CN115467333B - Self-compacting concrete high-efficiency diversion method and system for gravity dam - Google Patents
Self-compacting concrete high-efficiency diversion method and system for gravity dam Download PDFInfo
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- CN115467333B CN115467333B CN202211289846.2A CN202211289846A CN115467333B CN 115467333 B CN115467333 B CN 115467333B CN 202211289846 A CN202211289846 A CN 202211289846A CN 115467333 B CN115467333 B CN 115467333B
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000011376 self-consolidating concrete Substances 0.000 title claims abstract description 46
- 230000005484 gravity Effects 0.000 title claims abstract description 37
- 230000000903 blocking effect Effects 0.000 claims abstract description 174
- 239000004567 concrete Substances 0.000 claims abstract description 118
- 238000005259 measurement Methods 0.000 claims description 27
- 230000002265 prevention Effects 0.000 claims description 12
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001965 increasing effect Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000006870 function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/10—Gravity dams, i.e. those in which the weight of the structure prevents overturning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The application discloses a self-compacting concrete high-efficiency diversion method and system for a gravity dam, which relate to the technical field of gravity dam construction, and the method comprises the following steps: acquiring sound information of a diversion pipeline in the concrete diversion apparatus; based on the sound information, analyzing to obtain the current blocking state of the diversion pipeline, wherein the current blocking state comprises a blocking state and a circulation state; if the flow guide pipeline is in a blocking state, acquiring the blocking flow speed of self-compacting concrete in the flow guide pipeline, and analyzing to obtain the blocking position in the flow guide pipeline according to the blocking flow speed; based on the blocking state, the blocking position is treated by combining a vibrating loosening device preset on the outer wall of the diversion pipeline and a concrete conveying pump, and the concrete conveying pump is used for conveying self-compacting concrete to the diversion pipeline. The application has the effect of quickly dredging the blockage of the concrete diversion pipeline.
Description
Technical Field
The application relates to the technical field of gravity dam construction, in particular to a self-compacting concrete high-efficiency diversion method and system for a gravity dam.
Background
The gravity dam is a large-volume water retaining building built by concrete or slurry masonry, and the whole gravity dam consists of a plurality of dam segments. Under the action of water pressure and other loads, the gravity dam mainly depends on the anti-slip force generated by the dead weight of the dam body to meet the problem stability requirement; meanwhile, the tensile stress caused by the water pressure is offset by the self-gravity pressure of the dam body so as to meet the strength requirement. According to statistics, the proportion of the concrete gravity dam in dam construction is half.
In concrete construction works, it is a very important step to smoothly guide a huge amount of concrete in an engineering within a proper time because of the setting time limit of the concrete itself. The smoothness of the concrete diversion process can directly determine the completion efficiency of the final engineering. The existing smooth flow guide guaranteeing method is to judge the blocking condition by means of a pressure gauge and only relies on a manual way of matching a conveying pump.
With respect to the related art in the above, the inventors consider that there are the following drawbacks: because the concrete demand for the gravity dam is large, the concrete diversion pipeline is very long, and the mode of judging the blocking condition by means of the pressure gauge is simple and single and can not reflect the blocking position. Meanwhile, the problem is solved only by adjusting the conveying pump, and the concrete diversion time is prolonged.
Disclosure of Invention
In order to overcome the defect that the blocking position cannot be timely reflected in the traditional guarantee diversion means and the blocking problem cannot be quickly and effectively solved, the application provides a self-compacting concrete high-efficiency diversion method and system for a gravity dam.
In a first aspect, the present application provides a method for efficient diversion of self-compacting concrete for gravity dams, comprising the steps of:
acquiring sound information of a diversion pipeline in the concrete diversion apparatus;
based on the sound information, analyzing and obtaining the current blocking state type of the diversion pipeline, wherein the current blocking state comprises a blocking state and a circulation state;
if the diversion pipeline is in a blocking state, acquiring the blocking flow speed of self-compacting concrete in the diversion pipeline, and analyzing and obtaining a blocking position in the diversion pipeline according to the blocking flow speed;
based on the blocking state, the blocking position is processed by combining a vibrating loosening device preset on the outer wall of the diversion pipeline and a concrete conveying pump, wherein the concrete conveying pump is used for conveying the self-compacting concrete to the diversion pipeline.
Through adopting above-mentioned technical scheme, obtain the volume signal of the water conservancy diversion pipeline of concrete water conservancy diversion apparatus through the sound measurement sensor, judge the circulation state in the water conservancy diversion pipeline according to volume size. If in a normal flow state, the volume level will be within a certain range. If in the blocked state, the volume is lower than normal or higher than the set range. The flow velocity of the concrete can be obtained through the velocity measurement sensor, and the position of the change of the flow velocity can be deduced through the comparison of the flow velocities among different groups of adjacent velocity measurement points, so that the situation that the flow velocity of the concrete is blocked is deduced. The pile blocks in the pipeline are loosened through the vibration device preset on the pipeline, and the pile blocks are washed away by the thrust provided by the conveying pump, so that the concrete is smoothly guided.
