CN107728492B - Deformable karst cave filling automatic simulation system - Google Patents
Deformable karst cave filling automatic simulation system Download PDFInfo
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- CN107728492B CN107728492B CN201711030624.8A CN201711030624A CN107728492B CN 107728492 B CN107728492 B CN 107728492B CN 201711030624 A CN201711030624 A CN 201711030624A CN 107728492 B CN107728492 B CN 107728492B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
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Abstract
The invention discloses a deformable karst cave filling automatic simulation system, which simulates the karst caves with different shapes by using a single karst cave model unit, realizes the simulation of the actual karst cave by measuring, analyzing, counting and standard curing modes, and can also synthesize the karst cave simulation with various shapes, thereby improving the accuracy of the karst cave in the actual operation, simultaneously saving filling energy properly, monitoring the stress condition in the karst cave in real time and having stronger controllability.
Description
Technical Field
The invention relates to the technical field of karst cave simulation, in particular to a deformable karst cave filling automatic simulation system.
Background
At present, sandy soil and silt surface soil are mainly used underground in coastal areas, adverse geology such as multilayer karst caves, bead-shaped karst caves (including soil caves and the like) and the like are often accompanied under the environment of the underground soil, and if the karst caves are not filled and pretreated, the bearing capacity of the whole bored pile is lost when local slurry leakage, fault and necking occur to the bored pile, so that the design of a cave filling pretreatment construction method has brought forward the research schedule of people.
The karst cave is formed by soluble rock under the action of high water head for a long time, and mainly comprises a filling type and a filling type, the anti-seepage treatment of the karst cave is an important component for ensuring the safe operation of civil engineering, and the treatment measures mainly comprise large excavation backfill and grouting. The grouting has the characteristics of less construction workload, short construction period, easy quality guarantee and the like, and is widely applied to the seepage-proofing reinforcing engineering of the karst foundation at home and abroad. The filling type karst cave anti-seepage grouting stone body is an important component of an engineering anti-seepage system, the structural property of the filling type karst cave anti-seepage grouting stone body is an important parameter required by seepage control engineering design, and an indoor physical model test is an effective way and method for the structural property of the filling type karst cave anti-seepage grouting stone body. For example: the Chinese institute of water conservancy and hydropower science has spontaneously developed a flat-plate grouting test bed; a set of single-crack grouting simulation test system under the condition of dynamic water is developed by Zhan armored yoga and Suihua; the Guo ciphertext and Suihanghua research the seepage diffusion characteristic of grouting slurry under the high-pressure environment condition, and develop a grouting test system capable of forming a high-pressure environment of more than 5 MPa; zhao hong hai, li Lei developed a crack slip casting test device by oneself.
Generally speaking, most of the existing grouting simulation test devices at home and abroad are cracks or non-filled holes and holes, and a filling type karst cave simulation test device is not available. Therefore, the research on the filling type karst cave anti-seepage grouting simulation experiment device under the condition of flowing water is needed by related personnel in the field.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the automatic simulation system for filling the deformable cavern, which can sequentially measure the filling time and the filling quantity of the caverns with various shapes.
