CN114413838A - Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device - Google Patents
Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device Download PDFInfo
- Publication number
- CN114413838A CN114413838A CN202210086725.1A CN202210086725A CN114413838A CN 114413838 A CN114413838 A CN 114413838A CN 202210086725 A CN202210086725 A CN 202210086725A CN 114413838 A CN114413838 A CN 114413838A
- Authority
- CN
- China
- Prior art keywords
- monitoring
- stress
- goaf
- collapse
- monitoring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 105
- 238000012806 monitoring device Methods 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 62
- 230000005484 gravity Effects 0.000 claims abstract description 22
- 239000002689 soil Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 21
- 238000005065 mining Methods 0.000 description 11
- 239000003245 coal Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000001727 in vivo Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000004590 computer program Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Abstract
The application provides a monitoring system, monitoring equipment, a monitoring method and a monitoring device for a collapse area of a goaf, and relates to the technical field of geological exploration. The system comprises: the monitoring system comprises a plurality of monitoring points, monitoring equipment and a processor, wherein the monitoring equipment and the processor are arranged on each monitoring point, and each monitoring point is arranged between a maximum collapse area and a minimum collapse area of a goaf; each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors; the gravity device is used for keeping each stress sensor in the horizontal direction; the stress sensor is used for acquiring strain data; each monitoring device is respectively connected with the processor, and the processor is used for receiving the strain data acquired by each stress sensor in each monitoring device and determining the actual collapse area of the goaf according to the strain data and the distance between adjacent stress sensors. By applying the method and the device, the collapse area in the collapse process of the goaf can be accurately monitored.
Description
Technical Field
The application relates to the technical field of geological exploration, in particular to a monitoring system, monitoring equipment, monitoring method and monitoring device for a collapse area of a goaf.
Background
A gob is a "cavity" created below the surface of the earth by artificial excavation or natural geological motion, for example, after underground mining of a coal mine in a coal mining area, a gob is formed in the coal mining area, and collapse of the gob can pose a significant safety problem.
At present, the maximum range and the minimum range of goaf collapse can be determined by combining the rock-soil body fracture angle theory with geological survey data in the coal mining process.
However, goaf collapse is a slow process, and the collapse area in the goaf collapse process cannot be accurately monitored by the prior art method.
Disclosure of Invention
An object of the present application is to provide a monitoring system, a monitoring device, a monitoring method and a monitoring device for a goaf collapse area, which can accurately monitor a collapse area in the goaf collapse process, aiming at the defects in the prior art.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a goaf collapse area monitoring system, where the system includes: the monitoring system comprises a plurality of monitoring points, monitoring equipment and a processor, wherein the monitoring equipment and the processor are arranged on each monitoring point, and each monitoring point is arranged between a maximum collapse area and a minimum collapse area of a goaf;
each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors; the gravity device is used for keeping each stress sensor in a horizontal direction; the stress sensor is used for acquiring strain data;
the processor is used for receiving strain quantity data acquired by the stress sensors in the monitoring devices and determining an actual collapse area of the goaf according to the strain quantity data and the distance between adjacent stress sensors.
Optionally, a recording unit is further disposed on the monitoring device;
the recording unit is connected with the stress chain and is used for recording strain data acquired by each stress sensor on the stress chain;
the recording unit is also connected with the processor and is used for sending the strain quantity data acquired by each stress sensor on the stress chain to the processor.
Optionally, a power supply unit is further arranged on the monitoring device;
the power supply unit is respectively connected with the stress chain and the recording unit and is used for supplying power to each stress sensor and the recording unit which are arranged on the stress chain.
Optionally, each of the monitoring points is a borehole; the monitoring equipment is also provided with a sealing device;
the closing device is arranged at the top end of the drilling hole;
the top end and the bottom end of the sealing device are respectively provided with a through hole, and the stress chain penetrates through the through holes and is vertically arranged in the drill holes.
Optionally, the number of the monitoring points is 3, and each monitoring point forms an equilateral triangle.
In a second aspect, an embodiment of the present application provides a monitoring device, where the monitoring device is the monitoring device in the first aspect.
In a third aspect, an embodiment of the present application further provides a goaf collapse area monitoring method, where the method is applied to the processor in the first aspect, and the method includes:
receiving strain data acquired by each stress sensor in each monitoring device;
and determining an actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors.