Optionally, the sound information includes volume data, and based on the sound information, the current blocking state type of the diversion pipeline is obtained through analysis, and the current blocking state includes a blocking state and a circulation state, and includes the following steps:
judging whether the volume data is larger than a preset first volume threshold value or not;
if the volume data is smaller than the first volume threshold value, judging that the diversion pipeline is in a common blocking state;
If the volume data is larger than the first volume threshold, judging whether the volume data is larger than a preset second volume threshold or not, wherein the second volume threshold is larger than the first volume threshold;
if the volume data is smaller than the second volume threshold value, judging that the diversion pipeline is in a primary circulation state;
if the volume data is larger than the second volume threshold, judging whether the volume data is larger than a preset third volume threshold or not, wherein the third volume threshold is larger than the second volume threshold;
if the volume data is smaller than the third volume threshold, judging that the diversion pipeline is in the secondary circulation state;
and if the volume data is larger than the third volume threshold, judging that the diversion pipeline is in the serious blocking state.
By adopting the technical scheme, the collected volume data can reflect the flow conditions in the pipeline, but the specific conditions can be obtained by a certain analysis. If the volume is lower than the first volume threshold, the pipeline is blocked, and the concrete cannot flow and is kept in a static state. If the volume is between the first volume threshold and the third volume threshold, the concrete flows at a certain speed and is kept in a moving state. If the volume exceeds the third volume threshold, the blocking problem causes a linkage effect, and mechanical structures such as a conveying pump vibrate.
Optionally, the step of obtaining the blocking flow rate of the self-compacting concrete in the diversion pipeline, and analyzing the blocking position in the diversion pipeline according to the blocking flow rate includes the following steps:
obtaining the blocking flow speed of self-compacting concrete of a plurality of preset speed measuring points in the diversion pipeline;
judging whether the blocking flow speed of each speed measuring point is lower than a preset blocking flow speed threshold value or not;
if the blocking flow speed is lower than the blocking flow speed threshold value, the corresponding speed measuring point is marked as a first target point;
marking a speed measuring point adjacent to the first target point as a second target point based on the opposite direction of the diversion pipeline;
judging whether the blocking flow speed of the second target point is higher than the blocking flow speed threshold value;
and if the blockage flow speed of the second target point is higher than the blockage flow speed threshold, judging that the blockage position is positioned between the first target point and the second target point.
By adopting the technical scheme, if the diversion pipeline is in a blocking state, the concrete flow speed in the pipeline is required to be greatly reduced from a certain position, then the point with the flow speed lower than the normal speed threshold value is required to be found, then the point is compared with the adjacent point with the reverse diversion direction, and if the comparison result shows that the obvious descending trend is obtained, the conclusion that the blocking object appears between the two points is obtained.
Optionally, the concrete pump includes a high-low pressure delivery mode and a forward-reverse delivery mode, and based on the blocking state, the blocking position is processed by combining a vibration loosening device preset on the outer wall of the diversion pipeline and the concrete pump to dredge the diversion pipeline, and the method includes the following steps:
judging whether the blocking state is a common blocking state or a serious blocking state;
if the blocking state is the common blocking state, starting the vibration loosening device and switching the concrete conveying pump to a high-low pressure conveying mode to process the blocking position so as to dredge the diversion pipeline;
and if the blocking state is the serious blocking state, starting the vibrating loosener and switching the concrete conveying pump to a forward and reverse conveying mode to process the blocking position so as to dredge the diversion pipeline.
By adopting the technical means, because the results caused by the blockage problem are different, corresponding measures are needed to solve the blockage problem. If the flow speed is reduced simply because the concrete flow is not smooth, the blockage can be removed by increasing the thrust. If a strong vibration of the relevant mechanical parts is induced, the pipeline is blocked, and the blocking needs to be cleared by utilizing the reverse thrust and the forward thrust of the conveying pump.
Optionally, the step of starting the vibration loosener and switching the concrete conveying pump to a high-low pressure conveying mode to treat the blocking position so as to dredge the diversion pipeline comprises the following steps of:
starting the vibrating loosener to vibrate and knock the outer wall of the guide pipeline at the blocking position;
controlling the concrete conveying pump to switch from a low-pressure conveying mode to a high-pressure conveying mode, and enhancing conveying thrust to dredge the diversion pipeline;
and controlling the concrete conveying pump to switch to a low-pressure conveying mode.
By adopting the technical scheme, the vibratory loosening device loosens the blocking pile blocks, then the conveying pump increases the thrust, the pile blocks are destroyed by using huge thrust to dredge the blocking, and finally the thrust of the conveying pump is reduced to protect the conveying pump.
Optionally, the step of starting the vibration loosener and switching the concrete conveying pump to a forward and reverse conveying mode to treat the blocking position so as to dredge the diversion pipeline comprises the following steps of:
starting the vibrating loosener to vibrate and knock the outer wall of the guide pipeline at the blocking position;
controlling the concrete conveying pump to switch from a forward conveying mode to a reverse conveying mode;
and after the preset switching time, controlling the concrete conveying pump to switch from a reverse conveying mode to a forward conveying mode.
By adopting the technical scheme, because the flow guide pipeline is in a serious blocking state, the condition that the inside of the pipeline is blocked is indicated, then the forward thrust is increased only to damage the flow guide device, then the forward thrust and the reverse thrust are utilized to cooperate with the vibrating loosening device to enable the blocked pile to be scattered, and the flow guide pipeline is dredged.
