Intelligent movable grouting device for composite grout rockfill damming and construction method

Abstract

The invention relates to the technical field of rock-fill damming grouting, in particular to an intelligent movable grouting device for composite slurry rock-fill damming and a construction method.The intelligent movable grouting device comprises a movable trolley, a driving mechanism, a controller and a slurry storage cylinder are arranged on the movable trolley, and a slurry conveying main pipe is connected to the slurry storage cylinder; the grout storage cylinder is used for spraying grout to the rockfill material through the grout conveying main pipe, the driving mechanism is used for driving the moving trolley to move, the controller is connected with the driving mechanism, and the controller adjusts driving parameters of the driving mechanism according to the grouting amount needed by a rolling area and the grouting speed of the grout conveying main pipe. And the grouting amount is not smaller than the grouting amount required by the rolling area after the mobile vehicle travels once in the rolling area. The intelligent movable grouting device is convenient to move, can be flexibly arranged, and is suitable for grouting requirements of different areas and construction conditions of narrow space in the filling process of a high rock-fill dam or a soft rock-fill dam.

Description

Technical Field

[0001] The invention relates to the technical field of grouting for rockfill dam construction, and in particular to an intelligent mobile grouting device and a construction method for composite slurry rockfill dam construction. Background Art

[0002] At present, some areas need to build high dams and large reservoirs to rationally utilize water resources, among which there are some extra-high dams with a height of 200m to 300m. These high dams and large reservoirs are often located in mountainous and canyon areas with poor transportation conditions and complex terrain and geological conditions. In the selection of dam types, rockfill dams with the advantages of local materials, convenient and fast construction, and good adaptability have become the preferred dam type. At the same time, in order to make full use of excavated materials to protect the environment, more and more rockfill dams are generally filled with soft rocks, and even the entire section of the dam body is filled with soft rocks. However, the excessive rheological deformation and the difficulty of deformation control limit the application of extra-high rockfill dams and soft rock rockfill dams. For this reason, composite slurry rockfill dams can be used, that is, composite slurry is added to the rockfill body, and the slurry's easy flow and late hardening characteristics are used to fill part of the pores of the rockfill body, in order to reduce the porosity of the rockfill body, increase the density of the rockfill body, and improve the contact characteristics between the rockfill particles, so as to achieve the purpose of increasing the deformation modulus of the rockfill dam body and reducing the deformation of the dam body.

[0003] The current grouting method for composite slurry rockfill dam is to first sprinkle water on the rockfill after unloading the rockfill on the dam filling surface, spray the composite slurry through the grouting equipment, and then use a bulldozer to spread it in a rolling layer of about 80cm thick, and then roll it according to the requirements of the rockfill body rolling construction after paving. At present, there is no special grouting equipment, and the grouting is mainly spread by simple devices such as forklift buckets and modified sprinkler trucks. In practice, it is found that according to this grouting method, the grouting efficiency is low and affects the rolling construction of the rockfill, and the slurry is unevenly and insufficiently combined with the rockfill. There is a concrete slab layer on the surface of the rockfill, which makes it difficult for the slurry to penetrate into the bottom layer, the void filling rate of the rockfill is not high, and the dry density of the composite slurry rockfill is very limited.

[0004] Therefore, there is an urgent need to develop an intelligent mobile grouting device for composite slurry rockfill dam construction, which can not only meet the composite slurry grouting requirements, improve the composite slurry utilization effect and grouting efficiency, but also meet the automation and less-manpowered construction requirements in narrow construction working spaces. Summary of the invention

[0005] The purpose of the present invention is to address the defects of the prior art and provide an intelligent mobile grouting device and construction method for composite slurry rockfill dam construction, which is easy to move and can be flexibly arranged to meet the grouting needs of different areas and narrow construction conditions during the construction of high rockfill dams or soft rock rockfill dams.

