A monitoring system and monitoring method for mine slope displacement

Abstract

The invention discloses a monitoring system and a monitoring method for mine slope displacement, relates to the technical field of mine monitoring, solves the problem that the current mine displacement monitoring method cannot effectively monitor the slope displacement situation, comprises a mine initial inspection module, a detection point setting module and a mine analysis module, the mine initial inspection module is used to analyze the mine geometry information of the mine to be tested, generate an abnormal signal of the mine to be tested, or obtain a primary detection signal or a secondary detection signal corresponding to the mine to be tested, the detection point setting module is used to set the detection parameters of the physical information monitoring points corresponding to the mine to be tested, and set the physical information monitoring points in the mine to be tested in combination with the detection parameters, the mine analysis module is used to analyze the comprehensive situation of the mine to be tested, generate a normal signal or obtain the slope displacement level corresponding to the mine to be tested, and the invention realizes effective and accurate monitoring of the mine slope displacement.

Description

Technical Field

[0001] The invention belongs to the field of mine monitoring, and relates to a slope displacement identification technology, in particular to a mine slope displacement monitoring system and a monitoring method thereof. Background Art

[0002] A mine refers to a place where underground or surface engineering activities are carried out for the purpose of mining mineral resources. It is a physical mining area for the purpose of obtaining mineral resources (such as metal ores, non-metallic ores, coal, oil, etc.). During the mining process, a mine needs to use various mining equipment and facilities to carry out mining operations, such as drilling rigs, excavators, transportation equipment, ore processing equipment, etc. These equipment and facilities are used for mining, transportation, processing and storage of ores or mineral sands. Therefore, it is very necessary to ensure the safety of the mine during collection. Among them, the mine slope displacement monitoring technology can timely detect and warn of slope displacement changes, help identify potential slope stability problems, and through continuous monitoring of slope displacement, timely safety measures can be taken to reduce the risk of accidents such as landslides and collapses, and ensure the safety of personnel and equipment;

[0003] However, the current identification of slope displacement is mostly done by setting up several GPS positioning points on the mine to be tested and using satellites to determine the changes in the corresponding GPS positioning points, without analyzing the stress on the mine to be tested and drawing the corresponding Mohr circle and failure line. This results in the inability to accurately monitor slight displacements of the mine to be tested or displacements inside the mine to be tested.

[0004] Therefore, we propose a monitoring system and method for mine slope displacement. Summary of the invention

[0005] The purpose of the present invention is to propose a method for automatically mapping the topology of an electric grid in an important power supply guaranteeing place, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A monitoring system for mine slope displacement, comprising a first acquisition module, a mine initial inspection module, a detection point setting module, a second acquisition module, a mine analysis module and a user terminal, wherein the first acquisition module is used to acquire mine geometry information of a mine to be tested within an acquisition period, and send the mine geometry information to the mine initial inspection module, the mine initial inspection module is used to analyze the mine geometry information of the mine to be tested, and if an abnormal signal of the mine to be tested is generated, it is sent to the user terminal, and if a primary detection signal or a secondary detection signal corresponding to the mine to be tested is obtained, the primary detection signal or the secondary detection signal and the corresponding minimum slope length are sent to the detection point setting module;

[0008] The detection point setting module is used to set the detection parameters of the physical information monitoring points corresponding to the mine to be tested according to the scale of the mine to be tested, and set the physical information monitoring points in the mine to be tested in combination with the detection parameters;

[0009] The second acquisition module is used to collect the mine physical information of the mine to be tested and the mine volume corresponding to the mine to be tested according to the location of the physical information monitoring point, and send the mine physical information and the mine volume to the mine analysis module. The mine analysis module is used to analyze the comprehensive situation of the mine to be tested, generate a normal signal or obtain the slope displacement level corresponding to the mine to be tested and send it to the user terminal. The user terminal is used to understand the slope condition of the mine to be tested based on the normal signal or the slope displacement level.

[0010] Furthermore, the mine geometry information includes the mine slope height and the mine slope length of the mine to be measured at different times during the acquisition period;

[0011] The mine physical information includes the measured shear stress, measured normal stress and mine soil properties corresponding to each physical information monitoring point.

[0012] Furthermore, the process of obtaining the mine slope height and the mine slope length is specifically as follows:

[0013] The top coordinate is read at the top of the mine by a GPS device, and then extended vertically downward along the top coordinate until it reaches the bottom of the mine, and the vertical projection of the top coordinate B is selected at the bottom of the mine as the first bottom coordinate, and then extended outward on the same horizontal plane of the first base coordinate until it reaches the edge of the mine slope, and the second bottom coordinate is selected at the edge of the mine slope. The height difference between the top coordinate and the first bottom coordinate is the height of the mine slope, and the horizontal distance between the first bottom coordinate and the second bottom coordinate is the length of the mine slope.

[0014] Furthermore, the initial inspection process of the mine initial inspection module is as follows:

[0015] Obtain the mine geometry information of the mine to be tested, and obtain the mine slope height and mine slope length of the mine to be tested at different times during the acquisition period;

[0016] Divide the mine slope height at the same time by the mine slope length at the same time to obtain the mine slope angle tangent value at different times in the acquisition cycle of the mine to be tested;

[0017] Obtain the mode of the tangent values ​​of the mine slope angles of the mine to be tested at different times during the collection period, use the mode as the mode of the tangent values ​​of the mine to be tested, and compare the tangent values ​​of the mine slope angles of the mine to be tested at different times during the collection period with the mode of the tangent values;

[0018] If the tangent value of the mine slope angle at any time is different from the tangent value mode, the warning value of the collection cycle is increased by one;

[0019] After the statistics are completed, the size of the warning value is recorded and the warning value is compared with the warning threshold;

[0020] If the warning value corresponding to the collection period is greater than or equal to the first warning threshold, an abnormal signal is generated;

[0021] If the warning value corresponding to the collection period is less than the first warning threshold and greater than or equal to the second warning threshold, a first-level detection signal is generated;

[0022] If the warning value corresponding to the collection period is less than the second warning threshold, a secondary detection signal is generated; wherein the value of the first warning threshold is greater than the value of the second warning threshold, and the detection strength of the first detection signal is higher than the detection strength of the second detection signal.

