CN212026149U - Unmanned rolling system for roller compacted concrete dam - Google Patents

Abstract

The utility model relates to a roller compacted concrete dam unmanned roller compacted system belongs to hydraulic engineering automation construction field, and this system includes: the system comprises a first positioning device, a second positioning device, a GPS reference station, an unmanned rolling machine and a server, wherein the first positioning device is a portable GPS positioning device, the first positioning device is independent of the second positioning device, the second positioning device is fixedly arranged on the unmanned rolling machine, the first positioning device is in communication connection with the server through the GPS reference station, the second positioning device is in communication connection with the server through the GPS reference station, and the unmanned rolling machine is in communication connection with the server through the GPS reference station. The utility model discloses can pinpoint and go out the accurate position that will roll regional to the automation of cooperation bucker rolls, has guaranteed that whole rolls the in-process, rolls regional quality even, and has avoided operating personnel to expose and the adverse effect of site environment to operating personnel at the first of throwing of job site.

Description

Unmanned rolling system for roller compacted concrete dam

Technical Field

The utility model belongs to hydraulic engineering automation construction field, concretely relates to roller compacted concrete dam unmanned system that rolls.

Background

In the traditional rolling concrete damming process, a mechanical operator manually operates the rolling machine in a visual inspection or other person guiding mode, the rolling quality of the engineering is often uneven due to different mechanical properties, sex difference of the operator and other reasons, the phenomena of insufficient rolling times, lap joint pressure leakage, overspeed driving, low exciting force and the like generally exist, and the rolling qualification rate of the engineering is influenced; the vibration rolling mode is mostly adopted for the roller compacted concrete damming, for operators, the working environment is often noisy and severe, the operation is boring, and the physical and mental health of the operators can be influenced by the strong vibration, high noise, severe summer and cold environment for a long time.

In recent years, unmanned rolling technology has been developed and applied to roads, earth and rockfill dams and the like, but the application of the unmanned rolling technology to the road and rockfill dams is still in the exploration stage due to the particularity of the rolled concrete dams. Firstly, a large number of embedded parts of monitoring instruments, temporary construction facilities, embedded cooling water pipes and the like are embedded in the roller compacted concrete dam, and a roller compacted path must be considered during roller compaction to avoid obstacles; particularly for the roller compacted concrete arch dam, due to the curve characteristics of the size and the dam axis, no matter the template or the pre-buried cooling water pipe is arranged in a curve, the curve complexity of the roller compacted area planning and the path design is required to be fully considered, the roller compacted concrete is different from the roller compacted by the earth-rock dam, the requirement on the timeliness of the roller compacted concrete is high, and the efficiency, the quality and the path planning of unmanned roller compacted equipment must be considered to ensure that the concrete is rolled in time; compared with an earth-rock dam, the aggregate of the roller compacted concrete dam is larger, so that the roller compacted vibration equipment has higher requirements for ensuring the roller compacted quality; and thirdly, the construction site condition is complex, movable workers and temporary materials are stacked on the working surface, the problems of emergency stop, avoidance and the like must be considered, the safety of the field workers and equipment is ensured, and the difficulty of unmanned rolling is increased undoubtedly.

SUMMERY OF THE UTILITY MODEL

The utility model provides a roller compacted concrete dam unmanned roller compacted system, aim at solves above-mentioned problem, and it is complicated to solve the job site condition, and roller compacted concrete technological requirement is high, and there are staff, the temporary material that removes to stack etc. in the working face, must consider urgent stopping, evade the scheduling problem, guarantees the safety of on-the-spot personnel and equipment to and the possible non-straight line circumstances in working face route, increased the problem of the degree of difficulty that unmanned driving rolled undoubtedly.

In order to achieve the above object, the utility model adopts the following technical scheme:

an unmanned roller compaction system for roller compacted concrete dams, comprising: the system comprises a first positioning device, a second positioning device, a GPS reference station, an unmanned rolling machine and a server, wherein the first positioning device is a portable GPS positioning device, the first positioning device is independent of the second positioning device, the second positioning device is fixedly arranged on the unmanned rolling machine, the first positioning device is in communication connection with the server through the GPS reference station, the second positioning device is in communication connection with the server through the GPS reference station, and the unmanned rolling machine is in communication connection with the server through the GPS reference station.