[0006] In order to solve the above technical problems, the present invention provides an intelligent mobile grouting device for composite slurry rockfill dam construction, comprising a mobile vehicle, a driving mechanism, a controller and a slurry storage cylinder arranged on the mobile vehicle, the slurry storage cylinder being connected to a slurry delivery pipe, the slurry storage cylinder being used to spray the slurry onto the rockfill material through the slurry delivery pipe, the driving mechanism being used to drive the mobile vehicle to move, the controller being connected to the driving mechanism, the controller adjusting the driving parameters of the driving mechanism according to the grouting amount required for the rolling area and the grouting speed of the slurry delivery pipe, so that the grouting amount after the mobile vehicle travels once in the rolling area is not less than the grouting amount required for the rolling area.

[0007] Furthermore, a steering mechanism is provided on the mobile vehicle, and the steering mechanism is used for automatic steering of the mobile vehicle. The controller is connected to the steering mechanism, and the controller includes a Beidou or GPS signal receiver for positioning. The controller is used to control the movement of the mobile vehicle within the designated rolling area according to the positioning signal, so that the slurry is evenly sprayed over the entire range of the designated rolling area.

[0008] Furthermore, a slurry suction pipe is provided on the slurry storage barrel, and the slurry suction pipe is used to replenish slurry into the slurry storage barrel.

[0009] Furthermore, the slurry conveying main pipe is arranged along the length direction of the mobile vehicle.

[0010] Furthermore, the slurry delivery main pipe is composed of a single steel pipe or a plurality of steel pipes assembled together.

[0011] Furthermore, the slurry conveying main pipe is evenly provided with a plurality of branch pipes along the length direction, and a plurality of slurry leakage holes are provided on the branch pipes.

[0012] Furthermore, the plurality of branch pipes form a plurality of groups of branch pipes, and the plurality of groups of branch pipes are evenly arranged along the length direction of the slurry conveying main pipe, and each group of branch pipes includes a plurality of branch pipes connected to form a polygon.

[0013] Furthermore, the mobile vehicle is provided with a handrail for pushing the mobile vehicle and a warning light for driving safety warning.

[0014] In a second aspect, the present invention provides a construction method, comprising:

[0015] According to the construction process, the rolling areas A, B, ... are divided. After the rolling of the rolling area A is completed, the rolling of the rolling area B is carried out and the grouting of the rolling area A is started at the same time;

[0016] The controller obtains the original rock properties, particle size distribution, compaction parameters and boundary coordinates of compaction area A of the rockfill material, and calculates the grouting amount required for compaction area A;

[0017] The controller calculates the speed of the mobile vehicle according to the required grouting amount and grouting speed of the rolling area A;

[0018] Open the slurry suction pipe and fill the slurry storage cylinder with composite slurry;

[0019] The controller sends a signal to the driving mechanism and the steering mechanism according to the calculated vehicle speed, so that the driving mechanism and the steering mechanism control the moving vehicle to move along a preset route to perform grouting in the rolling area A;

[0020] Every time the construction machinery spreads a layer of rockfill, the slurry main pipe sprays the slurry evenly on the rockfill through the connected branch pipes, thereby achieving uniform grouting of the layer of rockfill, and finally completing uniform grouting of each layer of rockfill in each rolling area.

[0021] Furthermore, the required grouting amount in the compaction area has the following relationship with the original rock properties, particle gradation, compaction parameters, and compaction area of ​​the dam rockfill material: W=f(R, P, T, S); wherein W represents the required grouting amount in the compaction area of ​​the rockfill material, R represents the original rock property parameters of the dam rockfill material, P represents the particle gradation curve equation, T represents the compaction parameter, S represents the compaction area, and the compaction area is calculated based on the boundary coordinates of the compaction area. f represents the function between W and R, P, T, and S, and the function f is obtained by the on-site grouting test and the density test of the rockfill material after compaction.