[0023] Furthermore, the initial inspection process of the mine initial inspection module also includes the following process:

[0024] Traverse and compare the mine slope height values ​​corresponding to all moments in the collection period, and then select the minimum value of the mine slope height corresponding to the mine to be tested as the selected slope height value. Similarly, traverse and compare the mine slope length values ​​corresponding to all moments in the collection period, and select the minimum value of the mine slope length corresponding to the mine to be tested as the selected slope length value;

[0025] The square of the selected slope height value corresponding to the mine to be tested is calculated and recorded as the square of the selected height value. The square of the selected slope length value corresponding to the mine to be tested is calculated and recorded as the square of the selected length value. The square of the selected height value is added to the square of the selected length value and then the square root is taken to obtain the minimum slope length corresponding to the mine to be tested.

[0026] Furthermore, the setting process of the detection point setting module is as follows:

[0027] Obtain the minimum slope length ZXP and the first-level detection signal or the second-level detection signal corresponding to the mine to be tested;

[0028] The detection force value JLD corresponding to the mine to be tested is calculated by the formula. The specific formula is as follows:

[0029] JLD=ZXP×A1+λ×A2, where A1 and A2 are weight coefficients with fixed values, the values ​​of A1 and A2 are both greater than 0 and A1+A2=1; λ is the force compensation component corresponding to the primary detection signal or the secondary detection signal, and the force compensation component corresponding to the primary detection signal is greater than the force compensation component corresponding to the secondary detection signal;

[0030] If the detection strength value is in the first detection interval, the detection parameters of the physical information monitoring point are: x1 physical information monitoring points are set, and the distance between the detection points is y1 meters;

[0031] If the detection strength value is in the second detection interval, the detection parameters of the physical information monitoring point are: x2 physical information monitoring points are set, and the distance between the detection points is y2 meters;

[0032] If the detection intensity value is in the third detection interval, the detection parameters of the physical information monitoring point are: x3 physical information monitoring points are set, and the distance between the detection points is y3 meters;

[0033] Among them, the first detection interval is (0, i], the second detection interval is (i, j], and the third detection interval is (j, +∞), 0<i<j, 2<x1<x2<x3, 0<y1<y2<y3.

[0034] Furthermore, the analysis process of the mine analysis module is as follows:

[0035] Acquire the mine physical information of the mine to be tested, and obtain multiple sets of real-time shear stress, real-time normal stress, mine soil quality and mine volume corresponding to the mine to be tested;

[0036] The measured shear stress JYS of the corresponding mine to be tested is obtained by adding and averaging multiple sets of real-time shear stresses. Similarly, the measured normal stress JYZ of the corresponding mine to be tested is obtained by adding and averaging multiple sets of real-time normal stresses.

[0037] The corresponding boundary stress is obtained through the mine soil and mine volume, and the stress analysis diagram corresponding to the cross section of the mine to be tested is drawn according to the boundary stress. B is the position corresponding to the top of the mountain in the inclined section, A is the position corresponding to the bottom of the mountain in the inclined section, and the position between AB is recorded as the inclined section of the mine to be tested; ZYy is the normal stress component corresponding to the Y axis, JYy is the shear stress component corresponding to the Y axis, ZYx is the normal stress component corresponding to the X axis, and JYx is the shear stress component corresponding to the X axis; Fx is the force corresponding to the X axis direction of the inclined section, and Fy is the force corresponding to the Y axis direction of the inclined section;

[0038] Let the thickness of the cross section of the mine to be tested be 1, then the area corresponding to the surface OB is OB×1=OB, similarly the area corresponding to the surface OA is OA, the area corresponding to the surface AB is AB, the signs of the shear stress and normal stress indicate the direction;

[0039] From the force analysis, we know that Fx=-JYy×OA+ZYx×OB=-JYy×OA+ZYx×OB;

[0040] For the mine to be tested, the first oblique stress YLx generated by the force Fx on the inclined section AB is:

[0041] YLx=Fx / AB=-JYy×(OA / AB)+ZYx×(OB / AB)=-JYy×sinα+ZYx×cosα;

[0042] Similarly, we can know that Fy=-JYx×OB+ZYy×OA;

[0043] For the mine to be tested, the second oblique stress YLy generated by the force Fy in the inclined section AB is:

[0044] YLy=Fy / AB=-JYx×(OB / AB)+ZYy×(OA / AB)=-JYx×cosα+ZYy×sinα.

