A method and system for improving the monitoring accuracy of geological disasters

Abstract

The present invention relates to the technical field of geological disaster monitoring, and discloses a method and system for improving the monitoring accuracy of geological disasters, including: surveying the monitoring area, obtaining a plane monitoring map and setting a point-taking interval, selecting marked points and calculating their connecting lines, determining the marked connecting line and the straight-line coverage area; then, further densely collecting points by setting perpendicular lines and auxiliary straight lines to form displacement measurement points; during monitoring, obtaining the coordinates of each measurement point and comparing them with the initial coordinates, marking the points with offsets as abnormal points, and delimiting the abnormal detection area according to the offset direction; further dividing the abnormal area, analyzing the displacement of each sub-area, and finally determining the extreme displacement points and drawing the crack positions. This method can effectively improve the monitoring accuracy of slope displacement.

Description

Technical Field

[0001] The present invention relates to the technical field of geological disaster monitoring, and specifically provides a method and system for improving the accuracy of geological disaster monitoring. Background Art

[0002] Geological disaster monitoring technology is an important means to ensure the safety of slope areas, aiming to timely detect potential disaster hazards through accurate displacement monitoring. With the frequent occurrence of geological disasters, the requirements for monitoring accuracy and efficiency are constantly increasing. At present, there are various technical means for slope monitoring, but how to improve monitoring accuracy and coverage remains an urgent problem in the industry. Existing monitoring methods mainly include traditional manual observation, monitoring based on optical or laser measurement, and monitoring through GNSS (Global Navigation Satellite System) and ground radar technology. Although these methods can meet the basic monitoring requirements to a certain extent, they have certain limitations, mainly in terms of accuracy, coverage, and real-time performance.

[0003] In traditional manual observation, it relies on manual on-site regular inspections and data collection. Although the operation is simple, it is difficult to obtain high-precision data and there are certain safety hazards. In addition, the frequency of manual monitoring is relatively low, which may lead to missing some small-scale displacements or disaster signs, affecting the timeliness of early warning. On the other hand, when using optical or laser measurement technology, although it can provide relatively accurate distance measurement and terrain change information, this method is often limited by line of sight and weather conditions and cannot work stably in complex environments for a long time. The GNSS technology can provide relatively accurate displacement data, but due to the large influence of signals by terrain, it often cannot achieve efficient positioning in places with complex terrain such as valleys and canyons, restricting its application scope. In addition, the cost of GNSS devices themselves is relatively high, and high requirements are put forward for maintenance and management.

[0004] Currently, automated and intelligent monitoring means have become the new development direction. The technology based on multi-point monitoring has been widely used. By setting multiple monitoring points in the slope area, the monitoring accuracy and coverage can be improved. However, traditional multi-point monitoring technology generally measures all monitoring points completely and then analyzes according to the measurement data. This full-measurement method increases the time required for monitoring to a certain extent. Therefore, the present invention proposes to measure the monitoring points sequentially, and compare the monitoring points in real time during the measurement process. After detecting an abnormal monitoring point, according to the offset direction of the abnormal monitoring point, preferentially measure the monitoring points that may generate abnormalities, thereby improving the detection efficiency. Summary of the Invention

[0005] The present invention provides a method and system for improving the accuracy of geological disaster monitoring, which helps to solve the problems mentioned in the above background art.

[0006] The present invention provides the following technical solution: A method for improving the monitoring accuracy of geological disasters, including:

[0007] Denote the slope area for geological disaster monitoring as the monitoring area;

[0008] Densely set displacement measurement points within the monitoring area;

[0009] Set displacement reference points outside the monitoring area;

[0010] Monitor the displacement measurement points to determine whether displacement occurs in the monitoring area;

[0011] The step of densely setting displacement measurement points within the monitoring area includes:

[0012] Use a surveying and mapping module to survey the monitoring area, obtain a planar top view of the detection area, and denote it as the planar monitoring map;

[0013] Set the point-taking interval distance as A;

[0014] Obtain a marked point every distance A on the image edge of the planar monitoring map;

[0015] Select a marked point each time on the image edge of the planar monitoring map, and connect the marked point with other marked points pairwise to form connecting lines;

[0016] Traverse all marked points until each marked point is selected once;

[0017] Obtain the lengths of all existing connecting lines and compare them;

[0018] Select the connecting line with the longest length among them as the marked connecting line.

[0019] Optionally, the step of densely setting displacement measurement points within the monitoring area further includes:

[0020] On the planar monitoring map, starting from the marked connecting line, draw a straight line parallel to the marked connecting line every distance A on both sides of the marked connecting line, and denote it as the marked straight line;

[0021] After drawing each marked straight line:

[0022] Obtain the distance between each marked straight line and the marked connecting line and compare them;

[0023] Obtain the marked straight lines with the farthest distance from the marked straight line on both sides of the marked connecting line respectively, and denote the two obtained marked straight lines as the distal marked straight lines;

[0024] Obtain the area between two distal marked lines, denoted as the marked line coverage area;

[0025] When the marked line coverage area completely covers the plane monitoring map, stop making marked lines.

[0026] Optionally, the densely setting displacement measurement points in the monitoring area further includes:

[0027] Make a line perpendicular to the marked connection line and passing through the midpoint of the marked connection line, denoted as the marked perpendicular line;

[0028] On the plane monitoring map, starting from the marked perpendicular line, make a line parallel to the marked perpendicular line every distance A on both sides of the marked perpendicular line, denoted as the auxiliary line;

[0029] After making each auxiliary line:

[0030] Obtain the distance between each auxiliary line and the marked perpendicular line, and make a comparison;

[0031] Obtain the auxiliary lines with the farthest distance from the auxiliary line on both sides of the marked perpendicular line respectively, and denote the two obtained auxiliary lines as the distal auxiliary lines;

[0032] Obtain the area between the two distal auxiliary lines, denoted as the auxiliary line coverage area;

[0033] When the auxiliary line coverage area completely covers the plane monitoring map, stop making auxiliary lines.

