the caked slurry will move towards the barrel wall of the storage barrel 9 under the action of centrifugal force. When the caked slurry moves to the barrel wall, the baffle plate 12 can intercept the caked slurry. After being intercepted, the caked slurry stays on the baffle plate 12 and finally is fully heated and dissolved after long-term contact with the barrel wall. After the caked slurry is dissolved, it fully integrates into the liquid slurry. Compared with the prior art, the present invention can effectively improve the heating effect on the caked slurry, thereby further improving the uniformity of the slurry, preventing the phenomenon of the caked slurry blocking the slurry inlet pipe 6, and improving the working stability of the curtain grouting construction system.

[0094] This embodiment provides a curtain grouting construction system for a concrete dam. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The stirring mechanism 10 further includes: a stirring motor 100, the stirring motor 100 is arranged at the top of the storage barrel 9 through a motor bracket; a stirring shaft 101, the stirring shaft 101 is rotatably arranged in the storage barrel 9; a stirring part 102, the stirring part 102 is arranged at the bottom of the stirring shaft 101, and the stirring part 102 includes a plurality of stirring blades 1020 with variable angles; a stirring blade control member 13, the stirring blade control member 13 is arranged on the top of the storage barrel 9;

[0095] Among them, both the stirring part 102 and the stirring blade control member 13 are electrically connected to the control unit 11, and the stirring blade control member 13 can control the angle change of the stirring blades 1020 according to the increase in the rotation speed of the stirring shaft 101.

[0096] The stirring part 102 further includes: a central shaft 1021, the central shaft 1021 is arranged at the bottom of the stirring shaft 101, and a rotating cavity 1022 is arranged inside the central shaft 1021; an arc-shaped chute 1023, the arc-shaped chute 1023 is arranged on the side wall of the central shaft 1021 and penetrates through to the rotating cavity 1022, and there are a plurality of arc-shaped chutes 1023, and the plurality of arc-shaped chutes 1023 are evenly spaced along the circumferential direction of the central shaft 1021; a slider 1024, the slider 1024 is slidably arranged on the arc-shaped chute 1023; a rotating disk 1025, the rotating disk 1025 is rotatably arranged in the rotating cavity 1022, and a plurality of limiting clamping plates 1026 are arranged on the surface of the rotating disk 1025, and the plurality of limiting clamping plates 1026 are evenly spaced along the circumferential direction of the rotating disk 1025; a mounting shell 1027, the mounting shell 1027 is arranged at the bottom of the central shaft 1021, and a rotating motor 1028 is arranged in the mounting shell 1027;

[0097] Among them, the root of the stirring blade 1020 is connected to the outer end of the slider 1024. The inner end of the slider 1024 cooperates with the limiting clamping plate 1026 and moves along the arc-shaped chute 1023 driven by the rotating disk 1025. The driving end of the rotating motor 1028 is connected to the rotating disk 1025.

[0098] Moreover, the bottom of the installation shell 1027 also has a conventional motion power supply structure, such as a brush and a slip ring. The power supply structure is electrically connected to the control unit 11.

[0099] In this embodiment, when the stirring mechanism 10 stirs the slurry, the stirring motor 100 starts to drive the stirring shaft 101 to rotate. At this time, the angle between the stirring blade 1020 and the horizontal plane is small, and the resistance received by the stirring blade 1020 when driving the slurry to rotate is also small. Therefore, the resistance received by the stirring motor 100 when driving the stirring shaft 101 to rotate is small, effectively reducing the load during the startup process of the stirring motor 100. As the stirring motor 100 increases the rotation speed, the slurry is stirred and rotates in the storage bucket 9. At this time, the stirring blade control member 13 controls the rotating motor 1028 to rotate, and the rotating disk 1025 drives the limiting clamping plate 1026 to rotate as the rotating motor 1028 rotates. During the rotation of the limiting clamping plate 1026, the slider 1024 is driven to move along the arc-shaped chute 1023. Due to the curvature of the arc-shaped chute 1023, the slider 1024 will drive the stirring blade 1020 connected to it to move during the movement, thereby changing the angle between the stirring blade 1020 and the horizontal plane. After the angle of the stirring blade 1020 increases, the stirring effect on the slurry is improved, thereby further increasing the rotation speed of the slurry. And because the slurry is already in a rotating state, the state change of the stirring blade 1020 at this time will not further increase the load of the stirring motor 100. As the stirring motor 100 continuously increases the rotation speed of the stirring shaft 101, the stirring blade 1020 continuously adjusts its state under the control of the stirring control member and stabilizes to stir the slurry after adjusting to the final state, maintaining the uniformity of the slurry. Compared with the prior art, the present invention can effectively reduce the load of the stirring motor 100 while ensuring the stirring effect of the slurry, reducing energy consumption, preventing the stirring motor 100 from overheating and being damaged, and further improving the working stability of the curtain grouting construction system.