[0045] Furthermore, the analysis process of the mine analysis module also includes:

[0046] Perform orthogonal decomposition of YLy and YLx to calculate the normal stress ZYα and shear stress JYα corresponding to the inclined section of the mine slope to be measured:

[0047] ZYα=YLx×cosα+YLy×sinα=(-JY×sinα+ZYx×cosα)×cosα+(-JY×cosα+ZYy×sinα)×sinα=ZYx×(cosα) 2 +ZYy×(sinα) 2 -2×JY×sinα×cosα=ZYx×(cosα) 2 +ZYy×[1-(cosα) 2 ]-2×JY×sinα×cosα=[(ZYx-ZYy)×cos2α / 2]+[(ZYx-ZYy) / 2]+ZYy-2×JY×sinα×cosα;

[0048] Similarly, JYα=YLx×sinα-YLy×cosα=(ZYx-ZYy)×sin2α / 2+JY×cos2α (1)

[0049] Transforming ZYα yields: ZYα-(ZYx+ZYy) / 2=(ZYx-ZYy)×cos2α / 2-JY×sin2α (2);

[0050] Square the formula (1) to get: JYα 2 = (ZYx-ZYy) × (sin2α) 2 / 4+JY 2 ×(cos2α) 2 -2(ZYx-ZYy)×sin2α / 2×JY×cos2α (3);

[0051] Squaring formula (2) yields: [ZYα-(ZYx+ZYy) / 2] 2 = (ZYx-ZYy) × (cos2α) 2 / 4+JY 2 ×(sin2α) 2 -2(ZYx-ZYy)×cos2α / 2×JY×sin2α(4);

[0052] (3) + (4) we get: [ZYα - (ZYx + ZYy) / 2] 2 +JYα 2 =[(ZYx-ZYy) / 2] 2 +JY 2 (5);

[0053] Among them, formula (5) is the Mohr circle function. Let the X-axis be the normal stress ZYα and the Y-axis be the shear stress JYα, then the corresponding Mohr circle can be drawn;

[0054] The center of the circle is (ZYx+ZYy) / 2, and the radius R=√([(ZYx-ZYy) / 2] 2 +JY 2 ):

[0055] Assume that the normal stress corresponding to the inclined section when the slope displacement occurs in the mine to be tested is ZYp, and the shear stress is JYp;

[0056] It can be seen that ZYp=OB 2 ×ZYx+OA 2 ×ZYy (6);

[0057] JYp=OA×OB×(ZYx-ZYy) (7);

[0058] Assume that the failure line expression when slope displacement occurs is:

[0059] JY=R×ZY+C, where R and C are constants;

[0060] Combining (6) and (7), we can obtain:

[0061] OA×OB×(ZYx-ZYy)=R(OB 2 ×ZYx+OA 2 ×ZYy)+C (8);

[0062] From the properties of the Mohr circle, we know that when the shear stress is maximum, the corresponding inclined section of the mine to be tested is 45° to the direction of the normal stress, that is, α=45°. At this time, OA=OB, we can get:

[0063] ZYx-ZYy=R×(ZYx+ZYy)+C (9);

[0064] Draw a perpendicular line from the center of the Mohr circle to the failure line, and then substitute the intersection point into formula (9) to obtain: ZYx-ZYy=(ZYx+ZYy)×sinβ+C;

[0065] The real-time shear stress and measured normal stress are substituted into the Mohr circle function corresponding to the mine to be tested to determine the slope displacement grade of the mine to be tested.

[0066] Furthermore, the process of determining the slope displacement level specifically includes:

[0067] If the coordinate points corresponding to the measured shear stress and the measured normal stress are located inside the Mohr circle corresponding to the mine to be tested, a normal signal is generated, and it is determined that no slope displacement will occur in the mine to be tested;

[0068] If the coordinate points corresponding to the measured shear stress and the measured normal stress are outside the Mohr circle corresponding to the mine to be tested, the measured shear stress and the measured normal stress are brought into the failure line. When the measured shear stress and the measured normal stress are below the failure line, the slope displacement level of the mine to be tested is recorded as primary displacement. When the measured shear stress and the measured normal stress are above the failure line, the slope displacement level of the mine to be tested is recorded as secondary displacement. Among them, the displacement distance of the mine to be tested corresponding to the secondary displacement is greater than the displacement distance of the mine to be tested corresponding to the primary displacement.

[0069] The present invention also provides a method for monitoring the displacement of a mine slope, the monitoring method comprising:

[0070] Step S101, collecting mine geometry information of the mine to be tested at different times;

[0071] Step S102, analyzing the mine geometry information of the mine to be tested, generating an abnormal signal, a primary detection signal or a secondary detection signal of the mine to be tested, and obtaining the minimum slope length of the mine to be tested;

[0072] Step S103, setting detection parameters of physical information monitoring points corresponding to the mine to be tested according to the scale of the mine to be tested, and setting physical information monitoring points in the mine to be tested in combination with the detection parameters;

[0073] Step S104, collecting the physical information of the mine at the location of the physical information monitoring point, and collecting the mine volume of the mine to be tested;

[0074] Step S105, analyzing the comprehensive situation of the mine to be tested, generating a normal signal or obtaining the slope displacement level corresponding to the mine to be tested.

[0075] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0076] The present invention first collects the mine geometry information of the mine to be tested within a collection period, analyzes the mine geometry information of the mine to be tested, and if an abnormal signal of the mine to be tested is obtained, sends it to the user terminal; if a primary detection signal or a secondary detection signal corresponding to the mine to be tested is obtained, the primary detection signal or the secondary detection signal and the corresponding minimum slope length are sent to a detection point setting module; the detection point setting module sets the detection parameters of the physical information monitoring points corresponding to the mine to be tested according to the scale, arranges the physical information monitoring points in combination with the detection parameters, collects the mine physical information of the mine to be tested and the mine to be tested at the location of the physical information monitoring points, and finally analyzes the comprehensive situation of the mine to be tested through the mine analysis module, generates a normal signal or obtains the slope displacement level corresponding to the mine to be tested, and the user terminal understands the situation of the mine to be tested according to the slope displacement level. The present invention realizes accurate monitoring of the slope displacement of the mine to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0078] Figure 1 It is the overall system block diagram of the present invention.

[0079] Figure 2 It is a simplified schematic diagram of the mine to be tested in the present invention.

[0080] Figure 3 This is the first stress analysis diagram of the mine to be tested in the present invention.

[0081] Figure 4 This is the second force analysis diagram of the mine to be tested in the present invention.

