A method and system for evaluating slope stability in open-pit coal mines

Abstract

The present invention is applicable to the computer field, and provides an open-pit coal mine slope stability evaluation method and system, including: obtaining open-pit coal mine position information at preset time intervals, and extracting the open-pit coal mine slope position information; analyzing the change of the open-pit coal mine slope position information by extracting the open-pit coal mine slope position information, obtaining suspicious slope position distribution information, and determining the common influencing factors affecting the change of the suspicious slope position information, wherein the common influencing factors are linearly correlated with the mining applied load and the slope gravity load; and evaluating the stability of different slopes of the same open-pit coal mine by the common influencing factors. The beneficial effects of the present invention are: being able to quickly analyze and evaluate the slope stability of the same open-pit coal mine, in particular, being able to achieve real-time monitoring and early warning during mining through accurate analysis and evaluation of the stability of the suspicious slope position, and effectively ensuring the safety of construction work.

Description

Technical Field

[0001] The invention belongs to the field of computer technology, and in particular relates to an evaluation method and system for slope stability of an open-pit coal mine. Background Art

[0002] An open-pit coal mine refers to a coal layer deposited on the surface or in shallow layers due to geographical changes. The stability of the slope of an open-pit coal mine determines the stability of the entire open-pit coal mine structure. The stability of the slope needs to be measured to determine the probability of a landslide.

[0003] At present, the regulatory authorities require mining companies to install slope monitoring piles, set up slope monitoring systems and connect them to the Internet. Some large groups, such as Shenhua Junneng Group, are equipped with slope monitoring radars, while most small and medium-sized open-pit coal mines use slope monitoring piles for slope monitoring. The monitoring methods are all carried out by applying technical means during and after the event. However, the best accident prevention is pre-emptive prevention. Engineering and technical personnel must carry out slope design and stability analysis while doing annual and monthly technical work. However, it is still difficult for mining companies to achieve this. The main reasons are weak technical strength, lack of professional training for practitioners, and insufficient attention from companies. Unstable slopes and even dangerous slopes are mostly caused by companies not paying enough attention to the mining process or even failing to do slope design and stability analysis, which then forms high and steep slopes and dangerous slopes.

[0004] At present, the stability of open-pit coal mine slopes is evaluated mainly with the help of qualitative methods and quantitative analysis methods. Qualitative methods include geological analysis method (historical cause analysis method), engineering geological analogy method, and graphical method; quantitative analysis methods include limit equilibrium method and numerical analysis method. Commonly used limit equilibrium methods include strip method, arc method, Bishop method, Janbu method, etc. In summary, these evaluation and detection processes are complicated. The stability evaluation of different slopes of the same open-pit coal mine needs to be carried out one by one, and the process is cumbersome. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a method and system for evaluating the stability of an open-pit coal mine slope, aiming to solve the problems raised in the above-mentioned background technology.

[0006] The embodiment of the present invention is implemented as follows: on the one hand, a method for evaluating the stability of an open-pit coal mine slope comprises:

[0007] Acquire the location information of the open-pit coal mine at every preset time period, and extract the location information of the slope of the open-pit coal mine;

[0008] By extracting the obtained open-pit coal mine slope position information, analyzing the change of the open-pit coal mine slope position information, obtaining the suspicious slope position distribution information, and determining the common influencing factors affecting the change of the suspicious slope position information, wherein the common influencing factors are linearly correlated with the mining applied load and the slope gravity load;

[0009] The stability of different slopes in the same open-pit coal mine is evaluated by common influencing factors;

[0010] During mining, the stability evaluation results of different slopes are updated in real time in combination with the change in the excavation applied load, so as to achieve real-time monitoring and early warning of mining.

[0011] As a further solution of the present invention, the step of acquiring the open-pit coal mine location information at preset time intervals and extracting the open-pit coal mine slope location information specifically includes:

[0012] Presetting a time period, wherein the time period is negatively correlated with rainfall, and the greater the rainfall, the shorter the set time period;

[0013] Acquiring location information of the same open-pit coal mine within a preset time period, wherein the location of the same open-pit coal mine includes the location of the surface coal mine and the location of the bottom coal mine;

[0014] The slope surface position information and the slope bottom position information in the same open-pit coal mine location information are extracted respectively.