[0034] Optionally, the densely setting displacement measurement points in the monitoring area further includes:

[0035] Obtain all the intersection points formed by the marked lines and the auxiliary lines, denoted as the reference intersection points;

[0036] Obtain the reference intersection points located within the plane monitoring map, denoted as the selected reference intersection points;

[0037] According to the positions of the selected reference intersection points in the plane monitoring map, correspondingly obtain the positions of the selected reference intersection points in the monitoring area, and denote the positions of the selected intersection points in the monitoring area as the acquisition points;

[0038] Take each acquisition point as a displacement measurement point.

[0039] Optionally, the monitoring of the displacement measurement points to determine whether there is displacement in the monitoring area includes:

[0040] In the plane monitoring map, make a line tangent to the edge of the plane monitoring map and located below the plane monitoring map, denoted as the reference horizontal line;

[0041] In the planar monitoring map, the vertical distance between each acquisition point and the reference horizontal line is obtained respectively, and this distance is denoted as the reference distance of the acquisition point;

[0042] According to the reference distance of each acquisition point, the acquisition points are numbered in descending order of the reference distance;

[0043] If there are acquisition points with the same reference distance, they are numbered sequentially in the numbering direction;

[0044] The so-called numbering direction is specifically:

[0045] Two straight lines perpendicular to the reference horizontal line and tangent to the edge of the planar monitoring map are made. Arbitrarily take one of them as the first tangent line and the other line as the second tangent line;

[0046] The intersection points of the first tangent line and the second tangent line with the reference horizontal line are obtained respectively, and are denoted as the first intersection point and the second intersection point respectively;

[0047] The direction from the first intersection point to the second intersection point is denoted as the numbering direction;

[0048] After completing the numbering of the acquisition points, the displacement measurement points corresponding to each acquisition point are obtained respectively, and the number of each acquisition point is used as the number of its corresponding displacement measurement point.

[0049] Optionally, the monitoring of the displacement measurement points to determine whether displacement occurs in the monitoring area includes:

[0050] A space rectangular coordinate system is established with the displacement reference point as the origin, and the X-axis and Y-axis of this space rectangular coordinate system are located on the same horizontal plane;

[0051] After completing the setting of the displacement measurement points in the monitoring area, the coordinates of each displacement measurement point in the space rectangular coordinate system are recorded respectively, and are denoted as the initial coordinates of each displacement measurement point;

[0052] When it is necessary to collect the monitoring data of geological disasters in the monitoring area:

[0053] In the order of the numbers of the displacement measurement points, the coordinates of each displacement measurement point at the current moment in the space rectangular coordinate system are obtained successively, and are denoted as the current coordinates of the displacement measurement point;

[0054] For each obtained current coordinate of a displacement measurement point, compare the current coordinate of this displacement measurement point with its initial coordinate;

[0055] If the current coordinate of this displacement measurement point is the same as the initial coordinate, then in the order of the numbers, obtain the current coordinate of the displacement measurement point with the next number;

[0056] If the current coordinates of the displacement measurement point are different from the initial coordinates, mark the displacement measurement point as an abnormal measurement point;

[0057] For an abnormal measurement point, use the direction from its initial coordinates to the current coordinates as the offset direction of the abnormal measurement point.

[0058] Optionally, the monitoring of the displacement measurement point to determine whether displacement occurs in the monitoring area further includes:

[0059] Obtain the acquisition point corresponding to the abnormal measurement point in the plane detection map, denoted as the abnormal acquisition point;

[0060] Use the offset direction of the abnormal measurement point as the offset direction of the abnormal acquisition point;

[0061] Draw a straight line perpendicular to the offset direction of the abnormal acquisition point through the abnormal acquisition point, denoted as the abnormal reference line;

[0062] Set the distance interval for delimiting the abnormal detection area, denoted as Z;

[0063] In the plane monitoring map, draw a straight line parallel to the abnormal reference line on both sides of the abnormal reference line, and make the distance between the straight line and the abnormal reference line equal to Z respectively. Denote the two drawn straight lines as the abnormal delimiting lines;

[0064] Obtain the area enclosed by the two abnormal delimiting lines and the edge line of the plane monitoring map on the plane monitoring map, and denote this area as the abnormal detection area;

[0065] Obtain all the acquisition points within the abnormal detection area, and obtain the displacement measurement point corresponding to each acquisition point, denoted as the marked measurement point;

[0066] Respectively determine whether the marked measurement point has obtained the current coordinates;

[0067] If the marked measurement point has obtained the current coordinates, delete the marked measurement point;

[0068] Otherwise, retain the marked measurement point.

[0069] Optionally, the monitoring of the displacement measurement point to determine whether displacement occurs in the monitoring area further includes:

[0070] Set the division quantity value for specifying the number of sub-abnormal areas, denoted as D;

[0071] Intercept the part of the abnormal reference line within the abnormal detection area, and denote this line segment as the division line segment;

[0072] On the division line segment, set a division point at every certain distance so that all existing division points divide the division line segment into D equal parts;

[0073] Respectively pass through each division point and draw a perpendicular line perpendicular to the abnormal reference line, and denote it as the division perpendicular line;

[0074] The abnormal detection area is divided into D areas by the division perpendicular lines, and each area is used as a sub-abnormal area;

[0075] Obtain the sub-abnormal area where the abnormal acquisition point is located, and denote it as the initial sub-abnormal area;

[0076] Respectively obtain the center points of each sub-area, and denote them as the area centers of the sub-abnormal areas;

[0077] Respectively obtain the distances between the area centers of each sub-abnormal area and the area center of the initial sub-abnormal area, and denote them as the area distances;

[0078] Optionally select one side on both sides of the offset direction of the abnormal acquisition point as the first side, and denote the other side as the second side;

[0079] For the other sub-abnormal areas except the initial sub-abnormal area, number them in ascending order according to the area distances of the sub-abnormal areas. For two sub-abnormal areas with equal area distances, preferentially number the sub-abnormal areas located on the first side;

[0080] Obtain a direction perpendicular to the offset direction, and denote it as the marking direction;

[0081] Within each sub-abnormal area, sequentially traverse the marking measurement points within the sub-abnormal area in the order of the offset direction and the marking direction, and number the marking measurement points within the sub-abnormal area in the traversal order, denoted as the sub-abnormal area measurement numbers;

[0082] Monitor the displacement measurement points according to the numbers of the sub-abnormal areas and the sub-abnormal area measurement numbers within each sub-abnormal area.