The technical scheme adopted by the invention is as follows: the utility model provides a flexible solution cavity fills automatic simulation system, fills watering device, watering and fills metering device, solution cavity filling model and end opening metering device including the solution cavity that connects gradually, wherein: a pressure monitoring system and a monitoring camera are arranged in the karst cave filling model, and the irrigation filling metering device, the bottom port metering device and the bottom port metering device are all connected with a PLC (programmable logic controller) control device; the pressure monitoring system and the monitoring camera are connected to the PLC control device through a plurality of pressure sensors and displacement sensors which are distributed in the karst cave filling model; the PLC control device comprises a display module, an alarm module and a calculation module, wherein the calculation module acquires the pressure value of each pressure sensor, the flow and irrigation inlet pressure of the irrigation filling metering device and the flow and outlet pressure of the bottom opening metering device, and the pressure value and the flow value are displayed on a display screen through the display module; when the pressure values of all pressure sensors and the displacement values of the displacement sensors in the karst cave filling model exceed a preset time interval and are not changed, the alarm module works, and the PLC control device stores the parameters calculated by the calculation module through the storage module and simultaneously switches to the next karst cave shape simulation; when the system is used for simulation, a monitoring camera is used for recording the shape of an original karst cave state, then the shape, the corresponding filling amount and filling time of the shape, and the pressure value of each karst cave are respectively recorded one by one, and finally the filling time and the filling amount of the karst caves in different shapes are respectively compared; the karst cave filling model comprises a cylindrical barrel, a detachable upper cover and a detachable lower bottom, wherein the inner walls of the cylindrical barrel, the detachable upper cover and the detachable lower bottom are uniformly provided with a flexible deformation unit; each flexible deformation unit comprises a flexible wrapping layer and filler filled between the flexible wrapping layer and the inner wall of the cylindrical barrel body or the detachable upper cover or the detachable lower bottom; the outer side of the cylindrical barrel is also provided with a force application sleeve, and the force application sleeve is supported by a support base; the inner wall of the force application sleeve is provided with a sliding rail corresponding to the vertical direction or the horizontal circumferential position of each sliding force application device, and each sliding force application device pushes the flexible deformation unit to deform through a sliding motor and a replaceable telescopic force application rod so as to simulate the filling of karst caves with different shapes; meanwhile, the flexible deformation unit is provided with a plurality of deformation channels corresponding to the cylindrical barrel or the detachable upper cover or the detachable lower bottom respectively, and the deformation channels are used for providing replaceable telescopic force application rods to simulate the deformation of the karst cave; the flexible deformation units of the cylindrical barrel, the detachable upper cover and the detachable lower bottom are also connected with communicated inserting sheet units, and the inserting sheet units are of a plurality of screen plate inserting stroke spherical structures, square structures or conical structures or other irregular structures.
Furthermore, the replaceable telescopic force application rod faces to the direction of the flexible wrapping layer and is in one or combination of a plurality of pear-shaped, strawberry-shaped, mango-shaped, banana-shaped, snail-shaped, tortoise-shaped and holding-down vertical head-shaped structures.
Furthermore, the PLC control device is also provided with a data exchange structure, so that the simulation data in the PLC control device is completely transmitted out for further analysis or is solidified and packaged for use.
Compared with the prior art, the invention has the beneficial effects that: the deformable automatic simulation system for karst cave filling is characterized in that a force application sleeve is sleeved on the periphery of a karst cave filling model, and an irrigation filling metering device and a bottom port metering device are respectively arranged at a pouring port and a bottom port of the karst cave filling model to perform simulation filling on a single karst cave. Meanwhile, when simulation filling is carried out, the initial shape of the karst cave and the filled shape are shot by the monitoring camera to be a picture for assisting positioning and simultaneous analysis of the displacement sensor, so that the analysis accuracy is high, the simulation effect is good, and the actual use condition of the karst cave is more appropriate.
The karst cave filling model comprises a cylindrical barrel, a detachable upper cover and a detachable lower bottom, wherein the inner walls of the cylindrical barrel, the detachable upper cover and the detachable lower bottom are provided with a flexible deformation unit; still be connected with the inserted sheet unit of UNICOM between the flexible deformation unit of cylindrical barrel, removable upper cover and removable lower bottom, the inserted sheet unit is a plurality of otter board grafting stroke spherical structure, square structure or toper structure or other anomalous structures, can the shape of each different solution cavity of automatic simulation to acquire these solution cavity shapes, be convenient for later analysis and data acquisition.
In conclusion, the deformable automatic simulation system for karst cave filling simulates the karst caves with different shapes by using a single karst cave model unit, realizes the simulation of the actual karst cave through the modes of measurement, analysis, statistics and standard solidification, and can also synthesize the karst cave simulation with various shapes, thereby improving the accuracy of the karst cave in the actual operation, simultaneously saving the filling energy properly, monitoring the stress condition in the karst cave in real time and having stronger controllability.