[0015] As a further solution of the present invention, the step of extracting the open-pit coal mine slope position information, analyzing the change of the open-pit coal mine slope position information, and obtaining the suspicious slope position distribution information specifically includes:

[0016] The surface position information of the slope and the bottom position information of the slope extracted from each two adjacent times are compared respectively;

[0017] Accumulate and count the change values ​​of the slope surface position information and the change values ​​of the slope bottom position information;

[0018] The slope positions whose position information changes after cumulative statistics are greater than the preset gap value are marked to obtain the distribution information of the suspicious slope positions.

[0019] As a further solution of the present invention, before determining the common influencing factors affecting the change of the suspicious slope position information, the method further includes:

[0020] Acquire mining blasting information corresponding to the suspicious slope position within a preset time period interval, wherein the blasting information at least includes the blasting point position and the blasting vibration intensity;

[0021] The maximum blasting vibration intensity at the suspected slope position and the corresponding maximum suspected slope position change point are obtained, and the blasting instantaneous vibration intensity at the suspected slope position is calculated based on the maximum blasting vibration intensity, wherein the change value of the blasting instantaneous vibration intensity is proportional to the change value of the suspected slope position;

[0022] The cloud map of the change of the blasting vibration intensity and the suspicious slope position information of the open-pit coal mine blasting is established by comparing the instantaneous vibration intensity of the blasting with the corresponding suspicious slope position.

[0023] As a further solution of the present invention, before determining the common influencing factors affecting the change of the suspicious slope position information, the method further includes:

[0024] Obtain the water volume information of groundwater absorbed by the suspected slope location and the rainfall information of atmospheric precipitation, and calculate the corresponding gravity;

[0025] The slope gravity load is the component of the sum of the gravity of groundwater and the gravity of atmospheric rainfall corresponding to the slope along the slope angle.

[0026] As a further solution of the present invention, the step of determining the common influencing factors affecting the change of the suspicious slope position information specifically includes:

[0027] Update the location information of the suspicious slopes that meet the conditions;

[0028] The mining load and slope gravity load corresponding to the suspicious slope position are vector-synthesized to obtain the common influencing factors of different suspicious slope position information.

[0029] As a further solution of the present invention, the step of evaluating the stability of different slopes in the same open-pit coal mine by using common influencing factors and characteristic information of different slopes specifically includes:

[0030] The common influencing factors of different suspicious slopes are compared in scalar magnitude. The larger the common influencing factors of different suspicious slope positions are, the worse the stability of the corresponding suspicious slope position is, and vice versa.

[0031] As a further solution of the present invention, the step of updating the stability evaluation results of different slopes in real time in combination with the change value of the excavation applied load during mining to achieve real-time monitoring and early warning of mining specifically includes:

[0032] Obtaining the excavation pressure of the excavator, wherein the excavation pressure of the excavator is the product of the oil cylinder pressure of the excavator and the oil cylinder efficiency conversion coefficient;

[0033] Calculate the excavation applied load at the suspected slope position, wherein the excavation applied load at the suspected slope position is the components of the excavation pressure of the excavator in the vertical direction and the horizontal direction of the suspected slope;

[0034] The excavation load at the suspicious slope position is vector-synthesized with the common influencing factor to obtain the common mining influencing factor.

[0035] The stability of suspicious slope locations is evaluated based on common mining influencing factors.

[0036] As a further solution of the present invention, on the other hand, a system for evaluating the stability of an open-pit coal mine slope is provided, the system comprising:

[0037] An acquisition module is used to acquire the location information of the open-pit coal mine at every preset time period, and to extract the location information of the slope of the open-pit coal mine;

[0038] An analysis module is used to analyze the change of the open-pit coal mine slope position information by extracting the obtained open-pit coal mine slope position information, obtain the suspicious slope position distribution information, and determine the common influencing factors affecting the change of the suspicious slope position information, wherein the common influencing factors are linearly correlated with the mining applied load and the slope gravity load;

[0039] Evaluation module, used to evaluate the stability of different slopes in the same open-pit coal mine by using common influencing factors and characteristic information of different slopes;

[0040] The update module is used to update the stability evaluation results of different slopes in real time in combination with the change value of the excavation applied load during mining, so as to realize real-time monitoring and early warning of mining.