[0083] Optionally, the monitoring of the displacement measurement points according to the numbers of the sub-abnormal areas and the sub-abnormal area measurement numbers within each sub-abnormal area includes:

[0084] Start from the initial sub-abnormal area and sequentially select each sub-abnormal area according to the number order of the other sub-abnormal areas;

[0085] When a sub-area is selected, sequentially select each marking measurement point according to the sub-abnormal area measurement number order of the marking measurement points within the sub-area;

[0086] When a marking measurement point is selected, obtain the displacement measurement point corresponding to the marking measurement point within the monitoring area, and obtain the coordinates of the displacement measurement point in the space rectangular coordinate system, and compare them with the initial coordinates of the displacement measurement point to determine whether the coordinates are the same;

[0087] If the coordinates are the same, no processing is performed;

[0088] If the coordinates are different, obtain the distance between the current coordinate and the initial coordinate, and record it as the offset distance of the displacement measurement point;

[0089] Obtain the offset distances of the displacement measurement points corresponding to each marked measurement point in the abnormal detection area in sequence;

[0090] In each sub - abnormal detection area, compare the offset distances of the displacement measurement points corresponding to each marked measurement point, and select the displacement measurement point with the largest offset distance, which is recorded as the extreme displacement point;

[0091] Connect each extreme displacement point in sequence, and use the formed connecting line as the location of the crack.

[0092] A system for implementing the method for improving the accuracy of geological disaster monitoring includes:

[0093] Displacement measurement point module: used to set displacement measurement points in the monitoring area;

[0094] Surveying and mapping module: used to conduct surveying and mapping on the monitoring area to obtain a plane monitoring map of the detection area;

[0095] Grid division module: used to divide grids on the plane monitoring map and obtain collection point positions according to the divided grids;

[0096] Numbering module: used to number the collection point positions, sub - abnormal areas, and marked measurement points;

[0097] Coordinate acquisition module: used to establish a spatial rectangular coordinate system in the monitoring area and obtain the coordinates of each displacement measurement point;

[0098] Area division module: used to divide sub - abnormal areas within the abnormal detection area.

[0099] The present invention has the following beneficial effects:

[0100] 1. By densely setting displacement measurement points, the spatial coverage and measurement accuracy in the monitoring area can be improved; by reasonably arranging displacement measurement points, it can ensure effective monitoring of every part of the monitoring area and avoid missing potential disaster - risk areas; this high - density point - setting method can provide more detailed displacement data, which helps to detect minor geological changes, give early warnings, and prevent disasters from occurring; in addition, this method makes the real - time monitoring of the slope area more accurate. Especially when there are complex terrains and hidden displacements, it can quickly capture relevant signals, thus ensuring the sensitivity and response speed of the monitoring system; this layout can also avoid misjudgments caused by deviations of single measurement points and enhance the anti - interference ability of the system.

[0101] 2. By setting displacement reference points outside the monitoring area, it is possible to provide a benchmark and comparison for the monitoring data. As an external standard, the reference points can help determine the actual occurrence of displacements within the monitoring area, avoiding interference from factors such as terrain and climate. The setting of reference points helps to distinguish local displacements and widespread changes, ensuring the accuracy of the monitoring data. With the help of reference points, the system can compare the changes inside and outside the area in real time and identify potential hazards. The introduction of reference points helps to improve the consistency of the data, avoiding data deviations caused by differences in measurement environments. By comparing with the reference points, anomalies at the monitoring points can be detected in a timely manner, quickly locating the problem.

[0102] 3. By obtaining a planar monitoring map through the surveying and mapping module, it provides intuitive map support for the layout of displacement measurement points. The planar monitoring map can help monitoring personnel understand the spatial distribution and boundaries of the monitoring area, providing a clearer overall view. This map provides an important basis for subsequent point layout. When using the planar map for point layout design, the location of the measurement points can be accurately selected to ensure that the measurement points evenly cover the entire monitoring area. The planar map can effectively improve the measurement accuracy, reduce the manual point layout error, and improve the measurement efficiency.

[0103] 4. By numbering the displacement measurement points, it helps to achieve precise monitoring and data management. The numbers can clearly identify each measurement point, facilitating quick positioning during data collection, analysis, and subsequent tracking. Through numbering, the order and measurement process of the measurement points can also be clarified, reducing chaos and omissions in data collection. This numbering system ensures that the data of each measurement point can be separately recorded and analyzed, improving the traceability of the data.

[0104] 5. By immediately delimiting the anomaly detection area according to the deviation direction when an abnormal collection point is first discovered, it is possible to effectively focus on the potential risk area, enhancing the pertinence and precision of the monitoring. The deviation direction of the abnormal collection point may be the direction of crack opening. By delimiting the anomaly detection area according to this direction, the delimited anomaly detection area can cover the crack area with the highest probability, thereby quickly locating the area where the disaster occurs. This method can avoid unnecessary extensive monitoring, saving resources and reducing interference. By delimiting the anomaly detection area according to the deviation direction, the sensitivity of anomaly detection can be improved, making the system respond more quickly and accurately to geological changes, thus ensuring the early detection and timely handling of disasters.

