CN110488352A - A kind of determination method of the microseism parameter threshold for rock burst grade early warning - Google Patents
A kind of determination method of the microseism parameter threshold for rock burst grade early warning Download PDFInfo
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- CN110488352A CN110488352A CN201910768462.0A CN201910768462A CN110488352A CN 110488352 A CN110488352 A CN 110488352A CN 201910768462 A CN201910768462 A CN 201910768462A CN 110488352 A CN110488352 A CN 110488352A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/30—Analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/34—Displaying seismic recordings or visualisation of seismic data or attributes
Abstract
The present invention relates to a kind of determination methods of microseism parameter threshold for rock burst grade early warning.This is used for the determination method packaging step of the microseism parameter threshold of rock burst grade early warning: a) carrying out standardization with extreme difference transformation respectively to the microseism parameter of multiple rock burst cases of same rock burst grade；B) clustering is carried out to the transformed microseism parameter of standardization with extreme difference, respectively to remove the rock burst case of the transformed microseism parameter discrete of standardization with extreme difference；C) average value of the microseism parameter before the standardization with extreme difference transformation of remaining rock burst case is calculated, the average value is as microseism parameter threshold corresponding with rock burst grade.So, after carrying out standardization with extreme difference transformation to microseism parameter, clustering is carried out again, to which the rock burst case of microseism parameter discrete be rejected, the validity for having ensured rock burst case, the larger microseism parameter threshold for causing rock burst early warning of microseism parameter quantities otherness for solving rock burst case in same rock burst grade are difficult to the technical problem accurately determined.
Description
Technical field
The present invention relates to rock burst early warning technology fields, more particularly to a kind of microseism parameter threshold for rock burst grade early warning
The determination method of value.
Background technique
When deep hard rock excavates, in the construction process or then in a period of time, rock burst dynamic disaster phenomenon may occur,
Seriously endanger construction safety and delay construction speed.Rock burst grade is the index for describing rock burst intensity and destroying scale.It presses
Extent of the destruction and harmfulness caused by rock burst, rock burst grade can be divided into slight, medium, strong and extremely strong level Four from low to high.For
Specific aim prevention and control rockburst risk, it is necessary to early warning be carried out to rock burst grade in the construction process.On Microseismic Monitoring Technique can be real
When obtain the information such as microseismic event occurs in Stress relief overall process after rock excavation time, position and energy release, recognized
To be current to carry out one of rock-burst monitoring and the most effective means of early warning.
But how accurately to determine that the threshold value of the microseism parameter of different rock burst grades is based on micro seismic monitoring information to rock burst
The technological difficulties of grade progress early warning.Currently, the microseism parameter threshold of rock burst grade comes true mainly by analysis of cases combination experience
It is fixed, it is difficult to guarantee the accuracy of threshold value of warning, to influence the accuracy of rock burst grade early warning.
Summary of the invention
Based on this, it is necessary to for being determined by the way of the analysis of cases combination experience in the prior art, it is difficult to guarantee
The accuracy of microseism parameter threshold provides a kind of drawbacks described above that improves thus the problem of influencing rock burst grade early warning accuracy
The determination method of microseism parameter threshold for rock burst grade early warning.
A kind of determination method of the microseism parameter threshold for rock burst grade early warning, which is characterized in that comprising steps of
A) standardization with extreme difference transformation is carried out respectively to the microseism parameter of multiple rock burst cases of same rock burst grade；
B) clustering is carried out to the transformed microseism parameter of standardization with extreme difference, it is transformed micro- to remove standardization with extreme difference
Shake the rock burst case of parameter discrete；
C) average value of the microseism parameter before the standardization with extreme difference transformation of remaining rock burst case is calculated, the average value is made
For microseism parameter threshold corresponding with the rock burst grade.
The determination method of the above-mentioned microseism parameter threshold for the early warning of rock burst grade, by very poor just to the progress of microseism parameter
After ruleization transformation, then carry out clustering, so that the rock burst case of microseism parameter discrete be rejected, filtered out microseism parameter compared with
For concentration, representative rock burst case, the validity of rock burst case in microseism parameter threshold acquisition process has been ensured, solved
The microseism parameter quantities otherness larger microseism parameter threshold for causing rock burst grade early warning in the rock burst case of same rock burst grade
Value is difficult to the technical problem accurately determined.
In one embodiment, the microseism parameter of each rock burst case includes accumulation microseismic event number, accumulation microseism release
At least one of can and accumulate microseism apparent volume.
In one embodiment, rock burst grade is divided into slight, medium, strong and extremely strong.
