CN116206423A - Rare earth slope slip disaster monitoring and early warning method and device - Google Patents
Rare earth slope slip disaster monitoring and early warning method and device Download PDFInfo
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Abstract
The invention discloses a rare earth slope slip disaster monitoring and early warning method and device, wherein the method comprises the following steps: acquiring monitoring point information of a slope slip region of the rare earth ore; the three-dimensional monitoring and early warning system of the dotted line and the surface body is arranged according to the information of the monitoring points and comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter; the method comprises the steps of monitoring and calculating a parameter index value of a slope slip region by using a three-dimensional monitoring and early warning system of a point line and a surface body, wherein the parameter index value comprises a resistivity change value, a wave speed ratio of transverse sound waves to longitudinal sound waves, a displacement change value and a water level change value; respectively comparing the parameter index values with corresponding early warning thresholds to obtain comparison results; and carrying out stability grading early warning on the slope sliding region of the rare earth ore according to the comparison result to obtain an early warning result. The three-dimensional monitoring and multi-index comprehensive early warning of the sliding of the rare earth side slope are realized, and the problems of single index and large workload in multi-parameter of the existing side slope sliding pre-judgment are avoided.
Description
Technical Field
The invention belongs to the technical field of geological disaster monitoring, early warning and safety monitoring, in particular relates to a resistivity imaging technology and a sound wave imaging technology, and particularly relates to a rare earth slope slip disaster monitoring and early warning method and device.
Background
Rare earth is used as a key national strategic resource and is widely applied to important fields such as electronics, military, new materials and the like. The geological type of rare earth ore is mainly loose sand clay, the mining mode is mainly an in-situ leaching technology, and because a large amount of leaching solution is required to be injected into a mountain body by the mining method, the internal stress of the mine slope body can be changed, so that the slope sliding is greatly threatened in the mining process. Therefore, the establishment of the slope slip disaster monitoring and early warning system is an effective method for reducing the loss caused by the disaster.
At present, the research of a slope slip disaster monitoring and early warning method has the problems of single one-sided performance of an early judging index, complex and excessive parameters, complex actual operation process, large workload and the like.
Disclosure of Invention
The invention provides a rare earth slope slip disaster monitoring and early warning method and device, which realize three-dimensional monitoring of a dotted line surface body through a three-dimensional monitoring and early warning system of the dotted line surface body, and comprehensively perform stability grading early warning on a slope slip area of a rare earth mine through a resistivity change value, a wave speed ratio of transverse sound waves to longitudinal sound waves, a displacement change value and a water level change value, thereby realizing three-dimensional monitoring and multi-index comprehensive early warning on the rare earth slope slip and avoiding the problem of large workload when indexes of the existing slope slip prediction are single and multi-parameter.
In order to solve the technical problems, the invention adopts the following technical scheme:
in a first aspect, a method for monitoring and early warning a rare earth slope slip disaster is provided, including:
acquiring monitoring point information of a slope slip region of the rare earth ore;
the system comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter;
the method comprises the steps of monitoring and calculating a parameter index value of a slope slip region by using a three-dimensional monitoring and early warning system of a point line and a surface body, wherein the parameter index value comprises a resistivity change value, a wave speed ratio of transverse sound waves to longitudinal sound waves, a displacement change value and a water level change value;
respectively comparing the parameter index values with corresponding early warning thresholds to obtain comparison results;
and carrying out stability grading early warning on the slope sliding region of the rare earth ore according to the comparison result to obtain an early warning result.
Further, acquiring monitoring point information of a slope slip region of the rare earth ore, including:
performing on-site investigation on rare earth ores to obtain investigation information;
acquiring local hydrogeological environment information of rare earth ores;
according to the investigation information and the local hydrogeological environment information, analyzing to obtain a hidden danger area of potential slip of the side slope of the rare earth ore as a side slope slip area;
according to a preset three-dimensional monitoring and early warning mechanism of the dotted line and the surface body, the positions and the number of monitoring points are determined in a slope sliding area, monitoring point information is obtained, and the monitoring points comprise the arrangement points of electrodes of a resistivity measuring instrument, the arrangement points of an acoustic emission sensor and an acoustic receiving sensor, the arrangement points of a displacement monitor and the arrangement points of a water level meter.