[0022] The beneficial effects of the present invention are:

[0023] 1. The invention is easy to move and can be flexibly arranged to meet the needs of grouting in different areas and narrow space during the construction of high rockfill dams or soft rock rockfill dams.

[0024] 2. The intelligent mobile grouting device of the present invention can evenly spread the composite slurry on the rockfill material, thereby increasing the contact area between the composite slurry and the rockfill material, and facilitating the composite slurry to penetrate into the rockfill material.

[0025] 3. The construction method of the present invention can stagger the grouting areas according to the different construction sequences of the rockfill material rolling areas, so that the grouting does not affect the rockfill material rolling construction, which is beneficial to improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 is a side view of the present invention;

[0028] Figure 3 It is a schematic diagram of the construction process of the present invention.

[0029] Figure numerals: mobile vehicle 1; warning light 2; slurry storage cylinder 3; slurry suction pipe 4; slurry delivery pipe 5; slurry delivery main pipe 6; branch pipe 7; controller 8. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides an intelligent mobile grouting device for composite slurry rockfill dam construction, including a mobile vehicle 1, the mobile vehicle 1 includes two brackets and a slurry delivery main pipe 6, the two ends of the slurry delivery main pipe 6 are respectively welded to the tops of the two brackets, a plurality of slurry delivery main pipes 6 can be arranged in parallel, and one is arranged in this embodiment, the slurry delivery main pipe 6 is composed of a single steel pipe or a plurality of steel pipes, each section of the pipe body is 2m long (the length can be determined according to actual needs), and the total length of the slurry delivery main pipe 6 is flexibly determined according to the grouting needs, which is suitable for the grouting needs of different areas and construction conditions with narrow space. The slurry delivery main pipe 6 is evenly arranged with multiple branch pipes 7 along the length direction, and multiple slurry leakage holes are arranged on the branch pipe 7. The multiple branch pipes 7 form multiple groups of branch pipes 7, and each group of branch pipes 7 includes multiple branch pipes 7 connected into a polygon, which is conducive to improving the grouting range and grouting uniformity during the movement of the mobile vehicle 1.

[0033] The bottom of the support is rotatably provided with wheels, and the support is provided with a driving mechanism and a steering mechanism, wherein the driving mechanism is used to control the rotation of the wheels, and the steering mechanism is used to control the steering of the wheels. In this embodiment, the driving mechanism adopts a motor.

[0034] The mobile vehicle 1 further includes a controller 8 and a slurry storage cylinder 3. The slurry storage cylinder 3 is fixed above a plurality of slurry delivery pipes 6 through a steel pipe. A slurry suction pipe 4 and a slurry delivery pipe 5 are connected to the slurry storage cylinder 3. The slurry storage cylinder 3 is connected to the slurry delivery pipe 6 through the slurry delivery pipe 5, and is used to spray the slurry onto the rockfill through the slurry delivery pipe 6. The slurry storage cylinder 3 can be replenished with slurry through the slurry suction pipe 4. A Beidou or GPS signal receiver for positioning is integrated in the controller 8.

[0035] A slurry suction pipe 4 is also provided on the slurry storage cylinder 3, and the slurry storage cylinder 3 can be replenished with slurry in time through a slurry conveying vehicle.

[0036] The controller 8 is connected to the driving mechanism and the steering mechanism respectively. The controller 8 controls the speed of the mobile vehicle 1 according to the driving mechanism, controls the turning time of the mobile vehicle 1 according to the steering mechanism, obtains the position coordinates of the mobile vehicle 1 in real time according to the Beidou or GPS signal receiver, and controls the mobile vehicle 1 to move within the specified rolling area. The turning time of the mobile vehicle 1 can be determined according to the rolling area range and the current position of the mobile vehicle 1, or according to the speed of the mobile vehicle 1 and the size of the rolling area, that is, to ensure that the mobile vehicle 1 turns when it moves to the boundary of the rolling area.

