Slope stability monitoring method and system for tailings pond

Abstract

The invention provides a side slope stability monitoring method and system for a tailing pond, and relates to the technical field of tailing pond safety monitoring, and the method comprises the steps: obtaining the infiltration line data of a tailing deposition beach, the surface displacement data of a tailing fill dam, and the water surface line data of a tailing pond at preset time intervals; calculating the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line; and according to the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line, the slope stability is judged, and a warning signal, a warning signal and an emergency signal are correspondingly output. The side slope stability monitoring method for the tailing pond not only can well meet the dam body monitoring requirement of the upstream type tailing pond, but also has high monitoring accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of tailings pond safety monitoring, and in particular to a slope stability monitoring method and system for tailings ponds. Background Art

[0002] Tailings ponds are special facilities formed by damming at the mouth of a valley or in an enclosure. Their main function is to store tailings produced by metal and non-metal mines during the beneficiation process. They are key infrastructure to ensure the smooth progress of mining production activities, but they also pose an important safety hazard to metal and non-metal mines. As a potential high-potential man-made debris flow risk point, once a tailings pond fails, it will not only cause a devastating blow to the lives and property safety of downstream residents, but may also cause irreversible pollution damage to the surrounding environment. Therefore, its safety management and risk prevention and control are crucial.

[0003] The main damming methods of tailings ponds in my country include upstream, midstream, downstream, dry storage, one-time damming and other methods. At present, among the tailings ponds in China, the dam body of the upstream tailings pond has been widely used in my country due to its outstanding advantages such as simple damming technology, relatively simple management and low operating costs. According to incomplete statistics, the proportion of tailings ponds using the upstream damming method is about 70%. Tailings ponds built with this damming method often have the problem of poor stability of the slope (i.e. the dam body of the upstream tailings pond).

[0004] At present, the solutions for slope stability monitoring generally include the following types: ground monitoring (e.g., ground displacement monitoring, subsidence monitoring, sliding zone monitoring, stress and strain monitoring, etc.), underground monitoring (e.g., inclinometer hole monitoring, soil pressure monitoring, etc.), remote sensing (e.g., synthetic aperture radar, optical remote sensing, etc.), and acoustic and microseismic monitoring (e.g., acoustic monitoring, microseismic monitoring, etc.). However, these slope stability monitoring solutions are not highly compatible with the dam of upstream tailings ponds, and the monitoring accuracy is not high. Summary of the invention

[0005] In order to solve the technical problems in the related art, the present invention provides a slope stability monitoring method and system for a tailings pond. The slope stability monitoring method for a tailings pond of the present invention can not only be well adapted to the dam body monitoring requirements of an upstream tailings pond, but also has high monitoring accuracy.

[0006] In order to achieve the above object, the technical solution adopted by the present invention includes:

[0007] According to a first aspect of the present invention, a slope stability monitoring method for a tailings pond is provided, which is applicable to a tailings pond constructed by an upstream damming method, and comprises the following steps:

[0008] Step S1: At preset time intervals, respectively obtain the infiltration line data of the tailings deposit beach, the surface displacement data of the tailings dam and the water surface line data of the tailings pond, and respectively calculate the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line;

[0009] Step S2: Determine slope stability:

[0010] When the rate of change of the infiltration line is greater than or equal to the first threshold; or, the rate of change of the surface displacement is greater than or equal to the second threshold; or, the rate of change of the water surface line is greater than or equal to the third threshold; then a warning signal is output;

[0011] When the rate of change of the wetting line is greater than or equal to the first threshold and the rate of change of the surface displacement is greater than or equal to the second threshold, but the rate of change of the water surface line is less than the third threshold; or, when the rate of change of the wetting line is greater than or equal to the first threshold and the rate of change of the water surface line is greater than or equal to the third threshold, but the rate of change of the surface displacement is less than the second threshold; or, when the rate of change of the surface displacement is greater than or equal to the second threshold and the rate of change of the water surface line is greater than or equal to the third threshold, but the rate of change of the wetting line is less than the first threshold; then a warning signal is output;

[0012] When the change rate of the infiltration line is greater than or equal to the first threshold, the change rate of the surface displacement is greater than or equal to the second threshold, and the change rate of the water surface line is greater than or equal to the third threshold; an emergency signal is output.