[0100] This embodiment provides a curtain grouting construction system for concrete dams. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The stirring blade control member 13 further includes: a first housing 130, the first housing 130 is arranged on the top of the storage barrel 9, and a rotating shaft 131 is rotatably arranged in the first housing 130; a plurality of rod groups 132, the rod groups 132 are composed of two rod groups 132, the plurality of rod groups 132 are symmetrically distributed along the radial direction of the rotating shaft 131 and are evenly spaced along the axial direction of the rotating shaft 131, an adsorption magnet 133 is arranged at the bottom of the rod group 132, and a limit cover 134 is arranged at the top of the rod group 132; control buttons 135, there are several control buttons 135, the control buttons 135 are arranged on the surface of the rotating shaft 131 and at the bottom of the rod group 132; button pressing blocks 136, there are several button pressing blocks 136, the button pressing blocks 136 are movably arranged on the rod group 132; a second housing 137, the second housing 137 is arranged on the top of the storage barrel 9, a conductive rod 138 is rotatably arranged in the second housing 137, the conductive rod 138 is coaxially connected with the rotating rod, and a conductive disk 139 is arranged at the end of the conductive rod 138 away from the rotating rod; a conductive clip 1310, the conductive clip 1310 is arranged in the second housing 137, and a conductive brush head 14 is arranged at the end of the conductive clip 1310.

[0101] Among them, the rotating shaft 131 is in transmission connection with the stirring shaft 101 through a bevel gear set 1311. The suction force of the adsorption magnets 133 at the bottoms of the plurality of rod groups 132 increases in sequence. The button pressing blocks 136 can be adsorbed by the adsorption magnets 133. The edge of the conductive disk 139 is located in the conductive clip 1310. The end of the conductive brush head 14 is in electrical contact with the conductive disk 139. The conductive clip 1310 is electrically connected to the control unit 11.

[0102] Moreover, the rotating rod has a cavity inside, and conventional electric wires can be distributed in the cavity. The electric wires are respectively connected to the buttons and the conductive sheets. The bottom of the rod is fixedly connected to the rotating rod, and the length direction of the rod extends along the radial direction of the rotating rod.

[0103] In this embodiment, the control unit 11 controls the stirring motor 100 to start. At this time, the stirring blade 1020 is in the initial state. When the stirring motor 100 drives the stirring shaft 101 to rotate, the rotating shaft 131 rotates together under the action of the bevel gear set 1311. As the rotation speed of the stirring shaft 101 increases, the one with the smallest adsorption force in the button pressing block 136 is thrown to the outer end of the rod group 132 under the action of centrifugal force, overcoming the suction force of the adsorption magnet 133. At this time, the corresponding control button 135 is released, and the electrical signal is transmitted to the control unit 11 through the second housing 137, the conductive brush head 14, and the conductive clip 1310. The control unit 11 controls the rotation motor 1028 to rotate, thereby driving the rotating disk 1025 to rotate. When the rotating disk 1025 rotates, it drives the slider 1024 to move along the arc-shaped chute 1023 through the limit clamping plate 1026, and finally adjusts the stirring blade 1020. As the rotation speed of the stirring shaft 101 further increases, one of the button pressing blocks 136 further overcomes the adsorption of the adsorption magnet 133 with a larger adsorption force, thereby releasing a corresponding control button 135, and the stirring blade 1020 is adjusted again. After the rotation speed of the stirring shaft 101 reaches the highest, the last button pressing block 136 overcomes the suction force of the adsorption magnet 133 with the largest adsorption force, thereby releasing the last control button 135, and the stirring blade 1020 is adjusted to the final state. After the stirring stops, as the rotation speed of the stirring shaft 101 decreases, the centrifugal force received by each button pressing block 136 gradually decreases, and thus it falls back to the bottom of the rod group 132 and is re-adsorbed by the adsorption magnet 133, and each control button 135 is re-pressed, so that the stirring blade 1020 returns to the initial state. Compared with the prior art, the present invention can effectively adjust the state of the stirring blade 1020 according to the rotation speeds of the stirring motor 100 and the stirring shaft 101, and the use of the rod group 132, the button pressing block 136, and the control button 135 for control can effectively improve the reliability and adaptability of the stirring blade control member 13. It is less affected by external factors, and the maintenance is simple. It does not require high-precision sensors and complex electronic components, effectively reducing the construction cost.