In one embodiment, the determination method of the microseism parameter threshold of the rock burst grade early warning further comprises the steps of:
Step a) to step b) is repeated, to obtain the corresponding microseism parameter threshold of four rock burst grades respectively.
In one embodiment, the determination method of the microseism parameter threshold of the rock burst grade early warning further comprises the steps of:
It repeats step a) to step b) and obtains the corresponding microseism parameter of three rock burst grades in four rock burst grades respectively
Threshold value；
To described slight, medium, strong and extremely strong assignment R, R+a, R+2a and R+3a respectively, wherein R is any real number, a
For the real number of any non-zero；
Microseism ginseng is obtained according to the corresponding microseism parameter threshold of three rock burst grades and corresponding assignment that have obtained respectively
Number threshold value-rock burst grade assignment two-dimensional curve；
Acquisition fitting function is fitted to the microseism parameter threshold-rock burst grade assignment two-dimensional curve；
The corresponding assignment of the rock burst grade that microseism parameter threshold has not been obtained is substituted into the fitting function, to be calculated
The corresponding microseism parameter threshold of rock burst grade that microseism parameter threshold has not been obtained.
In one embodiment, R is equal to 1, a and is equal to 1.
In one embodiment, the microseism parameter threshold-rock burst grade assignment two-dimensional curve is fitted and is intended
The step of closing function specifically:
The fitting carried out linearly or nonlinearly to the microseism parameter threshold-rock burst grade assignment two-dimensional curve is fitted
Function.
In one embodiment, the microseism parameter threshold-rock burst grade assignment two-dimensional curve ordinate is microseism ginseng
Number threshold value, abscissa are the assignment of rock burst grade.
In one embodiment, in step a), standardization with extreme difference transformation is carried out to microseism parameter according to the following formula:
Xi *=(Xi-Xmin)/(Xmax-Xmin)
Wherein, Xi *For i-th of rock burst case microseism parameter standardization with extreme difference transformation after value；XiFor i-th of rock
Value of the microseism parameter of quick-fried case before standardization with extreme difference transformation；XminFor XiIn minimum value, XmaxFor XiIn maximum value.
In one embodiment, the microseism parameter of multiple rock burst cases of same rock burst grade is converted by standardization with extreme difference
In value later, maximum value is equal to 1, and minimum value is equal to 0.
Detailed description of the invention
Fig. 1 is the process in one embodiment of the invention for the determination method of the microseism parameter threshold of rock burst grade early warning
Figure；
Fig. 2 is the stream of step S200 in the determination method of the microseism parameter threshold shown in FIG. 1 for the early warning of rock burst grade
Cheng Tu.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figure 1, providing a kind of microseism parameter threshold for rock burst grade early warning in one embodiment of the invention
Determine method, comprising steps of
S100: standardization with extreme difference transformation is carried out to the microseism parameter of multiple rock burst cases of same rock burst grade, to make
Each rock burst case microseism performance metrics homogenization, the homogenization of rock burst incubation time length enables different rock burst cases
It is enough placed under unified scale and is analyzed and processed.
Specific to the rock burst case of same rock burst grade in embodiment, is collected, to obtain the rock burst of each rock burst case
The microseism parameter that the micro seismic monitoring of preparation process obtains.Then, standardization with extreme difference is carried out to the microseism parameter of each rock burst case
Transformation obtains the transformed microseism parameter of standardization with extreme difference.
S200: carrying out clustering to the transformed microseism parameter of standardization with extreme difference respectively, to remove standardization with extreme difference change
The rock burst case of microseism parameter discrete after changing.
Since the Precursor Law of not all rock burst is all it is obvious that certain in its preparation process show unusual microseism ginseng
Number is not representative.Therefore, it is necessary to the microseism parameters to each rock burst case to carry out clustering, to weed out discrete
Property larger, unusualr value do not pay attention to, it is pre- for rock burst grade to filter out the data more concentrated, with generality
It is alert.
S300: the average value of the microseism parameter before the standardization with extreme difference transformation of remaining rock burst case, the average value are calculated
As microseism parameter threshold corresponding with rock burst grade.
The determination method of the above-mentioned microseism parameter threshold for the early warning of rock burst grade, by very poor just to the progress of microseism parameter
After ruleization transformation, then carry out clustering, so that the rock burst case of microseism parameter discrete be rejected, filtered out microseism parameter compared with
For concentration, representative rock burst case, the validity of rock burst case in microseism parameter threshold acquisition process has been ensured, solved
The larger microseism parameter threshold for causing rock burst early warning of microseism parameter quantities otherness is difficult in the rock burst case of same rock burst grade
With accurately determining technical problem.