[0013] Optionally, in step S1, calculating the change rate of the infiltration line specifically includes:

[0014] Step S1-1-1: At preset time intervals, the groundwater level data in each observation well in the tailings deposit beach are obtained respectively, and the change rate corresponding to the groundwater level of each observation well is calculated according to the following formula:

[0015]

[0016] Where V i is the change rate of the groundwater level corresponding to the i-th observation well, Si t2 is the groundwater level data of the i-th observation well at time t2, Si t1 is the groundwater level data of the i-th observation well at time t1, where t1 and t2 are sampling times respectively;

[0017] Step S1-1-2: Determine the judgment threshold corresponding to each observation well according to the following formula:

[0018]

[0019] Where, T iis the decision threshold corresponding to the i-th observation well, α and β are set constants, L i is the horizontal distance between the axis of the i-th observation well and the dam body;

[0020] Step S1-1-3: Compare the difference between the groundwater level change rate of each observation well and the judgment threshold one by one, and calculate the average value

[0021]

[0022] The average This is considered as the rate of change of the wetting line.

[0023] Optionally, in step S1, calculating the rate of change of surface displacement specifically includes:

[0024] Step S1-2-1: At preset time intervals, obtain the position data of each surface mark point on the tailings dam and the position data of the fixed mark point outside the tailings pond, and calculate the change rate of the surface displacement corresponding to each surface mark point according to the following formula:

[0025]

[0026] Where Y i is the rate of change of the surface displacement corresponding to the i-th surface marker point, Li t4 is the position data of the i-th surface marker point at time t4, L d is the location data of the fixed mark point outside the tailings pond, Li t3 is the position data of the i-th surface marker point at time t3, where t3 and t4 are sampling times respectively;

[0027] Step S1-2-2: Calculate the surface displacement change rate of the tailings dam

[0028]

[0029] The surface displacement rate of change It is considered as the rate of change of surface displacement.

[0030] Optionally, in step S1, calculating the rate of change of the water surface line specifically includes:

[0031] At preset time intervals, obtain the height data and area data of the water surface line of the tailings pond, and calculate the change rate of the water surface line according to the following formula:

[0032]

[0033] In the formula, X is the rate of change of the water surface line, γ and δ are weight parameters, A t6 is the height data of the tailings pond water surface at time t6, A t5 is the height data of the tailings pond water surface at time t5, B t6 is the area data of the tailings pond water surface at time t6, B t5 It is the water surface area data of the tailings pond at time t5.

[0034] Optionally, in step S2,

[0035] The warning signal includes: an abnormal data part and a warning part, wherein the abnormal data part includes the abnormal ones among the following three: the change rate of the infiltration line, the change rate of the surface displacement, and the change rate of the water surface line; the warning part includes sound warning information and photoelectric warning information;

[0036] The warning signal includes: a warning data part and a danger warning part, wherein the warning data part includes two abnormalities among the following three: the change rate of the infiltration line, the change rate of the surface displacement, and the change rate of the water surface line; the danger warning part includes sound danger warning information and photoelectric danger warning information;

[0037] The emergency signal includes: an emergency data part and an emergency alarm part, wherein the emergency data part includes the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line; the emergency alarm part includes sound emergency information and photoelectric emergency information.

[0038] Optionally, the decibel value of the sound warning information is smaller than the decibel value of the sound danger alarm information, and the decibel value of the sound danger alarm information is smaller than the decibel value of the sound emergency alarm information.

[0039] Optionally, the photoelectric warning information, the photoelectric danger warning information and the photoelectric emergency warning information all include flashing lights, and the colors of the flashing lights of the three are different.