Optionally, the application provides a self-compacting concrete high-efficiency diversion method for a gravity dam, which further comprises the following steps:
if the diversion pipeline is in a circulation state, acquiring the passing flow speed of self-compacting concrete in the diversion pipeline, and predicting the future blocking state of the diversion pipeline according to the passing flow speed;
and generating a blockage prevention scheme based on the future unblocking state, and controlling the vibration loosener and the concrete delivery pump according to the blockage prevention scheme to reduce the probability of blockage of the diversion pipeline.
By adopting the technical scheme, the concrete in the circulation state is likely to be blocked in the future, and then the speed acquisition mode and the speed processing mode are required to be replaced, so that the processed data can have a certain prediction function, and meanwhile, the hidden trouble problem is eliminated by matching with the vibration loosening device, so that the diversion efficiency is improved.
Optionally, the obtaining the passing flow speed of the self-compacting concrete in the diversion pipeline and predicting the future plugging state of the diversion pipeline according to the passing flow speed includes the following steps:
acquiring the passing flow speeds of a plurality of preset speed measuring points in the diversion pipeline, wherein the passing flow speeds comprise a first passing flow speed and a second passing flow speed, and the acquisition time of the first passing flow speed is earlier than that of the second passing flow speed;
calculating the average value of the first passing flow speed and the second passing flow speed to obtain the average passing flow speed;
judging whether the circulation state is the primary circulation state or the secondary circulation state;
if the circulation state is the primary circulation state, comparing the first passing flow speed and the second passing flow speed of the speed measuring point;
if a speed measuring point exists, the first passing flow speed of which is higher than the second passing flow speed, predicting the future passing blocking state to be a primary early warning state, and marking the speed measuring point to be a primary early warning point;
if no speed measuring point exists, the first passing flow speed is higher than the second passing flow speed, and the future blocking state is predicted to be a first-level normal state;
If the circulation state is the secondary circulation state, the average passing flow speed of two adjacent speed measuring points is selected at will, and the two speed measuring points are marked as a first speed measuring point and a second speed measuring point in sequence according to the flow guiding direction of the flow guiding pipeline;
comparing the average passing flow velocity of the first speed measurement point and the second speed measurement point;
if the average passing flow speed of the first speed measurement point is higher than the average passing flow speed of the second speed measurement point, predicting that the future blocking state is a secondary early warning state, and marking that a secondary early warning point is arranged between the first speed measurement point and the second speed measurement point;
and if the average passing flow speed of the first speed measurement point is equal to the average passing flow speed of the second sampling point, predicting that the future blocking state is a secondary normal state.
By adopting the technical scheme, the speed can be increased to a certain value or reduced to a certain value in the circulation state, so that different speed measuring modes and prediction schemes are adopted for different flow speeds. When the flow is in a low-speed flow state, the speed value of different time points of a single point can reflect the concrete flow condition in the whole diversion pipeline. If the speed values at different time points are the same, the tendency that the blockage does not occur is indicated, and if the speed values at different time points are changed, the tendency that the blockage occurs is indicated. When the concrete flows at a high speed, the speed value of a single point cannot be high in precision, so that the concrete flow condition can be judged by adopting a speed value comparison method of two points, if the speed between the two points is changed, the blocking trend is indicated, and if the speed between the two points is not changed, the blocking trend is indicated.
Optionally, the generating a blockage prevention scheme based on the future unblocking state, and controlling the vibration loosener and the concrete delivery pump according to the blockage prevention scheme to reduce the probability of blockage of the diversion pipeline includes the steps of:
judging whether the future unblocking state is a primary early warning state or a secondary early warning state;
if the future unblocking state is the primary early warning state, starting the vibration loosening device to vibrate and knock the outer wall of the diversion pipeline at the primary early warning point;
and if the future unblocking state is the secondary early warning state, reducing the working power of the concrete conveying pump, and simultaneously starting the vibration loosening device to vibrate and knock the outer wall of the diversion pipeline at the secondary early warning point.
By adopting the technical scheme, if the blocking tendency exists in the low-speed flowing state, only the blocking pile blocks at the blocking position are required to be loosened, if the blocking tendency exists in the high-speed flowing state, the flowing speed is reduced to relieve the increase of the blocking pile blocks, and then the blocking pile blocks at the blocking position are required to be loosened in the low-speed flowing state.
In a second aspect, the present application provides a self-compacting concrete high-efficiency diversion system for a gravity dam, comprising a processor and a memory, wherein the processor, when executing computer instructions stored in the memory, performs a self-compacting concrete high-efficiency diversion method for a gravity dam as described in the first aspect.
Through adopting above-mentioned technical scheme, through the calling of procedure, obtain the volume signal of the water conservancy diversion pipeline of concrete water conservancy diversion apparatus through the sound measurement sensor, judge the circulation state in the water conservancy diversion pipeline according to volume size. If in a normal flow state, the volume level will be within a certain range. If in the blocked state, the volume is lower than normal or higher than the set range. The flow velocity of the concrete can be obtained through the velocity measurement sensor, and the position of the change of the flow velocity can be deduced through the comparison of the flow velocities among different groups of adjacent velocity measurement points, so that the situation that the flow velocity of the concrete is blocked is deduced. The pile blocks in the pipeline are loosened through the vibration device preset on the pipeline, and the pile blocks are washed away by the thrust provided by the conveying pump, so that the concrete is smoothly guided.
