A method and device for monitoring slope displacement in an open pit mine

Abstract

The invention discloses a method and a device for monitoring the displacement of an open-pit mine slope, and relates to the technical field of displacement monitoring. The invention comprises displacement data analysis before blasting, prediction of blasting displacement data and analysis of displacement data after blasting. Firstly, a blasting construction model is used to analyze the displacement data of the slope before blasting, and a blasting scheme of each slope monitoring point is obtained. Secondly, based on a blasting safety model and the blasting scheme of each blasting point, blasting construction data of each blasting is analyzed to obtain a blasting construction scheme. At the same time, environmental data of preset blasting points are collected and analyzed using a blasting environment model to obtain predicted slope displacement data of each blasting monitoring point. Finally, a construction safety model and preset slope displacement data of each blasting monitoring point are used to analyze the slope displacement data of each blasting monitoring point, and an early warning is performed. The implementation of the invention improves the safety and production efficiency of the open-pit mine.

Description

Technical Field

[0001] The present invention relates to the technical field of displacement monitoring, and in particular to a method and a device for monitoring the displacement of an open-pit mine slope. Background Art

[0002] With the continuous development of industrialization, the demand for ore is increasing. In the process of open-pit mining, blasting the slope is one of the important mining methods, but the blasting process may cause slope displacement and landslide. In the process of open-pit mining, the stability of the slope is crucial to the safe operation of the mine. Therefore, a method and device for monitoring the displacement of open-pit mine slopes are needed.

[0003] Existing technology, such as the invention patent application with announcement number CN117053645A, discloses a method for precise blasting construction of layered slopes, which belongs to the field of blasting construction technology. The method is as follows: collect data on the construction site of layered slope rocks, analyze the rock blasting damage process, and then analyze the maximum impact range of the explosion according to the blasting damage process, derive the damage range calculation formula, analyze the dimensions and flight process of the factors affecting the blasting flying rocks, determine the maximum flight distance and average flight distance of the blasting flying rocks, set a safe distance, and install explosives for construction blasting according to the damage measurement and the safe distance. Determine the prediction calculation formula for the blasting flying rock throwing distance, determine the safe distance of blasting in time, analyze the role of uncoupled charge-related parameters at the same time, and derive the damage range calculation formula based on the rock mass failure criterion to obtain the theoretical calculation result, that is, the radius of the rock mass crushing zone and the fracture zone, so as to achieve good control of the blasting area radius and achieve precise blasting, which can effectively ensure the external and internal safety of the blasting construction.

[0004] The above scheme has at least the following shortcomings: 1. The above scheme only calculates the blasting safety range based on the blasting flying rock data and rock damage data during blasting to carry out blasting, but does not analyze the landslide problem caused by blasting. Blasting will cause changes in the internal stress data of the mine slope, thereby changing the slope displacement, and further reducing the stability of the landslide. At the same time, the environmental data of different parts of the slope are different, and the homogenized analysis is likely to cause the collapse of the weak points of the mountain, thereby causing landslides. Analyzing solely from the perspective of rocks and flying rocks reduces the validity of the data and increases the danger of blasting.

[0005] 2. The above scheme only analyzes the safe range of blasting during blasting, and does not analyze the slope data after blasting based on the predicted data of the slope before blasting. It is impossible to analyze the safety of the slope after blasting. When the explosives are affected by other factors and the explosion power is enhanced, and the explosion effect exceeds the preset effect, the potential danger of the slope is increased, and the safety of subsequent construction cannot be guaranteed. The effect after blasting is not analyzed, which reduces the validity of the data. Summary of the invention

[0006] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a method and device for monitoring the displacement of an open-pit mine slope.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides an open-pit mine slope displacement monitoring method, comprising the following steps: Step 1, analysis of displacement data before blasting: collecting the slope displacement data before blasting, analyzing the slope displacement data before blasting based on the blasting construction model, and obtaining the blasting plan for each blasting point.

[0008] Step 2: Prediction of blasting displacement data: Collect the blasting construction data of each blasting, analyze the blasting construction data of each blasting based on the blasting safety model and the blasting plan of each blasting point, and obtain the blasting construction plan. The blasting construction plan includes preset blasting points and blasting methods. Collect the environmental data of the preset blasting points, analyze the environmental data of the preset blasting points based on the blasting environment model, and obtain the predicted slope displacement data of each blasting monitoring point.