[0040] According to a second aspect of the present invention, there is also provided a slope stability monitoring system for a tailings pond, which is used to execute the slope stability monitoring method for a tailings pond according to any one of the technical solutions in the first aspect of the present invention, comprising:

[0041] A data acquisition module is used to respectively acquire the infiltration line data of the tailings deposit beach, the surface displacement data of the tailings accumulation dam and the water surface line data of the tailings pond;

[0042] A data calculation module is used to calculate the change rate of the wetting line, the change rate of the surface displacement and the change rate of the water surface line;

[0043] A judgment module is used to judge the stability of the slope according to the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line;

[0044] The signal output module is used to output an alert signal, a warning signal and an emergency signal respectively according to the judgment result of the judgment module.

[0045] According to the third aspect of the present invention, there is also provided a computer device, 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 steps of the slope stability monitoring method for a tailings pond as described in any one of the technical solutions in the first aspect of the present invention can be implemented.

[0046] According to the fourth aspect of the present invention, there is also provided a computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, it can implement the steps of the slope stability monitoring method for a tailings pond described in any one of the technical solutions in the first aspect of the present invention.

[0047] Beneficial effects:

[0048] 1. Through the above technical scheme, the present invention obtains the infiltration line data of the tailings deposition beach, the surface displacement data of the tailings accumulation dam and the water surface line data of the tailings pond, and calculates the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line respectively. In this way, the main key factors in the tailings pond constructed by the upstream dam construction method are included, which can be well adapted to the slope monitoring needs of the tailings pond constructed by the upstream dam construction method and has good accuracy.

[0049] At the same time, for these three key factors (the infiltration line data of the tailings deposition beach, the surface displacement data of the tailings dam and the water surface line data of the tailings pond), warnings of different emergency levels are respectively issued. That is, when only one of the three key factors is abnormal (that is, the change rate of the infiltration line is greater than or equal to the first threshold; or, the change rate of the surface displacement is greater than or equal to the second threshold; or, the change rate of the water surface line is greater than or equal to the third threshold), the corresponding warning signal is output; when two of the three key factors are abnormal, a corresponding warning signal is output; and when all three key factors are abnormal, an emergency signal is directly output to achieve warnings of different emergency levels, which is more conducive to improving the accuracy and safety of tailings pond monitoring.

[0050] 2. Other beneficial effects or advantages of the present invention will be described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0052] in:

[0053] Figure 1 It is a schematic flow chart of the steps of a slope stability monitoring method for a tailings pond provided by an exemplary embodiment of the present invention;

[0054] Figure 2 Schematic diagram of the layout of a tailings pond constructed using the upstream damming method. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0056] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] To facilitate understanding by relevant technical personnel, the reasons for the low adaptability and low monitoring accuracy of tailings ponds and related slope stability monitoring are explained below.

[0058] like Figure 2 As shown, the dam part of the existing tailings pond constructed by upstream damming generally includes a dam body, a filter layer and a protective layer, and the reservoir body generally includes a tailings deposition beach, a tailings accumulation dam and a tailings pond. This type of tailings pond has outstanding advantages such as simple dam construction technology, relatively simple management and low operating costs, and is widely used in my country.

[0059] However, this type of tailings pond also has many disadvantages. For example, the tailings deposit beach contains more fine-grained interlayers, poor permeability, and a higher position of the infiltration line, which leads to poor stability of the tailings deposit beach. At the same time, the dam body structure of the tailings accumulation dam has poor tightness. In addition, the tailings pond is located upstream of the tailings accumulation dam, and it has strong seepage pressure and accumulative amount, which leads to poor stability of the entire tailings pond and is prone to slope instability disasters.