The first positioning device and the GPS reference station are in wireless communication connection with the server through the wireless communication antenna.

Still have laser radar, electric steering wheel and communication device on the unmanned bucker, controlling means, laser radar sets up the front end of unmanned bucker, electric steering wheel and controlling means establish in the cockpit of unmanned bucker is used for control the walking of unmanned bucker, communication device establishes the top of unmanned bucker, controlling means pass through communication device with server wireless connection.

The unmanned rolling machine further comprises a vibration sensor, and the vibration sensor is electrically connected with the control device.

The unmanned rolling machine further comprises a variable motor assembly, and the variable motor assembly is electrically connected with the control device.

The unmanned rolling machine further comprises an engine, and the engine is electrically connected with the control device.

The beneficial effects of the utility model are that, the utility model discloses can use first positioner accurate positioning to go out the accurate position that will roll the region on rolling concrete dam working face to cooperation second positioner location unmanned bucker self position finally realizes rolling automatically, has guaranteed whole rolling in-process, rolls regional quality evenly, and has avoided operating personnel to expose at the throwing head of job site, avoids site environment to operating personnel's adverse effect.

Drawings

Fig. 1 is a flowchart illustrating an embodiment of the unmanned rolling method for a roller compacted concrete dam of the present invention;

fig. 2 is a block diagram illustrating the structure of an embodiment of the unmanned rolling device for the roller compacted concrete dam of the present invention;

fig. 3 is a schematic view of the overall structure of the unmanned rolling system for the roller compacted concrete dam of the present invention;

FIG. 4 is a schematic view of the overall structure of an unmanned rolling mill for roller compacted concrete dams;

FIG. 5 is a schematic diagram of the path of a straight line mill compaction region in an unmanned mill compaction system for a roller compacted concrete dam;

fig. 6 is a schematic path diagram of a curved crush zone in an unmanned crush system for a crushed concrete dam.

Reference numerals: 1. a laser radar; 2. a vibration sensor; 3. an electric steering wheel; 4. a variable motor assembly; 5. an engine; 6. a laser displacement sensor; 7. a second positioning module; 8. a communication device; 9. and a control device.

Detailed Description

An unmanned rolling scheme provided by the embodiments of the present invention will be described in detail through several specific embodiments.

Example 1

Referring to fig. 1, a flow chart of an embodiment of the present invention of an unmanned rolling method for a roller compacted concrete dam is shown, the unmanned rolling method comprising:

acquiring coordinate information of a target path acquired by a first positioning device;

positioning the coordinate position of the unmanned rolling machine by a second positioning device;

and controlling the unmanned rolling machine to roll the target path along the path coordinate information.

In the embodiment, in the traditional rolling process, a mechanical operator continuously adjusts the path of the rolling machine in a visual inspection or other person guiding mode to finally complete rolling on a target path, and when the method is adopted, on one hand, rolling quality is uneven due to individual difference of the operator, and on the other hand, the on-site environment also has certain influence on the body of the operator, so that the operator is likely to be lack of health; on the other hand, in the rolling process, some obstacles which need to be avoided in many times, so that smooth construction on site is ensured, and when an operator drives the rolling machine, fault tolerance does not exist, and once the driving direction is wrong, accidents are likely to be caused;

in the embodiment, a first positioning device is firstly used on the site to determine the path area needing rolling on the site, and the first positioning device can position the position of the first positioning device, so that the coordinate position of the edge of the path area needing rolling can be obtained as long as the first positioning device surrounds the edge of the path area needing rolling for a circle, and then the accurate position of the path area needing rolling is determined;

after the accurate position of the edge of the path area needing to be rolled is obtained, the unmanned rolling machine adopts a second positioning device to position the coordinate position of the unmanned rolling machine, and rolling the path area to be rolled along the edge coordinates of the path area to be rolled, or the unmanned rolling machine uniformly rolls the path area needing rolling, positions the rolling area and the rolling position through the first positioning device and the second positioning device, and the automatic rolling program is matched to replace the mode that a mechanical operator operates the rolling machine or other people guide to operate the rolling machine, because the accurate position of the area to be rolled can be accurately positioned and the automatic rolling of the rolling machine is matched, the quality of the rolled area is ensured to be uniform in the whole rolling process, and the head throwing and surface exposing of the operators on the construction site are avoided, and the adverse influence of the site environment on the operators is avoided.

