CN110992197B - Early warning method and system for irregular convergence deformation of coal mine tunnel - Google Patents
Early warning method and system for irregular convergence deformation of coal mine tunnel Download PDFInfo
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- CN110992197B CN110992197B CN201911039150.2A CN201911039150A CN110992197B CN 110992197 B CN110992197 B CN 110992197B CN 201911039150 A CN201911039150 A CN 201911039150A CN 110992197 B CN110992197 B CN 110992197B
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Abstract
The application discloses an early warning method and system for irregular convergence deformation of a coal mine tunnel, relates to the technical field of coal mine underground mining and supporting, and can improve monitoring and early warning accuracy. The method comprises the following steps: calculating structural deformation information of a flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod; obtaining judgment information for judging the dangerous type of the profile of the section of the roadway according to the calculated structural deformation information of the flexible measuring line; comparing the obtained judgment information with preset danger type information, and generating corresponding prompt information according to a comparison result; wherein, the flexible measuring line is enclosed by a plurality of rigid measuring rods.
Description
Technical Field
The application relates to the technical field of coal mine underground mining and supporting, in particular to an early warning method and system for irregular convergence and deformation of a coal mine roadway.
Background
With the increasing mining depth and mining intensity of coal mines in China, coal mine tunnels bear heavy tasks of transportation, ventilation, drainage, pedestrians and the like in the underground high-stress environment of the coal mines, and are life and safety channels of the coal mines.
Different from the ground surface tunnel engineering, the coal mine tunnel is often buried deeply, the coal mine tunnel bears the rock stratum load of covering hundreds of meters in the vertical direction and also bears the horizontal ground stress far larger than the overlying rock load in the horizontal direction, and the common roof fall, bottom heave and deformation of the tunnel threatens the normal operation of the mine. According to statistics, about 6000 underground coal mines exist in China, the average length of an underground roadway of each coal mine exceeds 100 kilometers, the supporting cost of the roadway per meter is low, four to five thousand yuan, and more is tens of thousands yuan. An ordinary mine is usually used for about 50-70% of underground work for tunneling, supporting or maintaining a roadway; moreover, in some deep-extraction mines, the productivity of the coal mine is more dependent on the level of auxiliary roadway maintenance and support technology than on direct coal mining. Therefore, the deformation control of the coal mine tunnel is another arduous task in the coal mining field except the working face coal mining.
On one hand, if a roadway is arranged under the condition of high ground stress or soft rock, the deformation of the roadway section of a newly dug coal mine roadway is more than half, and some roadways are even close to closed roadway sections in a short period of several months; in the service life of partial roadways, the secondary, even the third and the fourth renovation are needed, the roadway repair cost in the later period is 2 and 3 times of the original one-time supporting cost, and the cost is higher. On the other hand, due to the complexity of coal seam occurrence conditions, coal mine roadway deformation is closely related to more factors in the environment where the coal mine roadway deformation is located, and the measurement difficulty of coal mine roadway deformation or delamination amount is higher.
In addition, the method for measuring the deformation or the delamination amount of the coal mine roadway has the technical problems of high working strength, low accuracy, poor timeliness and the like. For example, the safety of personnel cannot be guaranteed, the irregular convergence deformation condition of the coal mine tunnel under strong dynamic pressure is difficult to accurately reflect, the deformation or delamination amount of the coal mine tunnel cannot be monitored and measured in real time, the cost is high, and the popularization and application performance is weak.
Disclosure of Invention
In view of this, the embodiment of the application provides a method and a system for early warning of irregular convergence deformation of a coal mine tunnel, and mainly aims to solve the technical problems of high working strength, low accuracy, poor timeliness and the like of the existing method for measuring deformation or delamination quantity of the coal mine tunnel, for example, personnel safety cannot be guaranteed, the irregular convergence deformation condition of the coal mine tunnel under a strong dynamic pressure cannot be accurately reflected, the deformation or delamination quantity of the coal mine tunnel cannot be monitored and measured in real time, personnel cost is high, and popularization and application performance is weak.
According to an aspect of an embodiment of the present application, a method for early warning of irregular convergence deformation of a coal mine roadway is provided, where the method includes:
calculating structural deformation information of a flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod;
obtaining judgment information for judging the dangerous type of the profile of the roadway section according to the calculated structural deformation information of the flexible measuring line;
comparing the obtained judgment information with preset danger type information, and generating corresponding prompt information according to a comparison result;
wherein, the flexible measuring line is enclosed by a plurality of rigid measuring rods.
According to another aspect of the embodiments of the present application, there is provided a system for early warning of irregular convergence and deformation of a coal mine roadway, the system including:
the acquisition module is used for calculating the structural deformation information of the flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod;
the processing module is used for obtaining judgment information for judging the dangerous type of the profile of the section of the roadway according to the calculated structural deformation information of the flexible measuring line;
the prompt module is used for comparing the obtained judgment information with preset danger type information and generating corresponding prompt information according to a comparison result;
wherein, the flexible measuring line is enclosed by a plurality of rigid measuring rods.