[0041] An open-pit coal mine slope stability evaluation method and system provided by an embodiment of the present invention, by extracting the open-pit coal mine slope position information, analyzing the change of the open-pit coal mine slope position information, and obtaining the distribution information of the suspected slope position, can evaluate the stability of the slope position exceeding the preset gap value, and determine the common influencing factors affecting the change of the suspected slope position information, wherein the common influencing factors are linearly related to the mining applied load and the slope gravity load, and can not only compare the stability of the suspected slope position in combination with the load size, but also obtain the direction of the load after the load vector is synthesized, and the landslide direction of the suspected slope position can be quickly predicted. At the same time, the change value of the excavation applied load during mining is fully considered, and the stability of the slope position is evaluated more accurately, so as to realize real-time monitoring and early warning of mining, and effectively ensure the safety of construction work. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a main flow chart of an evaluation method for slope stability in open pit coal mines.

[0043] Figure 2 It is a flow chart for obtaining the location information of an open-pit coal mine at every preset time period and extracting the location information of the slope of the open-pit coal mine.

[0044] Figure 3 The flow chart of the distribution information of the suspected slope position is obtained by extracting the slope position information of the open-pit coal mine and analyzing the change of the slope position information of the open-pit coal mine.

[0045] Figure 4 It is a flow chart of the method described before determining the common influencing factors affecting the change of the suspicious slope position information.

[0046] Figure 5 It is a flow chart that updates the stability evaluation results of different slopes in real time in combination with the changing value of the excavation applied load during mining.

[0047] Figure 6 It is the main structure diagram of an evaluation system for slope stability in open-pit coal mines. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail 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 invention and are not intended to limit the present invention.

[0049] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0050] The present invention provides an open-pit coal mine slope stability evaluation method and system, which solve the technical problems in the background technology.

[0051] like Figure 1 As shown, it is a main flow chart of a method for evaluating the stability of an open-pit coal mine slope provided by an embodiment of the present invention. The method for evaluating the stability of an open-pit coal mine slope comprises:

[0052] Step S10: acquiring the location information of the open-pit coal mine at every preset time period, and extracting the location information of the slope of the open-pit coal mine;

[0053] Step S11: by extracting the obtained open-pit coal mine slope position information, analyzing the change of the open-pit coal mine slope position information, obtaining the suspicious slope position distribution information, and determining the common influencing factors affecting the change of the suspicious slope position information, wherein the common influencing factors are linearly correlated with the mining applied load and the slope gravity load;

[0054] Step S12: evaluating the stability of different slopes in the same open-pit coal mine by using common influencing factors;

[0055] Step S13: During mining, the stability evaluation results of different slopes are updated in real time in combination with the change in the excavation applied load, so as to achieve real-time monitoring and early warning of mining.

[0056] It should be noted that the present invention analyzes and evaluates the stability of slopes that are in a stable or relatively stable state, and has taken into account the fact that the stress inside the suspicious slope position is in a balanced state. On this basis, only the influence of external forces, namely the mining load and the slope gravity load, is considered. This can simplify the analysis process and quickly analyze and evaluate the slopes of the same open-pit coal mine.

[0057] When this embodiment is applied, by extracting the open-pit coal mine slope position information, the change of the open-pit coal mine slope position information is analyzed to obtain the distribution information of the suspicious slope position, and the stability evaluation can be performed on the slope position exceeding the preset gap value, and the common influencing factors affecting the change of the suspicious slope position information can be determined, wherein the common influencing factors are linearly related to the mining applied load and the slope gravity load, and not only can the stability of the suspicious slope position be compared in combination with the load size, but also the direction of the load after the load vector is synthesized can be obtained, and the landslide direction of the suspicious slope position can be quickly predicted. At the same time, the change value of the excavation applied load during mining is fully considered, and the stability evaluation of the slope position is more accurate, so that real-time monitoring and early warning of mining can be achieved, and the safety of construction work can be effectively guaranteed.