Further, a three-dimensional monitoring and early warning system for the dotted line and the surface body is arranged according to the information of the monitoring points, and the system comprises:
arranging an electrode of the resistivity measuring instrument, an acoustic emission sensor, an acoustic receiving sensor, a displacement monitor and a water level measuring meter according to the information of the monitoring points;
connecting an electrode of the resistivity measuring instrument with the resistivity measuring instrument through a cable to obtain a resistivity monitoring imaging subsystem;
connecting the acoustic emission sensor and the acoustic receiving sensor with an acoustic signal processor to obtain a ground sound monitoring subsystem;
and obtaining the three-dimensional monitoring and early warning system of the dotted line and the surface body according to the resistivity monitoring and imaging subsystem, the ground sound monitoring subsystem, the displacement monitor and the water level meter.
Further, the method for monitoring and calculating the parameter index value of the slope sliding region by using the three-dimensional monitoring and early warning system of the dotted line and the surface body comprises the following steps:
acquiring the resistivity parameter of the sliding region of the side slope according to a preset monitoring period by using a resistivity monitoring imaging subsystem, and calculating a resistivity change value according to the resistivity parameter;
transmitting and receiving propagation parameters of transverse sound waves and longitudinal sound waves according to a preset monitoring period by using the ground sound monitoring subsystem, and calculating according to the propagation parameters to obtain the wave speed ratio of the transverse sound waves and the longitudinal sound waves of the slope sliding region;
monitoring displacement coordinate values according to a preset monitoring period by using a displacement monitor, and calculating a displacement change value of a slope sliding region according to the displacement change value;
monitoring a water level value according to a preset monitoring period by using a water level meter, and calculating to obtain a water level change value of a slope sliding region according to the water level value;
and combining the resistivity change value, the wave speed ratio of the transverse sound wave to the longitudinal sound wave, the displacement change value and the water level change value into a plurality of sequences to obtain the parameter index value of the side slope sliding region.
Further, the parameter index values are respectively compared with corresponding early warning thresholds to obtain comparison results, and the method comprises the following steps:
acquiring a preset early warning threshold, wherein the early warning threshold comprises a resistivity early warning discrimination threshold, a wave speed ratio early warning discrimination threshold, a displacement early warning discrimination threshold and a water level early warning discrimination threshold;
comparing the resistivity change value in the parameter index value with a resistivity early warning judging threshold value to obtain a first comparison result;
comparing the wave speed ratio of the transverse sound wave and the longitudinal sound wave with a wave speed ratio early warning judgment threshold value to obtain a second comparison result;
comparing the displacement variation value with a displacement early warning discrimination threshold value to obtain a third comparison result;
comparing the water level change value with a water level early warning judging threshold value to obtain a fourth comparison result;
and obtaining a comparison result according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result.
Further, obtaining a comparison result according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result, includes:
when the first comparison result is that the resistivity change value is larger than the resistivity early warning judging threshold value, obtaining a first ratio of 1;
when the first comparison result is that the resistivity change value is not larger than the resistivity early warning judging threshold value, obtaining a first ratio of 0;
when the second comparison result is that the wave speed ratio of the transverse sound wave to the longitudinal sound wave is smaller than the wave speed ratio early warning judging threshold value, obtaining a second ratio of 1;
when the second comparison result is that the wave speed ratio of the transverse sound wave to the longitudinal sound wave is not smaller than the wave speed ratio early warning judging threshold value, obtaining a second ratio of 0;
when the displacement change value is larger than the displacement early warning judging threshold value as the third comparison result, a third ratio is 1;
when the displacement change value is not larger than the displacement early warning judging threshold value as the third comparison result, a third ratio is 0;
when the fourth comparison result is that the water level change value is larger than the water level early warning judging threshold value, a fourth ratio value is 1;
when the fourth comparison result is that the water level change value is not greater than the water level early warning judging threshold value, a fourth ratio value of 0 is obtained;
and obtaining a comparison result according to the first ratio, the second ratio, the third ratio and the fourth ratio.
Further, the stability grading early warning is carried out on the slope sliding region of the rare earth ore according to the comparison result, and an early warning result is obtained, and the method comprises the following steps:
adding the first ratio, the second ratio, the third ratio and the fourth ratio in the comparison result to obtain an early warning value;
and matching the early warning value with a preset stability grading early warning table, and determining an early warning grade to obtain an early warning result.