According to another aspect of the embodiments of the present application, there is provided a storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method for early warning of irregular convergence deformation of a coal mine roadway.
According to another aspect of the embodiments of the present application, there is provided a computer device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, where the processor implements the method for early warning of irregular convergence deformation of a coal mine roadway when executing the program.
By means of the technical scheme, compared with the technical scheme of the existing method for measuring the deformation or the separation amount of the coal mine tunnel, the early warning method and the early warning system for the irregular convergence deformation of the coal mine tunnel provided by the embodiment of the application calculate the structural deformation information of the flexible measuring line for representing the profile of the cross section of the tunnel according to the obtained spatial position coordinates of the rigid measuring rod, so that the judgment information for judging the danger type of the profile of the cross section of the tunnel is obtained according to the calculated structural deformation information of the flexible measuring line, the obtained judgment information is compared with the preset danger type information, and the corresponding prompt information is generated according to the comparison result. Therefore, according to the embodiment of the application, judgment information for judging the dangerous type of the profile of the section of the roadway can be obtained by performing a series of operation processing on the obtained spatial position coordinates of the rigid measuring rod, so that dynamic monitoring and early warning of irregular deformation of the profile of the section of the roadway can be realized according to the preset dangerous type information, the accuracy of measurement and early warning is improved, the personnel cost is reduced, the safety of personnel is ensured, and the method and the device are suitable for testing irregular convergence deformation of large sections or soft rock roadways.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flow chart illustrating an early warning method for irregular convergence deformation of a coal mine roadway according to an embodiment of the present application;
fig. 2 is a schematic flow chart illustrating another method for early warning of irregular convergence deformation of a coal mine roadway according to an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a rigid measuring rod spatial position coordinate calculation method according to an embodiment of the present application;
fig. 4 shows a structural schematic diagram of an early warning system for irregular convergence and deformation of a coal mine roadway provided in an embodiment of the present application
Fig. 5 shows a schematic structural diagram of an early warning system for irregular convergence and deformation of a coal mine roadway according to an embodiment of the present application.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The method aims at the technical problems of high working strength, low accuracy, poor timeliness and the like of the existing method for measuring the coal mine roadway deformation or the separation amount. The embodiment provides a coal mine tunnel irregular convergence deformation early warning method, which can effectively avoid the problem that personnel safety cannot be guaranteed, the irregular convergence deformation condition of a coal mine tunnel under strong dynamic pressure is difficult to accurately reflect, the deformation or delamination amount of the coal mine tunnel cannot be monitored and measured in real time, personnel cost is high, popularization applicability is weak, and the like, and as shown in fig. 1, the method comprises the following steps:
101. calculating structural deformation information of a flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod; wherein, the flexible measuring line is enclosed by a plurality of rigid measuring rods.
In this embodiment, assuming that an irregular roadway section profile is selected, the perimeter of the irregular roadway section profile is set to be a, and the perimeter of the irregular roadway section profile is divided into n equal parts, and when n is sufficiently large, the roadway section profile is approximately understood to be formed by connecting n equal-length straight line segments with the side length of a/n end to end. If the side length of the straight line segment is known and the included angle between any two adjacent straight line segments is known, the approximate profile of the section of the roadway is obtained through operation processing.
According to the requirements of practical application scenes, equal-length line segments adopt rigid measuring rods with the same length, a hinge structure capable of rotating in a direction is adopted between the rigid measuring rods, a high-precision inclination angle sensor is arranged at a specific position of each rigid measuring rod and used for measuring the inclination angle variation of each rigid measuring rod, so that the included angle between two adjacent rigid measuring rods is further obtained, and the profile characteristics (namely the structural deformation information of the flexible measuring lines) of the profile of the irregular roadway section are determined according to the known lengths of the rigid measuring rods and the included angle between the rigid measuring rods.
The length of each rigid measuring rod is a fixed value and is equal in length, the spatial position coordinates of all the rigid measuring rods are determined according to the reading of the inclination angle sensor of each rigid measuring rod, specifically, the hinge point coordinates of all adjacent rigid measuring rods are connected to obtain structural deformation information of a roadway section outline, the inclination angle sensors of all the rigid measuring rods have the functions of grouping, initial value setting and error correction, data transmission is carried out to a system processor on the ground through wire or wireless, the outer sides of the mutually connected rigid measuring rods are coated with flexible outer protective sleeves, and flexible laying is achieved according to the perimeter of the roadway section.
It should be noted that, this flexible survey line can be adapted to various coal mine tunnel design sections, include: trapezoidal, rectangle, arch, horseshoe shape etc. because the profile can become more complicated after the tunnel irregular deformation, consequently the material of this flexible survey line is flexible material to guarantee that it can paste the tunnel internal surface and adapt to its irregular convergence deformation.