[0009] Step 3: Analysis of displacement data after blasting: After blasting, collect the slope displacement data of each blasting monitoring point, analyze the displacement data of each blasting monitoring point based on the construction safety model and the preset displacement data of each blasting monitoring point, and issue an early warning.

[0010] Preferably, the blasting construction data of each blasting include the rock stability index at each distance from the blasting point corresponding to each blasting energy, the landslide stability index at each distance from the blasting point, the minimum rock stability index and the minimum landslide stability index. The rock stability index at each distance from the blasting point corresponding to the blasting energy in the blasting plan of each blasting point is obtained from the blasting construction data of each blasting. According to the distance between each pre-blasting monitoring point in the blasting plan of each blasting point, the rock stability index and the landslide stability index of each pre-blasting monitoring point corresponding to each blasting point are obtained.

[0011] The rock stability index of each monitoring point before blasting, the landslide stability index of each monitoring point before blasting, the minimum rock stability index and the minimum landslide stability index corresponding to each blasting point are input into the blasting safety model expression to obtain the output result of each blasting point. The value of the output result is the safety level of each blasting point. The blasting point with the maximum safety level is recorded as the preset blasting point, so as to obtain the blasting plan of the preset blasting point and then the blasting construction plan.

[0012] Preferably, the slope displacement data of each blasting monitoring point includes the blasting vibration velocity, stress assessment index and rock crushing index of the blasting monitoring point. The slope displacement data of each blasting monitoring point and the preset slope displacement data are input into the construction safety model to obtain an output result, and the value of the output result includes 0 and 1.

[0013] If the output result is 0, it indicates that the construction safety is low, and an early warning is issued to prompt the staff to conduct displacement monitoring of each blasting monitoring point.

[0014] On the other hand, the present invention provides an open-pit mine slope displacement monitoring device, comprising the following modules: a pre-blasting displacement data analysis module, for collecting pre-blasting slope displacement data, analyzing the pre-blasting slope displacement data based on a blasting construction model, and obtaining a blasting plan for each blasting point.

[0015] The blasting displacement data prediction module is used to collect the blasting construction data of each blasting, analyze the blasting construction data of each blasting based on the blasting safety model and the blasting plan of each blasting point, and obtain the blasting construction plan. The blasting construction plan includes preset blasting points and blasting methods. The environmental data of the preset blasting points is collected and analyzed based on the blasting environment model to obtain the predicted slope displacement data of each blasting monitoring point.

[0016] The post-blasting displacement data analysis module is used to collect the slope displacement data of each blasting monitoring point after blasting, analyze the displacement data of each blasting monitoring point based on the construction safety model and the preset displacement data of each blasting monitoring point, and issue an early warning.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention firstly adopts a blasting construction model to analyze the slope displacement data before blasting to obtain a blasting plan for each slope monitoring point; secondly, based on a blasting safety model and the blasting plan for each blasting point, the blasting construction data of each blasting is analyzed to obtain a blasting construction plan; at the same time, environmental data of preset blasting points are collected and analyzed using a blasting environment model to obtain predicted slope displacement data for each blasting monitoring point; finally, the construction safety model and the predicted slope displacement data for each blasting monitoring point are used to analyze the slope displacement data for each blasting monitoring point and to issue an early warning; the implementation of the present invention improves the safety and production efficiency of open-pit mines.

[0018] 2. On the one hand, the present invention analyzes the landslide problem caused by blasting, thereby setting up a safe blasting plan, reducing the impact of landslides caused by different environmental data at different locations on the slope, increasing the validity of the data, and increasing the safety of blasting. On the other hand, the present invention analyzes the slope data after blasting based on the predicted data of slope displacement before blasting, thereby judging the safety of the slope after blasting, and increasing the safety of subsequent construction after the blasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The present invention is a schematic flow chart of the steps for implementing the method.

[0021] Figure 2 It is a schematic diagram of the structural connection of the device of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0023] according to Figure 1 As shown, the present invention provides an open-pit mine slope displacement monitoring method, comprising the following steps: Step 1, analysis of displacement data before blasting: collecting the slope displacement data before blasting, analyzing the slope displacement data before blasting based on a blasting construction model, and obtaining a blasting plan for each blasting point.