In summary, the present application includes at least one of the following beneficial technical effects:
1. and acquiring a volume signal of a diversion pipeline of the concrete diversion instrument through the sounding sensor, and judging the circulation state in the diversion pipeline according to the volume. If in a normal flow state, the volume level will be within a certain range. If in the blocked state, the volume is lower than normal or higher than the set range. The flow velocity of the concrete can be obtained through the velocity measurement sensor, and the position of the change of the flow velocity can be deduced through the comparison of the flow velocities among different groups of adjacent velocity measurement points, so that the situation that the flow velocity of the concrete is blocked is deduced. The pile blocks in the pipeline are loosened through the vibration device preset on the pipeline, and the pile blocks are washed away by the thrust provided by the conveying pump, so that the concrete is smoothly guided.
2. The concrete in the circulation state is also likely to have a blocking problem in the future, so that the speed acquisition mode and the speed processing mode can be replaced, the processed data can have a certain prediction function, and meanwhile, the hidden trouble problem is eliminated by matching with the vibration loosening device, so that the diversion efficiency is improved.
Drawings
Fig. 1 is a schematic flow chart of one implementation of a self-compacting concrete high-efficiency diversion method for gravity dams according to an embodiment of the present application.
Fig. 2 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams according to the embodiment of the application.
Fig. 3 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams according to the embodiment of the application.
Fig. 4 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams according to the embodiment of the application.
Fig. 5 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams according to the embodiment of the application.
FIG. 6 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams of the embodiments of the present application.
Fig. 7 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams according to the embodiment of the application.
Fig. 8 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams according to the embodiment of the application.
Fig. 9 is a schematic flow chart of one implementation of the self-compacting concrete high-efficiency diversion method for gravity dams according to the embodiment of the application.
Detailed Description
The present application is described in further detail below in conjunction with figures 1 to 9.
The embodiment of the application discloses a self-compacting concrete high-efficiency diversion method and system for a gravity dam.
Referring to fig. 1, a self-compacting concrete high-efficiency diversion method for a gravity dam includes the steps of:
s101, acquiring sound information of a diversion pipeline in the concrete diversion apparatus.
The sound measuring sensor is mainly arranged at the bending parts of the conveying pump, the concrete stirring tower and the pipeline to acquire the volume and the change trend of the volume amplitude.
S102, based on the sound information, analyzing to obtain the current blocking state of the diversion pipeline, wherein the current blocking state comprises a blocking state and a circulation state, and if the blocking state is judged, executing S103.
If the circulation state is judged, the future blocking state is predicted, and a prevention scheme is generated.
S103, if the diversion pipeline is in a blocking state, acquiring the blocking flow speed of self-compacting concrete in the diversion pipeline, and analyzing to obtain the blocking position in the diversion pipeline according to the blocking flow speed.
Wherein a velocity sensor is placed in the conduit to obtain the flow rate.
S104, based on the blocking state, the blocking position is processed by combining a vibration loosening device preset on the outer wall of the diversion pipeline and a concrete conveying pump, and the concrete conveying pump is used for conveying self-compacting concrete to the diversion pipeline.
Wherein the vibration loosener comprises a linear motor and a vibration motor.
The implementation principle of one implementation mode of the embodiment of the application is as follows: and acquiring a volume signal of a diversion pipeline of the concrete diversion instrument through the sounding sensor, and judging the circulation state in the diversion pipeline according to the volume. If in a normal flow state, the volume level will be within a certain range. If in the blocked state, the volume is lower than normal or higher than the set range. The flow velocity of the concrete can be obtained through the velocity measurement sensor, and the position of the change of the flow velocity can be deduced through the comparison of the flow velocities among different groups of adjacent velocity measurement points, so that the situation that the flow velocity of the concrete is blocked is deduced. The pile blocks in the pipeline are loosened through the vibration device preset on the pipeline, and the pile blocks are washed away by the thrust provided by the conveying pump, so that the concrete is smoothly guided.
In one implementation manner of the embodiment of the present application, referring to fig. 2, the specific step of determining that the diversion pipeline is in the blocked state or the circulation state by using the sound information in step S102 includes:
s201, judging whether the volume data is larger than a preset first volume threshold, if so, executing the step S202, and if so, executing the step S203.
S202, judging that the diversion pipeline is in a common blocking state.
The common blocking state is a state that the flowing speed of the concrete is reduced and is lower than the specified input speed, and the friction sound between the concrete and the inner wall of the diversion pipeline is continuously reduced.
S203, judging whether the volume data is larger than a preset second volume threshold, if so, executing the step S204, and if so, executing the step S205.
Wherein the second volume threshold is greater than the first volume threshold.
S204, judging that the diversion pipeline is in a primary circulation state.
The volume in the primary circulation state is the volume generated by normal friction between the concrete in the pipeline and the inner wall of the diversion pipeline in the low-speed circulation state.
S205, judging whether the volume data is larger than a preset third volume threshold, if the volume data is smaller than the third volume threshold, executing step S206, and if the volume data is smaller than the third volume threshold, executing step S207.
Wherein the third volume threshold is greater than the second volume threshold.
S206, judging that the diversion pipeline is in a secondary circulation state.
The second-level circulation state is a state that friction sound generated by the concrete in the pipeline and the inner wall of the diversion pipeline is increased due to too fast moving speed under the high-speed circulation state.