Optionally, the determining an actual collapse region of the goaf according to the strain amount data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors includes:
determining a sliding angle of the goaf according to strain data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors;
and determining an actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
Optionally, the receiving strain amount data acquired by each stress sensor in each monitoring device includes:
determining a maximum collapse area and a minimum collapse range of the goaf according to the rock-soil body fracture angle interval;
strain data acquired by each stress sensor in each monitoring device disposed between a maximum collapse region and a minimum collapse region of the gob is received.
In a fourth aspect, an embodiment of the present application further provides a goaf collapse area monitoring device, where the device is applied to the processor in the first aspect, and the device includes:
the receiving module is used for receiving strain data acquired by each stress sensor in each monitoring device;
and the determining module is used for determining the actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors.
Optionally, the determining module is specifically configured to determine a sliding angle of the goaf according to strain amount data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors; and determining an actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
Optionally, the receiving module is specifically configured to determine a maximum collapse area and a minimum collapse range of the goaf according to the rock-soil body fracture angle interval; strain data acquired by each stress sensor in each monitoring device disposed between a maximum collapse region and a minimum collapse region of the gob is received.
In a fifth aspect, an embodiment of the present application provides an electronic device, including: a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, when the electronic device is operated, the processor and the storage medium communicate through the bus, and the processor executes the machine-readable instructions to perform the steps of the goaf collapse area monitoring method according to the third aspect.
In a sixth aspect, the present application provides a storage medium, and the computer program is executed by a processor to perform the steps of the goaf collapse area monitoring method in the third aspect.
The beneficial effect of this application is:
the embodiment of the application provides a monitoring system, monitoring equipment, a method and a device for a collapse area of a goaf, wherein the system comprises the following components: the monitoring system comprises a plurality of monitoring points, monitoring equipment arranged on each monitoring point and a processor, wherein each monitoring point is arranged between the maximum collapse area and the minimum collapse area of the goaf; each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors; the gravity device is used for keeping each stress sensor in a horizontal direction; the stress sensor is used for acquiring strain data; each monitoring device is respectively connected with the processor, and the processor is used for receiving the strain data acquired by each stress sensor in each monitoring device and determining the actual collapse area of the goaf according to the strain data and the distance between adjacent stress sensors.
By adopting the monitoring system for the collapse area of the goaf, the monitoring equipment arranged on each monitoring point is utilized to monitor the actual collapse area of the goaf, specifically, the change condition of the strain data of a plurality of stress sensors in the stress chain arranged on the monitoring equipment in the collapse process of the goaf can be utilized to determine the actual collapse areas of a plurality of layers to be collapsed corresponding to each monitoring equipment, the total actual collapse area of the layers to be collapsed can be calculated by combining the actual collapse areas of the layers to be collapsed at the same depth, and the total actual collapse area is taken as the actual collapse area of the goaf. That is to say, in the collapse process of the goaf, different layers to be collapsed can collapse, and the total actual collapse areas corresponding to a plurality of layers to be collapsed can be determined by using the above mentioned method when the goaf collapses, so that the collapse areas in the collapse process of the goaf can be accurately monitored.
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, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a goaf collapse area monitoring system according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a maximum collapse region and a relationship between a minimum collapse region and each monitoring point of a gob provided in an embodiment of the present application;
fig. 3 is a schematic sectional view of a goaf according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a monitoring device according to an embodiment of the present disclosure;
fig. 5 is a schematic flow chart of a monitoring method for a collapse area of a goaf according to an embodiment of the present disclosure;
fig. 6 is a schematic flow chart of another monitoring method for a collapse area of a goaf according to an embodiment of the present disclosure;
fig. 7 is a schematic flowchart of another monitoring method for a collapse area of a goaf according to an embodiment of the present disclosure;
fig. 8 is a goaf collapse area monitoring device according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Fig. 1 is a schematic structural diagram of a goaf collapse area monitoring system according to an embodiment of the present disclosure. As shown in fig. 1, the system may include a plurality of monitoring points 101, a monitoring device 102 disposed at each monitoring point 101, and a processor 100, wherein each monitoring point 101 is disposed between a maximum collapse zone and a minimum collapse zone of the gob.
Each monitoring device 102 is provided with a stress chain 103 and a gravity device 104, the gravity device 104 is connected with the tail end of the stress chain 103, and the stress chain 103 is provided with a plurality of stress sensors 1031; the gravity device 104 is used for holding each stress sensor 1031 in a horizontal direction; the stress sensor 1031 is used to acquire strain amount data.
Each monitoring device 102 is connected to the processor 100, and the processor 100 is configured to receive strain data obtained by each stress sensor 1031 in each monitoring device 102, and determine an actual collapse area of the goaf according to the strain data and a distance between adjacent stress sensors 1031.