102. And obtaining judgment information for judging the dangerous type of the profile of the roadway section according to the calculated structural deformation information of the flexible measuring line.
In this embodiment, under the action of strong dynamic pressure, since the tunnel cross section may be in convergence deformation, the irregular convergence deformation of the tunnel cross section profile which may exist includes one or more of sinking of the top plate, bulging of the bottom plate, and unbalanced deformation of the two sides, that is, unbalanced deformation of the top plate, the bottom plate, and the two sides of the tunnel cross section may occur simultaneously. And monitoring the unbalanced deformation of the whole roadway section in real time according to the calculated structural deformation information of the flexible measuring line. For example, the absolute sinking amount of a top plate of the whole roadway section, the absolute bulging amount of a bottom plate and the respective bulging amounts of two side walls are monitored in real time, so that the problem of difficulty in space positioning of the existing roadway section is effectively solved, and space positioning is accurately realized.
103. And comparing the obtained judgment information with preset danger type information, and generating corresponding prompt information according to a comparison result.
In this embodiment, a flexible measuring line with a plurality of inclination sensors built therein is laid along the inner surface of a section of a coal mine roadway, and is transmitted to a system processor (for example, a monitoring and early warning software device) on the ground through an optical fiber or a standard CAN bus according to an inclination angle monitored by the inclination sensors, so that a monitoring and early warning software module performs operation processing according to the monitored inclination angle, and obtains profile characteristics of a profile of the section of the roadway to be measured and structural deformation information of the section of the roadway at any point and at any moment in real time, and judgment information (for example, deformation amount, deformation speed and acceleration) for judging the dangerous type of the profile of the section of the roadway, and the obtained judgment information is compared with preset dangerous type information through a standard value of each deformation index in the preset dangerous type information, so as to realize dynamic monitoring and early warning of irregular deformation of the section of the roadway according to the comparison result.
The embodiment adopts an optical fiber or standard CAN bus form for data transmission, CAN realize real-time data transmission and online analysis, enhances timeliness, and CAN be combined with other monitoring systems (for example, a mine pressure monitoring system) of a coal mine to realize comprehensive monitoring and early warning of underground disasters of the coal mine.
According to the scheme, according to the space position coordinates of the obtained rigid measuring rod, the structural deformation information of the flexible measuring line for representing the profile of the section of the roadway is calculated, so that the judgment information for judging the dangerous type of the profile of the section of the roadway is obtained according to the calculated structural deformation information of the flexible measuring line, the obtained judgment information is compared with the preset dangerous type information, and the corresponding prompt information is generated according to the comparison result. Therefore, according to the embodiment of the application, a series of operation processing can be carried out on the spatial position coordinates of the obtained rigid measuring rod, so that judgment information for judging the danger type of the section profile of the roadway is obtained, dynamic monitoring and early warning of irregular deformation of the section profile of the roadway are achieved according to the preset danger type information, the accuracy of measurement and early warning is improved, the personnel cost is reduced, the safety of personnel is guaranteed, the method and the device are applicable to testing of irregular convergence deformation of large sections or soft rock roadways, and therefore the deformation or roof collapse of the section of the roadway is further controlled.
Further, as a refinement and an extension of the specific implementation of the foregoing embodiment, in order to fully explain the specific implementation process of the embodiment, another method for warning irregular convergence and deformation of a coal mine roadway is provided, as shown in fig. 2, the method includes:
201. and acquiring the space position coordinates of the rigid measuring rod.
For explaining the specific implementation of step 201, as a preferred embodiment, step 201 may specifically include:
2011. and acquiring the current inclination angle of the rigid measuring rod according to the inclination angle sensor arranged in the middle of the rigid measuring rod.
In the concrete implementation, the inclination angle sensor is installed in each rigid measuring rod, two adjacent rigid measuring rods are connected through a special directional hinge joint, flexible intrinsic safety type outer protective sleeves are laid on the outer sides of all the rigid measuring rods, and the processor of the top plate subsidence measuring device is installed in the intrinsic safety type outer protective shells.
The embodiment can adapt to the underground severe environment, has the characteristics of interference resistance, good stability, water resistance, high temperature resistance, high accuracy and the like, is convenient to install, is simple to operate, is very suitable for the underground coal mine condition with complex environment, can be arranged underground for a long time, and realizes continuous and stable monitoring operation.
2012. And monitoring and acquiring the sinking amount of a rigid measuring rod for representing the roadway section top plate in real time by using the top plate sinking amount measuring device.
2013. And calculating the space position coordinate of the rigid measuring rod according to the thickness of the high-position stable rock stratum and the thickness of the low-position roadway top plate at the position of the roadway section, the obtained current inclination angle and the obtained sinking amount of the rigid measuring rod.