[0105] 6. By defining the abnormal detection area, it is possible to help concentrate resources for high-density monitoring of specific areas where displacement may occur, thereby improving the early detection of disasters; this method effectively avoids unnecessary monitoring of the entire area, thus saving monitoring costs; by defining the abnormal detection area, the system can prioritize the key monitoring of the area where abnormalities occur, improving the monitoring efficiency; centralized monitoring within the abnormal detection area can enhance the effectiveness and reliability of data; the definition of the abnormal area can also help monitoring personnel quickly locate the core area where the disaster occurs, shorten the emergency response time, and take preventive measures in a timely manner; by setting the abnormal detection area, the system can achieve higher-precision monitoring and data analysis, providing support for disaster warning and decision-making.

[0106] 7. By detecting sub-abnormal areas in sequence from the initial sub-abnormal area to both sides from near to far, it is possible to ensure that the area closest to the abnormal source is given priority attention, so that potential disaster development trends can be identified and responded to more timely and effectively; through this method, the monitoring system can quickly capture the area most likely to experience displacement, discover and locate risk points in advance, thereby improving the accuracy of disaster warning and the timeliness of response; in addition, this detection sequence can optimize the allocation of monitoring resources, avoid premature detection of distant areas, ensure that limited resources are concentrated in high-risk areas, and contribute to more efficient completion of the monitoring task.

[0107] 8. By selecting the extreme displacement points to determine the location of the crack, it is possible to identify the key area where the disaster occurs with the highest probability and quickly locate the hazard source; the extreme displacement points, as the most significant displacement indicators, can help monitoring personnel confirm the outbreak point and propagation path of the disaster; this method helps to judge the specific direction and scale of the crack and further analyze the development trend of the disaster; the data analysis in the process of selecting the extreme displacement points can provide higher accuracy for disaster warning and avoid misjudgment; through this method, the monitoring system can timely detect the initial signs of geological disasters and provide a basis for the activation of the warning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0108] Figure 1 Schematic diagram of the marked connecting lines of the present invention.

[0109] Figure 2 Schematic diagram of the abnormal reference line of the present invention.

[0110] Figure 3 Schematic diagram of the abnormal detection area of the present invention.

[0111] Figure 4 Schematic diagram of the dividing perpendicular line of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0112] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0113] Embodiment 1, a method for improving the monitoring accuracy of geological disasters, including:

[0114] Denote the slope area for geological disaster monitoring as the monitoring area;

[0115] Densely set displacement measurement points within the monitoring area; By densely setting displacement measurement points, the spatial coverage and measurement accuracy within the monitoring area can be improved; By reasonably arranging the displacement measurement points, it can ensure effective monitoring of every part of the monitoring area and avoid missing potential disaster risk areas; This high-density point layout method can provide more detailed displacement data, help detect minor geological changes, give early warnings in a timely manner, and prevent disasters from occurring; In addition, this method makes the real-time monitoring of the slope area more accurate. Especially when there are complex terrains and concealed displacements, it can quickly capture relevant signals, thus ensuring the sensitivity and response speed of the monitoring system; This layout can also avoid misjudgments caused by deviations in a single measurement point and enhance the anti-interference ability of the system.

[0116] Set displacement reference points outside the monitoring area; By setting displacement reference points outside the monitoring area, it can provide a reference and comparison for the monitoring data; The reference point, as an external standard, can help judge the actual occurrence of displacements within the monitoring area and avoid being interfered by factors such as terrain and climate; The setting of the reference point helps to distinguish local displacements and widespread changes, ensuring the accuracy of the monitoring data; With the help of the reference point, the system can compare the changes inside and outside the area in real time and identify potential hazards; The introduction of the reference point helps to improve the consistency of the data and avoid data deviations caused by differences in the measurement environment; By comparing with the reference point, abnormal monitoring points can be found in a timely manner and the problem can be quickly located.

[0117] Monitor the displacement measurement points to judge whether displacements occur in the monitoring area;

[0118] The densely setting displacement measurement points within the monitoring area includes:

[0119] Refer to Figure 1, use the surveying and mapping module to survey the monitoring area, obtain the plane top view of the detection area, and record it as the plane monitoring map; obtaining the plane monitoring map through the surveying and mapping module provides intuitive map support for the layout of displacement measurement points; the plane monitoring map can help monitoring personnel understand the spatial distribution and boundaries of the monitoring area, providing a clearer global view; this map provides an important basis for subsequent point layout; when using the plane map for point layout design, the position of the measurement points can be accurately selected to ensure that the measurement points evenly cover the entire monitoring area; the plane map can effectively improve the measurement accuracy, reduce the manual point layout error, and improve the measurement efficiency.

[0120] Set the point-taking interval distance and record it as A;

[0121] On the image edge of the plane monitoring map, obtain a marked point every distance A;

[0122] On the image edge of the plane monitoring map, select one marked point each time, and connect this marked point with other marked points pairwise to form connection lines;

[0123] Traverse all the marked points until each marked point is selected once;

[0124] Obtain the lengths of all existing connection lines and compare them;

[0125] Refer to Figure 1 , select the connection line with the longest length among them and use it as the marked connection line.

[0126] The dense setting of displacement measurement points in the monitoring area further includes:

[0127] On the plane monitoring map, starting from the marked connection line, draw a straight line parallel to the marked connection line every distance A on both sides of the marked connection line, and record it as the marked straight line;

[0128] After drawing each marked straight line:

[0129] Obtain the distance between each marked straight line and the marked connection line and compare them;

[0130] Obtain the marked straight lines with the farthest distance from the marked straight line on both sides of the marked connection line respectively, and record the two obtained marked straight lines as the distal marked straight lines;

[0131] Obtain the area between the two distal marked straight lines and record it as the marked straight line coverage area;

[0132] When the marked straight line coverage area completely covers the plane monitoring map, stop drawing the marked straight line.

