CN108241049B - Simulation monitoring system for multi-cause ground collapse condition and using method thereof - Google Patents
Simulation monitoring system for multi-cause ground collapse condition and using method thereof Download PDFInfo
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- CN108241049B CN108241049B CN201711472274.0A CN201711472274A CN108241049B CN 108241049 B CN108241049 B CN 108241049B CN 201711472274 A CN201711472274 A CN 201711472274A CN 108241049 B CN108241049 B CN 108241049B
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Abstract
The invention relates to a multi-cause ground collapse simulation monitoring system and a using method thereof, wherein the simulation monitoring system comprises a soil container, a base with a concave clamping groove, a monitoring unit fixing frame, a demodulator, a data line and a computer for controlling data processing and operation of the simulation monitoring system, wherein: the soil container is arranged in the concave clamping groove of the base and comprises a shape-variable gas box, a metal pore plate, a gas guide pipe, a vibrator of a gas power source, a pressurization/negative pressure dual-purpose gas pump, a scale used for acquiring the thickness of a soil layer in the soil container and a fixing rod; the upper part of the monitoring unit fixing frame is provided with three monitoring units; and a miniature synthetic aperture radar, an optical sensor and four distance sensors are arranged in the monitoring unit. The invention can simply, conveniently and accurately simulate the soil body collapse condition indoors and carry out real-time monitoring.
Description
The invention belongs to the technical field of engineering geology, and particularly relates to a simulation monitoring system for a multi-factor ground collapse condition and a using method thereof.
Background
The existing ground deformation monitoring technology can be divided into a large-range monitoring technology and a small-range monitoring technology according to a monitoring range. Large-scale monitoring techniques typically employ synthetic aperture interferometric radar (INSAR), Global Positioning System (GPS), and leveling, among others. The small-range monitoring technology mainly comprises the traditional leveling, bedrock marking, layered marking and other methods. The monitoring technology of the ground cracks is very limited, and the developed ground cracks to a certain extent are usually monitored by adopting sensors such as a displacement meter, and the monitoring technology can not effectively monitor and early warn the occurrence and development of potential cracks in the soil body. Therefore, the research on soil micro-deformation monitoring technology and apparatus is a hot spot at present, including optical fiber sensing technology and the like. However, how to evaluate the precision and the engineering practicability is still blank at present. Therefore, the rapid research and development of the monitoring system for the simulation conditions of the multi-cause ground collapse, which integrates reliable performance, high automation degree, high observation precision, sufficient data volume, simple and convenient use, controllable cost and the like, is an urgent task in the field of engineering geology.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a simulation monitoring system for the ground collapse condition of multiple causes and a using method thereof.
The invention provides a multi-cause ground collapse condition simulation monitoring system, which is characterized in that: the device comprises a soil container, a base with a concave clamping groove, a monitoring unit fixing frame, a demodulator, a data line and a computer for controlling data processing and operation of the analog monitoring system; wherein: the soil container is arranged in the concave clamping groove of the base and comprises a shape-variable gas box, a metal pore plate, a gas guide pipe, a vibrator of a gas power source, a pressurization/negative pressure dual-purpose gas pump, a scale used for acquiring the thickness of a soil layer in the soil container and a fixing rod; the metal pore plate is arranged on the bottom bulge of the soil container; the vibrator of the gas power source is connected with the soil container through a fixed rod; the pressurization/negative pressure dual-purpose air pump is connected with the shape-variable air box through an air guide pipe; the shape-variable gas box is connected with the soil container through a gas guide pipe; the lower part of the soil container is provided with four booster water pumps; the bottom of the soil container is provided with three negative pressure water pumps and corresponding water pumping pipes, and the water pumping pipes are connected with the soil container; a pressure measuring pipe for acquiring the water level pressure in the soil container is arranged on the outer side surface of the soil container; the monitoring unit fixing frame is fixed in a groove at the top of the soil container, and three monitoring units are arranged at the upper part of the monitoring unit fixing frame; and a miniature synthetic aperture radar, an optical sensor and four distance sensors are arranged in the monitoring unit.