[0060] For the slope monitoring of tailings ponds constructed by upstream damming, the key points include:

[0061] First, the seepage line. The seepage line of the tailings pond is the free water surface line of the seepage network. It is the lifeline of the tailings dam's safety. The height of the seepage line is directly related to the stability of the dam and its safety performance. In fact, the seepage field of the tailings dam is an extremely complex system. First of all, there is a large amount of tailings slurry sedimentation water in the tailings pond, and the water level is relatively stable. At the same time, when the tailings are discharged from the top of the tailings dam, the slurry water continues to seep downward during the process of the slurry flowing into the reservoir. In addition, there will be a lot of rainfall during the flood season. These factors form a huge seepage field in the tailings dam. Furthermore, the tailings deposition body is a non-homogeneous body, and the discharge position needs to be frequently replaced; the dam body is constantly increasing; and during the entire service period of the tailings pond, the ore source and mineral processing process may change, and the tailings performance will naturally change. Therefore, the seepage line has become one of the important contents of tailings pond safety monitoring.

[0062] Second, dam displacement. When a tailings dam breaks, dam displacement is a direct indicator of the evolution of the disaster. Therefore, by understanding the deformation of the downstream slope of the dam, the deformation rate and development speed of the tailings dam can be discovered in time, which is conducive to the safety supervision departments and enterprises to make scientific emergency decisions and take emergency measures in time, so as to avoid the occurrence of disasters or reduce the harm caused by disasters.

[0063] Third, the reservoir water level. There is a large amount of tailings slurry sedimentation water in the tailings pond. The purpose of water level monitoring is to judge whether the flood control capacity of the reservoir meets the safety requirements based on the height of the water level. Specifically, a perfect design will give the flood depth required for flood control in the design text, and require that when designing the flood level, the minimum safety overheight and minimum safety dry beach length requirements specified in the design must be met at the same time. Therefore, accurately grasping the reservoir water level position can effectively avoid flood overtopping and dam breach accidents during the flood season, and it is also beneficial for safety supervision departments and enterprises to intuitively understand and grasp whether the reservoir water level has reached the pre-flood limit water level required by the design before the flood season arrives. It can be seen that the reservoir water level is also one of the important contents of tailings pond safety monitoring.

[0064] However, the existing monitoring schemes cannot accurately grasp the above three key points, especially the infiltration line and reservoir water level. Among them, for the infiltration line, the existing monitoring schemes cannot accurately grasp the changes in the infiltration line of the foundation (i.e., the tailings deposition beach) in the tailings pond. For the reservoir water level, the existing monitoring schemes generally only involve changes in the water level height of the tailings pond, but do not involve changes in the water surface area of ​​the tailings pond. In the tailings pond, due to the variability of the tailings accumulation dam, it is often possible that the water level does not change but the water surface area changes (for example, with the continuous dumping of tailings, part of the tailings pond collapses, which leads to the situation where the water level does not change but the water surface area increases).

[0065] Therefore, the existing monitoring scheme is not suitable for tailings ponds constructed by the upstream damming method, and the monitoring accuracy is not high.

[0066] In view of this, the present invention provides a new solution, namely, a slope stability monitoring method for tailings ponds, which can be well adapted to the monitoring needs of tailings ponds constructed by upstream damming method and has high monitoring accuracy.

[0067] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0068] Example 1

[0069] like Figure 1 As shown, according to a first aspect of the present invention, a slope stability monitoring method for a tailings pond is provided, which is applicable to a tailings pond constructed by an upstream damming method, and comprises the following steps:

[0070] Step S1: At preset time intervals, respectively obtain the infiltration line data of the tailings deposit beach, the surface displacement data of the tailings dam and the water surface line data of the tailings pond, and respectively calculate the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line;

[0071] Step S2: Determine slope stability:

[0072] When the rate of change of the infiltration line is greater than or equal to the first threshold; or, the rate of change of the surface displacement is greater than or equal to the second threshold; or, the rate of change of the water surface line is greater than or equal to the third threshold; then a warning signal is output;