Further, matching is performed according to the early warning value and a preset stability grading early warning table, an early warning grade is determined, and an early warning result is obtained, including:
matching the early warning value with a preset stability grading early warning table;
when the early warning value is 4, determining that the early warning level is the highest dangerous level;
when the early warning value is 3 and the second ratio or the fourth ratio is 0, determining that the early warning level is the highest dangerous level;
when the early warning value is 3 and the first ratio or the third ratio is 0, determining that the early warning level is a medium danger level;
when the early warning value is smaller than 3 and the third ratio is 1, determining that the early warning level is a medium danger level;
when the early warning value is smaller than 3 and the third ratio is 0, determining that the early warning level is the lowest dangerous level;
and obtaining an early warning result according to the early warning grade.
Further, the method further comprises:
carrying out validity analysis on the early warning result to obtain valid early warning data and missing report false alarm data;
adjusting and optimizing the early warning threshold according to the missing report false report data to obtain an early warning optimization threshold;
and replacing the early warning threshold value with an early warning optimization threshold value.
In a second aspect, a rare earth slope slip disaster monitoring and early warning device is provided, including:
the dotted line surface three-dimensional monitoring and early warning system is arranged in the slope sliding area of the rare earth mine and comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter;
and the central processing unit is connected with the point-line-surface-body three-dimensional monitoring and early warning system and is used for realizing the slope slip disaster monitoring and early warning method in the first aspect.
The invention has the beneficial effects that:
acquiring monitoring point information of a slope sliding region of rare earth ore, arranging a point-line surface body three-dimensional monitoring and early warning system according to the monitoring point information, wherein the point-line surface body three-dimensional monitoring and early warning system comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter, monitoring and early warning the slope sliding region by using the point-line surface body three-dimensional monitoring and early warning system, calculating to obtain parameter index values of the slope sliding region, wherein the parameter index values comprise a resistivity change value, a wave ratio of transverse sound waves to longitudinal sound waves, a displacement change value and a water level change value, comparing the parameter index values with corresponding early warning thresholds respectively to obtain comparison results, and carrying out stability grading early warning on the slope sliding region of the rare earth ore according to the comparison results to obtain early warning results. The three-dimensional monitoring and early warning system for the point line and the surface of the rare earth mine realizes three-dimensional monitoring and early warning for the multiple indexes of the rare earth mine slope slip by comprehensively stabilizing and grading the slope slip area through the resistivity change value, the wave speed ratio of transverse sound wave to longitudinal sound wave, the displacement change value and the water level change value, and solves the problems of single index and large workload of the existing slope slip pre-judging when the indexes are single and multiple.
Drawings
FIG. 1 is a flow chart of a rare earth side slope slip disaster monitoring and early warning method of the present invention;
FIG. 2 is a block diagram of the rare earth slope slip disaster monitoring and early warning device of the invention;
FIG. 3 is a longitudinal section view of the rare earth slope of the present invention for slip monitoring and early warning.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, the embodiment of the invention provides a rare earth side slope slip disaster monitoring and early warning method, which comprises the following steps:
101, acquiring monitoring point information of a slope slip region of rare earth ore;
when the rare earth ore is mined, the geological type of the rare earth ore is mainly loose sand clay, the mining mode is mainly an in-situ leaching technology, a large amount of leaching solution is required to be injected into a mountain body by the mining method, so that the internal stress of a mine slope body is changed, and the slope slip is greatly threatened in the mining process, therefore, the rare earth ore is required to be monitored and early warned, the rare earth ore is required to be subjected to on-site investigation before being monitored and early warned, investigation information is obtained, the local hydrogeological environment information of the rare earth ore is obtained, the hidden danger area of potential slip of the slope of the rare earth ore is obtained through analysis according to the investigation information and the local hydrogeological environment information, the position and the number of monitoring points are determined in the slope slip area according to a preset dotted line-surface body three-dimensional monitoring early warning mechanism, and the monitoring point information is obtained, and the monitoring points comprise the arrangement points of electrodes of a resistivity measuring instrument, the arrangement points of acoustic emission sensor and an acoustic receiving sensor, the arrangement points of a displacement monitor and the arrangement points of a water level meter. The specific layout is shown in fig. 3, and fig. 3 is a monitored site longitudinal section diagram, wherein 301 is a clay layer, 302 is a mineral layer, 303 is a mineral immersing layer, 304 is a base rock layer, 305 is a liquid accumulation ditch, 306 is a sliding surface, 307 is a liquid injection well, 308 is a resistivity monitoring imaging subsystem, 309 is an electrode, 310 is a ground sound monitoring subsystem, 311 is a deep displacement monitor, 312 is a water level meter, 313 is a landslide monitoring displacement monitor, and 314 is a ground surface displacement monitor.