In the concrete implementation, a vertical long drill hole is constructed at the top of a roadway, a harder and more stable rock stratum is selected as an origin of coordinates at the deep part of the drill hole, a top plate sinking amount measuring device is installed below the drill hole, the top plate sinking amount measuring device is provided with two base point anchor heads with different depths, the deep base point anchor heads are fixed in the stable and hard rock stratum at the deep part of the top plate through the drill hole, namely the origin of coordinates, and the rock stratum at the position is not sunk or deformed and is not influenced by the deformation of the roadway; the shallow base point is fixed in the top plate rock stratum of the shallow part of the drilling hole through the anchor head and is greatly influenced by roadway deformation. Therefore, when the tunnel roof sinks, the shallow roof sleeve moves downwards along the displacement measuring cylinder, the movement amount can be displayed by a displacement measuring cylinder ruler or an electronic displacement meter, and the displacement value is the sinking amount of the tunnel roof.
According to the requirements of practical application scenes, the rigid measuring rod at the top of the roadway is fixedly connected with the top plate subsidence measuring device, the fixed rigid measuring rod is driven to sink while the top plate deforms and sinks, and the subsidence of the top plate of the roadway is the subsidence of the rigid measuring rod, so that the uniformity of space coordinates according to roadway top plate subsidence monitoring and roadway section contour deformation monitoring is realized. In addition, according to the coordinate origin determined by the anchor head of the deep foundation point, the coordinate corresponding relation between the rigid measuring rod and other rigid measuring rods on the profile of the roadway section is established, so that the space position coordinates of other rigid measuring rods are determined according to the coordinate corresponding relation, and the space position coordinates of other rigid measuring rods are further obtained.
202. And determining the profile information of the flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod.
In specific implementations, e.g.As shown in fig. 3, the deep-footing anchor head of the roof subsidence measuring device is fixed in the high-level stable rock stratum, the shallow-footing anchor head is fixed in the low-level roadway roof, the fixing point of the deep-footing anchor head is set to be the origin of coordinates O (0, 0), and when the roadway roof is sunken from the stratum or the roadway wall is deformed, if the thickness of the high-level stable rock stratum where the deep-footing anchor head is located is a, the thickness of the low-level roadway roof where the shallow-footing anchor head is fixed is b, and the subsidence of the roof is c, the subsidence of the roof subsidence measuring device and the rigid measuring rod fixedly connected with the roof subsidence measuring device is also c. Assuming that each rigid measuring rod has a length l, a high-precision tilt angle sensor of each rigid measuring rod is arranged in the middle of each rigid measuring rod. If the actual inclination angle reading of the rigid measuring rod AB is theta AB Then the coordinate A (x) of the hinge point A is calculated A ，y A ) Is composed of
Coordinate B (x) of hinge point B B ，y B ) Is composed of
If the actual inclination angle reading of the rigid measuring bar BC is theta BC Then the coordinate C (x) of the hinge point C is calculated C ，y C ) Is->
If the actual reading of the inclination angle of the rigid measuring rod CD is theta CD Then the coordinate D (x) of the hinge point D is calculated D ，y D ) Is composed of
And analogizing in turn, further calculating coordinates of all other hinged points on the flexible measuring line, and connecting adjacent hinged points on the flexible measuring line surrounding the profile of the section of the roadway to obtain the real-time profile (namely profile information) of the section of the roadway.
In the embodiment, the form of the profile of the section of the roadway is replayed in real time by monitoring the coordinate variation of the hinge point of each rigid measuring rod on the profile of the section of the roadway; in addition, because whole tunnel section profile is in the process that dynamic convergence warp all the time, space orientation is difficult, consequently, through set up deep basal point anchor point in the deep stable hard rock stratum of roof to the rigidity measuring staff pin joint on the tunnel section profile regards deep basal point anchor point as the origin of coordinates, monitors the change of its relative position, thereby reaches space orientation's technological effect.
203. And comparing the determined profile information with the initial profile information of the flexible measuring line, and calculating the structural deformation information of the flexible measuring line.
In specific implementation, a system processor (corresponding to a system host, for example, a monitoring and early warning software device) is composed of a key input interface, a single chip microcomputer, a memory, a display circuit and the like, and initial contour information before deformation of a roadway section to be measured, which is input by the key input interface, is mainly used for initial setting of the system processor. Specifically, the number of a specific roadway section to be measured, the number and initial inclination value of each inclination sensor, parameters of each rigid measuring rod (for example, the position number of the rigid measuring rod on the roadway section, the initial coordinates of the hinge point of each rigid measuring rod, the length and number of the rigid measuring rods), initial readings of the roof subsidence measuring device (for example, the initial roof subsidence value, the set origin of coordinates), and the like are specified. Wherein, the roof sinkage measuring device is a roof separation instrument.
In addition, the system formed by the embodiment is arranged on the surface of the section of the roadway, realizes coupling contact along with the change of the profile of the section of the roadway, can be disassembled after a monitoring task is completed, and can be arranged in other areas again, so that repeatability is realized, and the cost is lower.