S207, if the volume data is larger than a third volume threshold value, judging that the diversion pipeline is in a serious blockage state.
The serious blocking state is a state that volume data of a certain position in a pipeline is extremely small, and sound of a delivery pump is increased to be extremely large due to strong vibration.
The implementation principle of one implementation mode of the embodiment of the application is as follows: the collected volume data can reflect the flow conditions in the pipeline, but specific conditions can be obtained through a certain analysis. If the volume is lower than the first volume threshold, the pipeline is blocked, and the concrete cannot flow and is kept in a static state. If the volume is between the first volume threshold and the third volume threshold, the concrete flows at a certain speed and is kept in a moving state. If the volume exceeds the third volume threshold, the blocking problem is caused by the interlocking effect, so that the mechanical structures such as the conveying pump vibrate to generate a huge sound.
In one implementation manner of the embodiment of the present application, referring to fig. 3, step S103 of obtaining the concrete flow rate in the diversion pipeline specifically includes the following steps:
s301, obtaining the blocking flow speed of the self-compacting concrete of a plurality of preset speed measuring points in the diversion pipeline.
The blocking flow speed is concrete flow speed data which can be acquired by a speed measuring point under a blocking state.
The speed measuring points are usually arranged at the bending part and the connecting part of the guide pipeline, and three speed measuring points are also required to be distributed on the straight pipeline at equal distance.
S302, judging whether the blocking flow speed of each speed measuring point is lower than a preset blocking flow speed threshold value or not, and executing S303 if the blocking flow speed is lower than the blocking flow speed threshold value.
S303, marking the corresponding speed measuring point as a first target point.
S304, marking a speed measuring point adjacent to the first target point as a second target point based on the opposite direction of the diversion pipeline.
The first concrete mixing tower is taken as a starting point, a discharge hole of the mixing tower is taken as a finishing point, and the advancing direction along the diversion pipeline is taken as a diversion direction.
S305, judging whether the blockage flow speed of the second target point is higher than a blockage flow speed threshold. If the occlusion flow rate of the second target point is higher than the occlusion flow rate threshold, step S306 is performed.
S306, judging that the blocking position is located between the first target point and the second target point.
The implementation principle of one implementation mode of the embodiment of the application is as follows: if the diversion pipeline is in a blocking state, the flow speed of the concrete in the pipeline is required to be greatly reduced from a certain position, then a point with the flow speed lower than a normal speed threshold value is required to be found, then the point is compared with an adjacent point with the reverse diversion direction, and if the comparison result shows that the flow speed is obviously reduced, a conclusion that the blocking object appears between the two points is drawn.
In one implementation of the embodiment of the present application, referring to fig. 4, the method for solving the blocking problem in step S104 includes the following steps:
s401, judging that the blocking state is a normal blocking state or a serious blocking state, if the blocking state is the normal blocking state, executing the step S402, and if the blocking state is the serious blocking state, executing the step S403.
S402, starting the vibration loosener and switching the concrete conveying pump to a high-low pressure conveying mode to treat the blocking position so as to dredge the diversion pipeline.
The vibration loosening device is started by taking the blocking position as a base point and starting the vibration loosening device at the corresponding position according to the principle of closest distance.
The high-low pressure delivery mode is classified according to the outlet pressure level of the concrete delivery pump, and generally, if the pressure is lower than 7MPa, and the pressure is higher than 7 MPa.
S403, starting the vibration loosener and switching the concrete conveying pump to a forward and reverse conveying mode to treat the blocking position so as to dredge the diversion pipeline.
The forward and reverse conveying mode is a process of pushing concrete into a pipeline and sucking concrete into a hopper by utilizing the working principles of forward pumping and reverse operation of a pump.
The implementation principle of one implementation method in the embodiment of the application is as follows: since the consequences of the plugging problem are different, corresponding measures need to be taken to solve the plugging problem. If the flow speed is reduced simply because the concrete flow is not smooth, the blockage can be removed by increasing the thrust. If a strong vibration of the relevant mechanical parts is induced, the pipeline is blocked, and the blocking needs to be cleared by utilizing the reverse thrust and the forward thrust of the conveying pump.
In one implementation method of the embodiment of the present application, referring to fig. 5, the step S402 of processing the normal blocking state specifically includes the following steps:
s501, starting the vibration loosener to vibrate and knock the outer wall of the guide pipeline at the blocking position.
S502, controlling the concrete conveying pump to switch from a low-pressure conveying mode to a high-pressure conveying mode, and enhancing conveying thrust to dredge the diversion pipeline.
Wherein the high-pressure conveying mode is an adjustable mode in which the conveying pump is gradually increased from 7 MPa.
S503, controlling the concrete conveying pump to switch to a low-pressure conveying mode.
Wherein the low pressure delivery mode is an adjustable mode of the delivery pump from 0MPa to 7 MPa.
The principle of one implementation of the embodiment of the application is as follows: the vibratory loosening device loosens the blocking pile blocks, then the conveying pump increases the thrust, the blocking pile blocks are broken by using huge thrust to dredge the blocking, and finally the thrust of the conveying pump is reduced to protect the conveying pump.
In one implementation of the embodiment of the present application, referring to fig. 6, the step S403 of handling the severe blockage state specifically includes the following steps:
s601, starting the vibrating loosener to vibrate and knock the outer wall of the guide pipeline at the blocking position.