[0037] In order to avoid the lack of Beidou or GPS signals in canyon mountainous areas, handrails are provided on the mobile vehicle 1 so that it can be pushed manually.

[0038] In addition, a warning light 2 is also provided on the mobile vehicle 1 to warn the construction workers.

[0039] Example 2

[0040] This embodiment provides a construction method based on the intelligent mobile grouting device in Embodiment 1, including:

[0041] like Figure 3 As shown, according to the construction process, rolling areas A, B, ... are divided. After the rolling of rolling area A is completed, the rolling of rolling area B is carried out and the grouting of rolling area A is started at the same time;

[0042] The controller 8 obtains the original rock properties, particle size distribution, compaction parameters and boundary coordinates of the compaction area A of the rockfill material, and calculates the grouting amount required for the compaction area A;

[0043] Among them, there is the following relationship between the amount of grouting required in the compaction area and the original rock properties, particle grading, compaction parameters, and compaction area of ​​the dam rockfill material: W = f(R, P, T, S); where W represents the amount of grouting required in the compaction area of ​​the rockfill material, R represents the original rock property parameters of the dam rockfill material, P represents the particle grading curve equation, T represents the compaction parameter, S represents the compaction area, and the compaction area is calculated based on the boundary coordinates of the compaction area. f represents the function between W and R, P, T, and S. Function f is obtained by on-site grouting tests and density tests of the rockfill material after compaction.

[0044] The controller 8 calculates the speed of the mobile vehicle 1 according to the required grouting amount and grouting speed of the rolling area A, so that at this speed, the amount of slurry sprayed by the mobile vehicle 1 after traveling once within the rolling area A is not less than the required grouting amount of the rolling area A.

[0045] Open the slurry suction pipe 4 and fill the slurry storage cylinder 3 with the composite slurry;

[0046] The controller 8 sends a signal to the driving mechanism and the steering mechanism according to the calculated vehicle speed, so that the driving mechanism and the steering mechanism control the mobile vehicle 1 to move along the preset route to perform grouting in the rolling area A, and no manual intervention is required during the driving process; for example, the rolling area A is a rectangular area with a length of a and a width of b, and the mobile vehicle 1 travels in a straight line along the width direction of the rolling area A. The time required for the mobile vehicle 1 to travel to the boundary of the rolling area A can be calculated based on the width b and the vehicle speed. The start time and start duration of the steering mechanism can be calculated based on this time, so as to complete the U-turn of the mobile vehicle 1 at the boundary of the rolling area A. It should be noted that during the movement of the mobile vehicle 1, the slurry can be replenished in real time by following a slurry transport vehicle behind it to ensure that the slurry in the slurry storage cylinder 3 is sufficient and the spraying speed is uniform.

[0047] Each time the construction machinery spreads a layer of rockfill, the slurry main pipe 6 sprays the slurry evenly on the rockfill through the connected branch pipes 7, thereby achieving uniform grouting of the layer of rockfill, and finally completing uniform grouting of each layer of rockfill in each rolling area.

[0048] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An intelligent mobile grouting device for composite slurry rockfill dam construction, characterized in that: The invention comprises a mobile vehicle (1), wherein a driving mechanism, a controller (8) and a slurry storage cylinder (3) are arranged on the mobile vehicle (1), the slurry storage cylinder (3) is connected to a slurry delivery pipe (6), the slurry storage cylinder (3) is used to spray slurry onto the rockfill through the slurry delivery pipe (6), the driving mechanism is used to drive the mobile vehicle (1) to move, the controller (8) is connected to the driving mechanism, and the controller (8) adjusts the driving parameters of the driving mechanism according to the grouting amount required in the rolling area and the grouting speed of the slurry delivery pipe (6), so that the grouting amount after the mobile vehicle (1) travels once in the rolling area is not less than the grouting amount required in the rolling area.