204. And calculating deformation characteristic information of the roadway section according to the calculated structural deformation information of the flexible measuring line, wherein the deformation characteristic information is one or more of the sinking amount of the top plate, the bottom bulging amount of the bottom plate and the bulging amount of the two upper sides.
In specific implementation, the top plate sinking amount can be directly measured by the top plate sinking amount measuring device, the bottom plate bottom bulging amount or the two-side wall bulging amount is obtained by calculating new coordinates of hinge points at two ends of the rigid measuring rod according to the current inclination angle (or inclination angle variation) of the rigid measuring rod at the position of the bottom plate or the two sides and the length of the rigid measuring rod, and the bottom plate bottom bulging amount or the two-side wall bulging amount (or variation of the initial bottom plate bottom bulging amount or the two-side wall bulging amount and the current bottom plate bottom bulging amount or the two-side wall bulging amount) is calculated according to the position relationship between the new coordinates and the initial coordinates.
205. And comparing the calculated deformation characteristic information of the roadway section with standard deformation characteristic information in a preset corresponding relation, and determining a deformation characteristic factor corresponding to the deformation characteristic information of the roadway section.
206. And generating corresponding prompt information according to the determined deformation characteristic factors.
In a specific implementation, the preset corresponding relationship is a corresponding relationship between the top plate sinking amount, the bottom plate bottom bulging amount, the two upper side bulging amount and standard deformation characteristic information, and the standard deformation characteristic information is a standard threshold corresponding to the deformation characteristic factor (or a corresponding relationship between different standard thresholds and the deformation characteristic factor). Specifically, the current roof subsidence (or the variation between the initial roof subsidence and the current roof subsidence) of the roadway section is determined, and the standard deformation characteristic information corresponding to the current roof subsidence (i.e., the standard threshold set for the roof subsidence) is determined by using the correspondence between the roof subsidence and the standard deformation characteristic information, so as to obtain the corresponding deformation characteristic factor. Wherein, the deformation characteristic factor is a force source or a main control factor causing the deformation of the roadway section.
According to the requirements of an actual application scene, determining a standard threshold range in which the floor heave amount meets according to the current floor heave amount of the roadway section, and determining a corresponding deformation characteristic factor according to the met standard threshold range, wherein for example, the force source causing the roadway section to deform or the main control factor is that the floor is soft rock. Or, determining a standard threshold range that the left wall bulging amount meets according to the current left wall bulging amount of the roadway section, and determining a corresponding deformation characteristic factor according to the standard threshold range that meets, for example, a force source or a main control factor causing deformation of the roadway section is that a stress concentration region such as a coal pillar exists above the left side of the roadway section.
As a preferred embodiment, steps 204-206 may further include:
2041. and calculating speed change information of the roadway section according to the calculated structural deformation information of the flexible measuring line, wherein the speed change information is the deformation speed and/or the deformation acceleration of the flexible measuring line.
2051. And comparing the calculated speed change information of the roadway section with a preset danger level interval, and determining the danger level of the roadway section according to the comparison result.
2061. And generating corresponding prompt information according to the determined danger level.
In specific implementation, a single chip of the system processor performs operation processing according to the acquired inclination angle of the inclination sensor and the measured value of the top plate sinking amount to obtain the real-time contour shape of the section of the roadway and deformation characteristic information such as the sinking amount of the top plate of the roadway, the bottom plate bottom bulging amount, the two upper wall bulging amount and the like, and outputs and displays the information by using a display circuit. Further, the distance change value of the local position of the roadway section obtained through the operation processing is used for obtaining the speed change information such as deformation speed and acceleration, and the speed change information is output and displayed by a display circuit, for example, curve description or data display is carried out through a screen of the display circuit.
And according to the requirements of the actual application scene, calculating the position coordinates of any hinge point at different time points to obtain a displacement change curve of the hinge point. Further, the rigid measuring rods at the top plate, the bottom plate and the two sides are respectively numbered, the position coordinates of the corresponding rigid measuring rods before and after the deformation of the section of the roadway are recorded, and the sinking amount of the top plate, the bottom bulging amount of the bottom plate, the variable quantity of the bulging amount of the two sides, the deformation speed, the acceleration and the like of the section of the roadway are obtained through displacement operation.
Specifically, according to the initial top plate sinking amount of the roadway section and the variation of the current top plate sinking amount, the deformation speed and/or the acceleration of the top plate sinking amount are/is determined, so that a preset danger level interval which is met by the bottom plate bottom heave amount is further determined, and the danger level of the roadway section is determined according to the determined preset danger level interval. In the aspect of deformation speed and acceleration of the roadway section, different danger level intervals (for example, deformation intervals) can be set for different types of roadway sections respectively, and the danger levels include blue, yellow, orange and red, which are respectively expressed as general, heavy, serious and particularly serious, namely blue is the lowest-level early warning and red is the highest-level early warning, so that danger level judgment of the deformation speed and/or the acceleration of the roadway section is realized.
