Surface mine slope monitoring and early warning risk assessment method and system

Abstract

The invention provides a surface mine slope monitoring and early warning risk assessment method and system, and the method comprises the steps: obtaining the slope information of a to-be-monitored surface mine slope, and determining a monitoring level based on the slope information; selecting a plurality of necessary monitoring indexes from the monitoring index group according to the monitoring level, and judging whether video monitoring is needed or not; respectively setting a plurality of early warning thresholds and a plurality of corresponding threshold scores for the necessary monitoring indexes, and respectively setting index weights for the necessary monitoring indexes; monitoring a real-time index value corresponding to the necessary monitoring index, obtaining a real-time index score in combination with an early warning threshold value, and obtaining a total early warning score in combination with an index weight; and determining the early warning level of the surface mine slope to be monitored based on the total early warning score. By means of the mode, a comprehensive and accurate early warning mechanism is constructed, it is ensured that the stability of the surface mine slope can be truly reflected, and the production safety of a mine is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of slope risk warning, and in particular to a method and system for risk assessment of slope monitoring and early warning in an open-pit mine. Background Art

[0002] The stability of the slope of an open-pit mine is an indispensable and key component of mining operations. Once the slope is unstable, it will not only cause the production activities to be interrupted, but also may lead to major safety accidents, seriously threaten the lives of miners, and have a profound impact on the ecological balance of the surrounding environment. Therefore, the implementation of accurate and efficient monitoring and early warning risk assessment of the slope of the open-pit mine is of vital importance to ensure the safety of mine production.

[0003] Most of the existing early warning risk analysis methods are limited to a single monitoring indicator. This single-indicator evaluation model ignores the interrelationships and constraints among the indicators, resulting in the evaluation results being difficult to truly and comprehensively reflect the stability of the slope. In addition, the independence of a single indicator also limits its applicability under complex geological conditions, making the evaluation results likely to be somewhat one-sided and limited. Summary of the invention

[0004] The embodiment of the present application provides an open-pit mine slope monitoring and early warning risk assessment method and system to solve the technical problems in the prior art of using a single monitoring indicator to provide risk warning for slopes, the lack of accuracy of the assessment results, and the assessment results are relatively one-sided and have limitations, and cannot be adapted to slopes with different geological conditions.

[0005] In order to achieve the above objectives, in a first aspect, an embodiment of the present application provides an open-pit mine slope monitoring and early warning risk assessment method, comprising the following steps:

[0006] Obtain slope information of the open-pit mine slope to be monitored, the slope information including slope height, slope angle, slope geological conditions and working condition safety factor, and determine the monitoring level of the open-pit mine slope to be monitored based on the slope information, the monitoring level including level one, level two, level three and level four with gradually decreasing importance;

[0007] According to the monitoring level, a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored are selected from the monitoring indicator group, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and whether video monitoring is needed is determined;

[0008] Setting a number of early warning thresholds and a number of threshold scores corresponding to the early warning thresholds for the necessary monitoring indicators, and setting indicator weights for the necessary monitoring indicators;

[0009] Monitoring the real-time indicator value corresponding to the necessary monitoring indicator, comparing the real-time indicator value with the early warning threshold value, selecting a real-time indicator score from a plurality of the threshold scores, and determining a total early warning score of the open-pit mine slope to be monitored based on the indicator weight and the real-time indicator score;

[0010] The warning level of the open-pit mine slope to be monitored is determined based on the total warning score.

[0011] Compared with the related art, the beneficial effect of the present invention lies in: by obtaining the slope information of the open-pit mine slope to be monitored, and then obtaining the monitoring level based on the slope information, a number of necessary monitoring indicators are selected according to the monitoring level, which comprehensively considers the geological factors and environmental factors of the open-pit mine slope to be monitored. Different monitoring indicators can be automatically selected according to different open-pit mine slopes, that is, multiple monitoring indicators adapted to the actual situation of the open-pit mine slope to be monitored are adaptively determined, ensuring the comprehensiveness of the evaluation and improving the applicability of the evaluation method; by setting the warning threshold, the threshold score and the indicator weight for the necessary monitoring indicators, the correlation between different monitoring indicators is considered, and then the warning level is determined by obtaining the total warning score, and a comprehensive and accurate warning mechanism is constructed to ensure that it can truly reflect the stability of the open-pit mine slope and ensure the production safety of the mine.