[0073] When the rate of change of the wetting line is greater than or equal to the first threshold and the rate of change of the surface displacement is greater than or equal to the second threshold, but the rate of change of the water surface line is less than the third threshold; or, when the rate of change of the wetting line is greater than or equal to the first threshold and the rate of change of the water surface line is greater than or equal to the third threshold, but the rate of change of the surface displacement is less than the second threshold; or, when the rate of change of the surface displacement is greater than or equal to the second threshold and the rate of change of the water surface line is greater than or equal to the third threshold, but the rate of change of the wetting line is less than the first threshold; then a warning signal is output;

[0074] When the change rate of the infiltration line is greater than or equal to the first threshold, the change rate of the surface displacement is greater than or equal to the second threshold, and the change rate of the water surface line is greater than or equal to the third threshold; an emergency signal is output.

[0075] Through the above technical scheme, the present invention respectively obtains the infiltration line data of the tailings deposition beach, the surface displacement data of the tailings accumulation dam and the water surface line data of the tailings pond, and respectively calculates the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line. In this way, the main key factors in the tailings pond constructed by the upstream dam construction method are included, which can be well adapted to the slope monitoring needs of the tailings pond constructed by the upstream dam construction method and has good accuracy.

[0076] At the same time, for these three key factors (the infiltration line data of the tailings deposition beach, the surface displacement data of the tailings dam and the water surface line data of the tailings pond), warnings of different emergency levels are respectively issued. That is, when only one of the three key factors is abnormal (that is, the change rate of the infiltration line is greater than or equal to the first threshold; or, the change rate of the surface displacement is greater than or equal to the second threshold; or, the change rate of the water surface line is greater than or equal to the third threshold), the corresponding warning signal is output; when two of the three key factors are abnormal, a corresponding warning signal is output; and when all three key factors are abnormal, an emergency signal is directly output to achieve warnings of different emergency levels, which is more conducive to improving the accuracy and safety of tailings pond monitoring.

[0077] In this embodiment, it can be understood that the first threshold, the second threshold and the third threshold can be adjusted according to the specific conditions of the tailings pond, and the present invention does not specifically limit this.

[0078] In one embodiment of the present invention, in step S1 of the present invention, calculating the change rate of the infiltration line may specifically include:

[0079] Step S1-1-1: At preset time intervals, the groundwater level data in each observation well in the tailings deposit beach are obtained respectively, and the change rate corresponding to the groundwater level of each observation well is calculated according to the following formula:

[0080]

[0081] Where V i is the change rate of the groundwater level corresponding to the i-th observation well, Si t2 is the groundwater level data of the i-th observation well at time t2, Si t1 is the groundwater level data of the i-th observation well at time t1, where t1 and t2 are sampling times respectively;

[0082] Step S1-1-2: Determine the judgment threshold corresponding to each observation well according to the following formula:

[0083]

[0084] Where, T iis the decision threshold corresponding to the i-th observation well, α and β are set constants, L i is the horizontal distance between the axis of the i-th observation well and the dam body;

[0085] Step S1-1-3: Compare the difference between the groundwater level change rate of each observation well and the judgment threshold one by one, and calculate the average value

[0086]

[0087] The average This is considered as the rate of change of the wetting line.

[0088] In this way, through the above technical scheme, the changes in the infiltration line of the tailings deposit beach can be accurately and reliably determined, and each observation well has a corresponding judgment threshold, which is positively correlated with the distance between the observation well and the dam body, that is, the farther the observation well is from the dam body, the larger the judgment threshold. This is because the measured water level of the observation well farther away from the dam body is more easily affected by the tailings pond, rainfall and moisture carried by the tailings dumping, so its judgment threshold is larger, so that the accuracy of monitoring can be effectively improved.