[0082] Figure 5 It is a schematic diagram of the Mohr circle corresponding to the mine to be tested in the present invention.

[0083] Figure 6 It is a stress analysis diagram of the mine to be tested when slope displacement occurs in the present invention.

[0084] Figure 7 It is a schematic diagram of the relative positions of the failure line and the Mohr circle in the present invention.

[0085] Figure 8 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0086] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0087] Example 1: Please refer to Figure 1-7 As shown, the technical solution provided by the present invention is: a monitoring system for mine slope displacement, including a first acquisition module, a mine initial inspection module, a detection point setting module, a second acquisition module, a database, a mine analysis module and a user terminal;

[0088] The first acquisition module is used to acquire the mine geometry information of the mine to be tested within the acquisition period, and send the mine geometry information to the mine initial inspection module, wherein: Figure 2 As shown in the figure, the mine geometric information specifically includes the mine slope height and mine slope length of the mine to be measured at different times during the acquisition period; the top coordinate B is read at the top of the mine by the GPS device, and then the top coordinate is vertically extended downward until the bottom of the mine is reached, and the vertical projection of the top coordinate B is selected at the bottom of the mine as the bottom coordinate O, and then it is extended outward on the same horizontal plane of the base coordinate O until the edge of the mine slope is reached, and another bottom coordinate A is selected at the edge of the mine slope. The height difference between the top coordinate B and the bottom coordinate O is the height of the mine slope, and the horizontal distance between the bottom coordinate O and the bottom coordinate A is the length of the mine slope.

[0089] The mine initial inspection module is used to analyze the mine geometry information of the mine to be tested. The analysis process is as follows:

[0090] Obtain the mine geometry information of the mine to be tested, and obtain the mine slope height and mine slope length of the mine to be tested at different times during the acquisition period;

[0091] Divide the mine slope height at the same time by the mine slope length at the same time to obtain the mine slope angle tangent value at different times in the acquisition cycle of the mine to be tested;

[0092] Obtain the mode of the tangent values ​​of the mine slope angles of the mine to be tested at different times during the collection period, use the mode as the mode of the tangent values ​​of the mine to be tested, and compare the tangent values ​​of the mine slope angles of the mine to be tested at different times during the collection period with the mode of the tangent values;

[0093] If the tangent value of the mine slope angle at any time is different from the tangent value mode, the warning value of the collection period is increased by one, where the value of the warning value is initially zero;

[0094] After the statistics are completed, the size of the warning value is recorded and the warning value is compared with the warning threshold;

[0095] If the warning value corresponding to the acquisition period is greater than or equal to the first warning threshold, an abnormal signal is generated and sent to the user terminal, and it is determined that the slope displacement has occurred in the mine to be tested;

[0096] If the warning value corresponding to the collection period is less than the first warning threshold and greater than or equal to the second warning threshold, a first-level detection signal is generated;

[0097] If the warning value corresponding to the collection period is less than the second warning threshold, a secondary detection signal is generated; wherein the value of the first warning threshold is greater than the value of the second warning threshold, and the detection strength of the primary detection signal is higher than the detection strength of the secondary detection signal;

[0098] Traverse and compare the mine slope height values ​​corresponding to all moments in the collection period, and then select the minimum value of the mine slope height corresponding to the mine to be tested as the selected slope height value. Similarly, traverse and compare the mine slope length values ​​corresponding to all moments in the collection period, and select the minimum value of the mine slope length corresponding to the mine to be tested as the selected slope length value;

[0099] The square of the selected slope height value corresponding to the mine to be tested is calculated and recorded as the square value of the selected height. The square of the selected slope length value corresponding to the mine to be tested is calculated and recorded as the square value of the selected length. The square value of the selected height is added to the square value of the selected length and then the square root is taken to obtain the minimum slope length corresponding to the mine to be tested.

[0100] The mine initial inspection module sends the minimum slope length corresponding to the mine to be inspected and the first-level detection signal or the second-level detection signal to the detection point setting module.

[0101] In this embodiment, the detection point setting module is used to set the detection parameters of the physical information monitoring points according to the scale of the mine to be tested. The setting process is as follows:

[0102] Obtain the minimum slope length ZXP and the first-level detection signal or the second-level detection signal corresponding to the mine to be tested;

[0103] The detection force value JLD corresponding to the mine to be tested is calculated by the formula. The specific formula is as follows:

[0104] JLD=ZXP×A1+λ×A2, where A1 and A2 are weight coefficients with fixed values, the values ​​of A1 and A2 are both greater than 0 and A1+A2=1; λ is the force compensation component corresponding to the primary detection signal or the secondary detection signal, and the force compensation component corresponding to the primary detection signal is greater than the force compensation component corresponding to the secondary detection signal;

[0105] If the detection strength value is in the first detection interval, the detection parameters of the physical information monitoring point are: x1 physical information monitoring points are set, and the distance between the detection points is y1 meters;

[0106] If the detection strength value is in the second detection interval, the detection parameters of the physical information monitoring point are: x2 physical information monitoring points are set, and the distance between the detection points is y2 meters;

[0107] If the detection intensity value is in the third detection interval, the detection parameters of the physical information monitoring point are: x3 physical information monitoring points are set, and the distance between the detection points is y3 meters;

[0108] The first detection interval is (0, i], the second detection interval is (i, j], and the third detection interval is (j, +∞), 0<i<j, 2<x1<x2<x3, 0<y1<y2<y3;

[0109] The detection point setting module sends the detection parameters corresponding to the physical information monitoring points to the second acquisition module. In practice, the physical information monitoring points are arranged in the mine to be tested according to the detection parameters.