[0024] In a specific embodiment, the slope displacement data before blasting is collected, and the specific collection process is as follows: the displacement change rate and the inclination change rate of each slope monitoring point are collected by a level and an inclinometer, and the displacement change rate and the inclination change rate of each slope monitoring point are weightedly calculated to obtain the landslide index of each slope monitoring point, and a circle is drawn with each slope monitoring point as the center and a preset radius. The area within the circle is the monitoring area of ​​each slope monitoring point, and the density of each fault in the monitoring area of ​​each slope monitoring point is obtained through a geological map. The density of each fault in the monitoring area of ​​each slope monitoring point is weightedly calculated to obtain the geological vulnerability assessment index of each slope monitoring point.

[0025] It should be noted that the setting process of each slope monitoring point is: the staff selects a preset number of monitoring points, and randomly selects a preset number of points while ensuring that the distance between the slope monitoring points is greater than the preset distance. Each point is a slope monitoring point.

[0026] In a specific embodiment, the slope displacement data before blasting is analyzed, and the specific analysis process is as follows: the slope displacement data before blasting includes the landslide index and geological fragility assessment index of each slope monitoring point before blasting, and the landslide index and geological fragility assessment index of each slope monitoring point before blasting are input into the blasting construction model expression to obtain the output results of each slope monitoring point, and the output result values ​​include 0 and 1.

[0027] If the output result of a slope monitoring point is 0, it indicates that the slope monitoring point cannot be used as a blasting point, and it is recorded as a pre-blasting monitoring point, so as to obtain each pre-blasting monitoring point. If the output result of a slope monitoring point is 1, it indicates that the slope monitoring point can be used as a blasting point, so as to obtain each blasting point. According to the preset blasting area position, the surface image of the slope is collected, and the farthest distance from the position of each blasting point to the edge of the blasting area is obtained through image recognition technology, which is recorded as the blasting radius of each blasting point. The blasting plan corresponding to the blasting radius of each blasting point is obtained from the database, so as to obtain the blasting plan for each blasting point.

[0028] It should be noted that each blasting point is a slope monitoring point that meets the blasting requirements, and each pre-blasting monitoring point is a slope monitoring point that does not meet the blasting requirements.

[0029] In a specific embodiment, the blasting construction model expression is:

[0030] ,in, Slope monitoring point The output result is, is the number of the slope monitoring point, , , and They are the slope monitoring points before blasting. Landslide index and geological vulnerability assessment index, and They are the preset standard landslide index and standard geological vulnerability assessment index. and are the weight factors of the preset landslide index and geological vulnerability assessment index, respectively. , , , It is the preset blasting quality index.

[0031] It should be noted that the standard landslide index in the standard parameters is the threshold of the landslide index of the normal slope. When the landslide index exceeds the standard landslide index, it indicates that the slope has an impact on landslide. Set by staff, standard parameters and With standard parameters The setup process is the same, e.g. 0.32 is 0.84 and is 0.72, the weight factor and All are set by staff, e.g. is 0.45 and is 0.55.

[0032] Step 2: Prediction of blasting displacement data: Collect the blasting construction data of each blasting, analyze the blasting construction data of each blasting based on the blasting safety model and the blasting plan of each blasting point, and obtain the blasting construction plan. The blasting construction plan includes preset blasting points and blasting methods. Collect the environmental data of the preset blasting points, analyze the environmental data of the preset blasting points based on the blasting environment model, and obtain the predicted slope displacement data of each blasting monitoring point.

[0033] In a specific embodiment, the blasting construction data of each blasting is collected, and after each blasting, the blasting energy of each blasting, the distance of each blasting point and the blasting influence data of each blasting point are collected, and a table is generated with the blasting energy as the horizontal column and the distance of each blasting point as the vertical column. The table content is the blasting influence data. If there are multiple blasting influence data in the same cell, the average calculation is performed, and the calculation result is the cell content, so as to obtain the rock stability index of the blasting point at each distance corresponding to each blasting energy, the landslide stability index of the blasting point at each distance, the minimum rock stability index and the minimum landslide stability index.

[0034] It should be noted that the blasting impact data include rock stability index, landslide stability index at each distance from the blasting point, minimum rock stability index and minimum landslide stability index. The rock stability index indicates the rock displacement amplitude. The larger the rock displacement amplitude, the lower the rock stability. The landslide stability index refers to the anti-landslide ability. The lower the anti-landslide ability, the lower the landslide stability index.