Therefore, the embodiment can accurately analyze and judge the force source or the main control factor of the irregular deformation convergence of the roadway by quantitatively describing the parameter variable quantity, the deformation speed and the acceleration of the sinking quantity of the top plate of the roadway, the bottom heave quantity of the bottom plate and the heave quantity of the two sides.
By applying the technical scheme of the embodiment, the structural deformation information of the flexible measuring line for representing the profile of the section of the roadway is calculated according to the obtained spatial position coordinates of the rigid measuring rod, so that the judgment information for judging the danger type of the profile of the section of the roadway is obtained according to the calculated structural deformation information of the flexible measuring line, the obtained judgment information is compared with the preset danger type information, and the corresponding prompt information is generated according to the comparison result. Compared with the technical scheme of the existing method for measuring the deformation or the separation of the coal mine tunnel, the embodiment can obtain the judgment information for judging the dangerous type of the tunnel section profile by performing a series of operation processing on the obtained spatial position coordinates of the rigid measuring rod, so that the dynamic monitoring and early warning of the irregular deformation of the tunnel section profile can be realized according to the preset dangerous type information, the high-precision monitoring of the tunnel section deformation can be realized, the force source or the main control factor of the tunnel section deformation can be analyzed, so that the working personnel can take corresponding technical measures according to the monitoring and early warning result, for example, pressure relief or support reinforcement is performed to guarantee the use safety of the tunnel, the personnel cost is reduced, and the safety of the personnel is guaranteed.
Further, as a specific implementation of the method in fig. 1, an embodiment of the present application provides an early warning system for irregular convergence deformation of a coal mine roadway, as shown in fig. 4, the system includes: an acquisition module 42, a processing module 43, and a prompt module 44.
The acquisition module 42 is configured to calculate structural deformation information of a flexible survey line for representing a profile of a roadway section according to the acquired spatial position coordinates of the rigid survey rod; wherein, the flexible measuring line is enclosed by a plurality of rigid measuring rods.
And the processing module 43 is configured to obtain judgment information for judging the dangerous type of the profile of the roadway section according to the calculated structural deformation information of the flexible measuring line.
And the prompt module 44 is configured to compare the obtained determination information with preset danger type information, and generate corresponding prompt information according to a comparison result.
In a specific application scenario, as shown in fig. 5, the early warning system for irregular convergence and deformation of a coal mine roadway specifically includes: deep basic point anchor head 1, roof drilling 2, shallow basic point anchor head 3, roof subsidence measuring device 4, deep hard stable rock stratum 5, tunnel roof shallow part rock stratum 6, high accuracy biax tilt angle sensor 7, directional rotation hinge joint 8, rigidity measuring staff 9, tunnel section surface 10, system processor 11, data connection line 12, displacement survey section of thick bamboo 13, wherein, system processor 11 is including obtaining module 42, processing module 43, suggestion module 44.
In the concrete implementation, in the roof construction deep drilling, arrange deep basal point anchor head 1 and shallow basal point anchor head 3 in roof drilling 2, be connected with roof subsidence measuring device 4 through displacement measuring cylinder 13 respectively, high accuracy biax tilt angle sensor 7 arranges the assigned position on rigidity measuring staff 9, connect through directional rotation hinge joint 8 between the rigidity measuring staff 9, connect a certain amount of rigidity measuring staff 9 through directional rotation hinge joint 8 end to it forms a flexible survey line to apply flexible outer protective sheath in the outside. The directional rotation means that when the section of the roadway deforms, displacement or rotation is generated between the related rigid measuring rods, but the displacement or rotation is in the same plane. According to the perimeter of the roadway section, the proper length of the flexible measuring line is selected to be laid along the surface of the roadway section to be measured, the flexible measuring line penetrates through the top plate subsidence measuring device 4 at the top of the roadway section, and the top plate subsidence measuring device 4 is fixedly connected with one of the rigid measuring rods 9. Data collected by the high-precision double-shaft inclination angle sensor 7 on each rigid measuring rod 9 and data collected by the top plate sinking measurement device 4 are transmitted with the system processor 11 through the data connecting line 12.
In a specific application scenario, the system processor 11 further includes a coordinate module 41, configured to obtain a spatial position coordinate of the rigid measuring bar, which specifically includes:
acquiring the current inclination angle of the rigid measuring rod according to an inclination angle sensor arranged in the middle of the rigid measuring rod; monitoring and acquiring the sinking amount of a rigid measuring rod for representing the top plate of the roadway section in real time by using a top plate sinking amount measuring device; and calculating the space position coordinate of the rigid measuring rod according to the thickness of the high-position stable rock stratum and the thickness of the low-position roadway top plate at the position of the roadway section, the obtained current inclination angle and the obtained sinking amount of the rigid measuring rod.