[0012] Further, the step of determining the monitoring level of the open-pit mine slope to be monitored based on the slope information includes:

[0013] Mapping the slope height into a height grade index, mapping the slope angle into a slope grade index, mapping the slope geological condition into a geological grade index, and mapping the working condition safety factor into a landslide risk index;

[0014] Obtaining a deformation index through the height grade index, the slope grade index and the geological grade index;

[0015] The monitoring level of the open-pit mine slope to be monitored is determined based on the deformation index and the landslide risk index.

[0016] Furthermore, the step of mapping the slope height to a height grade index is specifically as follows:

[0017] If the height of the slope is greater than 500m, the height grade index is determined to be 1; if the height of the slope is between 200m and 500m, the height grade index is determined to be 2; if the height of the slope is between 100m and 200m, the height grade index is determined to be 3; if the height of the slope is less than 100m, the height grade index is determined to be 4;

[0018] The step of mapping the slope angle to a slope grade index is specifically as follows:

[0019] If the slope angle is greater than 42°, the slope grade index is determined to be 1; if the slope angle is between 30° and 42°, the slope grade index is determined to be 2; if the slope angle is less than 30°, the slope grade index is determined to be 3;

[0020] The slope geological conditions include engineering conditions and hydrological conditions. The step of mapping the slope geological conditions into a geological grade index is specifically as follows:

[0021] Compare the engineering conditions and the hydrological conditions to determine the base conditions. If the base conditions are simple, the geological grade index is determined to be 3; if the base conditions are medium, the geological grade index is determined to be 2; if the base conditions are complex, the geological grade index is determined to be 1;

[0022] The step of mapping the working condition safety factor into a landslide risk index comprises:

[0023] Determine whether the construction condition is normal or abnormal;

[0024] When the construction condition is a normal condition, if the condition safety factor is less than 1.1, the landslide risk index is determined to be 1; if the condition safety factor is between 1.1 and 1.2, the landslide risk index is determined to be 2; if the condition safety factor is between 1.2 and 1.3, the landslide risk index is determined to be 3; if the condition safety factor is greater than 1.3, the landslide risk index is determined to be 4;

[0025] When the construction condition is an abnormal condition, if the operating condition safety factor is less than 1.05, the landslide risk index is determined to be 1; if the operating condition safety factor is between 1.05 and 1.15, the landslide risk index is determined to be 2; if the operating condition safety factor is between 1.15 and 1.25, the landslide risk index is determined to be 3; if the operating condition safety factor is greater than 1.25, the landslide risk index is determined to be 4.

[0026] Furthermore, the calculation formula of the deformation index is:

[0027] D=H+A+G,

[0028] Among them, D represents the deformation index, H represents the height grade index, A represents the slope grade index, and G represents the geological grade index.

[0029] Furthermore, the step of determining the monitoring level of the open-pit mine slope to be monitored based on the deformation index and the landslide risk index includes:

[0030] Obtaining a first prediction level through the deformation index, and obtaining a second prediction level through the landslide risk index;

[0031] The first prediction level and the second prediction level are compared to select a monitoring level of the open-pit mine slope to be monitored from the first prediction level and the second prediction level.

[0032] Furthermore, the step of obtaining the first prediction level through the deformation index includes:

[0033] If the deformation index is 3 or 4, the first prediction level is determined to be level 1; if the deformation index is 5 or 6, the first prediction level is determined to be level 2; if the deformation index is 7 or 8, the first prediction level is determined to be level 3; if the deformation index is 9 or 10, the first prediction level is determined to be level 4;

[0034] The step of obtaining the second prediction level through the landslide risk index comprises:

[0035] If the landslide risk index is 1, the second prediction level is determined to be level one; if the landslide risk index is 2, the second prediction level is determined to be level two; if the landslide risk index is 3, the second prediction level is determined to be level three; if the landslide risk index is 4, the second prediction level is determined to be level four.

[0036] Furthermore, the step of selecting a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored from the monitoring indicator group through the monitoring level, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and judging whether video monitoring is needed includes:

[0037] If the monitoring level is level one, the surface displacement, the internal displacement, the mining stress, the blasting vibration particle velocity, the seepage pressure, the groundwater level and the rainfall are selected as necessary monitoring indicators of the open-pit mine slope to be monitored, and it is determined that video monitoring is required;

[0038] If the monitoring level is level 2, the surface displacement, the blasting vibration particle velocity, the groundwater level and the rainfall are selected as necessary monitoring indicators for the open-pit mine slope to be monitored, and it is determined that video monitoring is required;

[0039] If the monitoring level is level three, the surface displacement and the rainfall are selected as necessary monitoring indicators for the open-pit mine slope to be monitored, and it is determined that video monitoring is required;

[0040] If the monitoring level is level four, the surface displacement is selected as a necessary monitoring indicator for the open-pit mine slope to be monitored, and it is determined that video monitoring is not necessary.