Specific in embodiment, the microseism parameter of each rock burst case includes accumulation microseismic event number, accumulation microseism release
At least one of can and accumulate microseism apparent volume.
Therefore, the accumulation microseismic event number threshold of same rock burst grade can be obtained by repeating step S100 to step S300
Value, accumulation microseism release can threshold value and accumulation microseism apparent volume threshold values.In this way, obtaining each microseism ginseng of same rock burst grade
Several microseism parameter thresholds.
In one embodiment, rock burst grade is divided into slight, medium, strong and extremely strong.In the rock burst of each rock burst grade
When case is sufficient, the determination method of the microseism parameter threshold of rock burst grade early warning is further comprised the steps of:
Step S100 to step S300 is repeated, obtains four rock burst grades (i.e. slight, medium, strong and extremely strong) respectively
Microseism parameter threshold.
In another embodiment, rock burst grade is divided into slight, medium, strong and extremely strong.Have one in four rock burst grades
When the rock burst case deficiency of a rock burst grade, the determination method of the microseism parameter threshold of rock burst grade early warning is further comprised the steps of:
Step S100 to step S300 is repeated to obtain respectively in four rock burst grades (i.e. slight, medium, strong and extremely strong)
Rock burst case abundance three rock burst grades microseism parameter threshold；
To it is slight, medium, strong and it is extremely strong successively distinguish assignment R, R+a, R+2a and R+3a, wherein R be any real number, a
For the real number of any non-zero；
Microseism ginseng is drawn according to the corresponding microseism parameter threshold of three rock burst grades and corresponding assignment that have obtained respectively
Number threshold value-rock burst grade assignment two-dimensional curve；
Acquisition fitting function is fitted to microseism parameter threshold-rock burst grade assignment two-dimensional curve；Specifically, it can carry out
Fitting linearly or nonlinearly.
The corresponding assignment of rock burst grade that microseism parameter threshold has not been obtained is substituted into the fitting function, to be calculated not
Obtain the corresponding microseism parameter threshold of rock burst grade of microseism parameter threshold.
In this way, using the fitting of data, obtaining best fit letter based on the rock burst grade for having obtained microseism parameter threshold
Number, and then the corresponding microseism parameter threshold of rock burst grade for lacking rock burst case is obtained, it solves certain rock burst grade and lacks rock burst
When case, technical problem that corresponding microseism parameter threshold can not determine.Preferably, R, which can be equal to 1, a, can be equal to 1.Namely
It says, to slight, medium, strong and extremely strong assignment 1,2,3 and 4 respectively.In this way, fitting function can be simplified, convenient for calculating.
Specific in embodiment, above-mentioned microseism parameter threshold-rock burst grade assignment two-dimensional curve ordinate is microseism ginseng
Number threshold value, abscissa are the assignment of rock burst grade.
In the embodiment of the present invention, in the step s 100, standardization with extreme difference change is carried out to microseism parameter according to the following formula
It changes:
Xi *=(Xi-Xmin)/(Xmax-Xmin)
Wherein, Xi *For i-th of rock burst case microseism parameter standardization with extreme difference transformation after value；XiFor i-th of rock
Value of the microseism parameter of quick-fried case before standardization with extreme difference transformation；XminFor XiIn minimum value, XmaxFor XiIn maximum value.
In this way, the microseism performance metrics of each rock burst case are homogenized, rock burst incubation time length homogenization, so that different rock bursts
Case can be placed under unified scale and be analyzed and processed.It is understood that i is the rock burst case in same rock burst grade
Number.
It should be noted that the microseism parameter of multiple rock burst cases of same rock burst grade is converted by standardization with extreme difference
Value later is between 0~1, and wherein maximum value is 1, minimum value 0.
In the embodiment of the present invention, step S200 specifically includes step:
S201: each rock burst case (it is assumed that the rock burst case one of the rock burst grade shares n) of same rock burst grade
In microseism parameter, the distance between the microseism parameter value of i-th and j-th rock burst case d is calculated separatelyij, wherein i, j=1,2,
3 ... n, and i is not equal to j.And it will distance dijThe microseism parameter value of the smallest two rock burst cases, which is averaged, merges into one
Microseism parameter value.Further, distance dijIt is calculated using following formula:
dij=| xi-xj|。
S203: repeating step S201, until only remaining a microseism parameter value.That is, executing step for the first time
Remaining n-1 microseism parameter value after rapid S201.Then step S201 is executed to second of the n-1 microseism parameter value again,
Remaining n-2 microseism parameter value.So continue third time, the 4th time ... execution step S201, until only one microseism is joined
Until numerical value.