In this embodiment, the automatic rolling program, software, and hardware used by the unmanned rolling machine are all known in the art.

Example 2

Further, the utility model relates to an unmanned rolling method's an embodiment uses first positioner, after gathering target path coordinate information, still includes:

determining whether the coordinate information of the target path is a linear path or a closed area;

when the coordinate information of the target path is determined to be a linear path, controlling the unmanned rolling machine to roll the target path along the starting point and the end point of the linear path;

and when the coordinate information of the target path is determined to be a closed area, controlling to roll the range of the closed area.

In the above embodiment, the rolling path located by the first locating device may be a linear path, and then the unmanned rolling machine may roll from the head to the tail along the linear path to roll the target rolling area;

meanwhile, a closed area can be positioned by the first positioning device, the unmanned rolling machine can firstly roll along the edge of the closed area, then roll the non-rolled area in the closed area to complete the rolling task, or alternatively, the closed area can be rolled in a circuitous way from left to right, and finally the whole closed area is rolled.

Example 3

Further, the utility model relates to an unmanned rolling method's an embodiment uses first positioner, after gathering target path coordinate information, still includes:

and transmitting the target path coordinate information acquired by the first positioning device to a server, generating a control instruction for controlling the unmanned rolling machine to move after the server acquires the target path coordinate information, and controlling the unmanned rolling machine by the server according to the control instruction.

In the above embodiment, after the first positioning device collects the coordinate information of the target path, the coordinate information of the target path is sent to the server, the server simulates the walking path of the unmanned rolling machine for rolling the target path, then a control instruction for controlling the unmanned rolling machine to move is generated, the server obtains the coordinates of the unmanned rolling machine in real time, and the unmanned rolling machine is controlled to roll the target path, so that the purpose of intelligent and accurate control is achieved.

Example 4

Further, acquiring the coordinate information of the target path acquired by the first positioning device specifically comprises:

and acquiring target path coordinate information by using a handheld GPS positioning device.

Example 5

Further, the positioning of the coordinate position of the unmanned rolling machine by the second positioning device is specifically as follows:

and positioning the coordinate position of the unmanned rolling machine by a vehicle GPS positioning device.

Example 6

Please refer to fig. 3 and 4, which show the overall structure schematic diagram of the unmanned rolling system for rolling concrete dam of the present invention, the unmanned rolling system comprises: the system comprises a first positioning device, a second positioning device, a GPS reference station, an unmanned rolling machine and a server, wherein the first positioning device is a portable GPS positioning device, the first positioning device is independent of the second positioning device, the second positioning device is fixedly arranged on the unmanned rolling machine, the first positioning device is in communication connection with the server through the GPS reference station, the second positioning device is in communication connection with the server through the GPS reference station, and the unmanned rolling machine is in communication connection with the server through the GPS reference station.

In the above embodiment, the second positioning device is arranged on the unmanned rolling machine and used for positioning the actual coordinate position of the unmanned rolling machine, and the GPS reference station is used for matching with the GPS to realize accurate positioning of the first positioning device and the second positioning device; first positioner is independent of unmanned bucker, and its positioner for conveniently moving, first positioner constantly fix a position after the self coordinate position, through the removal orbit that first positioner marchd of server record, this orbit is formed by the combination of a plurality of coordinate points of first positioner location self position.

This system is when concrete implementation, at first remove first positioner along the regional border that needs to roll, the specific coordinate region that should need to roll regional is gone out in comparatively accurate location through GPS and GPS reference station, later acquire the regional back of specific coordinate that should need to roll, this region is rolled through unmanned bucker to the rethread, in the process of rolling, the accurate location of second positioner goes out the coordinate position of unmanned bucker self, the server constantly acquires the coordinate position of unmanned bucker through the second positioner, and control unmanned bucker goes to the region that needs to roll, after reaching the assigned position, unmanned bucker rolls the region, realize unmanned operation and automatic rolling.