[0133] The dense setting of displacement measurement points in the monitoring area further includes:

[0134] Refer toFigure 1 , draw a straight line perpendicular to the marked connecting line and passing through the midpoint of the marked connecting line, and denote it as the marked perpendicular line;

[0135] On the plane monitoring map, starting from the marked perpendicular line, draw a straight line parallel to the marked perpendicular line every distance A on both sides of the marked perpendicular line, and denote it as the auxiliary straight line;

[0136] After drawing each auxiliary straight line:

[0137] Obtain the distance between each auxiliary straight line and the marked perpendicular line and compare them;

[0138] Obtain the auxiliary straight lines that are the farthest from the marked perpendicular line on both sides of the marked perpendicular line respectively, and denote the two obtained auxiliary straight lines as the distal auxiliary straight lines;

[0139] Obtain the area between the two distal auxiliary straight lines and denote it as the auxiliary straight line coverage area;

[0140] When the auxiliary straight line coverage area completely covers the plane monitoring map, stop drawing the auxiliary straight lines.

[0141] The densely arranging displacement measurement points in the monitoring area further includes:

[0142] Obtain all the intersection points formed by the marked straight lines and the auxiliary straight lines, and denote them as the reference intersection points;

[0143] Obtain the reference intersection points located within the plane monitoring map and denote them as the selected reference intersection points;

[0144] According to the positions of the selected reference intersection points in the plane monitoring map, correspondingly obtain the positions of the selected reference intersection points in the monitoring area, and denote the positions of the selected intersection points in the monitoring area as the acquisition points;

[0145] Take each acquisition point as a displacement measurement point.

[0146] The monitoring of the displacement measurement points to determine whether there is displacement in the monitoring area includes:

[0147] Refer to Figure 1 , in the plane monitoring map, draw a straight line tangent to the edge of the plane monitoring map and located below the plane monitoring map, and denote it as the reference horizontal line;

[0148] In the plane monitoring map, respectively obtain the vertical distance between each acquisition point and the reference horizontal line, and denote this distance as the reference distance of the acquisition point;

[0149] According to the reference distances of each acquisition point, number the acquisition points in descending order of the reference distances from long to short;

[0150] If there are acquisition points with the same reference distance, number them sequentially in the numbering direction;

[0151] The numbering direction is specifically as follows:

[0152] Refer to Figure 1 , draw two lines perpendicular to the reference horizontal line and tangent to the edge of the plane monitoring map. Arbitrarily select one of them and mark it as the first tangent line, and mark the other line as the second tangent line;

[0153] Respectively obtain the intersection points of the first tangent line and the second tangent line with the reference horizontal line, and mark them as the first intersection point and the second intersection point respectively;

[0154] Mark the direction from the first intersection point to the second intersection point as the numbering direction;

[0155] After completing the numbering of the acquisition points, respectively obtain the displacement measurement points corresponding to each acquisition point, and use the number of each acquisition point as the number of its corresponding displacement measurement point. By numbering the displacement measurement points, it helps to achieve precise monitoring and data management; the numbering can clearly identify each measurement point, facilitating quick positioning in data collection, analysis, and subsequent tracking; through numbering, the order and measurement process of the measurement points can also be clarified, reducing confusion and omissions in data collection; this numbering system ensures that the data of each measurement point can be recorded and analyzed separately, improving the traceability of the data.

[0156] Monitoring the displacement measurement points to determine whether displacement occurs in the monitoring area includes:

[0157] Establish a spatial rectangular coordinate system with the displacement reference point as the origin, and make the X-axis and Y-axis of this spatial rectangular coordinate system lie on the same horizontal plane;

[0158] After completing the setting of the displacement measurement points in the monitoring area, respectively record the coordinates of each displacement measurement point in the spatial rectangular coordinate system, and mark them as the initial coordinates of each displacement measurement point;

[0159] When it is necessary to collect monitoring data of geological disasters in the monitoring area:

[0160] According to the numbering order of the displacement measurement points, sequentially obtain the coordinates of each displacement measurement point at the current moment in the spatial rectangular coordinate system, and mark them as the current coordinates of the displacement measurement point;

[0161] For each obtained current coordinate of a displacement measurement point, compare the current coordinate of this displacement measurement point with its initial coordinate;

[0162] If the current coordinate of this displacement measurement point is the same as the initial coordinate, then according to the numbering order, obtain the current coordinate of the displacement measurement point with the next number;

[0163] If the current coordinates of the displacement measurement point are different from the initial coordinates, mark the displacement measurement point as an abnormal measurement point;

[0164] For an abnormal measurement point, use the direction from its initial coordinates to the current coordinates as the offset direction of the abnormal measurement point.

[0165] The monitoring of the displacement measurement points to determine whether displacement occurs in the monitoring area further includes:

[0166] Refer to Figure 2 , obtain the acquisition point corresponding to the abnormal measurement point in the plane detection map, denoted as the abnormal acquisition point; by immediately delimiting the abnormal detection area according to the offset direction when the abnormal acquisition point is first discovered, it is possible to effectively focus on the potential risk area, improving the pertinence and accuracy of the monitoring; the offset direction of the abnormal acquisition point may be the direction of crack cracking, and delimiting the abnormal detection area according to this direction can make the delimited abnormal detection area cover the crack area with the highest probability, thereby quickly positioning the area where the disaster occurs; this method can avoid unnecessary extensive monitoring, save resources and reduce interference, and by delimiting the abnormal detection area according to the offset direction, the sensitivity of the abnormal detection can be improved, making the system respond more quickly and accurately to geological changes, thus ensuring the early detection and timely handling of disasters.

