CN112197815A - Gypsum ore collapse monitoring system and construction method - Google Patents
Gypsum ore collapse monitoring system and construction method Download PDFInfo
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- CN112197815A CN112197815A CN202011176057.9A CN202011176057A CN112197815A CN 112197815 A CN112197815 A CN 112197815A CN 202011176057 A CN202011176057 A CN 202011176057A CN 112197815 A CN112197815 A CN 112197815A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
Abstract
The invention discloses a gypsum mine collapse monitoring system and a construction method thereof, wherein the gypsum mine collapse monitoring system comprises a drilling hole, a monitoring sensor, demodulation equipment, a monitoring platform and a buzzer; a plurality of drill holes are independently arranged at each monitoring position of the goaf; the monitoring sensor is arranged in a drill hole; the demodulation equipment is arranged in a safety area; the demodulation equipment is connected with the monitoring sensor and uploads monitoring data to monitoring software of the monitoring platform so as to send out pre-judgment alarm; the buzzer is arranged at the surface position of the monitoring point and connected with the demodulation equipment; the monitoring sensor comprises a fiber grating displacement meter, a fiber grating osmometer, a geological disaster alarm and a geophone; the buzzer sends out a site alarm according to the signal of the geological disaster alarm; the monitoring sensor monitors multiple parameters of the geology of the goaf, the data acquisition is comprehensive, the omnibearing monitoring is realized, meanwhile, the pre-judgment alarm and the field alarm can help operators to quickly make timely measures aiming at dangerous geological conditions.
Description
Technical Field
The invention relates to the technical field of gypsum ore collapse monitoring, in particular to a gypsum ore collapse monitoring system and a construction method thereof.
Background
Gypsum is a widely used industrial and building raw material, mostly exists underground, and the Chinese gypsum mine resource is very abundant and widely distributed, and the total storage capacity is 576 hundred million tons, which is the first place in the world. With the advance of urbanization in China, the building industry and the decoration industry develop rapidly, wide development space is provided for the gypsum industry, and the market capacity is expanded continuously. The large-scale mining of gypsum mine brings economic benefit and leaves serious hidden danger of mining empty ground surface collapse. Therefore, the monitoring work of the gypsum mine goaf is of great practical significance.
The conventional goaf soil deformation monitoring adopts methods such as a theodolite, a level gauge, a steel ruler, a ranging ruler and a total station or a GPS, the real-time performance of the methods is poor, the existing phenomenon that the earth surface is collapsed is monitored, the goaf monitoring requirements of advanced prediction, long-term and real-time online are difficult to meet, and therefore the goaf stability change rule and the development trend thereof cannot be evaluated and predicted according to the deformation and movement of a goaf collapse area, so that the purpose of preventing and treating goaf collapse disasters is achieved.
Disclosure of Invention
The invention mainly solves the technical problems that: the gypsum mine collapse monitoring system and the building method thereof can be used for monitoring the stability for a long time and giving out pre-judgment alarm and site alarm.
In order to solve the main technical problems, the following technical scheme is adopted:
a gypsum mine collapse monitoring system comprises a drilling hole, a monitoring sensor, demodulation equipment, a monitoring platform and a buzzer; the plurality of drill holes are independently arranged at each monitoring position of the goaf; the monitoring sensor is arranged in a drill hole; the demodulation equipment is arranged in the safety area and corresponds to the drill holes one by one; the demodulation devices are correspondingly connected with the monitoring sensors through jumper wires, and monitoring data of each monitoring point are uploaded to monitoring software of the monitoring platform, so that comparison and analysis can be conveniently carried out, and independent pre-judgment alarm of each monitoring point is sent out; the buzzers are arranged on the ground surface of the monitoring point and are connected with the demodulation equipment in a one-to-one correspondence manner; the monitoring sensor comprises a fiber grating displacement meter, a fiber grating osmometer, a geological disaster alarm and a geophone; the fiber bragg grating displacement meters are connected in series along the axial direction of the drill hole and form a U-shaped loop structure; the geophones are connected in parallel and distributed in the drill hole in a staggered manner; the buzzer can send out on-site alarm according to the signal transmitted to the demodulation equipment by the geological disaster alarm.
Preferably, a balancing weight is sunk at the bottom of the drilling hole; and the balancing weight is fixedly connected with the bottom optical fiber cables of the fiber bragg grating displacement meter, the fiber bragg grating osmometer, the geological disaster alarm and the geophone.
Preferably, the demodulation device is powered by a solar power supply system.
Preferably, the U-shaped loop structure comprises two in parallel.