[0058] like Figure 2 As shown, as a preferred embodiment of the present invention, the step of acquiring the open-pit coal mine location information at each preset time period and extracting the open-pit coal mine slope location information specifically includes:

[0059] Step S101: presetting a time period, wherein the time period is negatively correlated with the rainfall, and the greater the rainfall, the shorter the set time period;

[0060] Step S102: obtaining location information of the same open-pit coal mine within a preset time period, wherein the location of the same open-pit coal mine includes the location of the surface coal mine and the location of the bottom coal mine;

[0061] Step S103: extracting the slope surface position information and the slope bottom position information from the same open-pit coal mine position information respectively.

[0062] When this embodiment is applied, by presetting a time period and the pre-set time period can be adjusted, the acquisition of information is more practical. By respectively extracting the slope surface position information and the slope bottom position information in the same open-pit coal mine location information, it is possible to extract information on open-pit coal mines in an open-pit state and open-pit coal mines in a partially covered state. The extracted position information can be displayed on a three-dimensional dynamic interface.

[0063] like Figure 3As shown, as another preferred embodiment of the present invention, the step of extracting the open-pit coal mine slope position information, analyzing the change of the open-pit coal mine slope position information, and obtaining the suspicious slope position distribution information specifically includes:

[0064] Step S111: comparing the slope surface position information and the slope bottom position information extracted from two consecutive times respectively;

[0065] Step S112: cumulatively counting the change values ​​of the slope surface position information and the change values ​​of the slope bottom position information;

[0066] Step S113: marking the slope positions whose position information changes after cumulative statistics are greater than a preset difference value, to obtain suspicious slope position distribution information.

[0067] When this embodiment is applied, by accumulating and counting the change values ​​of the surface position information of the slope and the change values ​​of the bottom position information of the slope, and then marking the slope positions whose position information changes after cumulative statistics are greater than a preset gap value, the distribution information of the suspicious slope positions can be obtained. The suspicious slope positions here can be different local positions of different slopes or different local positions of the same slope. By selecting the suspicious slope positions, the subsequent stability judgment steps can be simplified, and the stability evaluation can be performed on the slope positions that exceed the preset gap value, which is conducive to quickly obtaining the judgment results, thereby proposing effective countermeasures.

[0068] like Figure 4 As shown, before determining the common influencing factors affecting the change of the suspicious slope position information, the method also includes:

[0069] Step S201: Acquire mining blasting information corresponding to the suspicious slope position within a preset time period interval, wherein the blasting information at least includes the blasting point position and the blasting vibration intensity;

[0070] Step S202: obtaining the maximum blasting vibration intensity of the suspicious slope position and the corresponding maximum suspicious slope position change point, and calculating the blasting instantaneous vibration intensity of the suspicious slope position according to the maximum blasting vibration intensity, wherein the change value of the blasting instantaneous vibration intensity is proportional to the change value of the suspicious slope position;

[0071] Step S203: establishing a cloud diagram of the change of the open-pit coal mine blasting vibration intensity with respect to the suspicious slope position information through the blasting instantaneous vibration intensity and the corresponding suspicious slope position.

[0072] When this embodiment is applied, the change value of the instantaneous vibration intensity of blasting is proportional to the change value of the suspicious slope position, so the instantaneous vibration intensity of blasting can be calculated for the suspicious slope position through the maximum blasting vibration intensity. By establishing a cloud map of the change of the open-pit coal mine blasting vibration intensity to the suspicious slope position information through the instantaneous vibration intensity of blasting and the corresponding suspicious slope position, the change of the position information of the suspicious slope position affected by the open-pit coal mine blasting vibration intensity can be better observed and judged. The blasting intensity can be converted into the corresponding blasting force through the force and intensity unit conversion table, and the direction of the blasting force is selected according to the blasting point and the center of the suspicious slope position.