[0035] In a specific embodiment, the blasting construction data of each blasting is analyzed, and the specific analysis process is as follows: the blasting construction data of each blasting includes the rock stability index of each distance blasting point corresponding to each blasting energy, the landslide stability index of each distance blasting point, the minimum rock stability index and the minimum landslide stability index; the rock stability index of each distance blasting point corresponding to the blasting energy in the blasting plan of each blasting point, the landslide stability index of each distance blasting point, the minimum rock stability index and the minimum landslide stability index are obtained from the blasting construction data of each blasting; according to the distance between each pre-blasting monitoring point in the blasting plan of each blasting point, the rock stability index and the landslide stability index of each pre-blasting monitoring point corresponding to each blasting point are obtained.

[0036] The rock stability index of each monitoring point before blasting, the landslide stability index of each monitoring point before blasting, the minimum rock stability index and the minimum landslide stability index corresponding to each blasting point are input into the blasting safety model expression to obtain the output results of each blasting point. The output result value is the safety level of each blasting point, , , That is the upper limit of the safety level. The blasting point with the maximum safety level is recorded as the preset blasting point, so as to obtain the blasting plan of the preset blasting point, and then obtain the blasting construction plan.

[0037] In a specific embodiment, the blasting safety model expression is:

[0038] ,in, Explosion point The output result is, is the number of the blasting point, , , and Explosion Point Corresponding pre-blasting monitoring points The rock stability index and landslide stability index, is the number of the monitoring point before blasting, , , The value of is the total number of monitoring points before blasting. and Explosion Point The corresponding minimum rock stability index and minimum landslide stability index, , , and They are the preset standard rock stability index, standard landslide stability index, extreme rock stability index and extreme landslide stability index. Preset monitoring point before blasting The weight factor of , , and are the preset weight factors of rock stability index and landslide stability, respectively. , , , , , and The preset first safety index, Safety index, Safety index and Safety index.

[0039] It should be noted that the standard parameters , , , , , , and Setup process and standard parameters The setup process is the same as 1.2 1.5, 2.4 2.7 1.3 1.6 is 1.7 and is 3.1, the weight factor , and The setting process and weight factor The setup process is the same as 0.13 is 0.24 and It is 0.76.

[0040] In a specific embodiment, the environmental data of the preset blasting point is collected, and the specific collection process is as follows: the geological fragile zone is obtained through magnetic exploration technology, and then the area of ​​the geological fragile zone is obtained, the rock strength is collected through point load test, and the slope height, slope gradient and distance from the top of the slope are collected through satellite remote sensing images.

[0041] In a specific embodiment, the environmental data of the preset blasting points are analyzed, and the specific analysis process is as follows: the environmental data of the preset blasting points include the blasting distance of each slope monitoring point, the area of ​​the geological fragile zone, the average rock strength, the maximum rock strength, the minimum rock strength, the slope height, the slope gradient and the distance from the top of the slope, and the blasting correction factor corresponding to the blasting distance of each slope monitoring point is obtained from the database, and the blasting correction factor of each slope monitoring point, the area of ​​the geological fragile zone, the average rock strength, the maximum rock strength, the minimum rock strength, the slope height, the slope gradient and the distance from the top of the slope are input into the blasting environment model to obtain the output results of each slope monitoring point, and the values ​​of the output results include 0 and 1.

[0042] If the output result of a certain slope monitoring point is 1, and the location of the slope monitoring point does not belong to the blasting area, the slope monitoring point is recorded as a blasting monitoring point, so as to obtain each blasting monitoring point, and then the length of each blasting monitoring point from the preset blasting point is obtained through image recognition technology, and each historical blasting record is obtained from the database. Each historical blasting record includes the slope displacement data of each distance corresponding to each blasting scheme. If the blasting scheme of the preset blasting point is the same as a blasting scheme in the database, and the length of a blasting monitoring point from the preset blasting point is equal to a certain distance of the blasting scheme, then the predicted slope displacement data of the blasting monitoring point is the slope displacement data in the database, so as to obtain the predicted slope displacement data of each blasting monitoring point.