In a specific application scenario, the obtaining module 42 specifically includes: determining profile information of a flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod; and comparing the determined profile information with the initial profile information of the flexible measuring line, and calculating the structural deformation information of the flexible measuring line.
In a specific application scenario, the processing module 43 specifically includes: and calculating deformation characteristic information of the roadway section according to the calculated structural deformation information of the flexible measuring line, wherein the deformation characteristic information is one or more of the sinking amount of the top plate, the bottom bulging amount of the bottom plate and the bulging amount of the two upper sides.
Correspondingly, the prompt module 44 specifically includes: comparing the calculated deformation characteristic information of the roadway section with standard deformation characteristic information in a preset corresponding relation, and determining a deformation characteristic factor corresponding to the deformation characteristic information of the roadway section; and generating corresponding prompt information according to the determined deformation characteristic factor.
In a specific application scenario, the processing module 43 specifically further includes: and calculating speed change information of the roadway section according to the calculated structural deformation information of the flexible measuring line, wherein the speed change information is the deformation speed and/or the deformation acceleration of the flexible measuring line.
Correspondingly, the prompt module 44 specifically includes: comparing the calculated speed change information of the roadway section with a preset danger level interval, and determining the danger level of the roadway section according to the comparison result; and generating corresponding prompt information according to the determined danger level.
It should be noted that other corresponding descriptions of the functional units involved in the early warning of irregular convergence deformation of a coal mine roadway provided in the embodiment of the present application may refer to the corresponding descriptions in fig. 1 and fig. 2, and are not described herein again.
Based on the method shown in fig. 1 and fig. 2, correspondingly, an embodiment of 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 method for early warning of irregular convergence deformation of a coal mine roadway shown in fig. 1 and fig. 2 is implemented.
Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the implementation scenarios of the present application.
Based on the method shown in fig. 1 and fig. 2 and the system embodiment shown in fig. 4, in order to achieve the above object, the present application further provides a computer device, which may specifically be a personal computer, a server, a network device, and the like, where the entity device includes a storage medium and a processor; a storage medium for storing a computer program; and the processor is used for executing a computer program to realize the early warning method for the irregular convergence deformation of the coal mine tunnel shown in the figures 1 and 2.
Optionally, the computer device may further include a user interface, a network interface, a camera, radio Frequency (RF) circuitry, a sensor, audio circuitry, a WI-FI module, and so forth. The user interface may include a Display screen (Display), an input unit such as a keypad (Keyboard), etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (e.g., a bluetooth interface, WI-FI interface), etc.
It will be understood by those skilled in the art that the present embodiment provides a computer device structure that is not limited to the physical device, and may include more or less components, or some components in combination, or a different arrangement of components.
The storage medium may further include an operating system and a network communication module. An operating system is a program that manages the hardware and software resources of a computer device, supporting the operation of information handling programs, as well as other software and/or programs. The network communication module is used for realizing communication among components in the storage medium and other hardware and software in the entity device.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus a necessary general hardware platform, and can also be implemented by hardware. Through applying the technical scheme of this application, compare with the technical scheme of the current method of measuring coal mine tunnel deflection or absciss layer volume, this embodiment can be through carrying out a series of operation processing to the spatial position coordinate of the rigidity measuring staff that obtains, obtain the judgement information that is used for judging tunnel section profile danger type, so that realize the dynamic monitoring and the early warning to the irregular deformation of tunnel section profile according to preset danger type information, promote measurement and early warning accuracy, reduce personnel's cost and guarantee personnel's security, applicable in the test of large cross section or soft rock tunnel irregular convergence deformation.
Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to practice the present application. Those skilled in the art will appreciate that the modules in the system implementing the scenario may be distributed in the system implementing the scenario according to the description of the implementation scenario, or may be correspondingly changed in one or more systems different from the present implementation scenario. The modules of the implementation scenario may be combined into one module, or may be further split into multiple sub-modules.
The above application serial numbers are for description purposes only and do not represent the superiority or inferiority of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.
Claims (8)
1. The early warning method for irregular convergence deformation of the coal mine tunnel is characterized by comprising the following steps of:
acquiring a spatial position coordinate of the rigid measuring rod;
calculating structural deformation information of a flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod;
monitoring to obtain judgment information for judging the dangerous type of the profile of the roadway section according to the calculated structural deformation information of the flexible measuring line;
comparing the obtained judgment information with preset danger type information, and generating corresponding prompt information according to a comparison result;
wherein the flexible measuring line is formed by a plurality of rigid measuring rods in a surrounding manner;
according to the obtained spatial position coordinates of the rigid measuring rod, calculating structural deformation information of a flexible measuring line for representing the profile of the section of the roadway, and specifically comprising the following steps of:
determining profile information of a flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod;
comparing the determined profile information with the initial profile information of the flexible measuring line, and calculating the structural deformation information of the flexible measuring line;
wherein, the spatial position coordinate of obtaining rigid measuring rod specifically includes:
acquiring the current inclination angle of the rigid measuring rod according to an inclination angle sensor arranged in the middle of the rigid measuring rod;
monitoring and acquiring the sinking amount of a rigid measuring rod for representing the top plate of the roadway section in real time by using a top plate sinking amount measuring device;
and calculating the space position coordinate of the rigid measuring rod according to the thickness of the high-position stable rock stratum and the thickness of the low-position roadway top plate at the position of the roadway section, the obtained current inclination angle and the obtained sinking amount of the rigid measuring rod.