[0089] In addition, it should be noted that, for the determination formula of the judgment threshold, α and β are set constants, which can be adjusted according to actual conditions to adapt to different tailings ponds, and α and β are used to adjust the growth rate and amplitude of the judgment threshold, which can be well adapted to the detection needs of most tailings ponds. At the same time, using this determination formula to calculate the judgment threshold, the value of the judgment threshold increases with L i It will gradually increase with the growth, and the growth rate will gradually slow down, which can be well adapted to the tailings pond (in the tailings pond, the farther away from the dam body, the smaller the effect of seepage on the instability of the dam slope. Therefore, the slowing down of the growth rate will make the judgment threshold gradually tend to a certain value, which can be more in line with the actual situation of the tailings pond).

[0090] In one embodiment of the present invention, in step S1 of the present invention, calculating the rate of change of surface displacement may specifically include:

[0091] Step S1-2-1: At preset time intervals, obtain the position data of each surface mark point on the tailings dam and the position data of the fixed mark point outside the tailings pond, and calculate the change rate of the surface displacement corresponding to each surface mark point according to the following formula:

[0092]

[0093] Where Y i is the rate of change of the surface displacement corresponding to the i-th surface marker point, Lit4 is the position data of the i-th surface marker point at time t4, L d is the location data of the fixed mark point outside the tailings pond, Li t3 is the position data of the i-th surface marker point at time t3, where t3 and t4 are sampling times respectively;

[0094] Step S1-2-2: Calculate the surface displacement change rate of the tailings dam

[0095]

[0096] The surface displacement rate of change It is considered as the rate of change of surface displacement.

[0097] In this way, through the above technical solution, the rate of change of the surface displacement of the tailings dam can be accurately obtained, thereby realizing the surface displacement monitoring of the tailings dam.

[0098] In one embodiment of the present invention, in step S1 of the present invention, calculating the rate of change of the water surface line may specifically include:

[0099] At preset time intervals, obtain the height data and area data of the water surface line of the tailings pond, and calculate the change rate of the water surface line according to the following formula:

[0100]

[0101] In the formula, X is the rate of change of the water surface line, γ and δ are weight parameters, A t6 is the height data of the tailings pond water surface at time t6, A t5 is the height data of the tailings pond water surface at time t5, B t6 is the area data of the tailings pond water surface at time t6, B t5 It is the area data of the tailings pond water surface at time t5.

[0102] In this way, through the above-mentioned technical scheme, compared with the existing related technologies, the rate of change of the water surface line calculated by the present invention is a combination of the height data and area data of the tailings pond water surface, which can be well adapted to the actual situation of the tailings pond (especially the situation where the water level has not changed but the water surface area has changed), can be well adapted to the monitoring needs of the tailings pond, and has good accuracy.

[0103] In one embodiment of the present invention, in step S2 of the present invention,

[0104] The warning signal may include: an abnormal data part and a warning part, wherein the abnormal data part includes an abnormal one of the following three: a change rate of the infiltration line, a change rate of the surface displacement, and a change rate of the water surface line; the warning part includes sound warning information and photoelectric warning information;

[0105] The warning signal may include: a warning data part and a danger warning part, wherein the warning data part includes two abnormalities among the following three: the change rate of the infiltration line, the change rate of the surface displacement, and the change rate of the water surface line; the danger warning part includes sound danger warning information and photoelectric danger warning information;

[0106] The emergency signal may include: an emergency data part and an emergency alarm part, wherein the emergency data part includes the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line; the emergency alarm part includes sound emergency information and photoelectric emergency information.

[0107] In one embodiment of the present invention, the decibel value of the sound warning information of the present invention is smaller than the decibel value of the sound danger alarm information, and the decibel value of the sound danger alarm information is smaller than the decibel value of the sound emergency alarm information.

[0108] In one embodiment of the present invention, the photoelectric warning information, the photoelectric danger warning information and the photoelectric emergency warning information of the present invention all include flashing lights, and the colors of the flashing lights of the three are different.