[0041] Furthermore, the calculation formula of the total warning score is:

[0042] W z =W1*A1+W2*A2+...+W n *A n ,

[0043] Among them, W z represents the total early warning score, W1 represents the real-time indicator score of the first necessary monitoring indicator, A1 represents the indicator weight corresponding to the first necessary monitoring indicator, W2 represents the real-time indicator score of the second necessary monitoring indicator, A2 represents the indicator weight corresponding to the second necessary monitoring indicator, and W n A represents the real-time indicator score of the nth necessary monitoring indicator. n Represents the indicator weight corresponding to the nth necessary monitoring indicator.

[0044] Furthermore, the warning levels include red warning, orange warning, yellow warning and blue warning with gradually decreasing warning levels, and the step of determining the warning level of the open-pit mine slope to be monitored based on the total warning score includes:

[0045] If the total warning score is greater than 0 and less than or equal to 1, the warning level is determined to be a red warning;

[0046] If the total warning score is greater than 1 and less than or equal to 2, the warning level is determined to be orange warning;

[0047] If the total warning score is greater than 2 and less than or equal to 3, the warning level is determined to be a yellow warning;

[0048] If the total warning score is greater than 3 and less than or equal to 4, the warning level is determined to be a blue warning.

[0049] In a second aspect, an embodiment of the present application provides an open-pit mine slope monitoring and early warning risk assessment system, which is applied to the open-pit mine slope monitoring and early warning risk assessment method as described in the first aspect above, and the system includes:

[0050] A collection module, used to obtain slope information of the open-pit mine slope to be monitored, wherein the slope information includes slope height, slope angle, slope geological conditions and working condition safety factor, and determine the monitoring level of the open-pit mine slope to be monitored based on the slope information, wherein the monitoring level includes level one, level two, level three and level four with gradually decreasing importance;

[0051] A selection module is used to select a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored from the monitoring indicator group according to the monitoring level, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and determine whether video monitoring is required;

[0052] An analysis module, used to set a number of warning thresholds and a number of threshold scores corresponding to the warning thresholds for the necessary monitoring indicators, and set indicator weights for the necessary monitoring indicators;

[0053] an acquisition module, configured to monitor a real-time indicator value corresponding to the necessary monitoring indicator, compare the real-time indicator value with the warning threshold value, select a real-time indicator score from a plurality of the threshold scores, and determine a total warning score of the open-pit mine slope to be monitored based on the indicator weight and the real-time indicator score;

[0054] An evaluation module is used to determine the warning level of the open-pit mine slope to be monitored based on the total warning score.

[0055] In a third aspect, an embodiment of the present application provides a computer, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the open-pit mine slope monitoring and early warning risk assessment method as described in the first aspect above is implemented.

[0056] In a fourth aspect, an embodiment of the present application provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the open-pit mine slope monitoring and early warning risk assessment method as described in the first aspect above is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a flow chart of the open-pit mine slope monitoring and early warning risk assessment method in the first embodiment of the present invention;

[0058] Figure 2 It is a structural block diagram of the open-pit mine slope monitoring and early warning risk assessment system in the second embodiment of the present invention;

[0059] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0061] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0062] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0063] See also Figure 1 The first embodiment of the present invention provides an open-pit mine slope monitoring and early warning risk assessment method, comprising the following steps:

[0064] Step S10: Obtain slope information of the open-pit mine slope to be monitored, the slope information including slope height, slope angle, slope geological conditions and working condition safety factor, and determine the monitoring level of the open-pit mine slope to be monitored based on the slope information, the monitoring level including level one, level two, level three and level four with gradually decreasing importance;

[0065] The step S10 comprises:

[0066] S110: Mapping the slope height into a height grade index, mapping the slope angle into a slope grade index, mapping the slope geological condition into a geological grade index, and mapping the working condition safety factor into a landslide risk index;

[0067] Specifically, if the slope height is greater than 500m, it is determined to be a super-high slope, and the height grade index is determined to be 1; if the slope height is between 200m and 500m, it is determined to be a high slope, and the height grade index is determined to be 2; if the slope height is between 100m and 200m, it is determined to be a medium-high slope, and the height grade index is determined to be 3; if the slope height is less than 100m, it is determined to be a low slope, and the height grade index is determined to be 4.