The monitoring devices 102 arranged on the monitoring points 101 may have the same structure, the number of the monitoring devices 102 is the same as that of the monitoring points 101, the monitoring devices 102 having the above described structure may send the detected data to the processor 100 in a wired or wireless communication manner, and the processor 100 may analyze and process the monitoring data of the monitoring devices 102 to obtain an actual collapse area, i.e., an actual collapse range, formed by the goaf at each collapse stage.
The relationship between each monitoring point 101 and the maximum and minimum collapse regions of the gob is first graphically illustrated. Fig. 2 is a schematic diagram of a maximum collapse region and a relationship between a minimum collapse region and each monitoring point of a gob according to an embodiment of the present application. As shown in fig. 2, the number of the monitoring points 101 may be 3, and correspondingly, 3 monitoring devices 102 are required to monitor the goaf collapse area. As can be seen in fig. 3, the maximum collapse region and the minimum collapse region may be approximately circular, and each monitoring point 101 may be disposed between the rings of the maximum collapse region and the minimum collapse region of the gob, which may be predicted in advance in the following manner.
Fig. 3 is a schematic sectional view of a goaf according to an embodiment of the present disclosure, as shown in fig. 3, where coal mining is taken as an example for description, a goaf 301 is a coal mining area, and when mining is performed in the coal mining area, a rock mass on the mining area is damaged along a rock-soil mass fracture angle a, so as to form a collapse area of the goaf 301, where the rock-soil mass fracture angle a may be determined according to the following formula: the method comprises the following steps that A is 45 degrees + rock-soil in-vivo friction angle/2, the rock-soil in-vivo friction angle can be determined according to geological survey data in the coal mining process, specifically, the rock-soil in-vivo friction angle is an interval range, the maximum rock-soil in-vivo friction angle and the minimum rock-soil in-vivo friction angle are substituted into the formula for solving the rock-soil body fracture angle A, and then the large collapse area and the minimum collapse area of a goaf can be determined according to the interval of the rock-soil body fracture angle A.
After the large collapse area and the minimum collapse area of the gob 301 are determined, each monitoring device 102 may be extended from the ground level 302 in fig. 3, and the actual collapse area formed in each collapse phase of the gob 301 is determined by combining the data monitored by each monitoring device 102.
Fig. 4 is a schematic structural diagram of a monitoring device according to an embodiment of the present application. As shown in fig. 4, the monitoring device 102 may be provided with a stress chain 103, the stress chain 103 extends into a borehole 400, the stress chain 103 may include a plurality of stress sensors 1031 and a bus 401, each stress sensor may be denoted by a letter B in fig. 4, each stress sensor 1031 may be connected to the bus 401, wherein the type of the stress sensor 1031 may be a piezomagnetic-inductive stress meter, a capacitive stress meter or a piezomagnetic-inductive meter, in general, the types of the stress sensors 1031 included in the stress chain 103 are the same, the distance between adjacent stress sensors 1031 may be a constant, for example, one stress sensor 1031 may be provided at an interval of 2 meters, and the distance between adjacent stress sensors 1031 on the stress chain 103 is stored in the memory of the processor 100 in advance.
The number of the stress sensors 1031 arranged on the stress chain 103 may be determined according to actual requirements, for example, the number of the stress sensors 1031 arranged on the stress chain 103 may be determined according to the depth and accuracy requirements of the stress chain 103, for example, 4 stress sensors 1031 may be arranged on the stress chain 103 on the monitoring device 102 in fig. 4, which is not limited in this application. The end of the stress chain 103 may be connected to a gravity device 104, i.e. the end of the bus connecting the stress sensors 1031 is connected to the gravity device 104, the gravity device 104 is indicated by the letter G in fig. 4, the purpose of the gravity device 104 is to pull the bus 401 to keep the stress sensors 1031 connected to the bus 401 horizontal, and the specific weight value of the gravity device 104 is not limited in this application. Each stress sensor 1031 can obtain strain data at a corresponding depth under the action of the gravity device 104.
Here, taking an example that 3 monitoring devices 102 (a first monitoring device, a second monitoring device, and a third monitoring device) are used for monitoring a collapse area of a goaf, the depth of the 3 monitoring devices 102 penetrating into the ground can be kept consistent, for example, the stress chain 103 on each monitoring device 102 can penetrate into the ground by 25 meters, and in the process of collapse of the goaf, each monitoring device 102 has a stress sensor 1031 with changed strain data. Generally, when the goaf collapses, the strain data of the stress sensors 1031 on the stress chain 103 sequentially mutate from bottom to top, the area above the goaf can be divided into a plurality of layers to be collapsed according to the depth of the adjacent stress sensors 1031, that is, a layer to be collapsed is arranged between two adjacent stress sensors 1031, and whether the layer to be collapsed below the stress sensors 1031 collapses or not can be judged according to whether the strain data corresponding to the stress sensors 1031 changes or not, or whether the strain data of the stress sensors 1031 is greater than a strain threshold value or not.