S602, controlling the concrete conveying pump to switch from a forward conveying mode to a reverse conveying mode.
The reverse conveying mode is that under the action of the main oil cylinder, the piston of the concrete conveying pump retreats to suck concrete into the hopper and the concrete cylinder.
S603, controlling the concrete conveying pump to switch from a reverse conveying mode to a forward conveying mode after preset switching time.
The forward conveying mode is that the concrete piston moves forward under the action of the main oil cylinder to convey the concrete material in the concrete cylinder into the distributing valve for pumping.
The preset switching time is required to be determined according to the specific situation, and usually only 1 minute is required, but if the reverse conveying is still not solved, the preset switching time is required to be prolonged simultaneously by combining the high-pressure conveying mode and the reverse conveying mode so as to ensure that the problem is fully solved.
The implementation principle of one implementation mode of the embodiment of the application is as follows: because the diversion pipeline is in a serious blocking state, the condition that the blockage in the pipeline happens is indicated, the forward thrust is increased only to destroy the diversion apparatus, and the forward thrust and the reverse thrust are matched with the vibrating loosening device to enable the blocking pile to be scattered, so that the diversion pipeline is dredged.
In one implementation manner of the embodiment of the present application, referring to fig. 7, step S102 of obtaining the circulation status and predicting the future blocking status specifically includes the following steps:
s701, if the diversion pipeline is in a circulation state, acquiring the passing flow speed of self-compacting concrete in the diversion pipeline, and predicting the future blocking state of the diversion pipeline according to the passing flow speed.
The passing flow speed is speed data which can be acquired by a speed measuring point in a flowing state.
Wherein the future unblocking state is a unblocking state predicted for a next preset time interval, e.g., within 1 minute, based on the current speed and a speed before the preset time interval, e.g., 1 minute
S702, generating a blockage prevention scheme based on a future blockage state, and controlling the vibration loosener and the concrete conveying pump according to the blockage prevention scheme so as to reduce the blockage probability of the diversion pipeline.
The implementation principle of one implementation mode of the embodiment of the application is as follows: the concrete in the circulation state is also likely to have a blocking problem in the future, and then the speed acquisition mode and the speed processing mode are required to be replaced, so that the processed data can have a certain prediction function, and meanwhile, the hidden trouble problem is eliminated by matching with the vibration loosening device, so that the diversion efficiency is improved.
In one implementation manner of the embodiment of the present application, referring to fig. 8, a method for predicting a future unblocking state in step S701 specifically includes the following steps:
s801, acquiring the passing flow speeds of a plurality of preset speed measuring points in the diversion pipeline.
The passing flow speed comprises a first passing flow speed and a second passing flow speed, and the collecting time of the first passing flow speed is earlier than that of the second passing flow speed.
S802, calculating the average value of the first passing flow speed and the second passing flow speed to obtain the average passing flow speed.
S803, judging whether the circulation state is a primary circulation state or a secondary circulation state, if the circulation state is the primary circulation state, executing step S804, and if the circulation state is the secondary circulation state, executing step S806.
S804, comparing the first passing flow speed and the second passing flow speed of the speed measuring point, if the speed measuring point with the first passing flow speed higher than the second passing flow speed exists, executing the step S805, and if the speed measuring point with the first passing flow speed higher than the second passing flow speed does not exist, executing the step S806.
S805, predicting that the future unblocking state is a primary early warning state, and marking a speed measuring point as a primary early warning point.
When the first-level early warning state is the first-level circulation speed of the concrete in the circulation state, the situation that the diversion pipeline is possibly blocked in the next preset time interval, for example, 1 minute, is predicted.
S806, predicting that the future unblocking state is a first-level normal state.
The first-level normal state is that the concrete does not have any blockage problem in the next preset time interval, for example, 1 minute.
S807, the average passing flow speed of two adjacent speed measuring points is selected at will, and the two speed measuring points are marked as a first speed measuring point and a second speed measuring point in sequence according to the flow guiding direction of the flow guiding pipeline.
S808, comparing the average passing flow speeds of the first speed measuring point and the second speed measuring point, if the average passing flow speed of the first speed measuring point is higher than the average passing flow speed of the second speed measuring point, executing the step S809, and if the average passing flow speed of the first speed measuring point is equal to the average passing flow speed of the second sampling point, executing the step S810;
s809, predicting that the future blocking state is a secondary early warning state, and marking a secondary early warning point between the first speed measuring point and the second speed measuring point;
when the secondary early warning state is the secondary circulation speed of the concrete in the circulation state, the problem of blockage in the next preset time interval, for example, 1 minute, is predicted.
S810, predicting that the future unblocked state is a secondary normal state.
The second-level normal state is that the concrete does not have any blockage problem in the next preset time interval, for example, 1 minute.
The implementation principle of one implementation mode of the embodiment of the application is as follows: because the speed can be increased to a certain value or reduced to a certain value in the circulation state, different speed measuring modes and prediction schemes are adopted for different flow speeds. When the flow is in a low-speed flow state, the speed value of different time points of a single point can reflect the concrete flow condition in the whole diversion pipeline. If the speed values at different time points are the same, the tendency that the blockage does not occur is indicated, and if the speed values at different time points are changed, the tendency that the blockage occurs is indicated. When the concrete flows at a high speed, the speed value of a single point cannot be high in precision, so that the concrete flow condition can be judged by adopting a speed value comparison method of two points, if the speed between the two points is changed, the blocking trend is indicated, and if the speed between the two points is not changed, the blocking trend is indicated.