[0068] If the slope angle is greater than 42°, it is determined to be a steep slope, and the slope grade index is determined to be 1; if the slope angle is between 30° and 42°, it is determined to be a slope, and the slope grade index is determined to be 2; if the slope angle is less than 30°, it is determined to be a gentle slope, and the slope grade index is determined to be 3.

[0069] The slope geological conditions include engineering conditions and hydrological conditions. Both the engineering conditions and the hydrological conditions include simple, medium and complex conditions with increasing complexity. The engineering conditions and the hydrological conditions are compared to determine the benchmark conditions. It can be understood that when the engineering conditions and the hydrological conditions are the same, any one of them is selected as the benchmark condition; when the engineering conditions and the hydrological conditions are different, the one with higher complexity is determined as the benchmark condition, such as: when the engineering conditions are simple and the hydrological conditions are complex, the benchmark condition is complex.

[0070] If the benchmark conditions are simple, the geological grade index is determined to be 3; if the benchmark conditions are medium, the geological grade index is determined to be 2; if the benchmark conditions are complex, the geological grade index is determined to be 1.

[0071] Determine whether the construction condition is a normal condition or an abnormal condition, wherein the abnormal condition includes a rainstorm condition, a blasting condition, and an earthquake condition.

[0072] When the construction condition is a normal condition, if the condition safety factor is less than 1.1, the landslide risk index is determined to be 1; if the condition safety factor is between 1.1 and 1.2, the landslide risk index is determined to be 2; if the condition safety factor is between 1.2 and 1.3, the landslide risk index is determined to be 3; if the condition safety factor is greater than 1.3, the landslide risk index is determined to be 4;

[0073] When the construction condition is an abnormal condition, if the operating condition safety factor is less than 1.05, the landslide risk index is determined to be 1; if the operating condition safety factor is between 1.05 and 1.15, the landslide risk index is determined to be 2; if the operating condition safety factor is between 1.15 and 1.25, the landslide risk index is determined to be 3; if the operating condition safety factor is greater than 1.25, the landslide risk index is determined to be 4.

[0074] S120: Obtaining a deformation index through the height grade index, the slope grade index, and the geological grade index;

[0075] The calculation formula of the deformation index is:

[0076] D=H+A+G,

[0077] Among them, D represents the deformation index, H represents the height grade index, A represents the slope grade index, and G represents the geological grade index.

[0078] It can be understood that the deformation index ranges from 3 to 10.

[0079] S130: Determining a monitoring level of the open-pit mine slope to be monitored based on the deformation index and the landslide risk index;

[0080] The first prediction level is obtained through the deformation index, and the second prediction level is obtained through the landslide risk index; it can be understood that the first prediction level and the second prediction level both include level one, level two, level three and level four.

[0081] If the deformation index is 3 or 4, the first prediction level is determined to be level 1; if the deformation index is 5 or 6, the first prediction level is determined to be level 2; if the deformation index is 7 or 8, the first prediction level is determined to be level 3; if the deformation index is 9 or 10, the first prediction level is determined to be level 4;

[0082] If the landslide risk index is 1, the second prediction level is determined to be level 1; if the landslide risk index is 2, the second prediction level is determined to be level 2; if the landslide risk index is 3, the second prediction level is determined to be level 3; if the landslide risk index is 4, the second prediction level is determined to be level 4;

[0083] Comparing the first prediction level with the second prediction level to select a monitoring level of the open-pit mine slope to be monitored from the first prediction level and the second prediction level;

[0084] If the first prediction level and the second prediction level are the same, any one of them can be selected as the monitoring level; when the first prediction level and the second prediction level are different, the one with higher importance will be determined as the monitoring level, such as when the first prediction level is level one and the second prediction level is level two, the monitoring level is level one.

[0085] Step S20: According to the monitoring level, a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored are selected from the monitoring indicator group, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and whether video monitoring is needed is determined;

[0086] The step S20 comprises:

[0087] S210: If the monitoring level is level one, the surface displacement, the internal displacement, the mining stress, the blasting vibration particle velocity, the seepage pressure, the groundwater level and the rainfall are selected as necessary monitoring indicators of the open-pit mine slope to be monitored, and it is determined that video monitoring is required;

[0088] S220: If the monitoring level is level 2, the surface displacement, the blasting vibration particle velocity, the groundwater level and the rainfall are selected as necessary monitoring indicators of the open-pit mine slope to be monitored, and it is determined that video monitoring is required;

[0089] S230: If the monitoring level is level three, the surface displacement and the rainfall are selected as necessary monitoring indicators of the open-pit mine slope to be monitored, and it is determined that video monitoring is required;

[0090] S240: If the monitoring level is level 4, the surface displacement is selected as a necessary monitoring indicator for the open-pit mine slope to be monitored, and it is determined that video monitoring is not necessary.