S205: Cluster tendency is drawn.And according to Cluster tendency, by the distance d of microseism parameter valueijOutside a certain range
Rock burst case reject, that is, select microseism parameter value distance dijIn the range to the interior rock burst case more concentrated.Specifically
Ground, can be using the number of rock burst case as the abscissa of Cluster tendency, with the micro- of each rock burst case of same rock burst grade
It shakes in parameter, the distance between microseism parameter value of i-th and j-th rock burst case dijFor the ordinate of Cluster tendency.It is poly-
Class pedigree chart is plotted as the more conventional knowledge in this field, and details are not described herein.
It should be noted that by step S200 to every class microseism parameter of the rock burst case of each rock burst grade respectively into
Row clustering, the more discrete rock burst case of removal microseism parameter, to select microseism parameter more to concentrate, there is generality
Microseism parameter be used for the early warning of rock burst grade.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of determination method of the microseism parameter threshold for rock burst grade early warning, which is characterized in that comprising steps of
A) standardization with extreme difference transformation is carried out respectively to the microseism parameter of multiple rock burst cases of same rock burst grade；
B) clustering is carried out respectively to the transformed microseism parameter of standardization with extreme difference, it is transformed micro- to remove standardization with extreme difference
Shake the rock burst case of parameter discrete；
C) calculate the average value of the microseism parameter before the standardization with extreme difference transformation of remaining rock burst case, the average value as with
The corresponding microseism parameter threshold of the rock burst grade.
2. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 1, which is characterized in that each
The microseism parameter of rock burst case includes at least one accumulated in microseismic event number, accumulation microseism release energy and accumulation microseism apparent volume
It is a.
3. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 1, which is characterized in that rock burst
Grade is divided into slight, medium, strong and extremely strong.
4. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 3, which is characterized in that described
The determination method of the microseism parameter threshold of rock burst grade early warning further comprises the steps of:
Step a) to step c) is repeated, to obtain the corresponding microseism parameter threshold of four rock burst grades respectively.
5. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 3, which is characterized in that described
The determination method of the microseism parameter threshold of rock burst grade early warning further comprises the steps of:
It repeats step a) to step c) and obtains the corresponding microseism parameter threshold of three rock burst grades in four rock burst grades respectively；
To described slight, medium, strong and extremely strong assignment R, R+a, R+2a and R+3a respectively, wherein R is any real number, and a is to appoint
The real number of one non-zero；
Microseism parameter threshold is obtained according to the corresponding microseism parameter threshold of three rock burst grades and corresponding assignment that have obtained respectively
Value-rock burst grade assignment two-dimensional curve；
Acquisition fitting function is fitted to the microseism parameter threshold-rock burst grade assignment two-dimensional curve；
The corresponding assignment of the rock burst grade that microseism parameter threshold has not been obtained is substituted into the fitting function, to be calculated described
The corresponding microseism parameter threshold of rock burst grade of microseism parameter threshold has not been obtained.
6. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 5, which is characterized in that R etc.
It is equal to 1 in 1, a.
7. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 5, which is characterized in that institute
It states microseism parameter threshold-rock burst grade assignment two-dimensional curve and is fitted the step of obtaining fitting function specifically:
Fitting linearly or nonlinearly is carried out to the microseism parameter threshold-rock burst grade assignment two-dimensional curve and obtains fitting letter
Number.
8. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 5, which is characterized in that described
Microseism parameter threshold-rock burst grade assignment two-dimensional curve ordinate is microseism parameter threshold, and abscissa is the tax of rock burst grade
Value.
9. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 1, which is characterized in that in step
It is rapid a) in, according to the following formula to microseism parameter carry out standardization with extreme difference transformation:
Xi *=(Xi-Xmin)/(Xmax-Xmin)
Wherein, Xi *For i-th of rock burst case microseism parameter standardization with extreme difference transformation after value；XiFor i-th of rock burst case
Value of the microseism parameter of example before standardization with extreme difference transformation；XminFor XiIn minimum value, XmaxFor XiIn maximum value.
10. the determination method of the microseism parameter threshold of rock burst grade early warning according to claim 1, which is characterized in that same
In value after standardization with extreme difference transformation, maximum value is equal to the microseism parameter of the multiple rock burst case of one rock burst grade
1, minimum value is equal to 0.
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Application publication date: 20191122 |