[0167] Use the offset direction of the abnormal measurement point as the offset direction of the abnormal acquisition point;

[0168] Pass through the abnormal acquisition point and draw a straight line perpendicular to the offset direction of the abnormal acquisition point, denoted as the abnormal reference line;

[0169] Set the distance interval for delimiting the abnormal detection area, denoted as Z;

[0170] In the plane monitoring map, draw a straight line parallel to the abnormal reference line on both sides of the abnormal reference line respectively, and make the distance between this straight line and the abnormal reference line equal to Z, and denote the two drawn straight lines as the abnormal delimiting lines;

[0171] Refer to Figure 3, obtain the area enclosed by the two anomaly dividing lines and the edge line of the plane monitoring map on the plane monitoring map, and record the area as the anomaly detection area; by demarcating the anomaly detection area, it can help concentrate resources to conduct high-density monitoring of specific areas where displacement may occur, thereby improving the early detection of disasters; this method effectively avoids unnecessary monitoring of the entire area, thereby saving monitoring costs; by demarcating the anomaly detection area, the system can give priority to monitoring areas where anomalies occur, thereby improving monitoring efficiency; centralized monitoring within the anomaly detection area can improve the validity and reliability of the data; the demarcation of the anomaly area can also help monitoring personnel quickly locate the core area where the disaster occurs, shorten the emergency response time, and take preventive measures in a timely manner; by setting up the anomaly detection area, the system can achieve higher-precision monitoring and data analysis, and provide support for disaster warning and decision-making.

[0172] Obtain all the acquisition points within the anomaly detection area, and obtain the displacement measurement point corresponding to each acquisition point, which is recorded as a marked measurement point;

[0173] Determine whether the marked measurement point has obtained the current coordinates;

[0174] If the current coordinates of the marked measurement point are obtained, the marked measurement point will be deleted;

[0175] Otherwise, keep the marked measurement point.

[0176] The monitoring of the displacement measurement points and determining whether displacement occurs in the monitoring area further includes:

[0177] Set the number of divisions used to specify the number of sub-anomaly regions, denoted as D;

[0178] Intercept the part of the abnormal reference straight line that is within the abnormal detection area, and record the segment as a dividing segment;

[0179] On the dividing line segment, set a dividing point at a certain distance, so that all the existing dividing points divide the dividing line segment into D equal parts;

[0180] Reference Figure 4 , draw a perpendicular line through each dividing point to the abnormal reference line, and record it as the dividing perpendicular line;

[0181] The anomaly detection area is divided into D regions by vertical lines, and each region is regarded as a sub-anomaly region;

[0182] Obtain the sub-abnormal area where the abnormal collection point is located, and record it as the initial sub-abnormal area;

[0183] Obtain the center point of each sub-region respectively and record it as the regional center of the sub-abnormal region;

[0184] Obtain the distance between the regional center of each sub-abnormal area and the regional center of the initial sub-abnormal area, and denote it as the regional distance;

[0185] Arbitrarily select one side on both sides of the offset direction of the abnormal acquisition point and denote it as the first side, and denote the other side as the second side;

[0186] For other sub-abnormal areas except the initial sub-abnormal area, number them in ascending order according to the regional distance of the sub-abnormal area. For two sub-abnormal areas with equal regional distances, preferentially number the sub-abnormal area located on the first side; by detecting the sub-abnormal areas from the initial sub-abnormal area to both sides in order from near to far, it is possible to ensure that the area closest to the abnormal source is preferentially concerned, so that the potential disaster development trend can be identified and responded to more timely and effectively; through this method, the monitoring system can quickly capture the area most likely to undergo displacement, discover and locate the risk points in advance, thereby improving the accuracy of disaster warning and the timeliness of response; in addition, this detection order can optimize the allocation of monitoring resources, avoid detecting distant areas prematurely, ensure that limited resources are concentrated in high-risk areas, and contribute to more efficiently completing the monitoring task.

[0187] Obtain a direction perpendicular to the offset direction and denote it as the marking direction;

[0188] Within each sub-abnormal area, traverse the marking measurement points in the sub-abnormal area in the order of the offset direction and the marking direction, and number the marking measurement points in the sub-abnormal area according to the traversal order, denoted as the sub-abnormal area measurement number;

[0189] Monitor the displacement measurement points according to the number of the sub-abnormal area and the sub-abnormal area measurement number within each sub-abnormal area.

[0190] The monitoring of the displacement measurement points according to the number of the sub-abnormal area and the sub-abnormal area measurement number within each sub-abnormal area includes:

[0191] Start from the initial sub-abnormal area and sequentially select each sub-abnormal area according to the number order of other sub-abnormal areas;

[0192] When a sub-area is selected, sequentially select each marking measurement point according to the sub-abnormal area measurement number order of the marking measurement points in the sub-area;

[0193] When a marking measurement point is selected, obtain the corresponding displacement measurement point of the marking measurement point in the monitoring area, and obtain the coordinates of the displacement measurement point in the space rectangular coordinate system, and compare them with the initial coordinates of the displacement measurement point to determine whether the coordinates are the same;

[0194] If the coordinates are the same, no processing is performed;

[0195] If the coordinates are different, obtain the distance between the current coordinate and the initial coordinate, and record it as the offset distance of the displacement measurement point;

[0196] Successively obtain the offset distances of the displacement measurement points corresponding to each marked measurement point within the abnormal detection area;

[0197] Within each sub-abnormal detection area, compare the offset distances of the displacement measurement points corresponding to each marked measurement point, and select the displacement measurement point with the largest offset distance, which is recorded as the extreme displacement point;

[0198] Connect each extreme displacement point in sequence, and take the formed connecting line as the location where the crack is located. By selecting the extreme displacement point to determine the location of the crack, it is possible to identify the key area where the disaster occurs with the highest probability and quickly locate the hazard source; the extreme displacement point, as the most significant displacement index, can help the monitoring personnel confirm the outbreak point and propagation path of the disaster; this method helps to judge the specific trend and scale of the crack and further analyze the development trend of the disaster; the data analysis in the process of selecting the extreme displacement point can provide higher accuracy for disaster warning and avoid misjudgment; through this method, the monitoring system can timely detect the initial signs of geological disasters and provide a basis for the activation of the warning mechanism.