[0091] Step S30: setting a plurality of warning thresholds and a plurality of threshold scores corresponding to the warning thresholds for the necessary monitoring indicators, and setting indicator weights for the plurality of necessary monitoring indicators;

[0092] Taking rainfall as an example, the necessary monitoring indicator, several warning thresholds are shown in Table 1:

[0093] Table 1

[0094]

[0095] The threshold scores set for the warning thresholds of rainfall are shown in Table 2:

[0096] Table 2

[0097] Warning threshold score I 1 II 2 III 3 IV 4

[0098] In this embodiment, the indicator weights are obtained by the AHP hierarchical analysis method, that is, after obtaining the necessary monitoring indicators, the necessary monitoring indicators are compared in pairs to construct a judgment matrix, and one of the necessary monitoring indicators is used as a benchmark, and its benchmark value is determined to be 1, and other necessary monitoring indicators are scored based on the benchmark value. After the construction of the judgment matrix is ​​completed, the eigenvector and eigenvalue of the judgment matrix are calculated, and the consistency of the judgment matrix is ​​monitored by calculating the random consistency ratio, so as to determine the indicator weights corresponding to different necessary monitoring indicators. The AHP hierarchical analysis method has been used more frequently and will not be repeated here.

[0099] Step S40: monitoring the real-time indicator value corresponding to the necessary monitoring indicator, comparing the real-time indicator value with the early warning threshold, selecting a real-time indicator score from a plurality of threshold scores, and determining a total early warning score of the open-pit mine slope to be monitored based on the indicator weight and the real-time indicator score;

[0100] It should be noted that if the necessary monitoring indicator includes several sub-indicators, the indicator weight corresponding to the necessary monitoring indicator can still be split into sub-weights of the sub-indicators through the AHP hierarchical analysis method. For example, when the necessary monitoring indicator is the groundwater level, the sub-indicators are the water level change amount and the water level change rate. Sub-thresholds are still set for the two sub-indicators to determine the sub-score, and then after the sub-weight is determined through the AHP hierarchical analysis method, the product of the sub-score and the sub-weight is superimposed to form the real-time indicator value of the necessary monitoring indicator.

[0101] The calculation formula for the total warning score is:

[0102] W z =W1*A1+W2*A2+...+W n *A n ,

[0103] Among them, W z represents the total early warning score, W1 represents the real-time indicator score of the first necessary monitoring indicator, A1 represents the indicator weight corresponding to the first necessary monitoring indicator, W2 represents the real-time indicator score of the second necessary monitoring indicator, A2 represents the indicator weight corresponding to the second necessary monitoring indicator, and W n A represents the real-time indicator score of the nth necessary monitoring indicator. n represents the indicator weight corresponding to the nth necessary monitoring indicator. n represents the number of the necessary monitoring indicators corresponding to the open-pit mine slope to be monitored.

[0104] S50: Determine the warning level of the open-pit mine slope to be monitored based on the total warning score;

[0105] The step S50 comprises:

[0106] S510: If the total warning score is greater than 0 and less than or equal to 1, the warning level is determined to be a red warning;

[0107] S520: If the total warning score is greater than 1 and less than or equal to 2, the warning level is determined to be an orange warning;

[0108] S530: If the total warning score is greater than 2 and less than or equal to 3, the warning level is determined to be a yellow warning;

[0109] S540: If the total warning score is greater than 3 and less than or equal to 4, the warning level is determined to be a blue warning.

[0110] It can be understood that the urgency of the red warning, the orange warning, the yellow warning and the blue warning gradually decreases.

[0111] By acquiring the slope information of the open-pit mine slope to be monitored, and then acquiring the monitoring level based on the slope information, a number of necessary monitoring indicators are selected according to the monitoring level, which comprehensively considers the geological factors and environmental factors of the open-pit mine slope to be monitored. Different monitoring indicators can be automatically selected according to different open-pit mine slopes, that is, a plurality of monitoring indicators adapted to the actual conditions of the open-pit mine slope to be monitored are adaptively determined, thereby ensuring the comprehensiveness of the evaluation and improving the applicability of the evaluation method; by setting the warning threshold, the threshold score and the indicator weight for the necessary monitoring indicators, the correlation between different monitoring indicators is considered, and then the warning level is determined by obtaining the total warning score, thereby constructing a comprehensive and accurate warning mechanism, ensuring that it can truly reflect the stability of the open-pit mine slope and ensure the production safety of the mine.