[0043] In a specific embodiment, the blasting environment model expression is:

[0044] , in, is the output result of the slope monitoring point, is the number of the slope monitoring point, , , , , , , , , ,and Slope monitoring points blasting correction factor, area of ​​geologically vulnerable zone, average rock strength, maximum rock strength, minimum rock strength, slope height, slope gradient and distance from the top of the slope, , and They are the preset standard geological fragile area, standard rock strength adjustment coefficient and standard height. , and They are the weight factor of the preset slope height, the weight factor of the theoretical slope height and the weight factor of the slope top distance. , , , , , and They are the preset geological weight factor, rock weight factor and height weight factor, , , , , It is the preset standard blasting environment safety assessment index.

[0045] It should be noted that , , , standard parameters , , and Setup process and standard parameters The setup process is the same as 0.32 0.47 is 1.83 and is 1.27, the weight factor , , , , and The setting process and weight factor The setup process is the same as 0.34 0.27 0.39 is 0.2, is 0.3 and is 0.5.

[0046] Step 3: Analysis of displacement data after blasting: After blasting, collect the slope displacement data of each blasting monitoring point, analyze the displacement data of each blasting monitoring point based on the construction safety model and the preset displacement data of each blasting monitoring point, and issue an early warning.

[0047] In a specific embodiment, the slope displacement data of each blasting monitoring point is collected, and the specific collection process is as follows: the blasting vibration velocity is calculated by the Sadovsky formula, the stress of each collection point is collected by a stress meter, and a stress evaluation index is obtained by weighted calculation, and the volume of each fragment after the blasting is collected, and the rock crushing index is obtained by weighted calculation.

[0048] In a specific embodiment, the slope displacement data of each blasting monitoring point is analyzed, and the specific analysis process is as follows: the slope displacement data of each blasting monitoring point includes the blasting vibration velocity, stress assessment index and rock crushing index of the blasting monitoring point, and the slope displacement data of each blasting monitoring point and the preset slope displacement data are input into the construction safety model to obtain an output result, and the output result value includes 0 and 1.

[0049] If the output result is 0, it indicates that the construction safety is low, and an early warning is issued to prompt the staff to conduct displacement monitoring of each blasting monitoring point.

[0050] In a specific embodiment, the construction safety model expression is:

[0051] , in, To output the result, , and Blasting monitoring points blasting vibration velocity, stress assessment index and rock crushing index, is the number of the blasting monitoring point, , , The value of is the total number of blasting monitoring points. , and They are the preset standard blasting vibration velocity, standard stress assessment index and standard rock crushing index. , and are the preset weight factors of standard blasting vibration velocity, standard stress assessment index and standard rock crushing index, respectively. , , , , is the preset weight factor, , , It is the preset standard construction safety index.

[0052] It should be noted that the standard parameters , , and Setup process and standard parameters The setup process is the same as 1.2 1.7 1.9, is 1.05, and the weight factor , , and Setting process and weighting factors The setup process is the same as 0.23 0.43 is 0.45 and is 0.08.

[0053] according to Figure 2 As shown, the present invention provides an open-pit mine slope displacement monitoring device, comprising the following devices: a pre-blasting displacement data analysis module, a blasting displacement data prediction module and a post-blasting displacement data analysis module.

[0054] The blasting displacement data prediction module is connected to the pre-blasting displacement data analysis module and the post-blasting displacement data analysis module respectively.

[0055] The pre-blasting displacement data analysis module is used to collect the pre-blasting slope displacement data. Based on the blasting construction model, the pre-blasting slope displacement data is analyzed to obtain the blasting plan for each blasting point.

[0056] The blasting displacement data prediction module is used to collect the blasting construction data of each blasting, analyze the blasting construction data of each blasting based on the blasting safety model and the blasting plan of each blasting point, and obtain the blasting construction plan. The blasting construction plan includes preset blasting points and blasting methods. The environmental data of the preset blasting points is collected and analyzed based on the blasting environment model to obtain the predicted slope displacement data of each blasting monitoring point.

[0057] The post-blasting displacement data analysis module is used to collect the slope displacement data of each blasting monitoring point after blasting, analyze the displacement data of each blasting monitoring point based on the construction safety model and the preset displacement data of each blasting monitoring point, and issue an early warning.

[0058] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they shall all fall within the protection scope of the present invention.