2. The method according to claim 1, wherein the obtaining of the judgment information for judging the danger type of the profile of the roadway section according to the calculated structural deformation information of the flexible survey line specifically comprises:
and calculating deformation characteristic information of the roadway section according to the calculated structural deformation information of the flexible measuring line, wherein the deformation characteristic information is one or more of the sinking amount of the top plate, the bottom bulging amount of the bottom plate and the bulging amount of the two upper sides.
3. The method according to claim 2, wherein the comparing the obtained judgment information with preset danger type information and generating corresponding prompt information according to a comparison result specifically comprises:
comparing the calculated deformation characteristic information of the roadway section with standard deformation characteristic information in a preset corresponding relation, and determining a deformation characteristic factor corresponding to the deformation characteristic information of the roadway section;
generating corresponding prompt information according to the determined deformation characteristic factor;
wherein, the deformation characteristic factor is a force source or a main control factor influencing the deformation of the section of the roadway.
4. The method according to claim 1, wherein the obtaining of the judgment information for judging the danger type of the profile of the roadway section according to the calculated structural deformation information of the flexible survey line further comprises:
and calculating speed change information of the roadway section according to the calculated structural deformation information of the flexible measuring line, wherein the speed change information is the deformation speed and/or the deformation acceleration of the flexible measuring line.
5. The method according to claim 4, wherein the comparing the obtained judgment information with preset danger type information and generating corresponding prompt information according to the comparison result further comprises:
comparing the calculated speed change information of the roadway section with a preset danger level interval, and determining the danger level of the roadway section according to the comparison result;
and generating corresponding prompt information according to the determined danger level.
6. The utility model provides a coal mine tunnel irregular convergence warp's early warning system which characterized in that includes:
the acquisition module is used for calculating the structural deformation information of the flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod;
the processing module is used for monitoring and obtaining judgment information for judging the dangerous type of the profile of the roadway section according to the calculated structural deformation information of the flexible measuring line;
the prompt module is used for comparing the obtained judgment information with preset danger type information and generating corresponding prompt information according to a comparison result;
wherein the flexible measuring line is formed by a plurality of rigid measuring rods in a surrounding manner;
the obtaining module specifically includes:
determining profile information of a flexible measuring line for representing the profile of the section of the roadway according to the acquired spatial position coordinates of the rigid measuring rod;
comparing the determined profile information with the initial profile information of the flexible measuring line, and calculating the structural deformation information of the flexible measuring line;
the device further comprises a coordinate module for acquiring the space position coordinate of the rigid measuring rod, and the device specifically comprises:
acquiring the current inclination angle of the rigid measuring rod according to an inclination angle sensor arranged in the middle of the rigid measuring rod;
monitoring and acquiring the sinking amount of a rigid measuring rod for representing the top plate of the roadway section in real time by using a top plate sinking amount measuring device;
and calculating the space position coordinate of the rigid measuring rod according to the thickness of the high-position stable rock stratum and the thickness of the low-position roadway top plate at the position of the roadway section, the obtained current inclination angle and the obtained sinking amount of the rigid measuring rod.
7. A storage medium on which a computer program is stored, wherein the program is executed by a processor to implement the method for warning of irregular convergence deformation of a coal mine roadway according to any one of claims 1 to 5.
8. A computer device comprising a storage medium, a processor and a computer program stored on the storage medium and operable on the processor, wherein the processor implements the method for warning of irregular convergence deformation of a coal mine tunnel according to any one of claims 1 to 5 when executing the program.
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| CN113251989B (en) * | 2021-05-25 | 2022-11-22 | 石家庄铁道大学 | Slope deformation monitoring method and device and terminal |
| CN115200540B (en) * | 2022-07-08 | 2023-07-28 | 安徽省皖北煤电集团有限责任公司 | Mine roadway deformation monitoring and early warning method and system |
| CN117780446A (en) * | 2024-02-26 | 2024-03-29 | 山东焱鑫矿用材料加工有限公司 | Safety performance monitoring method and system for coal mine support |
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| CN103321681A (en) * | 2012-12-31 | 2013-09-25 | 尤洛卡矿业安全工程股份有限公司 | Monitoring and pre-warning method and system for coal mine roadway roof collapse disaster |
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