[0112] See also Figure 2 The second embodiment of the present invention provides an open-pit mine slope monitoring and early warning risk assessment system, which is applied to the open-pit mine slope monitoring and early warning risk assessment method described in the above embodiment, and will not be repeated here. As used below, the terms "module", "unit", "sub-unit", etc. can be a combination of software and / or hardware that implements predetermined functions. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0113] The system comprises:

[0114] The acquisition module 10 is used to obtain slope information of the open-pit mine slope to be monitored, wherein the slope information includes slope height, slope angle, slope geological conditions and working condition safety factor, and determine the monitoring level of the open-pit mine slope to be monitored based on the slope information, wherein the monitoring level includes level one, level two, level three and level four with gradually decreasing importance;

[0115] The acquisition module 10 includes:

[0116] The first unit is used to map the slope height into a height grade index, map the slope angle into a slope grade index, map the slope geological condition into a geological grade index, and map the working condition safety factor into a landslide risk index;

[0117] The second unit is used to obtain a deformation index through the height grade index, the slope grade index and the geological grade index;

[0118] A third unit is used to determine the monitoring level of the open-pit mine slope to be monitored based on the deformation index and the landslide risk index;

[0119] A selection module 20 is used to select a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored from the monitoring indicator group according to the monitoring level, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and determine whether video monitoring is required;

[0120] The selection module 20 comprises:

[0121] The fourth unit is used for selecting the surface displacement, the internal displacement, the mining stress, the blasting vibration particle velocity, the seepage pressure, the groundwater level and the rainfall as the necessary monitoring indicators of the open-pit mine slope to be monitored, and determining the need for video monitoring if the monitoring level is level one;

[0122] The fifth unit is used for selecting the surface displacement, the blasting vibration particle velocity, the groundwater level and the rainfall as necessary monitoring indicators of the open-pit mine slope to be monitored if the monitoring level is level 2, and determining the need for video monitoring;

[0123] The sixth unit is used for selecting the surface displacement and the rainfall as necessary monitoring indicators of the open-pit mine slope to be monitored if the monitoring level is level three, and determining the need for video monitoring;

[0124] The seventh unit is used for selecting the surface displacement as a necessary monitoring indicator of the open-pit mine slope to be monitored if the monitoring level is level 4, and determining that video monitoring is not required;

[0125] The analysis module 30 is used to set a plurality of warning thresholds and a plurality of threshold scores corresponding to the warning thresholds for the necessary monitoring indicators, and set indicator weights for the necessary monitoring indicators;

[0126] An acquisition module 40 is used to monitor the real-time indicator value corresponding to the necessary monitoring indicator, compare the real-time indicator value with the warning threshold value, select a real-time indicator score from a plurality of the threshold scores, and determine a total warning score of the open-pit mine slope to be monitored based on the indicator weight and the real-time indicator score;

[0127] An evaluation module 50, configured to determine the warning level of the open-pit mine slope to be monitored based on the total warning score;

[0128] The evaluation module 50 comprises:

[0129] The eighth unit is used to determine that the warning level is a red warning if the total warning score is greater than 0 and less than or equal to 1;

[0130] The ninth unit is used to determine that the warning level is an orange warning if the total warning score is greater than 1 and less than or equal to 2;

[0131] The tenth unit is used to determine that the warning level is a yellow warning if the total warning score is greater than 2 and less than or equal to 3;

[0132] The eleventh unit is used to determine that the warning level is a blue warning if the total warning score is greater than 3 and less than or equal to 4.

[0133] The present invention also provides a computer, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the open-pit mine slope monitoring and early warning risk assessment method as described in the above technical solution is implemented.

[0134] The present invention also provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the open-pit mine slope monitoring and early warning risk assessment method as described in the above technical solution is implemented.