Preferably, the monitoring sensor further comprises a fiber grating thermometer for temperature compensation of the fiber grating osmometer; the depth of the drill hole where the fiber grating thermometer and the fiber grating osmometer are located is consistent.
Preferably, a wireless transmission module is arranged in the demodulation device.
Preferably, the pre-judgment alarm comprises a vertical settlement alarm, an underground water level alarm and a ground collapse vibration alarm.
A method for building a gypsum mine collapse monitoring system comprises the following steps:
s1, drilling a drill hole according to each monitoring position predetermined at the periphery of the gypsum mine goaf, wherein the depth of the drill hole is 1m higher than that of the bedrock; arranging demodulation equipment corresponding to the drill holes one by one in a safety region near the drill hole, and arranging buzzers corresponding to the drill holes one by one in a goaf near the drill hole;
s2: selecting a balancing weight with proper weight and material, and ensuring that the balancing weight is matched with the inner diameter of the drilled hole; a plurality of fiber bragg grating displacement meters are connected in series and welded into a U-shaped loop structure, and the lowest position of the U-shaped loop structure is fixed on the top surface of the balancing weight; wrapping the fiber grating osmometer with gauze and then fixedly connecting the fiber grating osmometer with a balancing weight; fixedly connecting the geophone and the geological disaster alarm with a balancing weight;
s3: the balancing weight provided with the monitoring sensor is lowered to the end face of the bottom of the drilled hole, and the self level stability of the balancing weight is guaranteed;
s4: keeping the optical fiber cables where the fiber grating displacement meter, the fiber grating osmometer, the geological disaster alarm and the geophone are vertically in a tight state, backfilling fine sand around the gypsum mine into the drilled hole, and ensuring the backfilling compactness of the drilled hole;
s5: connecting the light grating extending out of the drilled hole at the top of the monitoring sensor with demodulation equipment through a jumper, and burying the ground surface of the light grating extending out of the drilled hole;
s6: electrically connecting the demodulation equipment with a solar power supply system; connecting the demodulation equipment with the buzzer through a jumper wire, and burying the ground surface of the jumper wire;
s7: starting monitoring, and taking an effective initial monitoring value as a monitoring reference; in subsequent continuous monitoring, the initial monitoring value is used as a reference for analysis; the monitoring platform displays the analyzed monitoring attempts, data and the like and sends out pre-judgment alarm in time.
Preferably, in the S3 step, the monitoring sensor includes a fiber grating thermometer; the depth of the drilled hole where the fiber grating thermometer is located is consistent with the depth of the drilled hole where the fiber grating osmometer is located; the bottom of the fiber grating where the fiber grating thermometer is located is connected with the balancing weight, and the fiber grating with the top extending out of the drill hole is welded with the demodulation equipment.
Compared with the prior art, the monitoring method applied to the collapse of the gypsum mine has the following advantages:
monitoring based on the optical fiber sensing technology has the advantages of low cost, high precision, interference resistance and corrosion resistance; meanwhile, by means of the fiber grating displacement meter, the fiber grating osmometer and the geophone, multiple parameters such as deformation, water level, pore water pressure, temperature, vibration and the like of the geology of the goaf can be monitored, the data are comprehensively collected, the omnibearing monitoring is realized, the mutual assistance of the data of the whole monitoring and early warning is ensured, meanwhile, the automatic remote online monitoring and the pre-judging warning are carried out, and operators can be helped to quickly make timely response measures aiming at dangerous geological conditions; the geological disaster alarm controls a field buzzer to give an alarm, and can realize the warning effect on the periphery, thereby realizing the high combination of field alarm and prejudgment alarm.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an overall structure provided in an embodiment of the present invention.
In the figure: the device comprises a drilling hole, a demodulation device, a monitoring platform, a fiber grating displacement meter, a fiber grating osmometer, a geological disaster alarm, a seismic detector, a fiber grating thermometer, a solar power supply system, a buzzer, a jumper wire and a balancing weight, wherein the drilling hole is 1, the demodulation device is 2, the monitoring platform is 3, the fiber grating displacement meter is 4, the fiber grating osmometer is 5, the geological disaster alarm is 6, the seismic detector is 7, the fiber grating thermometer is 8, the solar power supply.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.
Referring to fig. 1, a gypsum mine collapse monitoring system includes a borehole 1, a monitoring sensor, a demodulation device 2, a monitoring platform 3, and a buzzer 10.