Claims

1. A method for monitoring slope displacement in an open-pit mine, characterized in that: The steps include: Step 1: Analysis of displacement data before blasting: Collect the displacement data of the slope before blasting, analyze the displacement data of the slope before blasting based on the blasting construction model, and obtain the blasting plan for each blasting point; Step 2: Prediction of blasting displacement data: Collect blasting construction data of each blasting, analyze the blasting construction data of each blasting based on the blasting safety model and the blasting plan of each blasting point, and obtain the blasting construction plan. The blasting construction plan includes preset blasting points and blasting methods. Collect environmental data of the preset blasting points, analyze the environmental data of the preset blasting points based on the blasting environment model, and obtain the predicted slope displacement data of each blasting monitoring point; Step 3: Analysis of displacement data after blasting: After blasting, collect the slope displacement data of each blasting monitoring point, analyze the displacement data of each blasting monitoring point based on the construction safety model and the predicted slope displacement data of each blasting monitoring point, and issue an early warning; The blasting construction data of each blasting are analyzed, and the specific analysis process is as follows: the blasting construction data of each blasting includes the rock stability index of each blasting point at each distance corresponding to each blasting energy, the landslide stability index of each blasting point at each distance, the minimum rock stability index and the minimum landslide stability index; the rock stability index of each blasting point at each distance corresponding to the blasting energy in the blasting scheme of each blasting point, the landslide stability index of each blasting point at each distance, the minimum rock stability index and the minimum landslide stability index; according to the distance between each pre-blasting monitoring point and the blasting point in the blasting scheme of each blasting point, the rock stability index and the landslide stability index of each pre-blasting monitoring point corresponding to each blasting point are obtained; The rock stability index of each monitoring point before blasting, the landslide stability index of each monitoring point before blasting, the minimum rock stability index and the minimum landslide stability index corresponding to each blasting point are input into the blasting safety model expression to obtain the output results of each blasting point. The output result value is the safety level of each blasting point, , , That is, the upper limit of the safety level, and the blasting point with the maximum safety level is recorded as the preset blasting point, so as to obtain the blasting plan of the preset blasting point, and then obtain the blasting construction plan; The blasting safety model expression is: ； in, Explosion point The output result is, is the number of the blasting point, , , and Explosion Point Corresponding pre-blasting monitoring points The rock stability index and landslide stability index, is the number of the monitoring point before blasting, , , The value of is the total number of monitoring points before blasting. and Explosion Point The corresponding minimum rock stability index and minimum landslide stability index, , , and They are the preset standard rock stability index, standard landslide stability index, extreme rock stability index and extreme landslide stability index. Preset monitoring point before blasting The weight factor of , , and are the preset weight factors of rock stability index and landslide stability, respectively. , , , , , and The preset first safety index, Safety index, Safety index and Safety index; The environmental data of the preset blasting points are analyzed, and the specific analysis process is as follows: the environmental data of the preset blasting points include the blasting distance of each slope monitoring point, the area of ​​the geological fragile zone, the average rock strength, the maximum rock strength, the minimum rock strength, the slope height, the slope gradient and the distance from the slope top, and the blasting correction factor corresponding to the blasting distance of each slope monitoring point is obtained from the database, and the blasting correction factor of each slope monitoring point, the area of ​​the geological fragile zone, the average rock strength, the maximum rock strength, the minimum rock strength, the slope height, the slope gradient and the distance from the slope top are input into the blasting environment model to obtain the output result of each slope monitoring point, and the value of the output result includes 0 and 1; If the output result of a certain slope monitoring point is 1, and the location of the slope monitoring point does not belong to the blasting area, the slope monitoring point is recorded as a blasting monitoring point, so as to obtain each blasting monitoring point, and then the length of each blasting monitoring point from the preset blasting point is obtained through image recognition technology, and each historical blasting record is obtained from the database. Each historical blasting record includes the slope displacement data of each distance corresponding to each blasting scheme. If the blasting scheme of the preset blasting point is the same as a blasting scheme in the database, and the length of a blasting monitoring point from the preset blasting point is equal to a certain distance of the blasting scheme, then the predicted slope displacement data of the blasting monitoring point is the slope displacement data in the database, so as to obtain the predicted slope displacement data of each blasting monitoring point; The blasting environment model expression is: ； in, is the output result of the slope monitoring point, is the number of the slope monitoring point, , , , , , , , , and Slope monitoring points blasting correction factor, area of ​​geologically vulnerable zone, average rock strength, maximum rock strength, minimum rock strength, slope height, slope gradient and distance from the top of the slope, , and They are the preset standard geological fragile area, standard rock strength adjustment coefficient and standard height. , and They are the weight factor of the preset slope height, the weight factor of the theoretical slope height and the weight factor of the slope top distance. , , , , , and They are the preset geological weight factor, rock weight factor and height weight factor, , , , , It is the preset standard blasting environment safety assessment index.