[0104] This embodiment provides a curtain grouting construction system for a concrete dam. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The conductive brush head 14 further includes: a brush head seat 140, a connection cavity 141 is arranged in the brush head seat 140, and a hole communicating with the connection cavity 141 is arranged at the end of the brush head seat 140; a brush head main body 142, the brush head main body 142 is inserted through the hole, and a connection convex ring 143 is arranged at the bottom end of the brush head main body 142; a conductive spring 145, there are several conductive springs 145 and they are evenly distributed in the connection cavity 141, one end of the conductive spring 145 is connected to the brush head main body 142, and the other end is connected to the bottom surface of the connection cavity 141; a first conductive block 146, the first conductive block 146 is arranged on the outer wall of the connection convex ring 143; a first conductive sliding groove 147, the first conductive sliding groove 147 is arranged on the inner arm of the connection cavity 141, and a V-shaped conductive spring piece 148 is arranged in the first conductive sliding groove 147; a conical cavity 149, the conical cavity 149 is arranged in the brush head main body 142 and forms a cavity opening at the bottom of the brush head main body 142, and two second conductive sliding grooves 1410 are symmetrically distributed along the radial direction of the brush head main body 142 on the inner wall of the conical cavity 149; a second conductive block 1411, the second conductive block 1411 is slidably arranged in the second conductive sliding groove 1410; a pre-tightening spring piece 1412, the pre-tightening spring piece 1412 is arranged between the two second conductive blocks 1411; an elastic conductive column 1413, the elastic conductive column 1413 is arranged in the connection cavity 141;

[0105] Among them, the outer wall of the connection convex ring 143 is in electrical contact with the inner wall of the connection cavity 141, the first conductive block 146 can move in the first conductive sliding groove 147 and the first conductive block 146 is clamped in the V-shaped conductive spring piece 148, one end of the elastic conductive column 1413 is connected to the second conductive block 1411, and the other end is connected to the bottom of the connection cavity 141.

[0106] In this embodiment, after the conductive brush head 14 contacts the conductive disk 139, the brush head main body 142 is pressed into the connection cavity 141 of the brush head seat 140. The elastic force of the conductive spring 145 can keep the brush head main body 142 in stable electrical connection with the conductive disk 139 all the time. At the same time, the conductive spring 145 and the brush head main body 142 cooperate to form an electrical path. A second electrical path can be formed between the connection convex ring 143 on the brush head main body 142 and the brush head seat 140. When the brush head main body 142 is pressed, the first conductive block 146 moves with the brush head main body 142 and enters the first conductive chute 147. At the same time, the first conductive block 146 is clamped in the middle by the V-shaped conductive spring piece 148. The V-shaped conductive spring piece 148 can always be in stable contact with the first conductive chute 147 to form a third electrical path. The second conductive block 1411 can move along the second conductive chute 1410 and is connected to the brush head seat 140 through the elastic conductive column 1413 to form a fourth electrical path. At the same time, the pre-tightening spring piece 1412 and the elastic conductive column 1413 can further keep the brush head main body 142 in stable electrical connection with the conductive disk 139 through the elastic force. Compared with the prior art, the present invention effectively improves the electrical connection stability of the stirring blade control member 13, effectively prevents the phenomenon of power failure by forming multiple electrical paths, and improves the electrical contact stability between the conductive brush head 14 and the conductive disk 139, preventing the phenomenon of power failure due to wear.

[0107] This embodiment provides a construction method of a concrete dam curtain grouting construction system. In addition to including the technical solutions of the above embodiments, it includes the following steps:

[0108] S1 Arrange a grouting system on the construction hole and prepare the slurry;

[0109] S2 Carry out drilling and grouting in sequence;

[0110] S3 During the drilling and grouting process, control the operation of the slurry storage mixer to keep the slurry uniformity.