Drawings
FIG. 1 is a schematic structural diagram of an automatic simulation system for filling a deformable karst cave;
FIG. 2 is a schematic diagram of a deformable cave filling automatic simulation system;
wherein: 1-a karst cave filling and irrigating device, 2-an irrigating and filling metering device, 3-a karst cave filling model, 31-a cylindrical barrel, 32-a detachable upper cover and 33-a detachable lower bottom; 4-a bottom port metering device, 5-a pressure monitoring system, 51-a pressure sensor and 52-a displacement sensor; 6-a PLC control device, 7-a force application sleeve, 8-a support base, 9-a force application device, 91-a sliding motor and 92-a replaceable telescopic force application rod; 10-sliding rail, 11-flexible deformation unit, 111-flexible wrapping layer, and 112-filler; 12-deformation channel, 13-plug-in unit, 14-monitoring camera.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples, which are only for the purpose of explaining the present invention and do not limit the scope of the present invention.
Example 1
A deformable karst cave filling automatic simulation system comprises a karst cave filling and irrigating device 1, an irrigating filling metering device 2, a karst cave filling model 3 and a bottom opening metering device 4 which are connected in sequence, as shown in figure 1, wherein: a pressure monitoring system 5 and a monitoring camera 14 are arranged in the karst cave filling model 3, and the irrigation filling metering device 2, the bottom opening metering device 4 and the bottom opening metering device 4 are all connected with a PLC (programmable logic controller) 6;
the pressure monitoring system 5 and the monitoring camera 14 are connected to the PLC control device 6 through a plurality of pressure sensors 51 and displacement sensors 52 distributed in the karst cave filling model 3; the PLC control device 6 comprises a display module, an alarm module and a calculation module, wherein the calculation module acquires the pressure value of each pressure sensor, the flow and irrigation inlet pressure of the irrigation filling metering device and the flow and outlet pressure of the bottom opening metering device, and the pressure value and the flow value are displayed on a display screen through the display module; when the pressure values of all pressure sensors and the displacement values of the displacement sensors in the karst cave filling model exceed a preset time interval and are not changed, the alarm module works, and the PLC control device 6 stores the parameters calculated by the calculation module through the storage module and switches to the next karst cave shape simulation; when the system is used for simulation, a monitoring camera is used for recording the shape of an original karst cave state, then the shape, the corresponding filling amount and filling time of the shape, and the pressure value of each karst cave are respectively recorded one by one, and finally the filling time and the filling amount of the karst caves in different shapes are respectively compared; the cavern filling model 3 comprises a cylindrical barrel 31, a detachable upper cover 32 and a detachable lower bottom 33.
The inner walls of the cylindrical barrel 31, the detachable upper cover 32 and the detachable lower bottom 33 are all provided with a flexible deformation unit 11; communicated inserting sheet units 13 are further connected among the flexible deformation units 11 of the cylindrical barrel 31, the detachable upper cover 32 and the detachable lower bottom 33, and the inserting sheet units 13 are of a plurality of net plate inserting stroke spherical structures, square structures or conical structures or other irregular structures.
In the above embodiment, each flexible deformation unit 11 includes the flexible wrapping layer 111 and the filler 112 filled between the flexible wrapping layer and the inner wall of the cylindrical barrel 31 or the detachable upper cover 32 or the detachable lower base 33; these fillers have a certain deformability which ensures that the flexible wrapping layer is deformed to a certain extent under the push of the replaceable telescopic force application rod 92. The outer side of the cylindrical barrel 31 is also provided with a force application sleeve 7, and the force application sleeve 7 is supported by a support base 8; and the inner wall of the force application sleeve 7 is also provided with a sliding force application device 9, the inner wall of the force application sleeve 7 is provided with a sliding rail 10 corresponding to the vertical direction or the horizontal circumferential position of each sliding force application device 9, and each sliding force application device 9 pushes the flexible deformation unit 11 to deform through a sliding motor 91 and a replaceable telescopic force application rod 92, so that karst cave filling in different shapes is simulated.