The first monitoring device, the second monitoring device, and the third monitoring device may respectively send the strain data acquired by each stress sensor 1031 to the processor 100, where the example of processing and analyzing the strain data of each stress sensor 1031 corresponding to the first monitoring device by the processor 100 is taken as an example for explanation, and the second monitoring device and the third monitoring device are similar. Assuming that 5 stress sensors 1031 are arranged on the stress chain 103 of the first monitoring device, and the distance between adjacent stress sensors 1031 is 2 meters, the processor 100 determines that the stress sensors 1031 at 4 meters and the stress sensors 1031 below 4 meters on the first monitoring device are both larger than the strain threshold according to the received strain data, which indicates that the layers to be collapsed below 4 meters are collapsed.
The collapse areas of the to-be-collapsed layer at 5 meters, the to-be-collapsed layer at 7 meters, and the to-be-collapsed collapse areas of the to-be-collapsed layer at 9 meters can be calculated respectively by the following method, here, the collapse areas of the to-be-collapsed layer at 5 meters are taken as an example for the determination of the collapse areas of the to-be-collapsed layer at 5 meters, the processor 100 calculates the sliding angle 1 of the to-be-collapsed layer at 5 meters according to the strain quantity difference between the strain quantity data corresponding to the stress sensors 1031 at 4 meters, the strain quantity difference between the strain quantity data corresponding to the stress sensors 1031 at 6 meters, and the distance (for example, 2 meters) between the stress sensors 1031, the sliding angle 1 is a result of comparing the strain quantity difference with the distance, the processor 100 can determine the actual collapse areas of the to-collapsed layer in the sliding angle 1 direction according to the sliding angle 1 of the to-collapsed layer, and similarly, the processor 100 can calculate the sliding angle 2 and the collapse areas of the to-collapsed layer according to the strain quantity data acquired by the stress sensors 1031 of the second monitoring device and the third monitoring device And the sliding angle 3 further determines an actual collapse region of the layer to be collapsed in the sliding angle 2 direction and an actual collapse region of the layer to be collapsed in the sliding angle 3 direction respectively according to the sliding angle 2 and the sliding angle 3, and the processor 100 determines a total actual collapse region of the layer to be collapsed by combining the actual collapse regions in the sliding angle 1, the sliding angle 2 and the sliding angle 3 directions. In the same way, the total actual collapse area of other layers to be collapsed, namely the actual collapse area of the goaf can be determined in the collapse process of the goaf.
It should be noted that different layers to be collapsed may correspond to different sliding angles, and the actual collapse areas of the layers to be collapsed may be calculated according to the sliding angles corresponding to the layers to be collapsed, where the sliding angle is equivalent to the rock-soil body fracture angle a mentioned above, and the sliding angle is determined according to actually acquired data when the goaf collapses, so as to avoid approximately determining the collapse areas of the goaf according to data in geological survey data, improve the accuracy of determining the collapse areas of the goaf, and thus, residents and facilities in the collapse areas of the goaf can be effectively avoided.
To sum up, among the collecting space area monitoring system that collapses that this application provided, utilize the monitoring facilities who sets up on each monitoring point to monitor the actual area that collapses of this collecting space area, it is specific, utilize the change condition of the dependent variable data of a plurality of stress sensors in the stress chain of setting on monitoring facilities in the collapse in-process of this collecting space area, can confirm a plurality of actual areas that collapse of treating the layer that each monitoring facilities corresponds, the area that should collapse is totally actually collapsed in the actual area that should treat the layer that collapses in combination with treating the collapse of the same degree of depth, the area that should totally actually collapse is as the actual area that collapses of this collecting space area. That is to say, in the collapse process of the goaf, different layers to be collapsed can collapse, and the total actual collapse areas corresponding to a plurality of layers to be collapsed can be determined by using the above mentioned method when the goaf collapses, so that the collapse areas in the collapse process of the goaf can be accurately monitored.
Optionally, the monitoring device 102 is further provided with a recording unit 402, and the recording unit 402 is connected to the stress chain 103 and is configured to record strain amount data obtained by each stress sensor 1031 on the stress chain 103; the recording unit 402 is also connected to the processor 100, and is configured to send strain amount data acquired by each stress sensor 1031 on the stress chain 103 to the processor 100.