[0111] Step S3 further includes:

[0112] S30 In the first stirring stage, the control unit 11 controls the stirring motor 100 to start. At this time, the stirring blade 1020 is in the initial state, and the included angle between the stirring blade 1020 and the horizontal plane is 10-30°. When the stirring motor 100 drives the stirring shaft 101 to rotate, the rotating shaft 131 rotates together under the action of the bevel gear set 1311, and the slurry is stirred under the action of the stirring blade 1020;

[0113] S31 Second stirring stage: As the rotation speed of the stirring shaft 101 increases, the one with the smallest adsorption force in the button pressing block 136 is thrown to the outer end of the rod group 132 under the action of centrifugal force, overcoming the suction force of the adsorption magnet 133. At this time, the corresponding control button 135 is released, and the electrical signal is transmitted to the control unit 11 through the second housing 137, the conductive brush head 14, and the conductive clip 1310. The control unit 11 controls the rotation of the rotation motor 1028 to drive the rotation of the rotating disk 1025. When the rotating disk 1025 rotates, it drives the slider 1024 to move along the arc-shaped chute 1023 through the limit clamping plate 1026, and finally adjusts the stirring blade 1020. After the adjustment, the stirring blade 1020 is in the second state, and the angle between the stirring blade 1020 and the horizontal plane is 30 - 50°;

[0114] S32 Third stirring stage: As the rotation speed of the stirring shaft 101 further increases, one of the button pressing blocks 136 further overcomes the adsorption of the adsorption magnet 133 with a larger adsorption force, thus releasing a corresponding control button 135. The stirring blade 1020 is adjusted again and enters the third state, and the angle between the stirring blade 1020 and the horizontal plane is 50 - 70°;

[0115] S33 Final stirring stage: After the rotation speed of the stirring shaft 101 reaches the maximum, the last button pressing block 136 overcomes the suction force of the adsorption magnet 133 with the largest adsorption force, thus releasing the last control button 135. The stirring blade 1020 is adjusted to the final state, and the angle between the stirring blade 1020 and the horizontal plane is 70 - 90°.

[0116] In this embodiment, during the grouting operation, the slurry storage mixer can effectively maintain the uniformity of the slurry, improve the working stability of the curtain grouting construction system. At the same time, during the slurry stirring process, by gradually increasing the motor rotation speed and coordinating with the angle adjustment of the stirring blade 1020, it can effectively reduce the load of the stirring motor 100 while ensuring the slurry stirring effect, reduce energy consumption, and prevent the motor from overheating and damage, further improving the working stability of the curtain grouting construction system.