The realization principle of the invention is as follows: because underground caves with different shapes and different scales have different influences in the soil body when collapse occurs, the invention uses the characteristic that the gas box with the variable shape has good flexibility, and can be adjusted according to the actual condition to ensure that the underground caves have different shapes and scales, thereby realizing the simulation of the underground caves with different shapes and different scales, and compared with the prior technical scheme, the underground cave simulation device does not need to be replaced; meanwhile, the simulation of the ground subsidence of different causes can be realized by combining the negative pressure water pump, the pressurization/negative pressure dual-purpose air pump and the vibrator of the gas power source, compared with the prior art scheme, the simulation of the ground subsidence of single cause and multiple causes in one system is realized, and a large amount of time, manpower and material resources are saved. Meanwhile, various high-precision sensors are used, the whole process of ground collapse can be monitored, and accurate data are provided for subsequent evaluation and analysis.
Compared with the prior art, the invention has the remarkable advantages that:
firstly, the simulation monitoring system for the ground collapse conditions with multiple factors provided by the invention realizes the simulation of underground caverns with different scales and different forms by adjusting the form of the gas box with the variable shape, and avoids the defect that the underground cavern simulation device needs to be replaced in the prior art.
The simulation monitoring system for the multi-cause ground collapse condition provided by the invention realizes the simulation of the multi-cause ground collapse condition in one system by changing different combination schemes of the negative pressure water pump, the pressurization/negative pressure dual-purpose air pump and the vibrator of the gas power source, and avoids the defect that the prior art can realize the simulation of the multi-cause ground collapse only by a large number of simulation devices.
Thirdly, the simulation monitoring system for the ground collapse condition with multiple factors provided by the invention utilizes various monitoring sensors to realize the omnibearing and accurate monitoring of the whole process of the ground collapse, greatly improves the precision of the existing monitoring means, and avoids the loss of monitoring data caused by insufficient precision.
The simulation monitoring system for the multi-factor ground collapse condition can simulate the process of the ground collapse indoors, realize the prior prediction of the ground collapse condition and avoid the defect that the scale and the damage of the ground collapse cannot be effectively predicted at present.
Drawings
Fig. 1 is a schematic structural diagram of a simulation monitoring system for a multiple-factor ground collapse condition according to the present invention.
Fig. 2 is a top view of the soil container and base with a concave trough of the present invention.
FIG. 3 is a schematic view of an airway tube of the invention.
Fig. 4 is a bottom view of the monitoring unit holder of the present invention.
Fig. 5 is a schematic view of a metal aperture plate of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
with reference to fig. 1-5, the present invention provides a simulation monitoring system for multi-factor ground collapse condition, which is characterized in that: the device comprises a soil container 18, a base 17 with a concave clamping groove, a monitoring unit fixing frame 16, a demodulator 19, a data line 20 and a computer 21 for controlling data processing and operation of the analog monitoring system; wherein: the soil container 18 is arranged in the concave clamping groove of the base 17, and the soil container 18 comprises a shape-variable gas box 2, a metal pore plate 6, a gas guide pipe 7, a vibrator 8 of a gas power source, a pressurization/negative pressure dual-purpose gas pump 9, a scale 10 for acquiring the thickness of a soil layer in the soil container 18 and a fixing rod 14; the metal pore plate 6 is arranged on a bulge at the bottom of the soil container 18; the vibrator 8 of the gas power source is connected with a soil container 18 through a fixing rod 14; the pressurization/negative pressure dual-purpose air pump 9 is connected with the shape-variable air box 2 through an air duct 7; the shape-variable gas box 2 is connected with a soil container 18 through a gas guide pipe 7; four booster pumps 5 are arranged at the lower part of the soil container 18; the bottom of the soil container 18 is provided with three negative pressure water pumps 4 and corresponding water pumping pipes 15, and the water pumping pipes 15 are connected with the soil container 18; a pressure measuring pipe 3 for acquiring the water level pressure in the soil container 18 is arranged on the outer side surface of the soil container 18; the monitoring unit fixing frame 16 is fixed in a groove at the top of the soil container 18, and three monitoring units 1 are arranged at the upper part of the monitoring unit fixing frame 16; the monitoring unit 1 is internally provided with a miniature synthetic aperture radar 11, an optical sensor 12 and four distance sensors 13.
The invention provides a further preferable scheme of the simulation monitoring system for the multi-factor ground collapse condition, which comprises the following steps:
the metal orifice plate 6, the gas guide pipe 7 and the soil container 18 are all made of stainless steel.
The monitoring unit fixing frame 16 is of a frame structure and made of stainless steel.
The shape-variable gas box 2 is made of a high-molecular synthetic resin with good elasticity, and the expansion ratio of the shape-variable gas box is 40 times of the volume of the shape-variable gas box when the shape-variable gas box is not inflated.