[0109] According to a second aspect of the present invention, there is also provided a slope stability monitoring system for a tailings pond, which is used to execute the slope stability monitoring method for a tailings pond according to any one of the technical solutions in the first aspect of the present invention, comprising:

[0110] A data acquisition module is used to respectively acquire the infiltration line data of the tailings deposit beach, the surface displacement data of the tailings accumulation dam and the water surface line data of the tailings pond;

[0111] A data calculation module is used to calculate the change rate of the wetting line, the change rate of the surface displacement and the change rate of the water surface line;

[0112] A judgment module is used to judge the stability of the slope according to the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line;

[0113] The signal output module is used to output an alert signal, a warning signal and an emergency signal respectively according to the judgment result of the judgment module.

[0114] Through the above technical solution, the slope stability monitoring system for tailings ponds of the present invention can be well adapted to the monitoring needs of tailings ponds constructed by the upstream damming method, and has high monitoring accuracy.

[0115] According to the third aspect of the present invention, there is also provided a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the slope stability monitoring method for a tailings pond in any one of the technical solutions in the first aspect of the present invention can be implemented.

[0116] It is understood that in this embodiment, the memory may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a read-only memory, a flash memory, a hard disk or a solid state drive; in addition, the memory may also include a combination of the above-mentioned types of memory. The present invention does not specifically limit this.

[0117] Similarly, the processor may be a processor that implements or executes various exemplary logic steps described in conjunction with the disclosure of the present invention. The processor may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It may implement or execute various exemplary logic steps described in conjunction with the disclosure of the present invention. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0118] According to the fourth aspect of the present invention, there is also provided a computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, it can implement the steps of the slope stability monitoring method for tailings ponds in any one of the technical solutions in the first aspect of the present invention.

[0119] In this embodiment, the computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (non-exhaustive list) of computer readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a register, a hard disk, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above, or any other form of computer readable storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in an application-specific integrated circuit (ASIC). In embodiments of the present invention, computer-readable storage media may be any tangible media that contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0120] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for monitoring slope stability of a tailings pond, characterized in that: The tailings pond suitable for upstream dam construction includes the following steps: Step S1: At preset time intervals, respectively obtain the infiltration line data of the tailings deposit beach, the surface displacement data of the tailings dam and the water surface line data of the tailings pond, and respectively calculate the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line; Step S2: Determine slope stability: When the rate of change of the infiltration line is greater than or equal to the first threshold; or, the rate of change of the surface displacement is greater than or equal to the second threshold; or, the rate of change of the water surface line is greater than or equal to the third threshold; then a warning signal is output; When the rate of change of the wetting line is greater than or equal to the first threshold and the rate of change of the surface displacement is greater than or equal to the second threshold, but the rate of change of the water surface line is less than the third threshold; or, when the rate of change of the wetting line is greater than or equal to the first threshold and the rate of change of the water surface line is greater than or equal to the third threshold, but the rate of change of the surface displacement is less than the second threshold; or, when the rate of change of the surface displacement is greater than or equal to the second threshold and the rate of change of the water surface line is greater than or equal to the third threshold, but the rate of change of the wetting line is less than the first threshold; then a warning signal is output; When the change rate of the infiltration line is greater than or equal to the first threshold, the change rate of the surface displacement is greater than or equal to the second threshold, and the change rate of the water surface line is greater than or equal to the third threshold; an emergency signal is output.

2. The slope stability monitoring method for a tailings pond according to claim 1, characterized in that: In step S1, calculating the change rate of the infiltration line specifically includes: Step S1-1-1: At preset time intervals, the groundwater level data in each observation well in the tailings deposit beach are obtained respectively, and the change rate corresponding to the groundwater level of each observation well is calculated according to the following formula: Where V i is the change rate of the groundwater level corresponding to the i-th observation well, Si t2 is the groundwater level data of the i-th observation well at time t2, Si t1 is the groundwater level data of the i-th observation well at time t1, where t1 and t2 are sampling times respectively; Step S1-1-2: Determine the judgment threshold corresponding to each observation well according to the following formula: Where, T i is the decision threshold corresponding to the i-th observation well, α and β are set constants, L i is the horizontal distance between the axis of the i-th observation well and the dam body; Step S1-1-3: Compare the difference between the groundwater level change rate of each observation well and the judgment threshold one by one, and calculate the average value The average This is considered as the rate of change of the wetting line.