The plurality of drill holes 1 are independently arranged at each monitoring position of the goaf, and the monitoring positions are selected on the basis of reducing loss; the interval distance between the adjacent drill holes 1 is 500m-1000 m; the monitoring sensors are arranged in a drill hole 1 and are mainly used for monitoring the underground depth of each goaf;
the demodulation equipment 2 is arranged in a safety area and corresponds to the drill holes 1 one by one, the demodulation equipment 2 is provided with a wireless transmission module and a GPS positioning module, demodulated signals can be transmitted into the monitoring platform 3, and in order to enable the demodulation equipment 2 to be more energy-saving and ensure sufficient electric power, the demodulation equipment 2 is connected with a solar power supply system 9; the plurality of demodulation devices 2 are correspondingly connected with the monitoring sensors through the jumper wires 11 and the junction box, namely, one monitoring sensor is arranged in a drill hole 1 and is connected with one demodulation device 2; the demodulation device 2 is internally provided with a fast tunable laser light source module, the central wavelength of the monitoring sensor is monitored by changing the output wavelength of the tunable light source, so that the physical value of each fiber grating sensor is obtained, and then the physical value is transmitted to the monitoring software of the monitoring platform 3 through remote networking; monitoring software of the monitoring platform 3 can perform comparative analysis, data trend viewing, wavelength measurement and the like on data; the monitoring software can also analyze and pre-judge an alarm according to the data trend of each monitoring point, and can judge the central point of collapse to be generated and the range of collapse to be generated according to the real-time online data of each monitoring point; the type of the pre-judging alarm comprises a vertical settlement alarm, an underground water level alarm and a ground subsidence vibration alarm, and is mainly determined according to the signal type of the monitoring sensor.
The monitoring sensors are Bragg fiber grating (FBG) sensors, namely, the FBG sensors are formed by changing the refractive index of a fiber core area to generate small periodic modulation; when the temperature or the stress is changed, the optical fiber generates axial strain, the strain enables the grating period to be enlarged, meanwhile, the radiuses of the core layer and the cladding layer of the optical fiber are reduced, the refractive index of the optical fiber is changed through the photoelastic effect, and therefore the wavelength deviation of the grating is caused; calculating to obtain the strain quantity of the measured structure by utilizing the linear relation between the strain and the wavelength offset of the grating; the wavelength demodulation precision of the FBG reaches 1pm, the corresponding strain test precision is about 1 microstrain, and the temperature demodulation precision is 0.1 ℃; the monitoring sensor comprises a fiber grating displacement meter 4, a fiber grating osmometer 5, a geological disaster alarm 6 and a geophone 7; a plurality of fiber grating displacement meters 4 are axially connected in series along the borehole 1 and form a U-shaped loop structure, so as to avoid that the whole U-shaped loop structure cannot monitor data when one fiber grating displacement meter 4 is damaged, wherein the U-shaped loop structure comprises two fiber grating displacement meters (not shown in the figure) connected in parallel; when the two U-shaped loop structures are in normal working states, the two U-shaped loop structures are corrected mutually to ensure accurate data, and after any one of the two U-shaped loop structures fails, the two U-shaped loop structures are used for standby to ensure normal data; the displacement variation of the rock mass in the specified length range is monitored on line in real time by using the fiber bragg grating displacement meter 4 and a screw guide mark.
The fiber grating osmometer 5 is mainly used for monitoring the underground water level, and the parameter of the fiber grating osmometer 5 is prevented from being changed greatly due to temperature difference; the monitoring sensor also comprises a fiber grating thermometer 8 for carrying out temperature compensation on the fiber grating osmometer 5; the depth of the drilling hole 1 where the fiber grating thermometer 8 and the fiber grating osmometer 5 are located is the same.
The geological disaster alarm 6 is only affected by stratum stretching and the like and is not affected by external conditions such as temperature, water and the like, the geological disaster alarm 6 transmits a signal to the demodulation equipment 2, the demodulation equipment 2 transmits the signal to the buzzer 10, and the buzzer 10 sends a sharp alarm sound so as to alarm on site; meanwhile, in order to distinguish the severity of the geological disaster, the geological disaster alarm 6 can be divided into a plurality of alarm levels, and the buzzer 10 can give out field alarms with different sounds or different intensities; in general, the alarm level is set to three levels, and the three levels can be customized for specific geological conditions.
For convenience of installation, a counterweight block 12 is sunk at the bottom of the drill hole 1, the counterweight block 12 is usually an iron cylinder, and the outer diameter of the counterweight block 12 is matched with the inner diameter of the drill hole 1, namely the counterweight block 12 can sink to the bottom of the drill hole 1 and cannot horizontally shake; the balancing weight 12 is fixedly connected with the fiber grating displacement meter 4, the fiber grating osmometer 5, the geological disaster alarm 6 and the bottom optical fiber cable of the geophone 7, so that the fiber grating displacement meter 4, the fiber grating osmometer 5, the geological disaster alarm 6 and the geophone 7 are always kept in a vertical state in the backfilling process of the drill hole 1.