[0135] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0136] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for risk assessment of open-pit mine slope monitoring and early warning, characterized in that: The following steps are involved: Obtain slope information of the open-pit mine slope to be monitored, the slope information including slope height, slope angle, slope geological conditions and working condition safety factor, and determine the monitoring level of the open-pit mine slope to be monitored based on the slope information, the monitoring level including level one, level two, level three and level four with gradually decreasing importance; According to the monitoring level, a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored are selected from the monitoring indicator group, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and whether video monitoring is needed is determined; Setting a number of early warning thresholds and a number of threshold scores corresponding to the early warning thresholds for the necessary monitoring indicators, and setting indicator weights for the necessary monitoring indicators; Monitoring the real-time indicator value corresponding to the necessary monitoring indicator, comparing the real-time indicator value with the early warning threshold value, selecting a real-time indicator score from a plurality of the threshold scores, and determining a total early warning score of the open-pit mine slope to be monitored based on the indicator weight and the real-time indicator score; The warning level of the open-pit mine slope to be monitored is determined based on the total warning score.

2. The open-pit mine slope monitoring and early warning risk assessment method according to claim 1 is characterized in that: The step of determining the monitoring level of the open-pit mine slope to be monitored based on the slope information comprises: Mapping the slope height into a height grade index, mapping the slope angle into a slope grade index, mapping the slope geological condition into a geological grade index, and mapping the working condition safety factor into a landslide risk index; Obtaining a deformation index through the height grade index, the slope grade index and the geological grade index; The monitoring level of the open-pit mine slope to be monitored is determined based on the deformation index and the landslide risk index.

3. The open-pit mine slope monitoring and early warning risk assessment method according to claim 2 is characterized in that: The step of mapping the slope height to a height grade index is specifically as follows: If the height of the slope is greater than 500m, the height grade index is determined to be 1; if the height of the slope is between 200m and 500m, the height grade index is determined to be 2; if the height of the slope is between 100m and 200m, the height grade index is determined to be 3; if the height of the slope is less than 100m, the height grade index is determined to be 4; The step of mapping the slope angle to a slope grade index is specifically as follows: If the slope angle is greater than 42°, the slope grade index is determined to be 1; if the slope angle is between 30° and 42°, the slope grade index is determined to be 2; if the slope angle is less than 30°, the slope grade index is determined to be 3; The slope geological conditions include engineering conditions and hydrological conditions. The step of mapping the slope geological conditions into a geological grade index is specifically as follows: Compare the engineering conditions and the hydrological conditions to determine the base conditions. If the base conditions are simple, the geological grade index is determined to be 3; if the base conditions are medium, the geological grade index is determined to be 2; If the benchmark condition is complex, the geological grade index is determined to be 1; The step of mapping the working condition safety factor into a landslide risk index comprises: Determine whether the construction condition is normal or abnormal; When the construction condition is a normal condition, if the condition safety factor is less than 1.1, the landslide risk index is determined to be 1; if the condition safety factor is between 1.1 and 1.2, the landslide risk index is determined to be 2; if the condition safety factor is between 1.2 and 1.3, the landslide risk index is determined to be 3; if the condition safety factor is greater than 1.3, the landslide risk index is determined to be 4; When the construction condition is an abnormal condition, if the operating condition safety factor is less than 1.05, the landslide risk index is determined to be 1; if the operating condition safety factor is between 1.05 and 1.15, the landslide risk index is determined to be 2; if the operating condition safety factor is between 1.15 and 1.25, the landslide risk index is determined to be 3; if the operating condition safety factor is greater than 1.25, the landslide risk index is determined to be 4.

4. The open-pit mine slope monitoring and early warning risk assessment method according to claim 2 is characterized in that: The calculation formula of the deformation index is: D=H+A+G, Among them, D represents the deformation index, H represents the height grade index, A represents the slope grade index, and G represents the geological grade index.

5. The open-pit mine slope monitoring and early warning risk assessment method according to claim 2 is characterized in that: The step of determining the monitoring level of the open-pit mine slope to be monitored based on the deformation index and the landslide risk index comprises: Obtaining a first prediction level through the deformation index, and obtaining a second prediction level through the landslide risk index; The first prediction level and the second prediction level are compared to select a monitoring level of the open-pit mine slope to be monitored from the first prediction level and the second prediction level.

6. The open-pit mine slope monitoring and early warning risk assessment method according to claim 5 is characterized in that: The step of obtaining the first prediction level through the deformation index comprises: If the deformation index is 3 or 4, the first prediction level is determined to be level 1; if the deformation index is 5 or 6, the first prediction level is determined to be level 2; if the deformation index is 7 or 8, the first prediction level is determined to be level 3; if the deformation index is 9 or 10, the first prediction level is determined to be level 4; The step of obtaining the second prediction level through the landslide risk index comprises: If the landslide risk index is 1, the second prediction level is determined to be level one; if the landslide risk index is 2, the second prediction level is determined to be level two; if the landslide risk index is 3, the second prediction level is determined to be level three; if the landslide risk index is 4, the second prediction level is determined to be level four.