The vibrator 8 of the gas power source has good sealing performance, and the used gas is nitrogen.
The negative pressure water pump 4 has 2 different negative pressure rates which are respectively 1.5cm3S and 30cm3/s。
The piezometric tube 3 is made of organic glass and has the same height as the soil container 18.
The invention provides a using method of a multi-cause ground collapse condition simulation monitoring system, which is characterized by comprising the following specific steps of:
and 4, simulating signal connection and correction of the monitoring system: the data line 20 is adopted to respectively connect the monitoring unit 1, the negative pressure water pump 4, the booster water pump 5, the vibrator 8 of the gas power source and the booster/negative pressure dual-purpose air pump 9 with the demodulator 19 in a signal way, and the demodulator 19 is connected with the computer 21 in a signal way through the data line 20; correcting the analog monitoring system;
The following further discloses a specific embodiment of the invention according to the simulation monitoring system for the multi-factor ground collapse condition and the use method thereof.
Example 1. Taking the simulation of the ground collapse condition under the earthquake working condition as an example, the concrete implementation steps are as follows:
and 4, simulating signal connection and correction of the monitoring system: the data line 20 is adopted to respectively connect the monitoring unit 1, the negative pressure water pump 4, the booster water pump 5, the vibrator 8 of the gas power source and the booster/negative pressure dual-purpose air pump 9 with the demodulator 19 in a signal way, and the demodulator 19 is connected with the computer 21 in a signal way through the data line 20; correcting the analog monitoring system;
Example 2. Taking the simulation of the ground collapse condition under the groundwater sudden change working condition as an example, the concrete implementation steps are as follows:
and 4, simulating signal connection and correction of the monitoring system: the data line 20 is adopted to respectively connect the monitoring unit 1, the negative pressure water pump 4, the booster water pump 5, the vibrator 8 of the gas power source and the booster/negative pressure dual-purpose air pump 9 with the demodulator 19 in a signal way, and the demodulator 19 is connected with the computer 21 in a signal way through the data line 20; correcting the analog monitoring system;
Example 3. Taking the simulation of the ground collapse condition under the complex working condition as an example, the concrete implementation steps are as follows:
and 4, simulating signal connection and correction of the monitoring system: the data line 20 is adopted to respectively connect the monitoring unit 1, the negative pressure water pump 4, the booster water pump 5, the vibrator 8 of the gas power source and the booster/negative pressure dual-purpose air pump 9 with the demodulator 19 in a signal way, and the demodulator 19 is connected with the computer 21 in a signal way through the data line 20; correcting the analog monitoring system;
The data acquired by the invention can be provided for relevant evaluation by an existing evaluation system in the field.
The embodiments of the present invention are described in detail with reference to the prior art, and the description thereof is not limited thereto.
The invention obtains satisfactory trial effect through repeated test verification.
The above embodiments and examples are specific supports for the technical ideas of the simulation monitoring system for multiple-factor ground collapse condition and the method for using the same proposed by the present invention, and therefore the protection scope of the present invention cannot be limited by the above embodiments and examples, and any equivalent changes or equivalent changes made on the basis of the technical scheme according to the technical ideas proposed by the present invention still belong to the protection scope of the technical scheme of the present invention.
Claims (5)
1. A simulation monitoring system of many reasons ground situation of collapsing which characterized in that: the device comprises a soil container (18), a base (17) with a concave clamping groove, a monitoring unit fixing frame (16), a demodulator (19), a data line (20) and a computer (21) for controlling data processing and operation of the analog monitoring system; wherein: the soil container (18) is arranged in the concave clamping groove of the base (17), and the soil container (18) comprises a shape-variable gas box (2), a metal pore plate (6), a gas guide pipe (7), a vibrator (8) of a gas power source, a pressurization/negative pressure dual-purpose gas pump (9), a scale (10) for acquiring the thickness of a soil layer in the soil container (18) and a fixing rod (14); the metal pore plate (6) is arranged on a bulge at the bottom of the soil container (18); the vibrator (8) of the gas power source is connected with the soil container (18) through a fixing rod (14); the pressurization/negative pressure dual-purpose air pump (9) is connected with the shape-variable air box (2) through an air duct (7); the shape-variable gas box (2) is connected with the soil container (18) through a gas guide pipe (7); the lower part of the soil container (18) is provided with four booster water pumps (5); the bottom of the soil container (18) is provided with three negative pressure water pumps (4) and corresponding water pumping pipes (15), and the water pumping pipes (15) are connected with the soil container (18); a piezometer tube (3) for acquiring the water level pressure in the soil container (18) is arranged on the outer side surface of the soil container (18); the monitoring unit fixing frame (16) is fixed in a groove at the top of the soil container (18), and three monitoring units (1) are arranged at the upper part of the monitoring unit fixing frame (16); the monitoring unit (1) is internally provided with a miniature synthetic aperture radar (11), an optical sensor (12) and four distance sensors (13).