[0073] As another preferred embodiment of the present invention, before determining the common influencing factors affecting the change of the suspicious slope position information, the method further includes:

[0074] Step S301: obtaining the water volume information of groundwater absorbed by the suspected slope position and the rainfall information of atmospheric precipitation, and calculating the corresponding gravity of each;

[0075] Step S302: The slope gravity load is the component of the sum of the gravity of groundwater and the gravity of atmospheric rainfall along the slope angle corresponding to the slope.

[0076] When this embodiment is applied, the water volume information of groundwater absorbed by the suspected slope position and the rainfall information of atmospheric rainfall are obtained to calculate the corresponding gravity of each. The slope gravity load can be obtained by calculating the sum of the gravity of groundwater absorbed by the slope and the gravity of atmospheric rainfall along the slope angle corresponding to the slope component. The direction of the slope gravity load is parallel to the slope angle.

[0077] The step of determining the common influencing factors affecting the change of the suspicious slope position information specifically includes:

[0078] Step S114: updating the suspicious slope position information that meets the conditions;

[0079] Step S115: vector synthesis of the mining applied load and the slope gravity load corresponding to the suspicious slope position to obtain the common influencing factors of different suspicious slope position information.

[0080] When this embodiment is applied, by updating the suspicious slope position information that meets the conditions, the suspicious slope position information that meets the conditions can be updated in combination with the update of the mining imposed load and the slope gravity load to obtain the exact suspicious slope position, thereby facilitating vector synthesis of the mining imposed load and the slope gravity load. Not only can the stability of the suspicious slope position be compared in combination with the size of the load, but the direction of the load after the load vector synthesis can also be obtained, and the landslide direction of the suspicious slope position can be predicted.

[0081] As another preferred embodiment of the present invention, the step of evaluating the stability of different slopes in the same open-pit coal mine by using common influencing factors and characteristic information of different slopes specifically includes:

[0082] Step S121: performing a scalar comparison on the common influencing factors of different suspicious slopes, wherein the larger the common influencing factors of different suspicious slope positions are, the worse the stability of the corresponding suspicious slope position is, and vice versa.

[0083] like Figure 5 As shown, in one case of this embodiment, the steps of updating the stability evaluation results of different slopes in real time in combination with the change value of the excavation applied load during mining to achieve real-time monitoring and early warning of mining specifically include:

[0084] Step S131: obtaining the excavation pressure of the excavator, where the excavation pressure of the excavator is the product of the oil cylinder pressure of the excavator and the oil cylinder efficiency conversion coefficient;

[0085] Step S132: calculating the excavation applied load at the suspected slope position, wherein the excavation applied load at the suspected slope position is the components of the excavation pressure of the excavator in the vertical direction and the horizontal direction of the suspected slope;

[0086] Step S133: vector synthesis of the excavation applied load at the suspicious slope position and the common influencing factor to obtain the mining common influencing factor;

[0087] Step S134: Evaluate the stability of the suspicious slope position according to the common mining influencing factors. Similarly, the greater the common mining influencing factors of different suspicious slope positions, the worse the stability of the corresponding suspicious slope position, and vice versa.

[0088] When this embodiment is applied, the stability evaluation results of different slopes are updated in real time by combining the change value of the excavation applied load during mining, so that the excavation applied load at the suspicious slope position and the common influencing factor can be vector synthesized to obtain the real-time updated common influencing factor of mining, and the excavation applied load of mining can be fully combined with the original common influencing factor to evaluate the stability of the suspicious slope position during mining, and the stability evaluation is more accurate. For example, when excavating the slope position, the maximum excavation force of the SY485H large excavator bucket reaches 287kN. When the bucket cylinder and the connecting rod, the dipper cylinder and the dipper rod are 90 degrees to each other, the excavation force is the largest. When the digging rod is used for excavation, the corresponding excavation angle is between 45 degrees from the front (vertical left deflection) to 30 degrees from the back (vertical right). At this time, the excavation force should be fully taken into account. When the excavation common influencing factor reaches the warning value, the staff is reminded to avoid accidents such as landslides during mining, thereby effectively ensuring the safety of construction work.