As shown in fig. 4, the recording unit 402 may be connected to the head end of a bus 401 in the stress chain 103, the bus 401 may transmit the strain amount data acquired by each stress sensor 1031 connected thereto to the recording unit 402, and the recording unit 402 may store the strain amount data in association according to the number of each stress sensor 1031, record the strain amount data of each stress sensor 1031 in the form of a table, and transmit the table to the processor 100 according to a preset period.
Optionally, the recording unit 402 may also delete the historical strain amount data according to a preset period, so as to ensure that the recording unit 402 has enough space to record the strain amount data of each stress sensor 1031.
Optionally, a power supply unit 403 is further disposed on the monitoring device 102; the power supply unit 403 is connected to the stress chain 103 and the recording unit 402, respectively, and is configured to supply power to each stress sensor 1031 and the recording unit 402 provided in the stress chain 103.
As shown in fig. 4, the power supply unit 403 may be connected to a head end of a bus in the stress chain 103 together with the recording unit 402, the power supply unit 403 may provide an operating voltage to each stress sensor 1031 through the bus 401 so that each stress sensor 1031 may operate normally, the power supply unit 403 may be connected to a power port of the recording unit 402, and the recording unit 402 may be provided with an operating voltage through a power port of the recording unit 402 so that the recording unit 402 operates normally under the action of the operating voltage.
Optionally, each monitoring point 101 is a borehole 400; the monitoring device 102 is also provided with a sealing device 404; a closure device 404 is disposed at the top end of the bore 400; the top and bottom ends of the closing means 404 are provided with through holes, respectively, through which the stress chains 103 are arranged vertically in the bore 400.
As shown in fig. 2 and 4, the worker drills holes at each monitoring point 101 in fig. 2 by using the drilling equipment, and forms the drill hole 400 in fig. 4 in the ground corresponding to each monitoring point 101, the depth of the drill hole 400 can be set according to the length of the stress chain 103 on the monitoring equipment 102, and the radius of the drill hole 400 can also be set according to the construction requirements, which is not limited in the present application.
Alternatively, the closing device 404 and the stress chain 103 in fig. 4 may be separate bodies, and after the borehole 400 is formed, the closing device 404 may be first disposed at the top end of the borehole 400, and then the stress chain 103 is inserted into the borehole 400, wherein the tail end of the stress chain 103 is connected to the gravity device 104, and the tail end of the stress chain 103 is connected to the recording unit 402 and the power supply unit 403; the closure device 404 and the stress chain 103 may also be a body, which is arranged at the borehole 400 after the borehole 400 is formed, and the closure device 404 on the body is clamped at the top end of the borehole 400. It can be seen that the sealing device 404 can ensure that the monitoring equipment 102 works normally, and is protected from the influence of weather conditions (such as rainstorm) and human influence, so that each stress sensor 1031 can acquire more accurate strain data, and the accuracy of determining the collapse area in the collapse process of the goaf is further improved.
Alternatively, as can be seen from fig. 4, both the recording unit 402 and the power supply unit 403 may be disposed outside the enclosure 404, and the recording unit 402 and the power supply unit 403 may also be disposed inside the enclosure. This application is not limited thereto.
Optionally, the number of monitoring points 101 is 3, and each monitoring point 101 forms an equilateral triangle. As shown in fig. 2, the distances between the adjacent monitoring points 101 are equal, so that the error of the actual collapse region in each sliding angle direction of the same layer to be collapsed calculated by the adjacent monitoring devices 102 can be reduced.
Of course, the number of the monitoring points 101 may be 3 or more, and each monitoring point 101 may be a regular polygon, and most preferably a circle. It can be seen that the number of monitoring devices 102 required for approaching a circle increases, so the number of monitoring points 101 needs to be determined between cost and accuracy, and the accuracy of determining the collapse region can be mentioned by making the spacing between adjacent monitoring points 101 as uniform as possible on the premise that the number of monitoring points 101 is known.
The monitoring method of the goaf collapse area performed by the processor in the goaf collapse area monitoring system provided by the present application is illustrated in the following with reference to the accompanying drawings. Fig. 5 is a schematic flow chart of a monitoring method for a goaf collapse area according to an embodiment of the present application, where as shown in fig. 5, the method includes:
s501, receiving strain data acquired by each stress sensor in each monitoring device.
S502, determining an actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors.