102, distributing a point-line-surface-body three-dimensional monitoring and early warning system according to monitoring point information;
the method comprises the steps of arranging electrodes, acoustic emission sensors, acoustic receiving sensors, displacement monitors and water level meters of a resistivity measuring instrument according to monitoring point information; for example, the displacement monitor may be a surface inclinometer, a borehole inclinometer, etc., and the water level meter may be an osmometer, pore water pressure meter, etc.;
connecting an electrode of the resistivity measuring instrument with the resistivity measuring instrument through a cable to obtain a resistivity monitoring imaging subsystem;
connecting the acoustic emission sensor and the acoustic receiving sensor (i.e. the acquisition station) with an acoustic signal processor to obtain a ground sound monitoring subsystem, wherein the acoustic signal processor can be specifically acoustic signal processing software running on one processor;
the resistivity monitoring imaging subsystem, the ground sound monitoring subsystem, the displacement monitor and the water level meter are connected with the central processing unit to obtain the point-line-surface-body three-dimensional monitoring and early warning system of the point-line-surface-body three-dimensional monitoring and early warning system.
103, monitoring and calculating to obtain parameter index values of the slope slip region by using a three-dimensional monitoring and early warning system of the dotted line and the surface body;
the system comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter, wherein the dotted line and surface three-dimensional monitoring and early warning system can obtain corresponding parameters by monitoring according to a preset monitoring period respectively, so that corresponding index values are obtained by calculation, and the respective execution processes are as follows:
acquiring the resistivity parameter of the sliding region of the side slope according to a preset monitoring period by using a resistivity monitoring imaging subsystem, and calculating a resistivity change value according to the resistivity parameter;
let the moment of starting monitoring be t 0 The monitoring period is t, and t is recorded 0 The time resistivity is
The resistivity at t is R t The calculation formula of the resistivity change value Δr is as follows:
since different substances have different conductive properties, resistivity (Resistivity) is a physical quantity used to represent the conductive ability of various substances. Assuming that the resistance of the side slope body is R (Ω), the distance between the two electrodes is L (m), and the area of the electrodes is S (m 2 ) The calculation formula for obtaining the resistivity ρ (Ω·m) from the physical knowledge is as follows:
ρ＝RS/L；
electrical for use in early warning applications based on resistivity imaging technologyThe resistivity is typically apparent resistivity ρ (Ω·m), knowing a and B as the supply electrodes and M and N as the measurement electrodes. Recording DeltaU MN For the potential difference between the two measuring electrodes M and N, I is the current and k is the electrode device coefficient. The calculation formula of ρ (Ω·m) is as follows:
ρ＝kΔU MN /I；
regarding the value of k, the values of different measuring devices may be different, and general calculation formulas are as follows:
transmitting and receiving propagation parameters of transverse sound waves and longitudinal sound waves according to a preset monitoring period by using the ground sound monitoring subsystem, and calculating according to the propagation parameters to obtain the wave speed ratio of the transverse sound waves and the longitudinal sound waves of the slope sliding region;
according to the n acoustic emission sensors arranged in the side slope sliding area, pulse acoustic wave signals are alternately emitted according to a preset monitoring period, the speeds of transverse acoustic wave S waves and longitudinal acoustic wave P waves are calculated in real time, specifically, according to the known positions of the acoustic emission sensors and the acoustic receiving sensors, the acoustic receiving sensors receive the P waves and the S waves, the emission time points are subtracted from the receiving time points, so that the propagation duration is obtained, and finally, the wave speeds of the P waves and the S waves can be obtained according to the distance between the acoustic emission sensors and the acoustic receiving sensors divided by the propagation duration;
let the acoustic wave signal of the current transmitted pulse be the ith electroacoustic transducer C i Record the emission time as t i Let j-th acoustic receiving sensor C j The time of receiving the sound wave signal is t j Calculating the current pulse type sound wave signal at C according to the recorded time data and the position coordinates of the underwater acoustic sensor i And C j Path S between ij On propagation velocity, i.e. path S ij A current wave velocity value;
recording the receiving time point of the P wave as t p Wave velocity v p The method comprises the steps of carrying out a first treatment on the surface of the The receiving time point of the S wave is t s Wave velocity v s The expression is as follows:
v p ＝S ij /t p ；
v s ＝S ij /t s ；
as can be seen from the wave speed ratio expressions of the S wave and the P wave, only the receiving time points of the S wave and the P wave need to be obtained, and the receiving time points are calculated according to the existing receiving time calculating method, for example, a short time window method STA/LTA (short time window average/long time-window average);
monitoring displacement coordinate values according to a preset monitoring period by using a displacement monitor, and calculating a displacement change value of a slope sliding region according to the displacement change value;
the displacement coordinate values of the slope sliding areas at different moments can be directly obtained by a displacement monitor and recorded as t 0 The coordinates at the time are