[0110] During actual monitoring, the second acquisition module is used to collect the mine physical information of the mine to be tested and the mine volume corresponding to the mine to be tested according to the location of the physical information monitoring point, and send the mine physical information and mine volume to the mine analysis module;

[0111] It should be specifically stated that the mine physical information is the measured shear stress, measured normal stress and mine soil quality corresponding to each physical information monitoring point;

[0112] Among them, the measured shear stress, measured normal stress and mine soil quality corresponding to the physical information monitoring point, during the specific measurement, the mine soil quality of the corresponding physical information monitoring point is obtained by drilling and sampling at the corresponding position of the physical information monitoring point, and then the measured shear stress and measured normal stress of the corresponding physical information monitoring point are measured by using a strain gauge; the mine volume corresponding to the mine to be measured can be measured by a total station at multiple angles of the outer surface image of the mine to be measured, and the outer surface images at multiple angles are imported into the geological modeling software to generate the mine wireframe corresponding to the mine to be measured, and then the mine volume corresponding to the mine to be measured is calculated;

[0113] In this embodiment, the database is used to store the boundary stresses corresponding to the mines to be tested with different soil types and volumes and send them to the mine analysis module, wherein the boundary stress refers to the shear stress and normal stress corresponding to the mine to be tested under the boundary conditions. The mine to be tested under the boundary conditions will be in a state of equilibrium. When the external force changes, the mine to be tested will suffer damage such as slope displacement or even collapse.

[0114] In this embodiment, the mine analysis module is used to analyze the comprehensive situation of the mine to be tested, and the analysis process is as follows:

[0115] Acquire the mine physical information of the mine to be tested, and obtain multiple sets of real-time shear stress, real-time normal stress, mine soil quality and mine volume corresponding to the mine to be tested;

[0116] The measured shear stress JYS of the corresponding mine to be tested is obtained by adding and averaging multiple sets of real-time shear stresses. Similarly, the measured normal stress JYZ of the corresponding mine to be tested is obtained by adding and averaging multiple sets of real-time normal stresses.

[0117] See also Figure 3 and Figure 4 As shown in the figure, the corresponding boundary stress is obtained through the mine soil and mine volume, and the stress analysis diagram corresponding to the cross section of the mine to be tested is drawn according to the boundary stress:

[0118] In the figure, the right triangle formed by points AOB is the cross section, B is the position corresponding to the top of the mountain in the oblique section, A is the position corresponding to the bottom of the mountain in the oblique section, and the position between AB is recorded as the oblique section of the mine to be measured; ZYy is the normal stress component corresponding to the Y axis, JYy is the shear stress component corresponding to the Y axis, ZYx is the normal stress component corresponding to the X axis, and JYx is the shear stress component corresponding to the X axis; Fx is the force corresponding to the X axis direction of the oblique section, and Fy is the force corresponding to the Y axis direction of the oblique section;

[0119] Let the thickness of the cross section of the mine to be tested be 1, then the area corresponding to the surface OB is OB×1=OB, similarly the area corresponding to the surface OA is OA, and the area corresponding to the surface AB is AB; the signs of shear stress and normal stress indicate the direction;

[0120] From the force analysis, we know that Fx=-JYy×OA+ZYx×OB=-JYy×OA+ZYx×OB;

[0121] For the mine to be tested, the first oblique stress YLx generated by the force Fx on the inclined section AB is:

[0122] YLx=Fx / AB=-JYy×(OA / AB)+ZYx×(OB / AB)=-JYy×sinα+ZYx×cosα;

[0123] Similarly, we can know that Fy=-JYx×OB+ZYy×OA;

[0124] For the mine to be tested, the second oblique stress YLy generated by the force Fy in the inclined section AB is:

[0125] YLy=Fy / AB=-JYx×(OB / AB)+ZYy×(OA / AB)=-JYx×cosα+ZYy×sinα;

[0126] For the sake of simplicity in calculation, in this embodiment, the component of shear stress corresponding to the X-axis and the component of shear stress corresponding to the Y-axis are considered to be of the same magnitude, that is, JYx and JYy are of the same magnitude and are both JY;

[0127] Orthogonally decompose YLy and YLx to calculate the normal stress ZYα and shear stress JYα corresponding to the inclined section of the mine slope to be measured. The calculation process is as follows:

[0128] ZYα=YLx×cosα+YLy×sinα=(-JY×sinα+ZYx×cosα)×cosα+(-JY×cosα+ZYy×sinα)×sinα=ZYx×(cosα) 2 +ZYy×(sinα) 2 -2×JY×sinα×cosα=ZYx×(cosα) 2 +ZYy×[1-(cosα) 2 ]-2×JY×sinα×cosα=[(ZYx-ZYy)×cos2α / 2]+[(ZYx-ZYy) / 2]+ZYy-2×JY×sinα×cosα;

[0129] Similarly, JYα=YLx×sinα-YLy×cosα=(ZYx-ZYy)×sin2α / 2+JY×cos2α (1)

[0130] Transforming ZYα yields: ZYα-(ZYx+ZYy) / 2=(ZYx-ZYy)×cos2α / 2-JY×sin2α (2);

[0131] Square the formula (1) to get: JYα 2 = (ZYx-ZYy) × (sin2α) 2 / 4+JY 2 ×(cos2α) 2 -2(ZYx-ZYy)×sin2α / 2×JY×cos2α (3);

[0132] Squaring formula (2) yields: [ZYα-(ZYx+ZYy) / 2] 2 = (ZYx-ZYy) × (cos2α) 2 / 4+JY 2 ×(sin2α) 2 -2(ZYx-ZYy)×cos2α / 2×JY×sin2α(4);

[0133] (3) + (4) we get: [ZYα - (ZYx + ZYy) / 2] 2 +JYα 2 =[(ZYx-ZYy) / 2] 2 +JY 2 (5);