The invention comprises the following steps: the first step is as follows: drilling a drill hole 1 at each monitoring position according to each monitoring position predetermined at the periphery of a gypsum mine goaf, wherein the depth of the drill hole 1 is 1m higher than that of a bedrock, and the depth of the drill hole 1 is 30m under the common condition; arranging demodulation equipment 2 corresponding to the drill holes 1 one by one in a safe area (non-goaf area) near the drill holes 1, and arranging buzzers 10 corresponding to the drill holes 1 one by one near a goaf (position needing warning action) where the drill holes 1 are located;
the second step is that: selecting a balancing weight 12 with proper balance weight and material, and ensuring that the balancing weight 12 is matched with the inner diameter of the drill hole 1; a plurality of fiber bragg grating displacement meters 4 are connected in series and welded into a U-shaped loop structure, the lowest position of the U-shaped loop structure is fixed on the top surface of the balancing weight 12, and two U-shaped loop structures are arranged to ensure monitoring accuracy; wrapping the fiber grating osmometer 5 with gauze, and then fixedly connecting the wrapped fiber grating osmometer 5 with a balancing weight 12, and determining that the sinking position of the fiber grating osmometer 5 is accurate; fixedly connecting the geophone 7 and the geological disaster alarm 6 with a balancing weight 12 and connecting the geophone and the geological disaster alarm to a collector; the bottom of the fiber grating where the fiber grating thermometer 8 is located is also fixedly connected with a balancing weight 12, and the sinking depth of the fiber grating thermometer 8 is consistent with the sinking depth of the fiber grating osmometer 5;
the third step: the counterweight block 12 provided with the monitoring sensor is lowered to the end face of the bottom of the drill hole 1, and the self level stability of the counterweight block 12 is ensured;
the fourth step: keeping the optical fiber cables where the fiber grating displacement meter 4, the fiber grating osmometer 5, the geological disaster alarm 6, the geophone 7 and the fiber grating thermometer 8 are located in a tight state vertically, backfilling fine sand around the gypsum ore into the drill hole 1, and ensuring the backfill compactness of the drill hole 1;
the fifth step: connecting the optical fiber grating extending out of the drill hole 1 from the top of the monitoring sensor with the demodulation equipment 2 by using a jumper 11, and burying the optical fiber grating extending out of the drill hole 1 on the ground surface;
and a sixth step: electrically connecting the demodulation equipment 2 with a solar power supply system 9; connecting the demodulation equipment 2 with the buzzer 10 through a jumper wire 11, and carrying out ground surface buried laying on the jumper wire 11;
the seventh step: starting monitoring, and taking an effective initial monitoring value as a monitoring reference; in subsequent continuous monitoring, the initial monitoring value is used as a reference for analysis; the monitoring platform 3 displays the analyzed monitoring attempts, data and the like and timely sends out pre-judgment alarm.
It should be noted that the terms "upper, lower, left, right, inner and outer" in the present invention are defined based on the relative positions of the components in the drawings, and are only used for clarity and convenience of the technical solution, and it should be understood that the application of the terms of orientation does not limit the scope of the present application.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a gypsum ore deposit monitoring system that sinks which characterized in that: the device comprises a drilling hole, a monitoring sensor, demodulation equipment, a monitoring platform and a buzzer; the plurality of drill holes are independently arranged at each monitoring position of the goaf; the monitoring sensor is arranged in a drill hole; the demodulation equipment is arranged in the safety area and corresponds to the drill holes one by one; the demodulation devices are correspondingly connected with the monitoring sensors through jumper wires, and monitoring data of each monitoring point are uploaded to monitoring software of the monitoring platform, so that comparison and analysis can be conveniently carried out, and independent pre-judgment alarm of each monitoring point is sent out; the buzzers are arranged on the ground surface of the monitoring point and are connected with the demodulation equipment in a one-to-one correspondence manner; wherein the content of the first and second substances,
the monitoring sensor comprises a fiber bragg grating displacement meter, a fiber bragg grating osmometer, a geological disaster alarm and a geophone; the fiber bragg grating displacement meters are connected in series along the axial direction of the drill hole and form a U-shaped loop structure; the geophones are connected in parallel and distributed in the drill hole in a staggered manner; the buzzer can send out on-site alarm according to the signal transmitted to the demodulation equipment by the geological disaster alarm.
2. The gypsum mine collapse monitoring system of claim 1, wherein: a balancing weight is sunk at the bottom of the drilling hole; and the balancing weight is fixedly connected with the bottom optical fiber cables of the fiber bragg grating displacement meter, the fiber bragg grating osmometer, the geological disaster alarm and the geophone.
3. The gypsum mine collapse monitoring system of claim 1, wherein: the demodulation device is powered by a solar power supply system.
4. The gypsum mine collapse monitoring system of claim 1, wherein: the U-shaped loop structure comprises two parallel circuits.
5. The gypsum mine collapse monitoring system of claim 1, wherein: the monitoring sensor also comprises a fiber grating thermometer for carrying out temperature compensation on the fiber grating osmometer; the depth of the drill hole where the fiber grating thermometer and the fiber grating osmometer are located is consistent.
6. The gypsum mine collapse monitoring system of claim 1, wherein: and a wireless transmission module is arranged in the demodulation equipment.
7. The gypsum mine collapse monitoring system of claim 1, wherein: the pre-judging alarm comprises a vertical settlement alarm, an underground water level alarm and a ground subsidence vibration alarm.
8. A method of constructing a gypsum mine collapse monitoring system according to any one of claims 1 to 7, wherein: comprises the following steps:
s1, drilling a drill hole according to each monitoring position predetermined at the periphery of the gypsum mine goaf, wherein the depth of the drill hole is 1m higher than that of the bedrock; arranging demodulation equipment corresponding to the drill holes one by one in a safety region near the drill hole, and arranging buzzers corresponding to the drill holes one by one in a goaf near the drill hole;
s2: selecting a balancing weight with proper weight and material, and ensuring that the balancing weight is matched with the inner diameter of the drilled hole; a plurality of fiber bragg grating displacement meters are connected in series and welded into a U-shaped loop structure, and the lowest position of the U-shaped loop structure is fixed on the top surface of the balancing weight; wrapping the fiber grating osmometer with gauze and then fixedly connecting the fiber grating osmometer with a balancing weight; fixedly connecting the geophone and the geological disaster alarm with a balancing weight;
s3: the balancing weight provided with the monitoring sensor is lowered to the end face of the bottom of the drilled hole, and the self level stability of the balancing weight is guaranteed;
s4: keeping the optical fiber cables where the fiber grating displacement meter, the fiber grating osmometer, the geological disaster alarm and the geophone are vertically in a tight state, backfilling fine sand around the gypsum mine into the drilled hole, and ensuring the backfilling compactness of the drilled hole;
s5: connecting the light grating extending out of the drilled hole at the top of the monitoring sensor with demodulation equipment through a jumper, and burying the ground surface of the light grating extending out of the drilled hole;
s6: electrically connecting the demodulation equipment with a solar power supply system; connecting the demodulation equipment with the buzzer through a jumper wire, and burying the ground surface of the jumper wire;
s7: starting monitoring, and taking an effective initial monitoring value as a monitoring reference; in subsequent continuous monitoring, the initial monitoring value is used as a reference for analysis; the monitoring platform displays the analyzed monitoring attempts, data and the like and sends out pre-judgment alarm in time.
9. The method for building a gypsum mine collapse monitoring system according to claim 8, wherein: in the step S3, the monitoring sensor includes a fiber grating thermometer; the depth of the drilled hole where the fiber grating thermometer is located is consistent with the depth of the drilled hole where the fiber grating osmometer is located; the bottom of the fiber grating where the fiber grating thermometer is located is connected with the balancing weight, and the fiber grating with the top extending out of the drill hole is welded with the demodulation equipment.
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| CN202011176057.9A CN112197815A (en) | 2020-10-28 | 2020-10-28 | Gypsum ore collapse monitoring system and construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503163A (en) * | 2021-07-22 | 2021-10-15 | 苏州大学 | Monitoring method for construction deformation of shield-driven underground diaphragm wall |
| CN114413838A (en) * | 2022-01-25 | 2022-04-29 | 中煤航测遥感集团有限公司 | Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device |
| CN115308807A (en) * | 2022-07-28 | 2022-11-08 | 安徽省昌昊矿山设计研究有限公司 | Mine goaf collapse safety detection protection equipment and collapse detection method |
-
2020
- 2020-10-28 CN CN202011176057.9A patent/CN112197815A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503163A (en) * | 2021-07-22 | 2021-10-15 | 苏州大学 | Monitoring method for construction deformation of shield-driven underground diaphragm wall |
| CN114413838A (en) * | 2022-01-25 | 2022-04-29 | 中煤航测遥感集团有限公司 | Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device |
| CN115308807A (en) * | 2022-07-28 | 2022-11-08 | 安徽省昌昊矿山设计研究有限公司 | Mine goaf collapse safety detection protection equipment and collapse detection method |
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