Wherein, in the process of goaf collapse, each stress sensor in each monitoring device corresponds to strain data, each monitoring device sends the strain data of each stress sensor to a processor, the processor determines the collapsed layer to be collapsed according to the obtained relationship between the strain data and the strain threshold, the collapse direction of the collapsed layer to be collapsed can be determined according to the strain data difference and the distance between the upper and lower two stress sensors of the collapsed layer to be collapsed, it is required to explain that each monitoring device can determine the collapse direction of the collapsed layer to be collapsed, then the processor determines the total actual collapse area of the target layer to be collapsed according to the collapse directions of the collapsed layer to be collapsed, and takes the total actual collapse area of the target layer to be collapsed as the actual collapse area of the goaf, the target to-be-collapsed layer is any one of the layers to be collapsed, and the application does not limit the target to-be-collapsed layer.
Fig. 6 is a schematic flow chart of another monitoring method for a collapse area of a goaf according to an embodiment of the present disclosure. Optionally, as shown in fig. 6, the determining an actual collapse area of the goaf according to the strain amount data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors includes:
s601, determining a sliding angle of the goaf according to strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors.
The slip angle of the goaf can be understood as a slip angle corresponding to each layer to be collapsed, the slip angle is equivalent to the rock-soil body fracture angle a, a layer to be collapsed (target layer to be collapsed) is taken as an example for explanation, if 3 monitoring devices are provided, the processor can determine the difference value of the strain data and the ratio between the two stress sensors according to the strain data acquired by the two stress sensors located above and below the target layer to be collapsed in each monitoring device and the distance between the two stress sensors, and the ratio results are respectively taken as a slip angle 1, a slip angle 2 and a slip angle 3, namely the target layer to be collapsed corresponds to three slip angles, namely the target layer to be collapsed is collapsed from three directions in the goaf.
S602, determining an actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
The distance between the target layer to be collapsed and the goaf can be determined according to the depth information of the goaf and the depth information corresponding to the target layer to be collapsed, and the distance and the goaf range, namely the area information of the goaf are stored in a memory of the processor in advance. Continuing the above example, the processor may determine the actual collapse region 1 of the target layer to be collapsed in the direction of the sliding angle 1 according to the sliding angle 1, the goaf area and the distance, the processor may determine the actual collapse region 2 of the target layer to be collapsed in the direction of the sliding angle 2 according to the sliding angle 2, the goaf area and the distance, the processor may determine the actual collapse region 3 of the target layer to be collapsed in the direction of the sliding angle 3 according to the sliding angle 3, the goaf area and the distance, the processor finally determines the total actual collapse region of the target layer to be collapsed by combining the actual collapse region 1, the actual collapse region 2 and the actual collapse region 3, and takes the total actual collapse region as the actual collapse region of the goaf, other descriptions may refer to explanations of similar parts of the goaf collapse area monitoring system, which will not be further described herein.
It should be noted that the more monitoring devices, the more collapse regions of the target layer to be collapsed in the multiple sliding angle directions can be obtained, and the accuracy of determining the actual collapse regions of the goaf can be further improved.
Fig. 7 is a schematic flow chart of another monitoring method for a collapse area of a goaf according to an embodiment of the present disclosure. Optionally, as shown in fig. 7, the receiving strain data acquired by each stress sensor in each monitoring device includes:
s701, determining the maximum collapse area and the minimum collapse range of the goaf according to the rock-soil body fracture angle interval.
S702, strain data obtained by stress sensors in monitoring equipment arranged between the maximum collapse area and the minimum collapse area of the goaf are received.
The rock-soil body fracture angle and the rock-soil body internal friction angle are firstly closed, the rock-soil body internal friction angle can be determined according to geological survey data in the coal mining process, specifically, the rock-soil body internal friction angle is an interval range, the rock-soil body fracture angle interval can be calculated according to an A (45 degrees) + rock-soil body internal friction angle/2 formula, and after the rock-soil body fracture angle interval is determined, the maximum collapse area and the minimum collapse range of a goaf can be determined according to information such as the goaf range and the goaf depth.
And each monitoring device is arranged on a monitoring point preset between the maximum collapse area and the minimum collapse range of the goaf, each strain sensor on each monitoring device can generate strain data in the process of goaf collapse, and each monitoring device sends the strain data corresponding to each strain sensor to the processor.
On the basis of providing the goaf collapse area monitoring method, the application also provides a device, an electronic device and a storage medium which can execute the goaf collapse area monitoring method, and the following explanations are respectively provided. Fig. 8 is a goaf collapse area monitoring device according to an embodiment of the present disclosure. As shown in fig. 8, the apparatus includes:
the receiving module 801 is configured to receive strain data acquired by each stress sensor in each monitoring device.