3. The slope stability monitoring method for a tailings pond according to claim 1, characterized in that: In step S1, calculating the rate of change of surface displacement specifically includes: Step S1-2-1: At preset time intervals, obtain the position data of each surface mark point on the tailings dam and the position data of the fixed mark point outside the tailings pond, and calculate the change rate of the surface displacement corresponding to each surface mark point according to the following formula: Where Y i is the rate of change of the surface displacement corresponding to the i-th surface marker point, Li t4 is the position data of the i-th surface marker point at time t4, L d is the location data of the fixed mark point outside the tailings pond, Li t3 is the position data of the i-th surface marker point at time t3, where t3 and t4 are sampling times respectively; Step S1-2-2: Calculate the surface displacement change rate of the tailings dam The surface displacement rate of change It is considered as the rate of change of surface displacement.

4. The slope stability monitoring method for a tailings pond according to claim 1, characterized in that: In step S1, calculating the rate of change of the water surface line specifically includes: At preset time intervals, obtain the height data and area data of the water surface line of the tailings pond, and calculate the change rate of the water surface line according to the following formula: In the formula, X is the rate of change of the water surface line, γ and δ are weight parameters, A t6 is the height data of the tailings pond water surface at time t6, A t5 is the height data of the tailings pond water surface at time t5, B t6 is the area data of the tailings pond water surface at time t6, B t5 It is the water surface area data of the tailings pond at time t5.

5. The slope stability monitoring method for a tailings pond according to claim 1, characterized in that: In step S2, The warning signal includes: an abnormal data part and a warning part, wherein the abnormal data part includes the abnormal ones among the following three: the change rate of the infiltration line, the change rate of the surface displacement, and the change rate of the water surface line; the warning part includes sound warning information and photoelectric warning information; The warning signal includes: a warning data part and a danger warning part, wherein the warning data part includes two abnormalities among the following three: the change rate of the infiltration line, the change rate of the surface displacement, and the change rate of the water surface line; the danger warning part includes sound danger warning information and photoelectric danger warning information; The emergency signal includes: an emergency data part and an emergency alarm part, wherein the emergency data part includes the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line; the emergency alarm part includes sound emergency information and photoelectric emergency information.

6. The slope stability monitoring method for a tailings pond according to claim 5, characterized in that: The decibel value of the sound warning information is smaller than the decibel value of the sound danger alarm information, and the decibel value of the sound danger alarm information is smaller than the decibel value of the sound emergency alarm information.

7. The slope stability monitoring method for a tailings pond according to claim 5, characterized in that: The photoelectric warning information, the photoelectric danger warning information and the photoelectric emergency warning information all include flashing lights, and the colors of the flashing lights of the three are different.

8. A slope stability monitoring system for a tailings pond, characterized in that: A method for monitoring the slope stability of a tailings pond according to any one of claims 1 to 7, comprising: A data acquisition module is used to respectively acquire the infiltration line data of the tailings deposit beach, the surface displacement data of the tailings accumulation dam and the water surface line data of the tailings pond; A data calculation module is used to calculate the change rate of the wetting line, the change rate of the surface displacement and the change rate of the water surface line; A judgment module is used to judge the stability of the slope according to the change rate of the infiltration line, the change rate of the surface displacement and the change rate of the water surface line; The signal output module is used to output an alert signal, a warning signal and an emergency signal respectively according to the judgment result of the judgment module.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the slope stability monitoring method for a tailings pond described in any one of claims 1 to 7 can be implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the slope stability monitoring method for a tailings pond described in any one of claims 1 to 7 can be implemented.

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