Meanwhile, the flexible deformation unit 11 is provided with a plurality of deformation channels 12 corresponding to the cylindrical barrel 31 or the detachable upper cover 32 or the detachable lower bottom 33 respectively, and the deformation channels 12 are used for supplying the replaceable telescopic force application rod 92 to simulate the deformation of the karst cave.
In the above embodiment, the shape of the replaceable telescopic force application rod 92 facing the flexible wrapping layer 111 is one or a combination of several of pear-shaped, strawberry-shaped, mango-shaped, banana-shaped, snail-shaped, tortoise-shaped and clenched vertical head-shaped structures, and finally, the karst cave with various irregular shapes can be simulated.
In the above embodiment, the PLC control device 6 is further provided with a data exchange structure, so as to completely transmit the simulation data therein for further analysis, or to be cured and packaged for use.
Example 2
The polymorphic karst cave filling simulation method comprises the following steps:
A. establishing a karst cave model capable of deforming at will, arranging a related filler injection port and a bottom water port on the karst cave model, and then connecting a karst cave irrigation port metering device and a bottom port metering device;
B. arranging a karst cave simulation model, arranging a pressure monitoring system and an internal shape monitoring system in the karst cave simulation model, and placing a pressure sensor and a displacement sensor at a related inflection point and a pressure point of the karst cave, wherein the inflection point refers to a position with an inflection angle less than 30 degrees in the karst cave, and the pressure point can be a position with concentrated internal stress of the karst cave, and the pressure sensors are connected with a PLC (programmable logic controller); during specific operation, the inflection point and the pressure point can be arranged at the same position, so that the control and the placement are convenient;
C. establishing simulation software monitoring, embedding simulation software in a PLC (programmable logic controller) control device, acquiring the shape of each karst cave state by the simulation software through a monitoring camera of a monitoring system, recording the shape, the corresponding filling amount and filling time of the shape and the pressure value of each karst cave one by one, and finally comparing the filling time and the filling amount of the karst caves in different shapes; meanwhile, a display module of the simulation software displays a pressure value transformation curve and a displacement transformation curve of each sensor;
D. and C, according to the simulation result of the step C, establishing a basic karst cave filling flow data table by simulation software, importing the karst cave filling time and the total amount of fillers of various basic shapes stored in the PLC control device into the actual karst cave as basic data in the actual karst cave filling construction process, and supplying the filler flow of the actual karst cave to the PLC control device according to the filling time and the filling amount of the karst cave.
As shown in figure 2, the polymorphic cavern filling simulation method of the invention firstly adopts a cavern unit capable of polymorphic deformation to automatically simulate the cavern form, and then analyzes the simulated numerical values into standard parameters to be transmitted into a control system for actual cavern filling, and the data standards are embedded into a PLC (programmable logic controller) control device for actual cavern filling, so that the cavern filling is conveniently controlled, the filling efficiency is improved, and different data standards can be simulated according to the specific geological conditions of the cavern, thereby meeting the filling requirements of different geological caverns.
In addition, specifically, when the karst cave simulation system works, different fillers can be filled in the karst cave model to simulate different karst cave geology, and the fillers are generally substances with certain flexible deformation such as water, cement, asphalt and the like.
In the above embodiment, when the simulation software builds each basic cavern shape database, the stable pressure point value of each pressure sensor is measured, and the displacement change value of the cavern point is recorded.