2. The system for the simulated monitoring of the collapse condition of a multi-factor ground according to claim 1, wherein: the monitoring unit (1), the negative pressure water pump (4), the booster water pump (5), the vibrator (8) of the gas power source and the booster/negative pressure dual-purpose air pump (9) are in signal connection with the demodulator (19) through data lines (20).
3. The system for the simulated monitoring of the collapse condition of a multi-factor ground according to claim 1, wherein: the demodulator (19) is connected to a computer (21) via a data line (20) in a signal-transmitting manner.
4. A method of using a simulated monitoring system of a multiple cause ground collapse condition according to any of claims 1-3 wherein: the method comprises the following specific steps:
step 1, arranging a soil container: firstly, the base (17) is placed on an indoor flat ground, and then the soil container (18) is arranged in the concave clamping groove of the base (17) for fixing; then arranging the metal pore plate (6) in a soil container (18); finally, the pressurization/negative pressure dual-purpose air pump (9) is connected with the shape-variable air box (2) through an air duct (7); the shape-variable gas box (2) is connected with the soil container (18) through a gas guide pipe (7);
step 2, filling of a soil sample: according to the soil stratification on the spot, corresponding soil is evenly put into the soil container (18) until the filling of the soil sample is completed;
step 3, setting a monitoring unit: fixing the monitoring unit (1) on a fixing frame (11), and arranging the fixing frame (16) of the monitoring unit in a groove at the upper part of a soil container (18) for fixing;
and 4, signal connection and correction of the monitoring system: the data line (20) is adopted to respectively connect the monitoring unit (1), the negative pressure water pump (4), the booster water pump (5), the vibrator (8) of the gas power source and the booster/negative pressure dual-purpose air pump (9) with the demodulator (19) in a signal way, and the demodulator (19) is connected with the computer (21) in a signal way through the data line (20); correcting the monitoring system;
step 5, monitoring and data acquisition: monitoring and data acquisition are carried out by utilizing the monitoring unit (1); controlling a booster water pump (5) through the computer (21) to adjust the water level in the soil container (18) to a required water level; and the computer (21) is used for controlling the combination scheme of the negative pressure water pump (4), the booster water pump (5), the dual-purpose booster/negative pressure air pump (9) and the vibrator (8) of the gas power source to perform simulation monitoring on the condition of the multi-cause ground collapse.
5. The use method of the multi-factor ground collapse condition simulation monitoring system according to claim 4, wherein: the combination scheme of the negative pressure water pump (4), the pressurization/negative pressure dual-purpose air pump (9) and the vibrator (8) of the gas power source in the step 5 is as follows: A. a pressurization/negative pressure dual-purpose air pump (9); or B, a vibrator (8) of a gas power source and a pressurization/negative pressure dual-purpose air pump (9); or C, a negative pressure water pump (4) and a pressurization/negative pressure dual-purpose air pump (9); or D, a negative pressure water pump (4), a pressurization/negative pressure dual-purpose air pump (9) and a vibrator (8) of the gas power source.
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| CN103575198B (en) * | 2013-09-06 | 2016-02-10 | 南京大学 | A kind of ground deformation air bag simulation method |
| CN103645297B (en) * | 2013-12-13 | 2015-11-11 | 中国神华能源股份有限公司 | The analogue means of karst collapse |
| CN103983755B (en) * | 2014-05-29 | 2015-07-08 | 中国地质科学院岩溶地质研究所 | Simulation test system in variable load fiber strain karst collapse process |
| CN104818983B (en) * | 2015-05-08 | 2017-06-30 | 山东大学 | Physical model experiment system and method that oil reservoir solution cavity collapses with crack closure process |
| CN105089657B (en) * | 2015-06-15 | 2018-05-04 | 中国石油天然气股份有限公司 | The physical simulating method and experimental provision of fracture-cavity type carbonate reservoir hydrocarbons filling |
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