The first positioning device, the second positioning device, the GPS reference station, the unmanned rolling machine and the server are all connected with one another through wireless communication equipment, and the wireless communication equipment is short-distance wireless communication or a telecommunication network in the prior art.

The server specifically runs the methods in examples 1 to 3.

Example 7

Further, please refer to fig. 3 and 4, another embodiment of the present invention relates to an unmanned rolling system for roller compacted concrete dam, further comprising a wireless communication antenna, wherein the first positioning device and the GPS reference station are connected to the server through the wireless communication antenna and the server in a wireless communication manner.

In the embodiment, the wireless communication antenna is arranged on the site and used for amplifying the communication connection signal, so that the site communication is smooth, and the rolling accuracy of the site rolling machine is improved.

Example 8

Further, please refer to fig. 3 and 4, the utility model relates to an another embodiment of unmanned rolling system, still have lidar 1, electric steering wheel 3 and communication device 8 on the unmanned rolling machine, controlling means 9, lidar 1 sets up the front end of unmanned rolling machine, electric steering wheel 3 and controlling means 9 are established in the cockpit of unmanned rolling machine, be used for control the walking of unmanned rolling machine, communication device 8 establishes the top of unmanned rolling machine, controlling means 9 pass through communication device 8 with server wireless communication connects.

In the above embodiment, the laser radar 1 on the unmanned rolling machine is used for detecting whether there is an obstacle in front of the unmanned rolling machine to ensure the safety of the rolling machine during traveling, the electric steering wheel 3 is used for controlling the traveling of the rolling machine, which is the prior art, the control device 9 is used for controlling the throttle, the reversing, the steering and the like of the rolling machine, which is the prior art, and the control device 9 is in communication connection with the server through the communication device 8.

Example 9

Further, please refer to fig. 3 and 4, another embodiment of the present invention relates to an unmanned rolling system, the unmanned rolling machine further comprises a vibration sensor 2, a variable electric motor assembly 4 and an engine 5, and the vibration sensor 2, the variable electric motor assembly 4 and the engine 5 are electrically connected to a control device 9.

In the embodiment, the vibration sensor 2 is responsible for monitoring whether the vibration system of the rolling machine is in good operation, acquiring vibration frequency in real time, taking the rolling quality of a later road surface as reference data, avoiding that the rolling dam surface cannot reach the standard due to the failure of the vibration system of the rolling machine in the real-time monitoring process, the variable motor assembly 4 and the engine 5 provide variable power for the rolling machine, and the control device is used for controlling hardware of an unmanned system in the rolling machine.

Further, the first positioning device is a handheld GPS positioning device.

The second positioning device is a vehicle GPS positioning device.

Example 10

An unmanned roller compaction application for roller compacted concrete dams, comprising: any one of examples 1 to 3 is applied to a roller compacted concrete gravity dam and a roller compacted concrete arch dam.

In the above embodiment, the application of embodiments 1 to 3 to the roller compacted concrete gravity dam and the roller compacted concrete arch dam can accelerate the construction and avoid the injury to the driver.

Example 11

The implementation process of the rolling system comprises the following steps:

1. the rolling machine is in position → the steering angle is adjusted according to the GPS → the walking is carried out according to the planned route → the returning is carried out according to the original route → the next navigation route is entered → the static rolling of the area is finished → the vibration rolling is carried out → the operation is carried out according to the operation parameters → the area rolling operation is finished.

2. The reference station and the receiving antenna are arranged at one position and uniformly supplied with power; the top of each unmanned rolling machine is provided with two GPS mobile stations which are arranged left and right and used for determining the coordinates and the direction of the vehicle in real time.

3. Carrying out data transmission by adopting microwave communication and wire; the microwave network is in a double-link mode, microwave receiving antennas are arranged on the left bank and the right bank, signals received by the receiving antennas are transmitted back to the auxiliary receiving antennas in a wireless mode, and the signals are uniformly transmitted back to the server in a wired mode.

4. CAN bus communication is carried out among all the rolling machines, and wireless microwave local area network communication is carried out between all the rolling machines and the server.