[0199] Embodiment 2, A system for implementing the method for improving the monitoring accuracy of geological disasters, including:

[0200] Displacement measurement point module: used to set displacement measurement points within the monitoring area;

[0201] Surveying and mapping module: used to conduct surveying and mapping on the monitoring area to obtain the plane monitoring map of the detection area;

[0202] Grid division module: used to divide grids on the plane monitoring map and obtain the collection point positions according to the divided grids;

[0203] Numbering module: used to number the collection point positions, sub-abnormal areas and marked measurement points;

[0204] Coordinate acquisition module: used to establish a spatial rectangular coordinate system within the monitoring area and obtain the coordinates of each displacement measurement point;

[0205] Area division module: used to divide sub-abnormal areas within the abnormal detection area.

[0206] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0207] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for improving the accuracy of geological disaster monitoring, characterized in that: include: The slope area where geological disaster monitoring is carried out shall be recorded as the monitoring area; Displacement measurement points are densely set up in the monitoring area and the collection points are marked; The dense arrangement of displacement measurement points within the monitoring area includes: Use the surveying and mapping module to survey the monitoring area and obtain a plan view of the detection area, which is recorded as a plan monitoring map; Set the distance between the points to be taken as A; Obtain a marking point at every distance A on the edge of the image of the plane monitoring map; Select one marking point on the edge of the plane monitoring image each time, and connect the marking point with other marking points in pairs to form a connecting line; Traverse all the marked points until each marked point is selected once; Get the lengths of all existing connecting lines and compare them; Select the longest connecting line and use it as the marking connecting line; Set up displacement reference points outside the monitoring area; Monitor the displacement measurement points to determine whether displacement occurs in the monitoring area; When displacement is detected, the abnormal measurement point is marked; Obtain the collection point corresponding to the abnormal measurement point in the plane detection map, and record it as the abnormal collection point; The offset direction of the abnormal measurement point is used as the offset direction of the abnormal acquisition point; Draw a straight line through the abnormal acquisition point, perpendicular to the offset direction of the abnormal acquisition point, and record it as the abnormal reference line; Set the distance interval used to demarcate the anomaly detection area, denoted as Z; In the plane monitoring diagram, draw a straight line parallel to the abnormal reference line on both sides of the abnormal reference line, and make the distance between the straight line and the abnormal reference line equal to Z. The two straight lines are recorded as abnormal dividing lines. Obtain an area on the plane monitoring map that is enclosed by the two anomaly demarcation lines and the edge line of the plane monitoring map, and record the area as the anomaly detection area; Obtain all the acquisition points within the anomaly detection area, and obtain the displacement measurement point corresponding to each acquisition point, which is recorded as a marked measurement point; Determine whether the marked measurement point has obtained the current coordinates; If the current coordinates of the marked measurement point are obtained, the marked measurement point will be deleted; Otherwise, keep the marked measurement point.

2. A method for improving the accuracy of geological disaster monitoring according to claim 1, characterized in that: The densely arranged displacement measurement points within the monitoring area further includes: On the plane monitoring map, starting from the marked connecting line, draw a straight line parallel to the marked connecting line at a distance A on both sides of the marked connecting line, which are recorded as marked straight lines; After each marked line: Get the distance between each marked straight line and the marked connecting line and compare them; Obtain the marked straight lines that are farthest from the marked straight line on both sides of the marked connection line, and record the two obtained marked straight lines as distal marked straight lines; Get the area between the two distal marker lines and record it as the marker line coverage area; When the marked straight line covers the entire plane monitoring map, stop drawing the marked straight line.

3. The method for improving the accuracy of geological disaster monitoring according to claim 1, characterized in that: The densely arranged displacement measurement points within the monitoring area further includes: Draw a straight line perpendicular to the marking connecting line and passing through the midpoint of the marking connecting line, and record it as the marking perpendicular line; On the plane monitoring map, starting from the marked vertical line, draw a straight line parallel to the marked vertical line at a distance A on both sides of the marked vertical line, and record it as an auxiliary straight line; After each auxiliary line: Get the distance between each auxiliary straight line and the marked perpendicular line and compare them; Obtain auxiliary straight lines that are farthest from the auxiliary straight line on both sides of the marked vertical line, and record the two obtained auxiliary straight lines as distal auxiliary straight lines; Get the area between the two distal auxiliary lines and record it as the auxiliary line coverage area; When the area covered by the auxiliary straight line completely covers the plane monitoring map, stop drawing the auxiliary straight line.

4. A method for improving the accuracy of geological disaster monitoring according to claim 1, characterized in that: The densely arranged displacement measurement points within the monitoring area further includes: Obtain the intersection points formed by the intersection of all marked straight lines and auxiliary straight lines, and record them as reference intersection points; Obtain a reference intersection point located in the plane monitoring map and record it as a selected reference intersection point; According to the position of the selected reference intersection in the plane monitoring map, the corresponding position of the selected reference intersection in the monitoring area is obtained, and the position of the selected intersection in the monitoring area is recorded as the collection point; Each acquisition point is regarded as a displacement measurement point.