[0117] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A concrete dam curtain grouting construction system, characterized in that: include: A base (1), wherein a drilling machine (2) is arranged on the base (1), and a power head (200) is arranged on the drilling machine (2); A hanger (3), the hanger (3) being arranged on the ground, and a hanger wheel (300) being arranged at the top end of the hanger (3); A hoisting device (4), wherein the hoisting device (4) is arranged on the drilling rig (2); A drill rod (5), the drill rod (5) being inserted into the power head (200), and a slurry inlet (500) being provided at the top end of the drill rod (5); A slurry inlet pipe (6), wherein the slurry inlet pipe (6) is connected to the slurry inlet portion (500); A control unit (7), the control unit (7) being arranged on the drilling rig (2), the control unit (7) comprising a plurality of operating levers and a distribution box on which control elements are installed; A protective sleeve rod (8), wherein the protective sleeve rod (8) is arranged at the bottom of the power head (200); A slurry storage mixer, comprising a storage bucket (9) having a heating unit and a material blocking plate, and a mixing mechanism (10) arranged on the storage bucket (9); A control unit (11), wherein the control unit (11) is arranged on a side wall of the storage barrel (9); The protective sleeve rod (8) is sleeved on the outside of the drill rod (5), the grouting pipe (6) is connected to the storage barrel (9) via a grouting pump, and the heating unit is an electric heating wire arranged in the barrel wall of the storage barrel (9); The stirring mechanism (10) further comprises: A stirring motor (100), wherein the stirring motor (100) is arranged on the top of the storage bucket (9) via a motor bracket; A stirring shaft (101), wherein the stirring shaft (101) is rotatably disposed in the storage barrel (9); A stirring portion (102), the stirring portion (102) being arranged at the bottom end of the stirring shaft (101), the stirring portion (102) comprising a plurality of stirring blades (1020) with variable angles; A stirring blade control member (13), wherein the stirring blade control member (13) is arranged on the top of the storage bucket (9); The stirring portion (102) and the stirring blade control component (13) are both electrically connected to the control unit (11), and the stirring blade control component (13) can control the angle of the stirring blade (1020) to change according to the increase in the rotation speed of the stirring shaft (101); The stirring part (102) further includes: A central shaft (1021), the central shaft (1021) being arranged at the bottom end of the stirring shaft (101), and a rotating chamber (1022) being arranged inside the central shaft (1021); An arc-shaped slide groove (1023), wherein the arc-shaped slide groove (1023) is arranged on the side wall of the central axis (1021) and penetrates the rotating cavity (1022), and there are a plurality of the arc-shaped slide grooves (1023), and the plurality of arc-shaped slide grooves (1023) are evenly spaced and distributed along the circumference of the central axis (1021); A sliding block (1024), wherein the sliding block (1024) is slidably disposed on the arc-shaped sliding groove (1023); A rotating disk (1025), the rotating disk (1025) being rotatably disposed in the rotating cavity (1022), a plurality of position limiting clamping plates (1026) being disposed on the surface of the rotating disk (1025), and the plurality of position limiting clamping plates (1026) being evenly spaced and distributed along the circumference of the rotating disk (1025); A mounting shell (1027), the mounting shell (1027) being arranged at the bottom of the central shaft (1021), and a rotating motor (1028) being arranged in the mounting shell (1027); The root of the stirring blade (1020) is connected to the outer end of the slider (1024), the inner end of the slider (1024) cooperates with the limit clamp (1026) and moves along the arc-shaped slide groove (1023) driven by the rotating disk (1025), and the driving end of the rotating motor (1028) is connected to the rotating disk (1025); The stirring blade control member (13) further comprises: A first shell (130), the first shell (130) being arranged on the top of the storage bucket (9), and a rotating shaft (131) being rotatably arranged inside the first shell (130); A plurality of rod groups (132), the rod groups (132) being composed of two rods, the plurality of rod groups (132) being symmetrically distributed radially along the rotating shaft (131) and evenly spaced along the axial direction of the rotating shaft (131), an adsorption magnet (133) being provided at the bottom of the rod group (132), and a limiting cover (134) being provided at the top of the rod group (132); Control buttons (135), there are a plurality of control buttons (135), and the control buttons (135) are arranged on the surface of the rotating shaft (131) and located at the bottom of the rod group (132); A button pressing block (136), wherein the button pressing blocks (136) are in plurality and are movably arranged on the rod group (132); A second shell (137), the second shell (137) being arranged on the top of the storage bucket (9), a conductive rod (138) being rotatably arranged in the second shell (137), the conductive rod (138) being coaxially connected to the rotating rod, and a conductive disk (139) being arranged at one end of the conductive rod (138) away from the rotating rod; A conductive clip (1310), the conductive clip (1310) being arranged in the second housing (137), and a conductive brush head (14) being arranged at an end of the conductive clip (1310); The rotating shaft (131) is connected to the stirring shaft (101) through a bevel gear set (1311), the suction force of the adsorption magnets (133) at the bottom of the plurality of rod sets (132) increases sequentially, the button pressing block (136) can be adsorbed by the adsorption magnets (133), the edge of the conductive disk (139) is located in the conductive clamp (1310), the end of the conductive brush head (14) is in electrical contact with the conductive disk (139), and the conductive clamp (1310) is electrically connected to the control unit (11); The conductive brush head (14) further comprises: A brush head seat (140), wherein a connecting cavity (141) is provided in the brush head seat (140), and an end portion of the brush head seat (140) is provided with a hole communicating with the connecting cavity (141); A brush head body (142), the brush head body (142) being inserted into the hole, and a connecting convex ring (143) being provided at the bottom end of the brush head body (142); A conductive spring (145), wherein the conductive spring (145) has a plurality of springs and is evenly distributed in the connection cavity (141), one end of the conductive spring (145) is connected to the brush head body (142), and the other end is connected to the bottom surface of the connection cavity (141); A first conductive block (146), the first conductive block (146) being arranged on the outer wall of the connecting protruding ring (143); A first conductive slide groove (147), wherein the first conductive slide groove (147) is arranged on an inner arm of the connecting cavity (141), and a V-shaped conductive spring leaf (148) is arranged in the first conductive slide groove (147); A conical cavity (149), the conical cavity (149) being arranged in the brush head body (142) and forming a cavity opening at the bottom of the brush head body (142), and two second conductive sliding grooves (1410) being symmetrically distributed on the inner wall of the conical cavity (149) along the radial direction of the brush head body (142); A second conductive block (1411), the second conductive block (1411) being slidably disposed in the second conductive sliding groove (1410); A pre-tensioning spring (1412), wherein the pre-tensioning spring (1412) is arranged between two second conductive blocks (1411); An elastic conductive column (1413), wherein the elastic conductive column (1413) is arranged in the connecting cavity (141); The outer wall of the connecting protruding ring (143) is in electrical contact with the inner wall of the connecting cavity (141), the first conductive block (146) can move in the first conductive sliding groove (147) and the first conductive block (146) is clamped in the V-shaped conductive spring sheet (148), and one end of the elastic conductive column (1413) is connected to the second conductive block (1411), and the other end is connected to the bottom of the connecting cavity (141).