Comprehensively, the deformable automatic simulation system for karst cave filling simulates the karst caves with different shapes by using a single karst cave model unit, realizes the simulation of the actual karst cave through the modes of measurement, analysis, statistics and standard solidification, and can also synthesize the karst cave simulation with various shapes, thereby improving the accuracy of the karst cave in the actual operation, simultaneously properly saving filling energy, monitoring the stress condition in the karst cave in real time and having stronger controllability.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (3)
1. The utility model provides a flexible solution cavity fills automatic simulation system which characterized in that fills watering device (1), watering and fills metering device (2), solution cavity filling model (3) and end opening metering device (4) including the solution cavity that connects gradually, wherein: a pressure monitoring system (5) and a monitoring camera (14) are arranged in the karst cave filling model (3), and the irrigation filling metering device (2), the bottom opening metering device (4) and the bottom opening metering device (4) are all connected with a PLC (programmable logic controller) control device (6);
the pressure monitoring system (5) and the monitoring camera (14) are connected to the PLC control device (6) through a plurality of pressure sensors (51) and displacement sensors (52) distributed in the karst cave filling model (3); the PLC control device (6) comprises a display module, an alarm module and a calculation module, wherein the calculation module acquires the pressure values of the pressure sensors, the flow and irrigation inlet pressure of the irrigation filling metering device and the flow and outlet pressure of the bottom opening metering device, and the pressure values and the flow values are displayed on a display screen through the display module; when the pressure values of all pressure sensors and the displacement values of the displacement sensors in the karst cave filling model exceed a preset time interval and are not changed, the alarm module works, and the PLC control device (6) stores the parameters calculated by the calculation module through the storage module and switches to the next karst cave shape simulation; when the system is used for simulation, a monitoring camera is used for recording the shape of an original karst cave state, then the shape, the corresponding filling amount and filling time of the shape, and the pressure value of each karst cave are respectively recorded one by one, and finally the filling time and the filling amount of the karst caves in different shapes are respectively compared;
the cave filling model (3) comprises a cylindrical barrel body (31), a detachable upper cover (32) and a detachable lower bottom (33), wherein the inner walls of the cylindrical barrel body (31), the detachable upper cover (32) and the detachable lower bottom (33) are respectively provided with a flexible deformation unit (11);
each flexible deformation unit (11) comprises a flexible wrapping layer (111) and filler (112) filled between the flexible wrapping layer and the inner wall of the cylindrical barrel body (31) or the detachable upper cover (32) or the detachable lower base (33);
the outer side of the cylindrical barrel (31) is also provided with a force application sleeve (7), and the force application sleeve (7) is supported by a support base (8); the inner wall of the force application sleeve (7) is provided with a sliding rail (10) corresponding to the vertical direction or the horizontal circumferential position of each sliding force application device (9), and each sliding force application device (9) pushes the flexible deformation unit (11) to deform through a sliding motor (91) and a replaceable telescopic force application rod (92), so that karst cave filling in different shapes is simulated;
meanwhile, the flexible deformation unit (11) is provided with a plurality of deformation channels (12) corresponding to the cylindrical barrel body (31) or the detachable upper cover (32) or the detachable lower bottom (33), and the deformation channels (12) supply replaceable telescopic force application rods (92) to simulate karst cave deformation;
communicated inserting sheet units (13) are further connected among the flexible deformation units (11) of the cylindrical barrel body (31), the detachable upper cover (32) and the detachable lower bottom (33), and the inserting sheet units (13) are of a plurality of net plate inserting stroke spherical structures, square structures or conical structures or other irregular structures.
2. A transfigurable cavern filling automatic simulation system as claimed in claim 1, wherein the shape of the replaceable telescopic force application rod (92) towards the flexible wrapping layer (111) is one or a combination of pear-shaped, strawberry-shaped, mango-shaped, banana-shaped, snail-shaped, tortoise-shaped and clenched vertical head-shaped structures.
3. A transfigurable cavern filling automatic simulation system as claimed in claim 1, wherein the PLC control device (6) is further provided with a data exchange structure, so as to completely transmit the simulation data therein for further analysis, or solidification and encapsulation.
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| CN109162709B (en) * | 2018-09-05 | 2020-12-25 | 中国石油大学(北京) | Preparation method and application of physical simulation sample of hole type carbonate reservoir |
| CN113376354A (en) * | 2020-02-25 | 2021-09-10 | 中国石油化工股份有限公司 | Method for simulating karst caves in different filling states and physical simulation test system |
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