5. The server is a dispatching center of the unmanned rolling system and is divided into a first server and a second server, one server is used for running an unmanned rolling monitoring program, sending rolling areas, rolling speed, vibration and other related instructions to the rolling machine, analyzing working data sent back by the unmanned rolling machine in real time and displaying the working data on a program interface, so that operators on duty can conveniently check the working data; and the other one is used for running video monitoring software and displaying the video monitoring of the monitoring points on the dam and the video monitoring in the cockpit of the rolling machine.

6. Active safety measures and passive safety measures are provided; the active safety measure is realized by an anti-collision radar, the anti-collision radar is arranged in front of and behind the rolling machine, a scanning area is a scattered sector, after an obstacle is monitored, when the distance is 3-5 m, the rolling machine is firstly decelerated, and when the distance is 3 m, the rolling machine is immediately braked; the passive safety measures are achieved through a video monitoring auxiliary system of the server, a remote controller and an emergency braking rolling machine on the rolling machine, and the video monitoring auxiliary system and the remote controller are both in the prior art.

7. The rolling area points are collected in two ways: the 4-point circled square area and the 2-point + rolled area width. Can realize linear and curved rolling paths and is suitable for rolling concrete gravity dams and arch dams.

Example 12

The unmanned rolling system for the concrete dam comprises a GPS base station, an unmanned rolling machine, a communication relay station and a server. The unmanned rolling machine realizes the two-way communication (virtual dynamic two-way communication electric wave) between a machine end and a monitoring end by relying on a base platform such as an on-site positioning system (dynamic GPS satellite signal omnibearing transmission link), a construction data acquisition system (dynamic rolling vibration frequency and intensity data), a numerical control mechanical control system (dynamic laser displacement, obstacle avoidance radar, steering wheel and other data feedback), and the like, integrates the information of a construction site, and realizes real-time management and accurate control on the rolling machine.

The GPS base station adopts an RTK (Real Time Kinematic) carrier phase differential technology to process a differential method of carrier phase observed quantities of two measuring stations in Real Time, the carrier phase collected by a reference station is sent to a user receiver to carry out differencing and coordinate resolving, and centimeter-level positioning accuracy can be obtained in Real Time in the field. The RTK-GPS system reference station consists of a GPS all-in-one machine and a radio station, is arranged at one position with a receiving antenna and is supplied with power uniformly; the top of each unmanned rolling machine is provided with two GPS mobile stations which are arranged left and right and used for determining the coordinates and the direction of the vehicle in real time.

Respectively upgrading and optimizing a laser radar, a vibration sensor, an electric steering wheel, a variable pump motor assembly, an engine motor assembly, a laser displacement sensor, a GPS (global positioning system), a communication device and a control device on a rolling machine to form an integrated intelligent system of the rolling machine, namely, an electromechanical-hydraulic-communication system, so that the rolling machine can sense the operating environment and can be dynamically coordinated with the operating environment; an unmanned operation system of the rolling machine is developed; the system comprises a driving program of control subsystems such as a rolling machine engine and a variable pump and a unmanned safety guarantee system of the rolling machine.

The server consists of two servers, one control calculator and one display computer. And controlling a computer to display rolling state information in real time: information such as running speed, engine speed, vibration frequency, GPS state, front and back radar state, sensor state, oil quantity, water meter, rolling pass, track number and the like; remotely setting construction information such as rolling areas, rolling times, tracks and the like; the running states of the rolling machine such as ignition, flameout, running speed, rotating speed, vibration frequency, steering wheel, emergency vibration stopping, emergency braking and the like are remotely controlled. And displaying the whole progress of the dam, the construction progress of the rolling area, the operation track of the refitted rolling machine, the construction quality of the rolling area and the like by a computer in real time through 3D.

The roller compacted layer creates an interface: and establishing a body of a three-dimensional rolling monitoring inner and rolling layer state and compaction index interface, wherein the body is a current rolling paving area. The design drawing area information, layer thickness, gradient, etc. are needed.

Three-dimensional rolling monitoring interface: and displaying the whole construction state of the dam, the position of a rolling layer and the running state of a rolling machine in a real-time three-dimensional manner.

Rolling layer state interface: and displaying the construction progress of the rolling area in real time, wherein the color represents the rolling pass number and corresponds to the position of the rolling machine in real time.

Compactness index interface: and displaying compaction index information of the rolling area in real time by using the three-dimensional curve.