The coordinates of the target monitoring points are S when t is recorded t (x t ，y t ，z t ) The displacement variation value deltas is calculated as follows:
monitoring a water level value according to a preset monitoring period by using a water level meter, and calculating to obtain a water level change value of a slope sliding region according to the water level value;
the water level values of the target monitoring points at different moments can be directly obtained according to a water level measuring meter and recorded as t 0 The water level value is
The water level value at t is H t The calculation formula of the water level variation value Δh is as follows:
the resistivity change value delta R, the wave velocity ratio of transverse sound wave and longitudinal sound wave
The displacement change value delta S and the water level change value delta H are combined into a plurality of sequences to obtain parameter index values (delta R,/in) of the side slope sliding region>
ΔS、ΔH)。
104, respectively comparing the parameter index values with corresponding early warning thresholds to obtain comparison results;
wherein, the parameter index value (DeltaR,
Δs, Δh), and setting early warning thresholds K1, K2, K3, K4 for the current slope stability and slip disaster history data according to the four index change conditions and experience values in the parameter index values, wherein K1 corresponds to Δr, and K2 corresponds to ∈>
And K3 corresponds to delta S, K4 corresponds to delta H, and corresponding comparison is performed respectively to obtain a comparison result corresponding to each parameter index value.
And 105, performing stability grading early warning on the slope sliding region of the rare earth ore according to the comparison result to obtain an early warning result.
The comparison result comprises comparison conditions of 4 index values in the parameter index values and corresponding early warning thresholds, so that whether the sliding risk exists in the slope sliding region of the rare earth ore can be analyzed by combining the 4 comparison conditions, and further stability grading early warning is carried out, and an early warning result is obtained.
The implementation principle of the embodiment of the invention is as follows:
acquiring monitoring point information of a slope sliding region of rare earth ore, arranging a point-line surface body three-dimensional monitoring and early warning system according to the monitoring point information, wherein the point-line surface body three-dimensional monitoring and early warning system comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter, monitoring and early warning the slope sliding region by using the point-line surface body three-dimensional monitoring and early warning system, calculating to obtain parameter index values of the slope sliding region, wherein the parameter index values comprise a resistivity change value, a wave ratio of transverse sound waves to longitudinal sound waves, a displacement change value and a water level change value, comparing the parameter index values with corresponding early warning thresholds respectively to obtain comparison results, and carrying out stability grading early warning on the slope sliding region of the rare earth ore according to the comparison results to obtain early warning results. The three-dimensional monitoring and early warning system for the point line and the surface of the rare earth mine realizes three-dimensional monitoring and early warning for the multiple indexes of the rare earth mine slope slip by comprehensively stabilizing and grading the slope slip area through the resistivity change value, the wave speed ratio of transverse sound wave to longitudinal sound wave, the displacement change value and the water level change value, and solves the problems of single index and large workload of the existing slope slip pre-judging when the indexes are single and multiple.
Based on the embodiment shown in fig. 1 above, in some preferred embodiments of the present invention, the procedure of comparison results in the above embodiments will be specifically described,
comparing the resistivity change value in the parameter index value with a resistivity early warning judging threshold value to obtain a first comparison result; when the first comparison result is DeltaR > K 1 When the first ratio is 1; when the first comparison result is that the resistivity change value is not larger than the resistivity early warning judging threshold value, obtaining a first ratio of 0;
comparing the wave speed ratio of the transverse sound wave and the longitudinal sound wave with a wave speed ratio early warning judgment threshold value to obtain a second comparison result; when the second comparison result is
When the second ratio is 1; when the second comparison result is that the wave speed ratio of the transverse sound wave to the longitudinal sound wave is not smaller than the wave speed ratio early warning judging threshold value, obtaining a second ratio of 0;
the displacement change value and the displacement early warning judgment thresholdComparing the values to obtain a third comparison result; when the third comparison result is DeltaS > K 3 When the third ratio is 1; when the displacement change value is not larger than the displacement early warning judging threshold value as the third comparison result, a third ratio is 0;
comparing the water level change value with a water level early warning discrimination threshold to obtain a fourth comparison result, wherein when the fourth comparison result is delta H & gtK 4 When the fourth ratio is 1; when the fourth comparison result is that the water level change value is not greater than the water level early warning judging threshold value, a fourth ratio value of 0 is obtained;
the specific case is shown in the following table 1,
table 1 comparison table of four parameter index values and early warning threshold
And obtaining a comparison result of four digits according to the first ratio, the second ratio, the third ratio and the fourth ratio.
In the embodiment of the invention, the comparison results of the four parameter index values and the early warning threshold value are subjected to binarization representation, so that the expression of the comparison results can be simplified, and the subsequent early warning processing according to the comparison results is facilitated.
Based on the above embodiments, in some preferred embodiments of the invention,
adding the first ratio, the second ratio, the third ratio and the fourth ratio in the comparison result to obtain an early warning value; the first ratio, the second ratio, the third ratio, and the fourth ratio may be 1 or 0, respectively;
matching the early warning value with a preset stability grading early warning table;
when the early warning value is 4, determining that the early warning level is the highest dangerous level, indicating that the slope is very likely to have a slip event, and immediately sending out red audible and visual alarm to inform all personnel to evacuate the dangerous zone immediately;
when the early warning value is 3 and the second ratio or the fourth ratio is 0, determining the early warning level as the highest dangerous level, wherein the water level change is possibly small, but the resistivity change value, the wave speed ratio and the displacement change value are all problematic, and the side slope is very likely to have a slip event; or the wave speed ratio is not problematic, but the resistivity change value, the water level change value and the displacement change value are all problematic, and the side slope is highly likely to have a slip event;
when the early warning value is 3 and the first ratio or the third ratio is 0, the early warning level is determined to be a medium dangerous level, which indicates that the change of the resistivity is possibly small, but the wave speed ratio, the water level change value and the displacement change value are all problematic, the inside of the slope is possibly deformed greatly, a protection measure is needed, a yellow warning can be sent out, and the relevant responsible person is reminded of making a supporting work; or, the displacement change may be small, but the resistivity change value, the wave speed ratio and the water level change value all have problems, and the inside of the slope may be greatly deformed;
when the early warning value is smaller than 3 and the third ratio is 1, the situation that the inside of the side slope is likely to deform greatly as long as the displacement change is large is indicated, and the early warning level is determined to be a medium dangerous level;
when the early warning value is smaller than 3 and the third ratio is 0, the slope is in a safe and stable state as long as displacement change is small, the early warning level is determined to be the lowest dangerous level, green light can be emitted, and the slope is reminded to be stable, and the dangerous level is the lowest;
the case for the early warning level is shown in table 2 below,
TABLE 2 Condition Meter for early warning level
Based on the above embodiments, in some preferred embodiments of the present invention, the method further comprises:
after the early warning result is obtained, validity analysis is carried out on the early warning result according to records of actual prediction conditions and actual disaster occurrence conditions to obtain effective early warning data and missing report error report data, the early warning threshold is adjusted and optimized according to the missing report error report data to obtain an early warning optimization threshold, and the early warning threshold is replaced by the early warning optimization threshold.
In the above embodiments, the rare earth slope slip disaster monitoring and early warning method is described in detail, and the slope slip disaster monitoring and early warning device to which the above method is applied is described by way of embodiments, as shown in fig. 2, the rare earth slope slip disaster monitoring and early warning device includes:
the dotted line-surface three-dimensional monitoring and early warning system 20 is arranged in a slope sliding area of the rare earth mine, and the dotted line-surface three-dimensional monitoring and early warning system 20 comprises a resistivity monitoring imaging subsystem 201, a ground sound monitoring subsystem 202, a displacement monitor 203 and a water level meter 204;
and the central processing unit 21 is connected with the dot-line surface three-dimensional monitoring and early warning system 20 and is used for realizing the monitoring and early warning method of the sliding disasters of the slopes.
The implementation principle of the embodiment of the invention is as follows:
the three-dimensional monitoring and early warning system 20 of the dotted line surface body is used for monitoring and calculating to obtain parameter index values of the slope sliding region, the parameter index values comprise a resistivity change value, a wave speed ratio of transverse sound waves to longitudinal sound waves, a displacement change value and a water level change value, the central processing unit 21 compares the parameter index values with corresponding early warning thresholds respectively to obtain comparison results, and the stability grading early warning is carried out on the slope sliding region of the rare earth mine according to the comparison results to obtain early warning results. The three-dimensional monitoring and early warning system for the point line and the surface of the rare earth mine realizes three-dimensional monitoring and early warning for the multiple indexes of the rare earth mine slope slip by comprehensively stabilizing and grading the slope slip area through the resistivity change value, the wave speed ratio of transverse sound wave to longitudinal sound wave, the displacement change value and the water level change value, and solves the problems of single index and large workload of the existing slope slip pre-judging when the indexes are single and multiple.
Based on the same technical scheme, the invention also discloses a computing device, which comprises one or more processors, one or more memories and one or more programs, wherein the one or more programs are stored in the one or more memories and are configured to be executed by the one or more processors, and the one or more programs comprise instructions for executing the slope slip disaster monitoring and early warning method.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof, but rather as providing for the use of additional embodiments and advantages of all such modifications, equivalents, improvements and similar to the present invention are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. The rare earth slope slip disaster monitoring and early warning method is characterized by comprising the following steps of:
acquiring monitoring point information of a slope slip region of the rare earth ore;
a point-line-surface-body three-dimensional monitoring and early warning system is arranged according to the monitoring point information, and comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter;
the three-dimensional monitoring and early warning system of the point line and the surface body is utilized to monitor and calculate and obtain parameter index values of the slope sliding region, wherein the parameter index values comprise resistivity change values, wave speed ratios of transverse sound waves and longitudinal sound waves, displacement change values and water level change values;
comparing the parameter index values with corresponding early warning thresholds respectively to obtain comparison results;
and carrying out stability grading early warning on the slope sliding region of the rare earth ore according to the comparison result to obtain an early warning result.
2. The method for monitoring and early warning a rare earth slope slip disaster according to claim 1, wherein the step of obtaining monitoring point information of a slope slip area of the rare earth mine comprises the steps of:
performing on-site investigation on the rare earth ore to obtain investigation information;
acquiring local hydrogeological environment information of the rare earth ore;
analyzing and obtaining a hidden danger area of potential slip of the side slope of the rare earth ore as a side slope slip area according to the investigation information and the local hydrogeological environment information;
and determining the positions and the number of the monitoring points in the slope sliding area according to a preset point-line-surface three-dimensional monitoring and early warning mechanism to obtain monitoring point information, wherein the monitoring points comprise the arrangement points of the electrodes of the resistivity measuring instrument, the arrangement points of the acoustic emission sensor and the acoustic receiving sensor, the arrangement points of the displacement monitor and the arrangement points of the water level meter.
3. The rare earth slope slip disaster monitoring and early warning method according to claim 2, wherein the three-dimensional monitoring and early warning system for laying out a dot line and a plane according to the monitoring point information comprises:
arranging an electrode, an acoustic emission sensor, an acoustic receiving sensor, a displacement monitor and a water level meter of the resistivity measuring instrument according to the monitoring point information;
connecting an electrode of the resistivity measuring instrument with the resistivity measuring instrument through a cable to obtain a resistivity monitoring imaging subsystem;
connecting the acoustic emission sensor and the acoustic receiving sensor with an acoustic signal processor to obtain a ground sound monitoring subsystem;
and obtaining a three-dimensional monitoring and early warning system of the point-line and surface body according to the resistivity monitoring and imaging subsystem, the ground sound monitoring subsystem, the displacement monitor and the water level meter.
4. The method for monitoring and early warning a sliding disaster of a rare earth slope according to claim 1, wherein the monitoring and early warning system for three-dimensional monitoring and early warning of a dotted line and a plane is used for monitoring and calculating a parameter index value of the sliding area of the slope, and the method comprises the following steps:
acquiring the resistivity parameter of the slope sliding region according to a preset monitoring period by using the resistivity monitoring imaging subsystem, and calculating to obtain a resistivity change value according to the resistivity parameter;
transmitting and receiving propagation parameters of transverse sound waves and longitudinal sound waves according to a preset monitoring period by using the ground sound monitoring subsystem, and calculating according to the propagation parameters to obtain the wave velocity ratio of the transverse sound waves and the longitudinal sound waves in the slope sliding region;
monitoring displacement coordinate values according to a preset monitoring period by using the displacement monitor, and calculating displacement change values of the slope sliding region according to the displacement change values;
monitoring a water level value according to a preset monitoring period by using the water level meter, and calculating to obtain a water level change value of the slope sliding region according to the water level value;
and combining the resistivity change value, the wave speed ratio of the transverse sound wave to the longitudinal sound wave, the displacement change value and the water level change value into a plurality of columns to obtain the parameter index value of the slope sliding region.