2. A concrete dam curtain grouting construction system according to claim 1, characterized in that: Also includes: A plurality of material blocking plates (12), the plurality of material blocking plates (12) being arranged on the inner wall of the storage barrel (9), and the plurality of material blocking plates (12) being evenly spaced and distributed along the circumference of the storage barrel (9); The material blocking plate (12) is bent and extends from the top to the bottom of the storage barrel (9).

3. A concrete dam curtain grouting construction system according to claim 2, characterized in that: The material blocking plate is in the shape of a mesh plate.

4. A construction method applicable to the concrete dam curtain grouting construction system according to claim 3, characterized in that: The following steps are involved: S1 Arrange the grouting system on the construction hole and prepare the grout; S2 drills and fills in sequence; S3 During the drilling and grouting process, control the operation of the slurry storage mixer to maintain the uniformity of the slurry.

5. The construction method of a concrete dam curtain grouting construction system according to claim 4, characterized in that: The step S3 further comprises: S30 In the first stirring stage, the control unit (11) controls the stirring motor (100) to start, at which time the stirring blade (1020) is in an initial state, and the angle between the stirring blade (1020) and the horizontal plane is 10-30 degrees. When the stirring motor (100) drives the stirring shaft (101) to rotate, the rotating shaft (131) rotates together with the bevel gear set (1311), and the slurry is stirred under the action of the stirring blade (1020); S31 In the second stirring stage, as the rotation speed of the stirring shaft (101) increases, the one of the button pressing blocks (136) with the smallest adsorption force overcomes the suction force of the adsorption magnet (133) under the action of centrifugal force and is thrown to the outer end of the rod group (132). At this time, the corresponding control button (135) is released, and the electrical signal is transmitted to the control unit (11) through the second shell (137), the conductive brush head (14) and the conductive clamp (1310). The control unit (11) controls the rotation motor (1028) to rotate, thereby driving the rotating disk (1025) to rotate. When the rotating disk (1025) rotates, it drives the slider (1024) to move along the arc-shaped slide groove (1023) through the limit clamp (1026), and finally adjusts the stirring blade (1020). After the stirring blade (1020) is adjusted, it is in the second state, and the angle between the stirring blade (1020) and the horizontal plane is 30-50°; S32: In the third stirring stage, as the rotation speed of the stirring shaft (101) further increases, one of the button pressing blocks (136) further overcomes the adsorption of the adsorption magnet (133) with greater adsorption force, thereby releasing a corresponding control button (135), and the stirring blade (1020) is adjusted again and enters the third state, and the angle between the stirring blade (1020) and the horizontal plane is 50-70°; S33 In the final stirring stage, after the stirring shaft (101) reaches the highest speed, the last button pressing block (136) overcomes the suction force of the adsorption magnet (133) with the greatest adsorption force, thereby releasing the last control button (135), and the stirring blade (1020) is adjusted to the final state, and the angle between the stirring blade (1020) and the horizontal plane is 70-90°.

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