[0134] Formula (5) is the Mohr circle function. Let the X-axis be the normal stress ZYα and the Y-axis be the shear stress JYα, then the corresponding Mohr circle can be drawn;

[0135] The center of the circle is (ZYx+ZYy) / 2, and the radius R=√([(ZYx-ZYy) / 2] 2 +JY 2 ):

[0136] See also Figure 6 , assuming that the normal stress corresponding to the inclined section when the slope displacement occurs in the mine to be tested is ZYp, and the shear stress is JYp;

[0137] It can be seen that ZYp=OB 2 ×ZYx+OA 2 ×ZYy (6);

[0138] JYp=OA×OB×(ZYx-ZYy) (7);

[0139] Assume that the failure line expression when slope displacement occurs is:

[0140] JY=R×ZY+C, where R and C are constants;

[0141] Combining (6) and (7), we can obtain:

[0142] OA×OB×(ZYx-ZYy)=R(OB 2 ×ZYx+OA 2 ×ZYy)+C (8);

[0143] From the properties of the Mohr circle, we know that when the shear stress is maximum, the corresponding inclined section of the mine to be tested is 45° to the direction of the normal stress, that is, α=45°. At this time, OA=OB, we can get:

[0144] ZYx-ZYy=R×(ZYx+ZYy)+C (9);

[0145] See also Figure 7 As shown, a perpendicular line is drawn from the center of the Mohr circle to the failure line, and then the intersection point is substituted into formula (9) to obtain: ZYx-ZYy=(ZYx+ZYy)×sinβ+C;

[0146] Substitute the real-time shear stress and measured normal stress into the Mohr circle function corresponding to the mine to be tested;

[0147] If the measured shear stress and the measured normal stress are within the Mohr circle corresponding to the mine to be measured, a normal signal is generated, and it is determined that the mine to be measured will not be displaced;

[0148] If the coordinate points corresponding to the measured shear stress and measured normal stress are outside the Mohr circle corresponding to the mine to be tested, the measured shear stress and measured normal stress are brought into the failure line. If the measured shear stress and measured normal stress are below the failure line, the slope displacement level of the mine to be tested is recorded as first-level displacement, and it is determined that the mine to be tested has a probability of Z1 to have slope displacement;

[0149] If the measured shear stress and measured normal stress are above the failure line, the slope displacement level of the mine to be tested is recorded as secondary displacement, and it is determined that the mine to be tested has a probability of Z2 to cause slope displacement; where 0<Z1<Z2<1, the displacement distance of the mine to be tested corresponding to the secondary displacement is greater than the displacement distance of the mine to be tested corresponding to the primary displacement;

[0150] The mine analysis module sends the normal signal or slope displacement level to the user terminal, and the user terminal is used to receive the normal signal or slope displacement level corresponding to the mine to be tested. The user understands the slope displacement situation of the mine to be tested through the slope displacement level obtained by the user terminal.

[0151] In this application, if corresponding calculation formulas appear, the above calculation formulas are all dimensionless and take their numerical calculations. The weight coefficients, proportional coefficients and other coefficients in the formulas are set to a result value obtained by quantifying each parameter. The size of the weight coefficient and the proportional coefficient can be determined as long as it does not affect the proportional relationship between the parameter and the result value.

[0152] Example 2: Please refer to Figure 8 As shown, based on another concept of the same invention, the present invention also proposes a method for monitoring the displacement of a mine slope, the monitoring method comprising the following steps:

[0153] Step S101, collecting mine geometry information of the mine to be tested at different times;

[0154] Step S102, analyzing the mine geometry information of the mine to be tested, generating an abnormal signal, a primary detection signal or a secondary detection signal of the mine to be tested, and obtaining the minimum slope length of the mine to be tested;

[0155] Step S103, setting detection parameters of physical information monitoring points corresponding to the mine to be tested according to the scale of the mine to be tested, and setting physical information monitoring points in the mine to be tested in combination with the detection parameters;

[0156] Step S104, collecting the physical information of the mine at the location of the physical information monitoring point, and collecting the mine volume of the mine to be tested;

[0157] Step S105, analyzing the comprehensive situation of the mine to be tested, generating a normal signal or obtaining the slope displacement level corresponding to the mine to be tested.

[0158] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A monitoring system for mine slope displacement, characterized in that: It includes a first acquisition module, a mine initial inspection module, a detection point setting module, a second acquisition module, a mine analysis module and a user terminal. The first acquisition module is used to collect mine geometry information of the mine to be tested within the acquisition period, and send the mine geometry information to the mine initial inspection module. The mine initial inspection module is used to analyze the mine geometry information of the mine to be tested. If an abnormal signal of the mine to be tested is generated, it is sent to the user terminal. If a primary detection signal or a secondary detection signal corresponding to the mine to be tested is obtained, the primary detection signal or the secondary detection signal and the corresponding minimum slope length are sent to the detection point setting module. The detection point setting module is used to set the detection parameters of the physical information monitoring points corresponding to the mine to be tested according to the scale of the mine to be tested, and set the physical information monitoring points in the mine to be tested in combination with the detection parameters; The second acquisition module is used to collect the mine physical information of the mine to be tested and the mine volume corresponding to the mine to be tested according to the location of the physical information monitoring point, and send the mine physical information and the mine volume to the mine analysis module. The mine analysis module is used to analyze the comprehensive situation of the mine to be tested, generate a normal signal or obtain the slope displacement level corresponding to the mine to be tested and send it to the user terminal. The user terminal is used to understand the slope condition of the mine to be tested based on the normal signal or the slope displacement level.

2. A monitoring system for mine slope displacement according to claim 1, characterized in that: The mine geometry information includes the mine slope height and mine slope length of the mine to be measured at different times during the acquisition period; The mine physical information includes the measured shear stress, measured normal stress and mine soil properties corresponding to each physical information monitoring point.