5. The method for improving the accuracy of geological disaster monitoring according to claim 1, characterized in that: The monitoring of the displacement measurement points and determining whether displacement occurs in the monitoring area includes: In the plane monitoring map, draw a straight line that is tangent to the edge of the plane monitoring map and located below the plane monitoring map, and record it as the reference horizontal line; In the plane monitoring map, obtain the vertical distance between each collection point and the reference horizontal line, and record the distance as the reference distance of the collection point; According to the reference distance of each collection point, the collection points are numbered in order from longest to shortest according to the length of the reference distance; If there are collection points with the same reference distance, they will be numbered in sequence according to the numbering direction; The numbering direction is specifically: Draw two straight lines perpendicular to the reference horizontal line and tangent to the edge of the plane monitoring map. Randomly select one of them as the first tangent line and the other as the second tangent line. Obtain the intersection points of the first tangent line and the second tangent line with the reference horizontal line respectively, and record them as the first intersection point and the second intersection point respectively; The direction from the first intersection point to the second intersection point is recorded as the numbered direction; After completing the numbering of the acquisition points, the displacement measurement points corresponding to each acquisition point are obtained respectively, and the number of each acquisition point is used as the number of its corresponding displacement measurement point.

6. A method for improving the accuracy of geological disaster monitoring according to claim 5, characterized in that: The monitoring of the displacement measurement points and determining whether displacement occurs in the monitoring area includes: Establish a spatial rectangular coordinate system with the displacement reference point as the origin, and make the X-axis and Y-axis of the spatial rectangular coordinate system be on the same horizontal plane; After completing the setting of the displacement measurement points in the monitoring area, the coordinates of each displacement measurement point in the spatial rectangular coordinate system are recorded respectively and recorded as the initial coordinates of each displacement measurement point; When it is necessary to collect monitoring data of geological disasters in the monitoring area: According to the numbering order of the displacement measurement points, the coordinates of each displacement measurement point in the spatial rectangular coordinate system at the current moment are obtained in turn, and recorded as the current coordinates of the displacement measurement point; Each time the current coordinates of a displacement measurement point are obtained, the current coordinates of the displacement measurement point are compared with its initial coordinates; If the current coordinates of the displacement measurement point are the same as the initial coordinates, the current coordinates of the next numbered displacement measurement point are obtained in order of numbering; If the current coordinates of the displacement measurement point are different from the initial coordinates, the displacement measurement point is marked as an abnormal measurement point; For an abnormal measurement point, the direction from its initial coordinate to the current coordinate is used as the offset direction of the abnormal measurement point.

7. A method for improving geological disaster monitoring accuracy according to claim 6, characterized in that: The monitoring of the displacement measurement points and determining whether displacement occurs in the monitoring area further includes: Set the number of divisions used to specify the number of sub-anomaly regions, denoted as D; Intercept the part of the abnormal reference straight line that is within the abnormal detection area, and record the segment as a dividing segment; On the dividing line segment, set a dividing point at a certain distance, so that all the existing dividing points divide the dividing line segment into D equal parts; Draw a perpendicular line through each dividing point to the abnormal reference line, and record it as the dividing perpendicular line; The anomaly detection area is divided into D regions by vertical lines, and each region is regarded as a sub-anomaly region; Obtain the sub-abnormal area where the abnormal collection point is located, and record it as the initial sub-abnormal area; Obtain the center point of each sub-region respectively and record it as the regional center of the sub-abnormal region; Obtain the distance between the regional center of each sub-anomaly region and the regional center of the initial sub-anomaly region, and record it as the regional distance; On either side of the deviation direction of the abnormal acquisition point, any one side is recorded as side 1, and the other side is recorded as side 2; For sub-anomaly areas other than the initial sub-anomaly area, number them in ascending order according to their area distance. For sub-anomaly areas with equal area distances, give priority to numbering the sub-anomaly area on the number one side. Obtain a direction perpendicular to the offset direction, recorded as the marking direction; In each sub-anomaly area, the marked measurement points in the sub-anomaly area are traversed in sequence according to the offset direction and the marking direction, and the marked measurement points in the sub-anomaly area are numbered according to the traversal order, and recorded as the sub-anomaly area measurement number; The displacement measurement points are monitored according to the numbers of the sub-anomaly areas and the sub-anomaly area measurement numbers within each sub-anomaly area.

8. A method for improving the accuracy of geological disaster monitoring according to claim 7, characterized in that: The monitoring of the displacement measurement points according to the numbers of the sub-abnormal regions and the sub-abnormal region measurement numbers within each sub-abnormal region includes: Starting from the initial sub-anomaly region and following the numbering order of other sub-anomaly regions, select each sub-anomaly region in turn; When a sub-region is selected, each marked measurement point is selected in turn according to the sub-anomaly region measurement number sequence of the marked measurement points within the sub-region; After selecting a marked measurement point, obtain the displacement measurement point corresponding to the marked measurement point in the monitoring area, and obtain the coordinates of the displacement measurement point in the spatial rectangular coordinate system, and compare them with the initial coordinates of the displacement measurement point to determine whether the coordinates are the same; If the coordinates are the same, no processing is done; If the coordinates are different, the distance between the current coordinates and the initial coordinates is obtained and recorded as the offset distance of the displacement measurement point; Sequentially obtain the offset distance of the displacement measurement point corresponding to each marked measurement point in the anomaly detection area; In each sub-anomaly detection area, the offset distances of the displacement measurement points corresponding to each marked measurement point are compared, and the displacement measurement point with the largest offset distance is selected and recorded as the extreme displacement point; Connect each extreme displacement point in turn, and use the formed connection line as the location of the crack.

9. A system using the method for improving the accuracy of geological disaster monitoring according to claim 1, characterized in that: include: Displacement measurement point module: used to set displacement measurement points in the monitoring area; Surveying and mapping module: used to survey and map the monitoring area and obtain the plane monitoring map of the detection area; Grid division module: used to divide the grid on the plane monitoring map and obtain the collection points according to the divided grid; Numbering module: used to number the acquisition points, sub-anomaly areas and marked measurement points; Coordinate acquisition module: used to establish a spatial rectangular coordinate system in the monitoring area and obtain the coordinates of each displacement measurement point; Region division module: used to divide the anomaly detection area into sub-anomaly areas.

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