In one implementation manner of the embodiment of the present application, referring to fig. 9, step S702 of generating a prevention scheme specifically includes the following steps:
s901, judging whether the future blocking state is a primary early warning state or a secondary early warning state, if the future blocking state is the primary early warning state, executing the step S902, and if the future blocking state is the secondary early warning state, executing the step S903.
S902, starting the vibration loosener to vibrate and knock the outer wall of the diversion pipeline at the primary early warning point.
The vibration loosening device is started specifically based on the first-level early warning point position, the vibration sensor at the corresponding position is started on the principle of nearest distance to knock the outer wall of the vibration loosening device, and the energy provided by vibration is utilized to loosen the crude bone material pile block so as to be dispersed by concrete.
S903, working power of the concrete delivery pump is reduced, and meanwhile, the vibration loosener is started to vibrate and knock the outer wall of the diversion pipeline at the secondary early warning point.
The vibration loosening device is specifically started based on the position of a secondary early warning point, a vibration sensor at a corresponding position is started based on the principle of closest distance to the outer wall of the vibration loosening device, and the energy provided by vibration is utilized to loosen the coarse bone material pile blocks so as to be dispersed by concrete.
The implementation principle of one implementation mode of the embodiment of the application is as follows: if there is a blocking tendency in the low-velocity flow state, only the blocking pile at the blocking position needs to be loosened, and if there is a blocking tendency in the high-velocity flow state, the flow velocity needs to be reduced to relieve the increase of the blocking pile, and then the blocking pile at the blocking position needs to be loosened in the low-velocity flow state.
The embodiment of the application also discloses a high-efficiency diversion system for the self-compaction concrete of the gravity dam, which comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the program can realize the high-efficiency diversion method for the self-compaction concrete of the gravity dam in the embodiment when loaded and executed by the processor.
The principle of the embodiment of the application is as follows:
and acquiring a volume signal of a diversion pipeline of the concrete diversion instrument through a sound measuring sensor by calling a program, and judging the circulation state in the diversion pipeline according to the volume. If in a normal flow state, the volume level will be within a certain range. If in the blocked state, the volume is lower than normal or higher than the set range. The flow velocity of the concrete can be obtained through the velocity measurement sensor, and the position of the change of the flow velocity can be deduced through the comparison of the flow velocities among different groups of adjacent velocity measurement points, so that the situation that the flow velocity of the concrete is blocked is deduced. The pile blocks in the pipeline are loosened through the vibration device preset on the pipeline, and the pile blocks are washed away by the thrust provided by the conveying pump, so that the concrete is smoothly guided.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The self-compacting concrete high-efficiency diversion method for the gravity dam is characterized by comprising the following steps of:
acquiring sound information of a diversion pipeline in the concrete diversion apparatus;
based on the sound information, analyzing to obtain the current blocking state of the diversion pipeline, wherein the current blocking state comprises a blocking state and a circulation state;
if the diversion pipeline is in a blocking state, acquiring the blocking flow speed of self-compacting concrete in the diversion pipeline, and analyzing and obtaining a blocking position in the diversion pipeline according to the blocking flow speed;
based on the blocking state, treating the blocking position by combining a vibrating loosening device preset on the outer wall of the diversion pipeline and a concrete conveying pump, wherein the concrete conveying pump is used for conveying the self-compacting concrete to the diversion pipeline;
the sound information comprises volume data, the current blocking state type of the diversion pipeline is obtained through analysis based on the sound information, the current blocking state comprises a blocking state and a circulation state, and the method comprises the following steps of:
judging whether the volume data is larger than a preset first volume threshold value or not;
If the volume data is smaller than the first volume threshold value, judging that the diversion pipeline is in a common blocking state;
if the volume data is larger than the first volume threshold, judging whether the volume data is larger than a preset second volume threshold or not, wherein the second volume threshold is larger than the first volume threshold;
if the volume data is smaller than the second volume threshold value, judging that the diversion pipeline is in a primary circulation state;
if the volume data is larger than the second volume threshold, judging whether the volume data is larger than a preset third volume threshold or not, wherein the third volume threshold is larger than the second volume threshold;
if the volume data is smaller than the third volume threshold value, judging that the diversion pipeline is in a secondary circulation state;
if the volume data is larger than the third volume threshold value, judging that the diversion pipeline is in a serious blocking state;
the method for obtaining the blocking flow speed of the self-compacting concrete in the diversion pipeline comprises the following steps of:
obtaining the blocking flow speed of self-compacting concrete of a plurality of preset speed measuring points in the diversion pipeline;
Judging whether the blocking flow speed of each speed measuring point is lower than a preset blocking flow speed threshold value or not;
if the blocking flow speed is lower than the blocking flow speed threshold value, the corresponding speed measuring point is marked as a first target point;
marking a speed measuring point adjacent to the first target point as a second target point based on the opposite direction of the diversion pipeline;
judging whether the blocking flow speed of the second target point is higher than the blocking flow speed threshold value;
and if the blockage flow speed of the second target point is higher than the blockage flow speed threshold, judging that the blockage position is positioned between the first target point and the second target point.