7. The open-pit mine slope monitoring and early warning risk assessment method according to claim 1 is characterized in that: The step of selecting a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored from the monitoring indicator group through the monitoring level, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and judging whether video monitoring is needed includes: If the monitoring level is level one, the surface displacement, the internal displacement, the mining stress, the blasting vibration particle velocity, the seepage pressure, the groundwater level and the rainfall are selected as necessary monitoring indicators of the open-pit mine slope to be monitored, and it is determined that video monitoring is required; If the monitoring level is level 2, the surface displacement, the blasting vibration particle velocity, the groundwater level and the rainfall are selected as necessary monitoring indicators for the open-pit mine slope to be monitored, and it is determined that video monitoring is required; If the monitoring level is level three, the surface displacement and the rainfall are selected as necessary monitoring indicators for the open-pit mine slope to be monitored, and it is determined that video monitoring is required; If the monitoring level is level four, the surface displacement is selected as a necessary monitoring indicator for the open-pit mine slope to be monitored, and it is determined that video monitoring is not necessary.

8. The open-pit mine slope monitoring and early warning risk assessment method according to claim 1 is characterized in that: The calculation formula for the total warning score is: <h2 style=";text-align:left;direction:ltr">W<h2 style=";text-align:left;direction:ltr"> z <h2 style=";text-align:left;direction:ltr"> =W1*A1+W2*A2+...+W<h2 style=";text-align:left;direction:ltr"> n <h2 style=";text-align:left;direction:ltr"> *A<h2 style=";text-align:left;direction:ltr"> n <h2 style=";text-align:left;direction:ltr"> , Among them, W z represents the total early warning score, W1 represents the real-time indicator score of the first necessary monitoring indicator, A1 represents the indicator weight corresponding to the first necessary monitoring indicator, W2 represents the real-time indicator score of the second necessary monitoring indicator, A2 represents the indicator weight corresponding to the second necessary monitoring indicator, and W n A represents the real-time indicator score of the nth necessary monitoring indicator. n Represents the indicator weight corresponding to the nth necessary monitoring indicator.

9. The open-pit mine slope monitoring and early warning risk assessment method according to claim 1 is characterized in that: The warning levels include red warning, orange warning, yellow warning and blue warning with decreasing urgency. The step of determining the warning level of the open-pit mine slope to be monitored based on the total warning score includes: If the total warning score is greater than 0 and less than or equal to 1, the warning level is determined to be a red warning; If the total warning score is greater than 1 and less than or equal to 2, the warning level is determined to be orange warning; If the total warning score is greater than 2 and less than or equal to 3, the warning level is determined to be a yellow warning; If the total warning score is greater than 3 and less than or equal to 4, the warning level is determined to be a blue warning.

10. An open-pit mine slope monitoring and early warning risk assessment system, applied to the open-pit mine slope monitoring and early warning risk assessment as claimed in any one of claims 1 to 9, characterized in that: The system comprises: A collection module, used to obtain slope information of the open-pit mine slope to be monitored, wherein the slope information includes slope height, slope angle, slope geological conditions and working condition safety factor, and determine the monitoring level of the open-pit mine slope to be monitored based on the slope information, wherein the monitoring level includes level one, level two, level three and level four with gradually decreasing importance; A selection module is used to select a number of necessary monitoring indicators corresponding to the open-pit mine slope to be monitored from the monitoring indicator group according to the monitoring level, the monitoring indicator group including surface displacement, internal displacement, mining stress, blasting vibration particle velocity, seepage pressure, groundwater level and rainfall, and determine whether video monitoring is required; An analysis module, used to set a number of warning thresholds and a number of threshold scores corresponding to the warning thresholds for the necessary monitoring indicators, and set indicator weights for the necessary monitoring indicators; an acquisition module, configured to monitor a real-time indicator value corresponding to the necessary monitoring indicator, compare the real-time indicator value with the warning threshold value, select a real-time indicator score from a plurality of the threshold scores, and determine a total warning score of the open-pit mine slope to be monitored based on the indicator weight and the real-time indicator score; An evaluation module is used to determine the warning level of the open-pit mine slope to be monitored based on the total warning score.

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