The compaction mass distribution map is as follows: and the two-dimensional and three-dimensional graphs respectively display rolling quality information by colors of green, yellow, red and the like, wherein the green is in a rolling qualified state, and the yellow and red are in an unqualified state.

The concrete implementation process of the unmanned roller compaction system of the roller compaction concrete dam comprises the following steps:

(1) measuring points: a handheld GPS rover is used for collecting A, B coordinates of two points from the center position (from the upstream to the downstream center) of a rolling area along the axial direction, A, B is a first coordinate point and a second coordinate point respectively, so that the walking mode is a straight line mode (figure 3), and a rolling vehicle rolls between the two points AB according to construction parameters. When a rolling curve is desired, the collection of C, D, E, F, G, H equal points (fig. 4) may continue, with the points being in the shape of an arc. Generating region txt documents with APP.

The upstream to downstream distance of the nip region is the nip width. If the whole rolling width is divided into 1 area rolling, the number of the areas is 1, and the number of times is 1. If the whole rolling width is divided into 2 left and right areas for rolling, the number of the areas is 2, the number of the vehicles for rolling the left area is 1, and the number of the vehicles for rolling the right area is 2. For the straight line vector AB, the left side is the left region, and the right side is the right region. The rolling width range can be 2 m-dam width.

(2) Coordinate preparation: the region txt document is sent to the control computer.

(3) Setting construction parameters (parameter setting panel): and entering control software to select a corresponding rolling area. And selecting the current construction vehicle number from the rolling machine number, and inputting the rolling machine number into the available vehicle number. The coordinates are loaded, at which point the received coordinate file is read into the system. And setting construction parameters, paving width, area number and order number.

(4) Start unmanned (roller mill control panel): and (4) confirming that all equipment indicating lamps of the rolling machine are in a normal state, and confirming that no dangerous personnel or vehicles are arranged beside the rolling machine or in a rolling area. And after the rotating speed of the engine is determined, the coordinates are issued, the unmanned rolling is started by a button, and the running speed, the vibration frequency and the like are set.

(5) Monitoring construction: and each status indicator lamp, the instrument panel, the rolling track and the monitoring camera are used for observing the construction status of the rolling machine in real time and adjusting the rolling machine for construction.

It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, descriptions related to "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Technical solutions between various embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.

Claims (6)

1. An unmanned roller compaction system for roller compacted concrete dams, comprising: the system comprises a first positioning device, a second positioning device, a GPS reference station, an unmanned rolling machine and a server, wherein the first positioning device is a portable GPS positioning device, the first positioning device is independent of the second positioning device, the second positioning device is fixedly arranged on the unmanned rolling machine, the first positioning device is in communication connection with the server through the GPS reference station, the second positioning device is in communication connection with the server through the GPS reference station, and the unmanned rolling machine is in communication connection with the server through the GPS reference station.

2. The unmanned roller compaction system for roller compacted concrete dams of claim 1, further comprising a wireless communication antenna, wherein the first positioning device and the GPS reference station are in wireless communication with the server through the wireless communication antenna.

3. The unmanned rolling system for the roller compacted concrete dam of claim 1, wherein the unmanned rolling machine is further provided with a laser radar (1), an electric steering wheel (3) and a communication device (8), the control device (9), the laser radar (1) is arranged at the front end of the unmanned rolling machine, the electric steering wheel (3) and the control device (9) are arranged in a cab of the unmanned rolling machine and used for controlling the unmanned rolling machine to walk, the communication device (8) is arranged at the top of the unmanned rolling machine, and the control device (9) is in wireless communication connection with the server through the communication device (8).

4. An unmanned roller compaction system for roller compacted concrete dams according to claim 3 wherein the unmanned roller compactor further comprises a vibration sensor (2), the vibration sensor (2) being electrically connected to the control means (9).

5. The unmanned roller compaction system for roller compacted concrete dams of claim 3, wherein the unmanned roller compaction further comprises a variable electric motor assembly (4), the variable electric motor assembly (4) being electrically connected to the control device (9).

6. An unmanned roller compaction system for roller compacted concrete dams according to claim 3, wherein the unmanned roller compactor further comprises an engine (5), the engine (5) being electrically connected to the control means (9).

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