2. A self-compacting concrete high-efficiency diversion method for a gravity dam according to claim 1, wherein the concrete transfer pump comprises a high-low pressure transfer mode and a forward-reverse transfer mode, and the treating the blocked position based on the blocked state in combination with a vibration loosener and a concrete transfer pump preset on the outer wall of the diversion pipeline to unblock the diversion pipeline comprises the steps of:
judging whether the blocking state is a common blocking state or a serious blocking state;
If the blocking state is the common blocking state, starting the vibration loosening device and switching the concrete conveying pump to a high-low pressure conveying mode to process the blocking position so as to dredge the diversion pipeline;
and if the blocking state is the serious blocking state, starting the vibrating loosener and switching the concrete conveying pump to a forward and reverse conveying mode to process the blocking position so as to dredge the diversion pipeline.
3. A self-compacting concrete high-efficiency diversion method for a gravity dam as claimed in claim 2, wherein said activating the vibratory loosening and switching the concrete transfer pump to a high-low pressure transfer mode treats the blocked position to unblock the diversion conduit comprises the steps of:
starting the vibrating loosener to vibrate and knock the outer wall of the guide pipeline at the blocking position;
controlling the concrete conveying pump to switch from a low-pressure conveying mode to a high-pressure conveying mode, and enhancing conveying thrust to dredge the diversion pipeline;
and controlling the concrete conveying pump to switch to a low-pressure conveying mode.
4. A self-compacting concrete high-efficiency diversion method for a gravity dam as claimed in claim 2, wherein said activating the vibratory loosening and switching the concrete transfer pump to forward and reverse transfer mode treats the blocked position to unblock the diversion conduit comprises the steps of:
Starting the vibrating loosener to vibrate and knock the outer wall of the guide pipeline at the blocking position;
controlling the concrete conveying pump to switch from a forward conveying mode to a reverse conveying mode;
and after the preset switching time, controlling the concrete conveying pump to switch from a reverse conveying mode to a forward conveying mode.
5. The method for efficient diversion of self-compacting concrete for gravity dams of claim 1, further comprising the steps of:
if the diversion pipeline is in a circulation state, acquiring the passing flow speed of self-compacting concrete in the diversion pipeline, and predicting the future blocking state of the diversion pipeline according to the passing flow speed;
and generating a blockage prevention scheme based on the future unblocking state, and controlling the vibration loosener and the concrete delivery pump according to the blockage prevention scheme to reduce the probability of blockage of the diversion pipeline.
6. The method for efficient diversion of self-compacting concrete for a gravity dam according to claim 5, wherein said obtaining a traffic flow velocity of self-compacting concrete in said diversion conduit and predicting a future unblocking state of said diversion conduit based on said traffic flow velocity comprises the steps of:
Acquiring the passing flow speeds of a plurality of preset speed measuring points in the diversion pipeline, wherein the passing flow speeds comprise a first passing flow speed and a second passing flow speed, and the acquisition time of the first passing flow speed is earlier than that of the second passing flow speed;
calculating the average value of the first passing flow speed and the second passing flow speed to obtain the average passing flow speed;
judging whether the circulation state is the primary circulation state or the secondary circulation state;
if the circulation state is the primary circulation state, comparing the first passing flow speed and the second passing flow speed of the speed measuring point;
if a speed measuring point exists, the first passing flow speed of which is higher than the second passing flow speed, predicting the future passing blocking state to be a primary early warning state, and marking the speed measuring point to be a primary early warning point;
if no speed measuring point exists, the first passing flow speed is higher than the second passing flow speed, and the future blocking state is predicted to be a first-level normal state;
if the circulation state is the secondary circulation state, the average passing flow speed of two adjacent speed measuring points is selected at will, and the two speed measuring points are marked as a first speed measuring point and a second speed measuring point in sequence according to the flow guiding direction of the flow guiding pipeline;
Comparing the average passing flow velocity of the first speed measurement point and the second speed measurement point;
if the average passing flow speed of the first speed measurement point is higher than the average passing flow speed of the second speed measurement point, predicting that the future blocking state is a secondary early warning state, and marking that a secondary early warning point is arranged between the first speed measurement point and the second speed measurement point; and if the average passing flow speed of the first speed measurement point is equal to the average passing flow speed of the second speed measurement point, predicting that the future blocking state is a secondary normal state.
7. A self-compacting concrete high-efficiency diversion method for a gravity dam as claimed in claim 6, wherein said generating a blockage prevention scheme based on said future unblocking status and controlling said vibratory loosener and said concrete transfer pump in accordance with said blockage prevention scheme to reduce the probability of blockage of said diversion conduit comprises the steps of:
judging whether the future unblocking state is a primary early warning state or a secondary early warning state;
if the future unblocking state is the primary early warning state, starting the vibration loosening device to vibrate and knock the outer wall of the diversion pipeline at the primary early warning point;
And if the future unblocking state is the secondary early warning state, reducing the working power of the concrete conveying pump, and simultaneously starting the vibration loosening device to vibrate and knock the outer wall of the diversion pipeline at the secondary early warning point.
8. A self-compacting concrete high-efficiency diversion system for a gravity dam, comprising a processor and a memory, the processor, when executing computer instructions stored by the memory, performing the method of any one of claims 1 to 7.
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