2. The intelligent mobile grouting device for composite slurry rockfill dam construction according to claim 1 is characterized by: The mobile vehicle (1) is provided with a steering mechanism, the steering mechanism is used for automatic steering of the mobile vehicle (1), the controller (8) is connected to the steering mechanism, the controller (8) comprises a Beidou or GPS signal receiver for positioning, and the controller (8) is used to control the mobile vehicle (1) to move within the specified rolling area according to the positioning signal, so that the slurry is evenly sprayed over the entire range of the specified rolling area.

3. The intelligent mobile grouting device for composite slurry rockfill dam construction according to claim 1 or 2, characterized in that: A slurry suction pipe (4) is arranged on the slurry storage barrel (3), and the slurry suction pipe (4) is used to replenish slurry into the slurry storage barrel (3).

4. The intelligent mobile grouting device for composite slurry rockfill dam construction according to claim 1 or 2, characterized in that: The slurry conveying main pipe (6) is arranged along the length direction of the mobile vehicle (1).

5. The intelligent mobile grouting device for composite slurry rockfill dam construction according to claim 4 is characterized in that: The slurry delivery main pipe (6) is composed of a single steel pipe or a plurality of steel pipes assembled together.

6. The intelligent mobile grouting device for composite slurry rockfill dam construction according to claim 5 is characterized by: The slurry conveying main pipe (6) is evenly provided with a plurality of branch pipes (7) along the length direction, and a plurality of slurry leakage holes are provided on the branch pipes (7).

7. The intelligent mobile grouting device for composite slurry rockfill dam construction according to claim 6 is characterized by: The plurality of branch pipes (7) form a plurality of groups of branch pipes (7), and the plurality of groups of branch pipes (7) are evenly arranged along the length direction of the slurry conveying main pipe (6), and each group of branch pipes (7) comprises a plurality of branch pipes (7) connected to form a polygon.

8. The intelligent mobile grouting device for composite slurry rockfill dam construction according to claim 1 or 2, characterized in that: The mobile vehicle (1) is provided with a handrail for pushing the mobile vehicle (1) and a warning light (2) for driving safety warning.

9. A construction method of an intelligent mobile grouting device for composite slurry rockfill dam construction according to any one of claims 1 to 8, characterized in that: include: According to the construction process, the rolling areas A, B, ... are divided. After the rolling of the rolling area A is completed, the rolling of the rolling area B is carried out and the grouting of the rolling area A is started at the same time; The controller (8) obtains the original rock properties, particle size distribution, compaction parameters and boundary coordinates of the compaction area A of the rockfill material, and calculates the grouting amount required for the compaction area A; The controller (8) calculates the speed of the moving vehicle (1) according to the grouting amount and grouting speed required for the rolling area A; Open the slurry suction pipe (4) and fill the slurry storage cylinder (3) with the composite slurry; The controller (8) sends a signal to the driving mechanism and the steering mechanism according to the calculated vehicle speed, so that the driving mechanism and the steering mechanism control the moving vehicle (1) to move along a preset route to perform grouting in the rolling area A; Each time the construction machinery spreads a layer of rockfill material, the slurry delivery main pipe (6) sprays the slurry evenly on the rockfill material through the connected branch pipes (7), thereby achieving even grouting of the layer of rockfill material, and finally completing even grouting of each layer of rockfill material in each rolling area.

10. The construction method according to claim 9, characterized in that: There is the following relationship between the amount of grouting required in the compaction area and the original rock properties, particle gradation, compaction parameters, and compaction area of ​​the dam rockfill material: W = f(R, P, T, S); where W represents the amount of grouting required in the compaction area of ​​the rockfill material, R represents the original rock property parameters of the dam rockfill material, P represents the particle gradation curve equation, T represents the compaction parameters, S represents the compaction area, and the compaction area is calculated based on the boundary coordinates of the compaction area. f represents the function between W and R, P, T, and S. Function f is obtained by on-site grouting tests and density tests of the rockfill material after compaction.

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