3. A monitoring system for mine slope displacement according to claim 2, characterized in that: The specific process of obtaining the mine slope height and mine slope length is as follows: The top coordinate is read at the top of the mine by a GPS device, and then extended vertically downward along the top coordinate until it reaches the bottom of the mine, and the vertical projection of the top coordinate B is selected at the bottom of the mine as the first bottom coordinate, and then extended outward on the same horizontal plane of the first base coordinate until it reaches the edge of the mine slope, and the second bottom coordinate is selected at the edge of the mine slope. The height difference between the top coordinate and the first bottom coordinate is the height of the mine slope, and the horizontal distance between the first bottom coordinate and the second bottom coordinate is the length of the mine slope.

4. A monitoring system for mine slope displacement according to claim 2, characterized in that: The initial inspection process of the mine initial inspection module is as follows: Obtain the mine geometry information of the mine to be tested, and obtain the mine slope height and mine slope length of the mine to be tested at different times during the acquisition period; Divide the mine slope height at the same time by the mine slope length at the same time to obtain the mine slope angle tangent value at different times in the acquisition cycle of the mine to be tested; Obtain the mode of the tangent values ​​of the mine slope angles of the mine to be tested at different times during the collection period, use the mode as the mode of the tangent values ​​of the mine to be tested, and compare the tangent values ​​of the mine slope angles of the mine to be tested at different times during the collection period with the mode of the tangent values; If the tangent value of the mine slope angle at any time is different from the tangent value mode, the warning value of the collection cycle is increased by one; After the statistics are completed, the size of the warning value is recorded and the warning value is compared with the warning threshold; If the warning value corresponding to the collection period is greater than or equal to the first warning threshold, an abnormal signal is generated; If the warning value corresponding to the collection period is less than the first warning threshold and greater than or equal to the second warning threshold, a first-level detection signal is generated; If the warning value corresponding to the collection period is less than the second warning threshold, a secondary detection signal is generated; wherein the value of the first warning threshold is greater than the value of the second warning threshold, and the detection strength of the first detection signal is higher than the detection strength of the second detection signal.

5. A monitoring system for mine slope displacement according to claim 4, characterized in that: The initial inspection process of the mine initial inspection module also includes the following process: Traverse and compare the mine slope height values ​​corresponding to all moments in the collection period, and then select the minimum value of the mine slope height corresponding to the mine to be tested as the selected slope height value. Similarly, traverse and compare the mine slope length values ​​corresponding to all moments in the collection period, and select the minimum value of the mine slope length corresponding to the mine to be tested as the selected slope length value; The square of the selected slope height value corresponding to the mine to be tested is calculated and recorded as the square of the selected height value. The square of the selected slope length value corresponding to the mine to be tested is calculated and recorded as the square of the selected length value. The square of the selected height value is added to the square of the selected length value and then the square root is taken to obtain the minimum slope length corresponding to the mine to be tested.

6. A monitoring system for mine slope displacement according to claim 5, characterized in that: The setting process of the detection point setting module is as follows: Obtain the minimum slope length ZXP and the first-level detection signal or the second-level detection signal corresponding to the mine to be tested; The detection force value JLD corresponding to the mine to be tested is calculated by the formula. The specific formula is as follows: JLD=ZXP×A1+λ×A2, where A1 and A2 are weight coefficients with fixed values, the values ​​of A1 and A2 are both greater than 0 and A1+A2=1; λ is the force compensation component corresponding to the primary detection signal or the secondary detection signal, and the force compensation component corresponding to the primary detection signal is greater than the force compensation component corresponding to the secondary detection signal; If the detection strength value is in the first detection interval, the detection parameters of the physical information monitoring point are: x1 physical information monitoring points are set, and the distance between the detection points is y1 meters; If the detection strength value is in the second detection interval, the detection parameters of the physical information monitoring point are: x2 physical information monitoring points are set, and the distance between the detection points is y2 meters; If the detection intensity value is in the third detection interval, the detection parameters of the physical information monitoring point are: x3 physical information monitoring points are set, and the distance between the detection points is y3 meters; Among them, the first detection interval is (0, i], the second detection interval is (i, j], and the third detection interval is (j, +∞), 0<i<j, 2<x1<x2<x3, 0<y1<y2<y3.

7. A monitoring system for mine slope displacement according to claim 2, characterized in that: The analysis process of the mine analysis module is as follows: Acquire the mine physical information of the mine to be tested, and obtain multiple sets of real-time shear stress, real-time normal stress, mine soil quality and mine volume corresponding to the mine to be tested; The measured shear stress JYS of the corresponding mine to be tested is obtained by adding and averaging multiple sets of real-time shear stresses. Similarly, the measured normal stress JYZ of the corresponding mine to be tested is obtained by adding and averaging multiple sets of real-time normal stresses. The corresponding boundary stress is obtained through the mine soil and mine volume, and the stress analysis diagram corresponding to the cross section of the mine to be tested is drawn according to the boundary stress. B is the position corresponding to the top of the mountain in the inclined section, A is the position corresponding to the bottom of the mountain in the inclined section, and the position between AB is recorded as the inclined section of the mine to be tested; ZYy is the normal stress component corresponding to the Y axis, JYy is the shear stress component corresponding to the Y axis, ZYx is the normal stress component corresponding to the X axis, and JYx is the shear stress component corresponding to the X axis; Fx is the force corresponding to the X-axis direction of the inclined section, and Fy is the force corresponding to the Y-axis direction of the inclined section; Let the thickness of the cross section of the mine to be tested be 1, then the area corresponding to the surface OB is OB×1=OB, similarly the area corresponding to the surface OA is OA, the area corresponding to the surface AB is AB, the signs of the shear stress and normal stress indicate the direction; From the force analysis, we know that Fx=-JYy×OA+ZYx×OB=-JYy×OA+ZYx×OB; For the mine to be tested, the first oblique stress YLx generated by the force Fx on the inclined section AB is: YLx=Fx / AB=-JYy×(OA / AB)+ZYx×(OB / AB)=-JYy×sinα+ZYx×cosα; Similarly, we can know that Fy=-JYx×OB+ZYy×OA; For the mine to be tested, the second oblique stress YLy generated by the force Fy in the inclined section AB is: YLy=Fy / AB=-JYx×(OB / AB)+ZYy×(OA / AB)=-JYx×cosα+ZYy×sinα.