The determining module 802 is configured to determine an actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors.
Optionally, the determining module 802 is specifically configured to determine a sliding angle of the goaf according to the strain amount data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors; and determining an actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
Optionally, the receiving module 801 is specifically configured to determine a maximum collapse area and a minimum collapse range of the goaf according to the rock-soil body fracture angle interval; and receiving strain data acquired by each stress sensor in each monitoring device arranged between the maximum collapse area and the minimum collapse area of the goaf.
The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors, or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 9, the server may include: a processor 901, a storage medium 902 and a bus 903, the storage medium 902 storing machine readable instructions executable by the processor 901, the processor 901 communicating with the storage medium 902 via the bus 903 when the server is running, the processor 901 executing the machine readable instructions to perform the steps of the above method. The specific implementation and technical effects are similar, and are not described herein again.
Optionally, the present application further provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program performs the steps of the above method embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. Alternatively, the indirect coupling or communication connection of devices or units may be electrical, mechanical or other.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A goaf collapse area monitoring system, the system comprising: the monitoring system comprises a plurality of monitoring points, monitoring equipment and a processor, wherein the monitoring equipment and the processor are arranged on each monitoring point, and each monitoring point is arranged between a maximum collapse area and a minimum collapse area of a goaf;
each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors; the gravity device is used for keeping each stress sensor in a horizontal direction; the stress sensor is used for acquiring strain data;
the processor is used for receiving strain quantity data acquired by the stress sensors in the monitoring devices and determining an actual collapse area of the goaf according to the strain quantity data and the distance between adjacent stress sensors.
2. The system of claim 1, wherein a recording unit is further disposed on the monitoring device;
the recording unit is connected with the stress chain and is used for recording strain data acquired by each stress sensor on the stress chain;
the recording unit is also connected with the processor and is used for sending the strain quantity data acquired by each stress sensor on the stress chain to the processor.
3. The system of claim 2, wherein a power supply unit is further disposed on the monitoring device;
the power supply unit is respectively connected with the stress chain and the recording unit and is used for supplying power to each stress sensor and the recording unit which are arranged on the stress chain.
4. The system of claim 3, wherein each of the monitoring points is a borehole; the monitoring equipment is also provided with a sealing device;
the closing device is arranged at the top end of the drilling hole;
the top end and the bottom end of the sealing device are respectively provided with a through hole, and the stress chain penetrates through the through holes and is vertically arranged in the drill holes.
5. The system of any one of claims 1-4, wherein the number of monitoring points is 3, each monitoring point forming an equilateral triangle.
6. A monitoring device, characterized in that the monitoring device is a monitoring device according to any one of claims 1-5.
7. A goaf collapse area monitoring method applied to a processor in the goaf collapse area monitoring system of any one of claims 1-5, the method comprising:
receiving strain data acquired by each stress sensor in each monitoring device;
and determining an actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors.
8. The method of claim 7, wherein determining an actual collapse zone of the gob from strain data acquired by each of the stress sensors in each of the monitoring devices and a spacing between adjacent stress sensors comprises:
determining a sliding angle of the goaf according to strain data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors;
and determining an actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
9. The method of claim 7, wherein said receiving strain data obtained by each stress sensor in each of said monitoring devices comprises:
determining a maximum collapse area and a minimum collapse range of the goaf according to the rock-soil body fracture angle interval;
strain data acquired by each stress sensor in each monitoring device disposed between a maximum collapse region and a minimum collapse region of the gob is received.