2. The method for monitoring the displacement of an open-pit mine slope according to claim 1, characterized in that: The above analysis of the slope displacement data before blasting is as follows: The slope displacement data before blasting include the landslide index and geological fragility assessment index of each slope monitoring point before blasting. The landslide index and geological fragility assessment index of each slope monitoring point before blasting are input into the blasting construction model expression to obtain the output results of each slope monitoring point. The output results have values ​​of 0 and 1. If the output result of a slope monitoring point is 0, it indicates that the slope monitoring point cannot be used as a blasting point, and it is recorded as a pre-blasting monitoring point, so as to obtain each pre-blasting monitoring point. If the output result of a slope monitoring point is 1, it indicates that the slope monitoring point can be used as a blasting point, so as to obtain each blasting point. According to the preset blasting area position, the surface image of the slope is collected, and the farthest distance from the position of each blasting point to the edge of the blasting area is obtained through image recognition technology, which is recorded as the blasting radius of each blasting point. The blasting plan corresponding to the blasting radius of each blasting point is obtained from the database, so as to obtain the blasting plan for each blasting point.

3. The method for monitoring the displacement of an open-pit mine slope according to claim 2, characterized in that: The blasting construction model expression is: ； in, Slope monitoring point The output result is, is the number of the slope monitoring point, , , and They are the slope monitoring points before blasting. Landslide index and geological vulnerability assessment index, and They are the preset standard landslide index and standard geological vulnerability assessment index. and are the weight factors of the preset landslide index and geological vulnerability assessment index, , , , It is the preset blasting quality index.

4. The method for monitoring the displacement of an open-pit mine slope according to claim 1, characterized in that: The slope displacement data of each blasting monitoring point is analyzed, and the specific analysis process is as follows: The slope displacement data of each blasting monitoring point includes the blasting vibration velocity, stress assessment index and rock crushing index of the blasting monitoring point. The slope displacement data of each blasting monitoring point and the predicted slope displacement data are input into the construction safety model to obtain the output result. The output result value includes 0 and 1. If the output result is 1, it indicates that the construction safety is low, and an early warning is issued to prompt the staff to conduct displacement monitoring of each blasting monitoring point.

5. The method for monitoring the displacement of an open-pit mine slope according to claim 4, characterized in that: The construction safety model expression is: ； in, To output the result, , and Blasting monitoring points blasting vibration velocity, stress assessment index and rock crushing index, is the number of the blasting monitoring point, , , The value of is the total number of blasting monitoring points. , and They are the preset standard blasting vibration velocity, standard stress assessment index and standard rock crushing index. , and They are the preset weight factors of standard blasting vibration velocity, standard stress assessment index and standard rock crushing index, respectively. , , , , For the preset blasting monitoring point The weight factor of , , It is the preset standard construction safety index.

6. An open-pit mine slope displacement monitoring device using the open-pit mine slope displacement monitoring method according to any one of claims 1 to 5, characterized in that: Includes the following modules: The pre-blasting displacement data analysis module is used to collect the pre-blasting slope displacement data, analyze the pre-blasting slope displacement data based on the blasting construction model, and obtain the blasting plan for each blasting point; The blasting displacement data prediction module is used to collect the blasting construction data of each blasting, analyze the blasting construction data of each blasting based on the blasting safety model and the blasting plan of each blasting point, and obtain the blasting construction plan. The blasting construction plan includes preset blasting points and blasting methods, collect environmental data of the preset blasting points, analyze the environmental data of the preset blasting points based on the blasting environment model, and obtain the predicted slope displacement data of each blasting monitoring point; The post-blasting displacement data analysis module is used to collect the slope displacement data of each blasting monitoring point after blasting, analyze the displacement data of each blasting monitoring point based on the construction safety model and the predicted slope displacement data of each blasting monitoring point, and issue an early warning.

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