8. A monitoring system for mine slope displacement according to claim 7, characterized in that: The analysis process of the mine analysis module also includes: Perform orthogonal decomposition of YLy and YLx to calculate the normal stress ZYα and shear stress JYα corresponding to the inclined section of the mine slope to be measured: ZYα=YLx×cosα+YLy×sinα=(-JY×sinα+ZYx×cosα)×cosα+(-JY×cosα+ZYy×sinα)×sinα=ZYx×(cosα) 2 +ZYy×(sinα) 2 -2×JY×sinα×cosα=ZYx×(cosα) 2 +ZYy×[1-(cosα) 2 ]-2×JY×sinα×cosα=[(ZYx-ZYy)×cos2α / 2]+[(ZYx-ZYy) / 2]+ZYy-2×JY×sinα×cosα; Similarly, JYα=YLx×sinα-YLy×cosα=(ZYx-ZYy)×sin2α / 2+JY×cos2α (1) Transforming ZYα yields: ZYα-(ZYx+ZYy) / 2=(ZYx-ZYy)×cos2α / 2-JY×sin2α (2); Square the formula (1) to get: JYα 2 = (ZYx-ZYy) × (sin2α) 2 / 4+JY 2 ×(cos2α) 2 -2(ZYx-ZYy)×sin2α / 2×JY×cos2α (3); Squaring formula (2) yields: [ZYα-(ZYx+ZYy) / 2] 2 = (ZYx-ZYy) × (cos2α) 2 / 4+JY 2 ×(sin2α) 2 -2(ZYx-ZYy)×cos2α / 2×JY×sin2α(4); (3) + (4) we get: [ZYα - (ZYx + ZYy) / 2] 2 +JYα 2 =[(ZYx-ZYy) / 2] 2 +JY 2 (5); Among them, formula (5) is the Mohr circle function. Let the X-axis be the normal stress ZYα and the Y-axis be the shear stress JYα, then the corresponding Mohr circle can be drawn; The center of the circle is (ZYx+ZYy) / 2, and the radius R=√([(ZYx-ZYy) / 2] 2 +JY 2 ): Assume that the normal stress corresponding to the inclined section when the slope displacement occurs in the mine to be tested is ZYp, and the shear stress is JYp; It can be seen that ZYp=OB 2 ×ZYx+OA 2 ×ZYy (6); JYp=OA×OB×(ZYx-ZYy) (7); Assume that the failure line expression when slope displacement occurs is: JY=R×ZY+C, where R and C are constants; Combining (6) and (7), we can obtain: OA×OB×(ZYx-ZYy)=R(OB 2 ×ZYx+OA 2 ×ZYy)+C (8); From the properties of the Mohr circle, we know that when the shear stress is maximum, the corresponding inclined section of the mine to be tested is 45° to the direction of the normal stress, that is, α=45°. At this time, OA=OB, we can get: ZYx-ZYy=R×(ZYx+ZYy)+C (9); Draw a perpendicular line from the center of the Mohr circle to the failure line, and then substitute the intersection point into formula (9) to obtain: ZYx-ZYy=(ZYx+ZYy)×sinβ+C; The real-time shear stress and measured normal stress are substituted into the Mohr circle function corresponding to the mine to be tested to determine the slope displacement grade of the mine to be tested.

9. A monitoring system for mine slope displacement according to claim 8, characterized in that: The determination process of the slope displacement grade specifically includes: If the coordinate points corresponding to the measured shear stress and the measured normal stress are inside the Mohr circle corresponding to the mine to be measured, a normal signal is generated; If the coordinate points corresponding to the measured shear stress and the measured normal stress are outside the Mohr circle corresponding to the mine to be tested, the measured shear stress and the measured normal stress are brought into the failure line. When the measured shear stress and the measured normal stress are below the failure line, the slope displacement level of the mine to be tested is recorded as primary displacement. When the measured shear stress and the measured normal stress are above the failure line, the slope displacement level of the mine to be tested is recorded as secondary displacement. Among them, the displacement distance of the mine to be tested corresponding to the secondary displacement is greater than the displacement distance of the mine to be tested corresponding to the primary displacement.

10. A method for monitoring the displacement of a mine slope, characterized in that: A monitoring system for mine slope displacement according to any one of claims 1 to 9, wherein the monitoring method comprises: Step S101, collecting mine geometry information of the mine to be tested at different times; Step S102, analyzing the mine geometry information of the mine to be tested, generating an abnormal signal, a primary detection signal or a secondary detection signal of the mine to be tested, and obtaining the minimum slope length of the mine to be tested; Step S103, setting detection parameters of physical information monitoring points corresponding to the mine to be tested according to the scale of the mine to be tested, and setting physical information monitoring points in the mine to be tested in combination with the detection parameters; Step S104, collecting the physical information of the mine at the location of the physical information monitoring point, and collecting the mine volume of the mine to be tested; Step S105, analyzing the comprehensive situation of the mine to be tested, generating a normal signal or obtaining the slope displacement level corresponding to the mine to be tested.

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