10. A goaf collapse area monitoring device for use with a processor in a goaf collapse area monitoring system as claimed in any one of claims 1 to 5, the device comprising:
the receiving module is used for receiving strain data acquired by each stress sensor in each monitoring device;
and the determining module is used for determining the actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086725.1A CN114413838A (en) | 2022-01-25 | 2022-01-25 | Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086725.1A CN114413838A (en) | 2022-01-25 | 2022-01-25 | Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114413838A true CN114413838A (en) | 2022-04-29 |
Family
ID=81276806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210086725.1A Pending CN114413838A (en) | 2022-01-25 | 2022-01-25 | Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114413838A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066896A (en) * | 2015-07-18 | 2015-11-18 | 深圳市勘察研究院有限公司 | Karst collapse real-time fiber early warning forecasting system |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN110297878A (en) * | 2019-07-03 | 2019-10-01 | 中煤航测遥感集团有限公司 | Coherent Noise in GPR Record and geographic location association method and device |
| CN112197815A (en) * | 2020-10-28 | 2021-01-08 | 江苏省地质矿产局第五地质大队 | Gypsum ore collapse monitoring system and construction method |
| CN112525148A (en) * | 2020-11-04 | 2021-03-19 | 中铁第四勘察设计院集团有限公司 | Method for determining deformation range of goaf |
| CN113899343A (en) * | 2021-12-09 | 2022-01-07 | 湖北工业大学 | Foundation settlement monitoring system and method based on distributed optical fiber strain sensing technology |
-
2022
- 2022-01-25 CN CN202210086725.1A patent/CN114413838A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066896A (en) * | 2015-07-18 | 2015-11-18 | 深圳市勘察研究院有限公司 | Karst collapse real-time fiber early warning forecasting system |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN110297878A (en) * | 2019-07-03 | 2019-10-01 | 中煤航测遥感集团有限公司 | Coherent Noise in GPR Record and geographic location association method and device |
| CN112197815A (en) * | 2020-10-28 | 2021-01-08 | 江苏省地质矿产局第五地质大队 | Gypsum ore collapse monitoring system and construction method |
| CN112525148A (en) * | 2020-11-04 | 2021-03-19 | 中铁第四勘察设计院集团有限公司 | Method for determining deformation range of goaf |
| CN113899343A (en) * | 2021-12-09 | 2022-01-07 | 湖北工业大学 | Foundation settlement monitoring system and method based on distributed optical fiber strain sensing technology |
Non-Patent Citations (1)
| Title |
|---|
| 罗小杰: "《城市岩溶与地史滑坡研究》", vol. 1, 中国地质大学出版社有限责任公司, pages: 140 - 50 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210348507A1 (en) | System and method of triggering, acquiring and communicating borehole data for a mwd system | |
| US10539001B2 (en) | Automated drilling optimization | |
| US9612359B2 (en) | Generation of fracture networks using seismic data | |
| BR112018070330A2 (en) | TRAINING MEASUREMENTS USING WELL BACKGROUND SOURCES | |
| NO346016B1 (en) | Estimation of uncertainty at the pore pressure of the subsoil based on trend line variations | |
| CN107075936A (en) | For the method and system being modeled to advanced three-dimensional bottomhole component | |
| BRPI1005003A2 (en) | Method of Guiding Well Drilling Operation Using Accidental Measurements, System for Guiding Well Drilling Operation Using Rock Stress Measurements, and Computer Readable Storing Instructions for Guiding a Well Drilling Operation Using Accurate Well Measurements | |
| BR112013019368A2 (en) | method and apparatus for estimating a pressure transition depth in a well bore | |
| CN104136713B (en) | From the wellbore breakouts generation alarm detected automatically and the system and method suggested | |
| CN105467438A (en) | Three-modulus-based shale ground stress three-dimensional seismic characterization method | |
| CN114413838A (en) | Goaf collapse area monitoring system, monitoring equipment, monitoring method and monitoring device | |
| US10430530B2 (en) | Drilling data visualization method | |
| Burbey et al. | Assessing hydrofracing success from Earth tide and barometric response | |
| Lopes et al. | Mind the Gap: A Well Log Data Analysis | |
| Renshaw | Estimation of fracture zone geometry from steady‐state hydraulic head data using iterative sequential cokriging | |
| Moein et al. | Fractal characteristics of fractures in crystalline basement rocks: Insights from depth-dependent correlation analyses to 5 km depth | |
| Castillo et al. | Reservoir geomechanics applied to drilling and completion programs in challenging formations: Northwest Shelf, Timor Sea, North Sea and Colombia | |
| Moein et al. | Preliminary fractal analysis of fracture spacing inferred from an acoustic televiewer log run in the Basel-1 geothermal well (Switzerland) | |
| Muravyev | Geothermal monitoring as a way to predict volcanic eruptions and estimate geothermal energy resources | |
| EP3695097B1 (en) | Field-level analysis of downhole operation logs | |
| Elliott et al. | Modeling the effects of anomalous electromagnetic diffusion on induction logs: The next step in mapping natural fracture corridors | |
| GB2581550A (en) | Method and system to drill a wellbore and identify drill bit failure by deconvoluting sensor data | |
| Ask et al. | A hydraulic stress measurement system for investigations at depth in slim boreholes | |
| Hlepas et al. | Means and methods of evaluating subsurface conditions and project performance at Mosul Dam | |
| Carpenter | Uncertainty evaluation of wellbore-stability-model predictions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |