CN108922123A - Mine slope slip stability monitoring and early warning method - Google Patents
Mine slope slip stability monitoring and early warning method Download PDFInfo
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Abstract
the invention discloses a mine side slope slip stability monitoring and early warning method which comprises the steps of selecting a side slope deformation monitoring section, arranging a vertical measuring line at the position of the monitoring section corresponding to a side slope platform, installing an inclinometer on the vertical measuring line, carrying out scientific analysis according to measured data, respectively adopting different slip stability analysis methods and standards for an initial blasting stage and a later stable development stage of side slope mining, coupling the slip of a mine side slope with blasting response, and enabling the increase rate of blasting displacement to be epsilon with the blasting responseiand rate of change of slip development is ηiAnd determining a displacement threshold value for the parameters and judging the stability state of the mine slope, so as to realize evaluation and early warning on the slope stability. According to the method, the mine side slope slippage can be more accurately and intuitively represented by monitoring the mine side slope slippage in real time and acquiring data and analyzing the data by adopting the Newton interpolation, fitting and other processing processes, the side slope slippage can be early warned in time according to the real-time data analysis, and an effective scientific basis is provided for monitoring the side slope slippage stability.
Description
Technical field
The invention belongs to geotechnical engineering field more particularly to the deformation monitorings of mine open slope, and in particular to Yi Zhongkuang
Mountain Slope Sliding STABILITY MONITORING method for early warning.
Background technique
China mine landslide disaster threatens seriously, and landslide of high slope accident in mine is sent out in all kinds of accidents in China mine at present
The raw accident that frequency is higher, death toll is more.China western part is that mineral resources are mainly distributed ground, while west area is also to collapse
It collapses, come down, the multiple area of Geological Hazards of debris, at least causing hundred million yuan of 15-30 losses, serious landslide geology calamity every year on average
Evil causes extreme loss to the lives and properties of local resident, how to formulate the maximum conditions of Slope with multi-step local buckling to Multi-edge
Prediction and warning work in slope is of great significance.
Currently used mine slope displacement detecting instrument is mainly displacement meter and inclinometer, although the former can be directly easy
The shift value for reading out side slope surface, but there is certain limitation due to that cannot reflect side slope internal displacement.The latter is on side
More common in the displacement detecting of slope, this method passes through the surveyed inclination angle theta of inclinometeriWith amount segment length LiCalculate the horizontal position of side slope
It moves, horizontal displacement total amountThe calculation method is regarded side slope survey line as broken line and is calculated, in inclinometer
Position is broken line break, but practical side slope survey line displacement curve should be smoothed curve, often amplifies to drop by error
Low monitoring data reliability；Meanwhile this method can only find out the displacement of certain point on survey line by way of linearly seeking difference, have
Certain limitation.
It is more for the determination method of slope displacement secure threshold at present, it is mainly the following：Analytic method, numerical analysis
The methods of method, Engineering Geological Analogy Method, model test.Analytic method, which is passed through, carries out slope deforming calculating frequently with complex function, due to
The features such as lithology, construction, the environment of side slope are different, it is difficult to accurate description, therefore usually it is unable to satisfy calculating accuracy；Numerical value point
Analysis method includes FInite Element, boundary element method etc., the method overcome the deficiency of analytic method, but it is often difficult for Discontinuous transmission
To solve；Engineering Geological Analogy Method and model testing method overcome the difficulty on calculating, but still deposit with side slope actual conditions
In different, to the determination of sliding threshold value, there are still unstable factors.
Therefore, it in order to overcome deficiency and limitation existing for above-mentioned existing monitoring method, slides and develops for mine slope
Rule and developing stage, it would be highly desirable to propose a kind of displacement calculation based on mine slope slip mechanism and a kind of based on side slope
The threshold value of warning method of determination that itself sliding development is coupled with concussion of blasting carries out the monitoring and early warning of mine slope.
Summary of the invention
Technical problem to be solved by the present invention lies in for the monitoring of existing mine slope and warning data processing method
Deficiency proposes a kind of mine slope sliding stability monitoring and pre-alarming method, to overcome the calculating error of traditional slope displacement amount, really
The fixed safety analysis being more consistent with side slope self property and alarm mode are led in mine slope safety evaluation and monitoring and warning
Domain has important application value.
The present invention, which is that the following technical solution is employed, to be realized：A kind of mine slope sliding stability monitoring and pre-alarming method,
Include the following steps：
Step A, select the section perpendicular to Slope Sliding direction for monitoring section, on each monitoring section, on each side
At least one vertical survey line is arranged in platform corresponding position in slope；
Step B, multiple inclinometers are installed at interval on the corresponding vertical survey line of each monitoring section respectively, and record deviational survey
The data k that instrument initial time measures(0, j)With inclinometer mounting height h, wherein k(0, j)Indicate j-th of inclinometer inspection of initial time
The slope value of the current mounting position of survey；
Step C, the data k measured according to inclinometer initial time(0, j)With inclinometer mounting height h, obtain each vertical
The tracing pattern of survey line initial time：
By inclinometer measures on the same vertical survey line of initial time slope value and mounting height data by Matlab into
Row interpolation operation, and the displacement curve D (0, h) of corresponding vertical survey line is fitted, to indicate the song of the initial time of vertical survey line
Line morphology；
Step D, Slope Sliding stability analysis and secure threshold early warning：
(D1) for initial stage mining phase：Due to initial stage of production, explosion is more frequent, and Slope Sliding is influenced by explosion
Than more serious, under the concrete analysis process in the stage enters：
(D11) the data k measured according to moment inclinometer each before and after explosion(i, j)And inclinometer mounting height h, k(i, j)
The slope value for indicating the current mounting position of i-th of moment, j-th of inclinometer detection obtains vertical survey using the method for step C
The displacement curve D (i, h) at line each moment before and after explosion；
(D12) according to i-1 moment shift value D (i-1, h) before moment i slope displacement curve D (i, h) after explosion and explosion it
Difference, which is determined, is displaced growth curve Δ D (i, h) after certain separate explosion, i.e. slip value；
(D13) secure threshold is set according to the coupling of the Slope Sliding value Δ D (i, h) of acquisition and separate explosion vibration,
When the explosion displacement growth rate on certain separate explosion back slope is more than that the secure threshold just makes secure alarm；
(D2) for later period side slope self-growth state phase：The stable development stage in side slope later period mainly by side slope from
The influence of the natural causes such as weight, wind, rainwater is a slow process, which passes through displacement long-run development change rate ηiInto
Row determination of stability and early warning：
Using means same as step D11 and step D12, the Slope Sliding value Δ D (i, h) and i-1 at the i-th moment are obtained
The Slope Sliding value Δ D (i-1, h) at moment, then：
Wherein, H by the vertical survey line of survey depth, as displacement long-run development change rate ηiWhen value is positive value, show this
Locate Slope Sliding and is in acceleration deformation stage；Stablize deformation stage conversely, being then in.
Further, in the step A, one monitoring section of place setting of obvious tomography or sliding occurs in side slope, and
According to the mine slope gradient and degree of crushing in other positions with remaining monitoring section of 30m-60m arranged for interval, with preferably
Reaction mine slope slides development at any time or as caused by explosion, is the representative position that side slope slides, is easy to
Timely monitoring is made to worst position.
Further, in the step dress B, the inclinometer is arranged vertically along the vertical survey line, vertical what is selected
It drills at survey line and is put into sleeve conduit, inclinometer is put into along sleeve conduit vertically, 3-5 survey is installed on every vertical survey line
Oblique instrument.
Further, in the step C, obtaining the initial configuration of vertical survey line, detailed process is as follows：
(C1) according to embedded instrument when, the read data k of inclinometer initial time(0, j)With inclinometer height h, import
Go out the slope curve D ' of vertical survey line in Matlab by Newton interpolation calculationh(0, h), by n times interpolation polynomial to be asked
D’h(0, h) is changed to the form with inheritedness, then utilizes interpolation condition (data that the depth and inclinometer of each point measure)
Determine D 'hThe undetermined coefficient of (0, h), and then its slope curve is found out, it is sharp on the basis of original calculating by Newton interpolation
It is further calculated with the data calculated before, improves analytical calculation efficiency；
(C2) the slope curve D ' based on acquisitionh(0, h), by integral command obtain vertical survey line displacement curve D (0,
h)；Same mode can be used in the form of survey line vertical for other moment, for example the displacement curve of i moment vertical survey line indicates
For D (i, h), herein for be for a vertical survey line, the vertical survey line of other positions is same method, passes through plot
(h, D) orders the coordinate that the Drawing of Curve of vertical survey line is come out to and be can be read any point, which is vertical survey line
Actual displacement coordinate；
Further, in the step D13, the determination method of secure threshold is：
(D131) energy caused by the explosive equivalent conversion explosion according to used in explosion, and by influence coefficient T h into
Row amendment, the influence coefficient that every separate explosion side slope slides are：Th=f (Si, Ei), wherein SiIt is i moment blow-up point away from current
The distance of vertical survey line measuring point；EiFor the energy that i moment explosion has, explosion is displaced growth rate ∈i=Δ D (i, h)/Th；
(D132) preceding n-1 monitoring is displaced growth rate (∈1, ∈2, ∈3... ∈n-1) be used as totally, and it is total to set this
Body obedience is just distributed very much, i.e. ∈i~N (μ, σ2), then first n-1 times growth rate average value mu and variances sigma can be obtained2；
(D133) ∈ i is standardized conversion and obtains statistic F, t distributed area is called according to freedom degree, confidence coefficient
Table judges that side slope is in stable state if it is the t test value under α that statistic F, which is less than confidence coefficient,；It is set if statistic F is greater than
Believe that coefficient is the t test value under α, then judges the exception of Slope Sliding amount caused by thus separate explosion, detailed examination need to be carried out.
Compared with prior art, the advantages and positive effects of the present invention are：
The deformation mechanism of method combination inclinometer sleeve of the present invention carries out Newton to inclinometer institute's measured data and inserts
The analyses such as value, numerical integration, Function Fitting processing obtains slope function by the way that intermittent slope value is carried out interpolation, then will insert
The slope function that value obtains integrates to obtain displacement function, realizes more accurate monitoring, and meets Slope Sliding form, can be by position
The accurate coordinates that function is fitted processing each point to survey line are moved, energy sound response goes out the deformation curve of inclinometer sleeve
And deformation values are calculated, obtain can be used for monitoring in real time mine slope sliding mode and determine the evaluation parameter of secure threshold；
In addition, different sliding stabilities is respectively adopted in side slope initial stage of production blasting stage and stable development stage in later period
The sliding of mine slope is coupled with explosion response, is displaced growth rate ∈ with explosion by analysis method and standardi, sliding hair
Exhibition change rate is ηiDisplacement threshold value is determined for parameter and judges Mine Slope Stability state, is side slope to make early warning in time
Sliding stability monitoring provides effective scientific basis, practical value with higher.
Detailed description of the invention
Fig. 1 is the flow diagram of mine slope of embodiment of the present invention sliding stability monitoring and pre-alarming method；
Fig. 2 is the monitoring section of mine slope and the position view of survey line described in the embodiment of the present invention；
Fig. 3 is vertical arrangement of measuring-line schematic top plan view described in the embodiment of the present invention.
Specific embodiment
In order to which the above objects, features and advantages of the present invention is more clearly understood, with reference to the accompanying drawing and implement
The present invention will be further described for example.It should be noted that in the absence of conflict, in embodiments herein and embodiment
Feature can be combined with each other.
It should be noted that according to the present invention focus on to mine slope sliding stability monitoring and pre-alarming method
It improves, to monitoring device therein, in the case where meeting equipment operational reliability, those skilled in the art should know that it is specific
Installation method and application method, for example, for the monitoring analysis and early warning of realizing side slope, some necessary monitoring and warning system modules
It needs to install and design, such as：The monitoring and warning system may include power supply unit, acquisition unit, alarm unit, control unit
Deng, power supply unit can be used solar panel, battery etc. and be powered for each unit, the acquisition unit include it is some must
The cable run wanted is laid, automatic collection case and data processor, described control unit include wireless transport module, GPS receiver
Machine processor and PC machine etc. are converged after acquiring the data of the monitoring devices such as data inclinometer by several branch line cables by total cable
Always, it is transmitted to automatic collection case, then data are acquired by PC machine and are carried out by GPRS transmission to network by wireless transport module
Analysis is realized real-time monitoring and early warning, is only limited the specific setting position of mine slope sliding monitoring device in the application
Other brief descriptions fixed, do in the application to it, those skilled in the art are easy to know according to the relevant technologies.
Embodiment, a kind of mine slope sliding stability monitoring and pre-alarming method, as shown in Figure 1, including the following steps：
Step S1, select the section perpendicular to Slope Sliding direction for monitoring section, on each monitoring section, on each side
At least one vertical survey line, prison is arranged in the corresponding position of slope platform (on side slope surface along longitudinal direction, there is the platform of one fixed width)
The schematic diagram for surveying section 1 and vertical 2 position of survey line is as shown in Figure 2；
Step S2, multiple inclinometers are installed at interval on the corresponding vertical survey line of each monitoring section respectively, and record survey
The data k that oblique instrument initial time measures(0, j)With inclinometer mounting height h, wherein k(0, j)Indicate j-th of inclinometer of initial time
The slope value of the current mounting position of detection；
Step S3, the data k measured according to inclinometer initial time(0, j)With inclinometer mounting height h, obtain each vertical
The tracing pattern of survey line initial time：
By inclinometer measures on the same vertical survey line of initial time slope value and mounting height data by Matlab into
Row interpolation operation, and the displacement curve D (0, h) of corresponding vertical survey line is fitted, to indicate the song of the initial time of vertical survey line
Line morphology；Due to when making sleeve conduit down, it may occur that inclination or buckling phenomenon, so the initial configuration of vertical survey line
It is not completely vertical, so the data by inclinometer show the original state of vertical survey line, passes through judgement point
Analyse the variation of later period vertical survey line tracing pattern, so that it may know the displacement that each point generates in corresponding timing node,
And then safety is provided for Slope Sliding stability analysis and defines foundation；
Step S4, Slope Sliding stability analysis and secure threshold early warning：
(S41) for initial stage mining phase：Due to initial stage of production, explosion is more frequent, shadow of the Slope Sliding by explosion
It rings than more serious, the concrete analysis process of the process is as follows：
(S411) the data k measured according to moment inclinometer each before and after explosion(i, j)And inclinometer mounting height h, k(i, j)
The slope value for indicating the current mounting position of i-th of moment, j-th of inclinometer detection obtains vertical survey using the method for step C
The displacement curve D (i, h) at line each moment before and after explosion；
(S412) according to i-1 moment shift value D (i-1, h) before moment i slope displacement curve D (i, h) after explosion and explosion
Difference determine and be displaced growth curve Δ D (i, h) after certain separate explosion, i.e. slip value；
(S413) safety is set according to the energy coupling of the Slope Sliding value Δ D (i, h) of acquisition and separate explosion vibration
Threshold value, when certain separate explosion back slope slip value is more than that the secure threshold just makes secure alarm；
(S42) for later period side slope self-growth state phase：The stable development stage in side slope later period mainly by side slope from
The influence of the natural causes such as weight, weathering, rainwater is a slow process；By being displaced long-run development change rate ηiIt carries out steady
Qualitative judgement and early warning：
Using means same as step S411 and step S422, obtain the i-th moment Slope Sliding value Δ D (i, h) and
The Slope Sliding value Δ D (i-1, h) at i-1 moment, then：
Wherein, H by the vertical survey line of survey depth, as displacement long-run development change rate ηiWhen value is positive value, show this
Locate Slope Sliding and is in acceleration deformation stage；Stablize deformation stage conversely, being then in.
For in step S413, in mine slope stage initial stage of production, the mode that secure threshold determines is as follows：
(1) energy caused by the explosive equivalent conversion explosion according to used in explosion, and carried out by influencing coefficient T h
Amendment, the influence coefficient that every separate explosion side slope slides are：Th=f (Si, Ei), wherein SiIt hangs down for i moment blow-up point away from current
The distance of straight survey line measuring point；EiFor the energy that i moment explosion has, explosion is displaced growth rate ∈i=Δ D (i, h)/Th；
(2) preceding n-1 monitoring is displaced growth rate (∈1, ∈2, ∈3... ∈n-1) be used as totally, and set the totality
Obedience is just distributed very much, i.e. ∈i~N (μ, σ2), then first n-1 times growth rate average value mu and variances sigma can be obtained2；
(3) by ∈iIt is standardized conversion and obtains statistic F, t distributed area table is called according to freedom degree, confidence coefficient,
If it is the t test value under α that statistic F, which is less than confidence coefficient, judge that side slope is in stable state；If statistic F is greater than confidence
Coefficient is the t test value under α, then judges the exception of Slope Sliding amount caused by thus separate explosion, need to carry out detailed examination.
It is described in detail by taking certain open mine side slope as an example below, as shown in figure 3, the geology feelings of the open mine side slope
Condition investigation is detailed, has the invention application conditions, specifically：
The first step：The arrangement of slope monitoring section, vertical survey line：
Section of the monitoring section perpendicular to Slope Sliding direction, the monitoring section at side slope section setting one, the monitoring are disconnected
Poor slope geological condition, side slope type and more complicated, the possible representative Slope Sliding destruction of generation of stress is arranged in face
Key position, can be by direct visual perception, remaining monitoring section takes 30m-60m according to the mine slope gradient, degree of crushing etc.
Arranged for interval.And on each monitoring section, each plain stage of slope (1768 platforms, 1780 platforms, 1792 platforms, 1816 platforms
With 1826 platforms etc.) at least one vertical survey line (the vertical survey line of 1-A -1-E5 item is provided on such as 1768 platforms) should be equipped with.
The arrangement of the position selection and survey line of above-mentioned monitoring section, can preferably react mine slope at any time or by quick-fried
Development is slid caused by broken, is the representative position that side slope slides, is easy to make timely prison to worst position
It surveys.
Second step：The installation and arrangement of monitoring device：
Monitoring device includes inclinometer, and inclinometer should be arranged vertically along the vertical survey line, high according to locating plain stage of slope
3-5 inclinometer should be equipped with by spending in every survey line, drilled at selected survey line and be put into sleeve, inclinometer is put along sleeve vertically
Under, vertical interval is 4m between inclinometer, and top side inclinometer is away from plain stage of slope surface 3.2m.
Third step：Displacement curve D (i, h) is calculated according to measured value；
Under blast action and long-run development effect, slope stability situation will change mine slope with the sliding of side slope
And generate variation.It is periodically detected according to detection duration, blast action side slope, records inclinometer institute in each detection phase
Measured data k(i, j)And survey line slope function D ' is calculated by Newton interpolating functionh(i, h).
For initial 0 moment, inclinometer measures on same vertical survey line slope value and mounting height data are passed through
Matlab carries out interpolation arithmetic, and fits the displacement curve D (0, h) of corresponding vertical survey line, to indicate the initial of vertical survey line
The tracing pattern at moment, for other moment in monitoring process, in the same way, and then according to the tracing pattern of survey line
Its specific sliding situation of change is learnt in variation.For example the displacement curve of i moment vertical survey line is expressed as D (i, h), herein for
Be for a vertical survey line, the vertical survey line of other positions is same method, by plot (h, D) order will vertically survey
The Drawing of Curve of line comes out and can be read the coordinate of any point, which is the actual displacement coordinate of vertical survey line, tiltedly
The read data k of instrument initial time(0, j)With inclinometer height h, import vertical out by Newton interpolation calculation in Matlab
Slope curve D ' the h (0, h) of survey line, by n times interpolation polynomial D ' to be askedh(0, h) is changed to the form with inheritedness, then
D ' is determined using interpolation condition (data that the depth and inclinometer of each point measure)hThe undetermined coefficient of (0, h), and then find out it
Slope curve, by Newton interpolation, the data calculated before on the basis of original calculating are further calculated, are mentioned
High analyte computational efficiency.
Inclinometer records the data of certain a period of time in table 1, it should be noted that letter i indicates institute in the present embodiment
The data moment taken, which group data distinguished, mine slope initial stage of production when choosing data, after being every separate explosion
Latest data is once analyzed；Later period stability of slope developing stage not explosion, about 1 week update a data.
The monitoring data of 3C survey line in 1 Fig. 3 of table
1 data of table are inputted in Newton interpolation procedure and calculate survey line slope function D 'h(i, h), table 2 are each group monitoring
Data interpolating function.
Interpolating function of the table 2 for each group monitoring data in table 1
2 slope function of table progress numerical integration is calculated into Function of side-slope lateral displacement D (i, h).
Table 3 is each group monitoring data displacement function.
4th step：According to displacement curve, side slope total displacement amount Δ D (i, h) in i-th of period is determined.
(1) mining phase initial for side slope：The method according to third step calculates each point coordinate of its cofunction,
And the shift value size changed the time, Δ D (i, h)=D (i+1, h)-D (i, h), root are calculated by the difference of coordinate points respective function value
The influence coefficient T h of every separate explosion side slope sliding is determined apart from side slope position according to energy caused by explosion and blow-up point；
Th=f (Si, Ei)
Wherein：Si--- i moment distance of the blow-up point away from the measuring point
Ei--- the energy that i moment explosion has
Thereby determine that explosion is displaced growth rate ∈i, ∈i=Δ D (i, h)/Th, for example, 6 times before monitoring point are monitored quick-fried
Broken displacement growth rate (∈1, ∈2……∈6) it is used as a totality, it is assumed that totality obedience is just distributed very much, i.e. ∈i~N (μ, σ2),
∈7The totality for being 1 as sample size.
It is calculated from the formula (∈1, ∈2……∈6) sample average μ and variances sigma2。
By ∈7It brings following formula into and obtains statistic
T distribution table is looked into, the t test value under confidence coefficient is 0.05 when obtaining freedom degree n=6 is 1.94318, η <
1.94318 judging ∈7Normally, show that side slope is in stable state at this stage.
(2) for the stable development stage in Highwall mining later period, the monitoring of long-term slope slip value is developed by Slope Sliding
Change in long term rate η i is judged that value is：
When the Slip change rate value is to illustrate that side slope sliding velocity within the period slowly increases at this on the occasion of 0.0001638
Long, slope sliding is still in developing stage.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (5)
1. a kind of mine slope sliding stability monitoring and pre-alarming method, which is characterized in that include the following steps：
Step A, select the section perpendicular to Slope Sliding direction for monitoring section, it is flat in each side slope on each monitoring section
At least one vertical survey line is arranged in the corresponding position of platform；
Step B, multiple inclinometers are installed at interval on the corresponding vertical survey line of each monitoring section respectively, and at the beginning of recording inclinometer
The data k that moment beginning measures(0, j)With inclinometer mounting height h, wherein k(0, j)Indicate j-th of inclinometer detection of initial time
The slope value of current mounting position；
Step C, the data k measured according to inclinometer initial time(0, j)With inclinometer mounting height h, each vertical survey line is obtained
The tracing pattern of initial time：
Inclinometer measures on the same vertical survey line of initial time slope value and mounting height data are carried out by Matlab slotting
It is worth operation, and fits the displacement curve D (0, h) of corresponding vertical survey line, indicates the curved shape of the initial time of vertical survey line
State；Step D, Slope Sliding stability analysis and secure threshold early warning：
(D1) due to initial stage of production, explosion is more frequent, and Slope Sliding is influenced to exploit initial stage than more serious by explosion
Phase analysis process is as follows：
(D11) the data k measured according to moment inclinometer each before and after explosion(i, j)And inclinometer mounting height h, k(i, j)Indicate the
The slope value of the current mounting position of j-th of inclinometer of i moment detection obtains vertical survey line quick-fried using the method for step C
The displacement curve D (i, h) at broken front and back each moment；
(D12) difference according to i-1 moment shift value D (i-1, h) before moment i slope displacement curve D (i, h) after explosion and explosion is true
It is displaced growth curve Δ D (i, h) after being scheduled on certain separate explosion, i.e. slip value；
(D13) secure threshold is set according to the coupling of the Slope Sliding value Δ D (i, h) of acquisition and separate explosion vibration, when certain
The explosion displacement growth rate of side slope is more than that the secure threshold just makes secure alarm after separate explosion；
(D2) for later period side slope self-growth state phase, by being displaced long-run development change rate ηiCarry out determination of stability with
Early warning：
Using means same as step D11 and step D12, Slope Sliding value Δ D (i, h) and the i-1 moment at the i-th moment are obtained
Slope Sliding value Δ D (i-1, h), then：
Wherein, H by the vertical survey line of survey depth, as displacement long-run development change rate ηiWhen value is positive value, show side slope at this
Sliding is in acceleration deformation stage；Stablize deformation stage conversely, being then in.
2. mine slope sliding stability monitoring and pre-alarming method according to claim 1, it is characterised in that：The step A
In, one monitoring section of place setting of obvious tomography or sliding occurs in side slope, and according to the mine slope gradient and degree of crushing
In other positions with remaining monitoring section of 30m-60m arranged for interval.
3. mine slope sliding stability monitoring and pre-alarming method according to claim 1, it is characterised in that：The step dress
In B, the inclinometer is arranged vertically along the vertical survey line, and 3-5 inclinometer is installed on every vertical survey line.
4. mine slope sliding stability monitoring and pre-alarming method according to claim 1, it is characterised in that：The step C
In, obtaining the initial configuration of vertical survey line, detailed process is as follows：
(C1) according to embedded instrument when, the read data k of inclinometer initial time(0, j)With inclinometer height h, Matlab is imported
In go out the slope curve D ' of vertical survey line by Newton interpolation calculationh(0, h)；
(C2) the slope curve D ' based on acquisitionh(0, h) obtains the displacement curve D (0, h) of vertical survey line by integral command.
5. mine slope sliding stability monitoring and pre-alarming method according to claim 1, it is characterised in that：The step
In D13, the determination method of secure threshold is：
(D131) energy caused by the explosive equivalent conversion explosion according to used in explosion, and repaired by influencing coefficient T h
Just, the influence coefficient of every separate explosion side slope sliding is：Th=f (Si, Ei), wherein SiIt is i moment blow-up point away from current vertical
The distance of survey line measuring point；EiFor the energy that i moment explosion has, explosion is displaced growth rate ∈i=Δ D (i, h)/Th；
(D132) preceding n-1 monitoring is displaced growth rate (∈1, ∈2, ∈3... ... ∈n-1) be used as totally, and set totality obedience
It is just distributed very much, i.e. ∈i~N (μ, σ2), then first n-1 times growth rate average value mu and variances sigma can be obtained2；
(D133) by ∈iIt is standardized conversion and obtains statistic F, t distributed area table is called according to freedom degree, confidence coefficient, if
It is the t test value under α that statistic F, which is less than confidence coefficient, then judges that side slope is in stable state；If statistic F is greater than confidence system
Number is the t test value under α, then judges the exception of Slope Sliding amount caused by thus separate explosion.
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