[0089] like Figure 6 As shown, it is a main structure diagram of an open-pit coal mine slope stability evaluation system provided by another embodiment of the present invention. On the other hand, the system includes:

[0090] The acquisition module 100 is used to acquire the location information of the open-pit coal mine at every preset time period, and extract the location information of the slope of the open-pit coal mine;

[0091] The analysis module 200 is used to analyze the change of the open-pit coal mine slope position information by extracting the obtained open-pit coal mine slope position information, obtain the suspicious slope position distribution information, and determine the common influencing factors affecting the change of the suspicious slope position information, wherein the common influencing factors are linearly correlated with the mining applied load and the slope gravity load;

[0092] An evaluation module 300 is used to evaluate the stability of different slopes in the same open-pit coal mine by using common influencing factors and characteristic information of different slopes;

[0093] The updating module 400 is used to update the stability evaluation results of different slopes in real time in combination with the change value of the excavation applied load during mining, so as to realize real-time monitoring and early warning of mining.

[0094] When this embodiment is applied, the system applies the method provided by the aforementioned embodiment to evaluate the stability of different slope positions in the same coal mine and to update and provide early warning prompts during mining.

[0095] The above embodiment of the present invention provides an open-pit coal mine slope stability evaluation method, and based on the evaluation method, provides an open-pit coal mine slope stability evaluation system, which extracts the open-pit coal mine slope position information, analyzes the change of the open-pit coal mine slope position information, and obtains the suspicious slope position distribution information, which can evaluate the stability of the slope position exceeding the preset gap value, and determine the common influencing factors that affect the change of the suspicious slope position information, wherein the common influencing factors are linearly related to the mining applied load and the slope gravity load, and can not only compare the stability of the suspicious slope position in combination with the load size, but also obtain the direction of the load after the load vector is synthesized, and the landslide direction of the suspicious slope position can be quickly predicted. At the same time, the change value of the excavation applied load during mining is fully considered, and the evaluation of the stability of the slope position is more accurate, so as to achieve real-time monitoring and early warning of mining, and effectively ensure the safety of construction work.

[0096] In order to load the above-mentioned method and system and enable it to run smoothly, the system, in addition to the various modules mentioned above, may also include more or fewer components than described above, or a combination of certain components, or different components, for example, may include input and output devices, network access devices, buses, processors and memories, sensors, etc.

[0097] It should be understood that, although each step in the flow chart of each embodiment of the present invention is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0098] 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.

[0099] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for evaluating the stability of an open-pit coal mine slope, characterized in that: include: Acquire the location information of the open-pit coal mine at every preset time period, and extract the location information of the slope of the open-pit coal mine; By extracting the obtained open-pit coal mine slope position information, analyzing the change of the open-pit coal mine slope position information, obtaining the suspicious slope position distribution information, and determining the common influencing factors affecting the change of the suspicious slope position information, wherein the common influencing factors are linearly correlated with the mining applied load and the slope gravity load; The stability of different slopes in the same open-pit coal mine is evaluated by common influencing factors; During mining, the stability evaluation results of different slopes are updated in real time in combination with the change in the excavation load, so as to achieve real-time monitoring and early warning of mining; Before determining the common influencing factors affecting the change of the suspicious slope position information, the method further includes: Obtain the water volume information of groundwater absorbed by the suspected slope location and the rainfall information of atmospheric precipitation, and calculate the corresponding gravity; The slope gravity load is the component of the sum of the gravity of groundwater and the gravity of atmospheric rainfall along the slope angle corresponding to the slope; The step of determining the common influencing factors affecting the change of the suspicious slope position information specifically includes: Update the location information of the suspicious slopes that meet the conditions; The mining load and slope gravity load corresponding to the suspicious slope position are vector-synthesized to obtain the common influencing factors of different suspicious slope position information; The steps of updating the stability evaluation results of different slopes in real time in combination with the change value of the excavation applied load during mining to achieve real-time monitoring and early warning of mining specifically include: Obtaining the excavation pressure of the excavator, wherein the excavation pressure of the excavator is the product of the oil cylinder pressure of the excavator and the oil cylinder efficiency conversion coefficient; Calculate the excavation applied load at the suspected slope position, wherein the excavation applied load at the suspected slope position is the components of the excavation pressure of the excavator in the vertical direction and the horizontal direction of the suspected slope; The excavation load at the suspicious slope position is vector-synthesized with the common influencing factor to obtain the common mining influencing factor. The stability of suspicious slope locations is evaluated based on common mining influencing factors.