5. The method for monitoring and early warning a rare earth slope slip disaster according to claim 4, wherein comparing the parameter index values with corresponding early warning thresholds respectively to obtain comparison results comprises:
acquiring a preset early warning threshold, wherein the early warning threshold comprises a resistivity early warning judging threshold, a wave speed ratio early warning judging threshold, a displacement early warning judging threshold and a water level early warning judging threshold;
comparing the resistivity change value in the parameter index value with the resistivity early warning judging threshold value to obtain a first comparison result;
comparing the wave speed ratio of the transverse sound wave to the longitudinal sound wave with the wave speed ratio early warning judgment threshold value to obtain a second comparison result;
comparing the displacement variation value with the displacement early warning discrimination threshold value to obtain a third comparison result;
comparing the water level change value with the water level early warning judging threshold value to obtain a fourth comparison result;
and obtaining a comparison result according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result.
6. The method for monitoring and early warning a sliding disaster on a rare earth slope according to claim 5, wherein obtaining a comparison result according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result comprises:
when the first comparison result is that the resistivity change value is larger than the resistivity early warning judging threshold value, a first ratio is 1;
when the first comparison result is that the resistivity change value is not larger than the resistivity early warning judging threshold value, a first ratio is 0;
when the second comparison result is that the wave speed ratio of the transverse sound wave to the longitudinal sound wave is smaller than the wave speed ratio early warning judging threshold value, obtaining a second ratio to be 1;
when the second comparison result is that the wave speed ratio of the transverse sound wave to the longitudinal sound wave is not smaller than the wave speed ratio early warning judging threshold value, obtaining a second ratio of 0;
when the third comparison result is that the displacement change value is larger than the displacement early warning judging threshold value, a third ratio is 1;
when the third comparison result is that the displacement change value is not larger than the displacement early warning judging threshold value, a third ratio is 0;
when the fourth comparison result is that the water level change value is larger than the water level early warning judging threshold value, a fourth ratio is 1;
when the fourth comparison result is that the water level change value is not greater than the water level early warning judging threshold value, a fourth ratio value of 0 is obtained;
and obtaining a comparison result according to the first ratio, the second ratio, the third ratio and the fourth ratio.
7. The method for monitoring and pre-warning the rare earth slope slip disaster according to claim 6, wherein the step of pre-warning the stability of the slope slip area of the rare earth mine according to the comparison result to obtain the pre-warning result comprises the following steps:
adding the first ratio, the second ratio, the third ratio and the fourth ratio in the comparison result to obtain an early warning value;
and matching the early warning value with a preset stability grading early warning table, and determining an early warning grade to obtain an early warning result.
8. The method for monitoring and pre-warning the sliding disaster of the rare earth slope according to claim 7, wherein the step of matching the pre-warning value with a preset stability grading pre-warning table to determine the pre-warning grade and obtain the pre-warning result comprises the following steps:
matching the early warning value with a preset stability grading early warning table;
when the early warning value is 4, determining that the early warning level is the highest dangerous level;
when the early warning value is 3 and the second ratio or the fourth ratio is 0, determining that the early warning level is the highest dangerous level;
when the early warning value is 3 and the first ratio or the third ratio is 0, determining that the early warning level is a medium danger level;
when the early warning value is smaller than 3 and the third ratio is 1, determining that the early warning level is a medium danger level;
when the early warning value is smaller than 3 and the third ratio is 0, determining that the early warning level is the lowest dangerous level;
and obtaining an early warning result according to the early warning grade.
9. The rare earth slope slip hazard monitoring and warning method according to any one of claims 1 to 8, characterized in that the method further comprises:
carrying out validity analysis on the early warning result to obtain valid early warning data and missing report false alarm data;
adjusting and optimizing the early warning threshold according to the missing report false report data to obtain an early warning optimization threshold;
and replacing the early warning threshold value with the early warning optimization threshold value.
10. The utility model provides a tombarthite side slope calamity monitoring and early warning device which characterized in that includes:
the system comprises a point-line surface three-dimensional monitoring and early warning system arranged in a slope sliding area of rare earth ore, wherein the point-line surface three-dimensional monitoring and early warning system comprises a resistivity monitoring imaging subsystem, a ground sound monitoring subsystem, a displacement monitor and a water level meter;
and the central processing unit is connected with the dot-line-surface-body three-dimensional monitoring and early warning system and is used for realizing the rare earth slope slip disaster monitoring and early warning method in the claims 1-9.
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