2. The method for evaluating the slope stability of an open-pit coal mine according to claim 1, characterized in that: The step of acquiring the open-pit coal mine location information at preset time intervals and extracting the open-pit coal mine slope location information specifically includes: Presetting a time period, wherein the time period is negatively correlated with rainfall, and the greater the rainfall, the shorter the set time period; Acquiring location information of the same open-pit coal mine within a preset time period, wherein the location of the same open-pit coal mine includes the location of the surface coal mine and the location of the bottom coal mine; The slope surface position information and the slope bottom position information in the same open-pit coal mine location information are extracted respectively.

3. The method for evaluating the slope stability of an open-pit coal mine according to claim 2, characterized in that: The step of extracting the obtained open-pit coal mine slope position information and analyzing the change of the open-pit coal mine slope position information to obtain the suspicious slope position distribution information specifically includes: The surface position information of the slope and the bottom position information of the slope extracted from each two adjacent times are compared respectively; Accumulate and count the change values ​​of the slope surface position information and the change values ​​of the slope bottom position information; The slope positions whose position information changes after cumulative statistics are greater than the preset gap value are marked to obtain the distribution information of the suspicious slope positions.

4. The method for evaluating the slope stability of an open-pit coal mine according to claim 1, characterized in that: Before determining the common influencing factors affecting the change of the suspicious slope position information, the method further includes: Acquire mining blasting information corresponding to the suspicious slope position within a preset time period interval, wherein the blasting information at least includes the blasting point position and the blasting vibration intensity; The maximum blasting vibration intensity at the suspected slope position and the corresponding maximum suspected slope position change point are obtained, and the blasting instantaneous vibration intensity at the suspected slope position is calculated based on the maximum blasting vibration intensity, wherein the change value of the blasting instantaneous vibration intensity is proportional to the change value of the suspected slope position; The cloud map of the change of blasting vibration intensity and suspicious slope position information of open-pit coal mine is established through the instantaneous vibration intensity of blasting and the corresponding suspicious slope position.

5. The method for evaluating the slope stability of an open-pit coal mine according to claim 1, characterized in that: The step of evaluating the stability of different slopes in the same open-pit coal mine by using common influencing factors and characteristic information of different slopes specifically includes: The common influencing factors of different suspicious slopes are compared in scalar magnitude. The larger the common influencing factors of different suspicious slope positions are, the worse the stability of the corresponding suspicious slope position is, and vice versa.

6. An evaluation system using the open-pit coal mine slope stability evaluation method according to any one of claims 1 to 5, characterized in that: The system comprises: An acquisition module is used to acquire the location information of the open-pit coal mine at preset time intervals and extract the location information of the slope of the open-pit coal mine; An analysis module is used to analyze the change of the open-pit coal mine slope position information by extracting the obtained open-pit coal mine slope position information, obtain the suspicious slope position distribution information, and determine the common influencing factors affecting the change of the suspicious slope position information, wherein the common influencing factors are linearly correlated with the mining applied load and the slope gravity load; Evaluation module, used to evaluate the stability of different slopes in the same open-pit coal mine by using common influencing factors and characteristic information of different slopes; The update module is used to update the stability evaluation results of different slopes in real time in combination with the change value of the excavation applied load during mining, so as to realize real-time monitoring and early warning of mining.

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