CN106441669A - Method for judging pressure of roof plate of coal mine working face - Google Patents
Method for judging pressure of roof plate of coal mine working face Download PDFInfo
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- CN106441669A CN106441669A CN201610788723.1A CN201610788723A CN106441669A CN 106441669 A CN106441669 A CN 106441669A CN 201610788723 A CN201610788723 A CN 201610788723A CN 106441669 A CN106441669 A CN 106441669A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000003245 coal Substances 0.000 title claims abstract description 15
- 230000000737 periodic effect Effects 0.000 claims description 5
- 230000002085 persistent effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005065 mining Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
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Abstract
The invention provides a method for judging the coming pressure of a roof plate of a coal mine working face, which comprises the following steps: collecting working parameters of the hydraulic support, wherein the working parameters comprise a pressure value and pressure duration of the hydraulic support, and determining initial supporting force and final resistance of the hydraulic support according to the pressure value; calculating the average working resistance of the hydraulic support according to the working parameters of the hydraulic support; judging whether the top plate corresponding to the current hydraulic support has the possibility of coming pressure according to the average working resistance and the final resistance of the hydraulic support; if the top plates corresponding to the hydraulic supports with the number exceeding the set number in the set time period in all the hydraulic supports in the working face demarcating area have the possibility of coming pressure, judging that the top plate of the working face in the current area is coming pressure; whether the roof will be pressed in the mine can be accurately judged, and the safety risk in the mine operation is eliminated.
Description
Technical field
The present invention relates to mine field, more particularly, to a kind of coal mine work area roof weighting decision method.
Background technology
In the mines such as colliery, after work surface pushes to adopt, country rock original structure receives destruction, and roof strata can occur week
The fracture of phase property, across falling, i.e. periodic weighting, generally require support and top board be supported, typically adopt hydraulic support, and making
During industry, hydraulic support is carried out according to the circular order that fall frame moves frame liter valency.In prior art, for face roof
Whether to press and to rely primarily on professional's experience and judged, to have that poor in timeliness, accuracy rate be low, weak the asking of actual directive significance
, there is security risk in topic.
It is, therefore, desirable to provide a kind of new roof weighting decision method, can in mine top board whether can occur to come
Pressure is accurately judged and relatively low to professional's dependency, eliminates security risk present in mine operation, is coal mine fully-mechanized mining
Work surface engineering quality control provides scientific basis.
Content of the invention
In view of this, it is an object of the invention to provide a kind of coal mine work area roof weighting decision method, can be to mine
Whether accurately being judged and relatively low to professional's dependency to press of middle top board, eliminates present in mine operation
Security risk, provides scientific basis for coal mine fully-mechanized mining working engineering quality control.
A kind of coal mine work area roof weighting decision method that the present invention provides, comprises the steps：
Comprise the steps：
S1. gather the running parameter of hydraulic support, when running parameter includes the pressure value of hydraulic support and pressure continues
Between, and the setting load of hydraulic support and last resistance are determined according to pressure value；
S2. the running parameter according to hydraulic support calculates the average operation resistance of hydraulic support；
S3. whether the average operation resistance according to hydraulic support and last resistance judge the corresponding top board of current hydraulic support
Exist and to press probability；
S4. judge in all hydraulic support in work surface defined area, exceed the hydraulic support setting quantity when setting
Between corresponding top board in section exist to press probability, then judge work at present face roof weighting.
Further, in step S1, setting load is determined according to following method：
S11., after the time t1 that interval sets in the last resistance of last circulation, examination in the time t2 setting currently follows
Pressure detected by ring；
S12., in setting time t2, if having multiple pressure value exceeding specified setting load, first is exceeded volume
The design of pressure determining setting load is the setting load of previous cycle；
In setting time t2, if all pressure value detecting are respectively less than specified setting load, continue to setting time
Examination in pressure value after t2, choosing first pressure value being more than specified setting load is specified setting load；
In setting time t2, it is in 10Mpa to yield load if there are pressure value, then select 10Mpa to volume
Determine maximum pressure value between working resistance as setting load.
Further, in step S1, last Resistance Value is determined according to following method：
After the setting load value determining previous cycle, if occurring first being gradually increased and then wink in certain time side pressure force value
Between drop under setup pressure value, then judge the maximum pressure value of current slot as last Resistance Value.
Further, in step S2, average operation resistance is determined according to equation below:
P=(P1T1+P1T1+…+PNTN)/(T1+T2+…+TN)
Wherein：P is average operation resistance, PNFor n-th pressure value in previous cycle；TNFor each pressure of N in previous cycle
The persistent period of value.
Further, in step S3, judge the corresponding top board of hydraulic support whether pressing according to following method：
S31. roof weighting criterion P is calculated according to equation belowt′：
Wherein：
σPFor the mean square deviation of the last resistance of circulation, n is period, PtiThe last resistance of each circulation,Average for last resistance
Value；
As last resistance P>Pt', then judge that the corresponding top board of this hydraulic support meets to press criterion.
S32. according to the corresponding top board of hydraulic support in following rule judgment region whether pressing：
If the last resistance of single support exceedes roof weighting criterion, it is judged as this data fit single-side stand cycle
Pressure criterion, and calculate the standoff criterion of institute in one's respective area successively, integrate in one's respective area and meet single support periodic weighting criterion
Data, meets to press criterion in setting time T if there are the hydraulic support setting more than quantity simultaneously, is judged as that this region is come
Pressure.
Beneficial effects of the present invention：The coal mine work area roof weighting decision method of the present invention, can be to top board in mine
Whether accurately can be judged to press, relatively low to professional's dependency, improve judged result accuracy, Er Qieneng
Enough it is beneficial to make accurate task instruction measure according to judged result, thus eliminating security risk present in mine operation.
Brief description
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the flow chart of the present invention.
Fig. 2 is the setting load of the present invention, the characteristic curve diagram of last resistance.
Specific embodiment
Fig. 1 is the flow chart of the present invention, as illustrated, a kind of coal mine work area roof weighting judgement side that the present invention provides
Method, comprises the steps：
Comprise the steps：
S1. gather the running parameter of hydraulic support, when running parameter includes the pressure value of hydraulic support and pressure continues
Between, and the setting load of hydraulic support and last resistance are determined according to pressure value；
S2. the running parameter according to hydraulic support calculates the average operation resistance of hydraulic support；
S3. whether the average operation resistance according to hydraulic support and last resistance judge the corresponding top board of current hydraulic support
Exist and to press probability；
S4. judge in all hydraulic support in work surface defined area, exceed the hydraulic support setting quantity when setting
Between corresponding top board in section exist to press probability, then judge work at present face roof weighting；Set quantity and be generally support
The 1/2 of sum；Such as in work surface overlay area, if there are 10 hydraulic supports, wherein, 5 hydraulic supports are all determined
Corresponding top board there is a possibility that to press, then show that whole working region can be pressing；Judge by above-mentioned
Method, can be improved the accuracy of judged result, Er Qieneng to whether accurately the judging to press of top board in mine
Enough it is beneficial to make accurate task instruction measure according to judged result, thus eliminating security risk present in mine operation.
In the present embodiment, in step S1, setting load is determined according to following method：
S11., after the time t1 that interval sets in the last resistance of last circulation, examination in the time t2 setting currently follows
Pressure detected by ring；
S12., in setting time t2, if having multiple pressure value exceeding specified setting load, first is exceeded volume
The design of pressure determining setting load is the setting load of previous cycle；
In setting time t2, if all pressure value detecting are respectively less than specified setting load, continue to setting time
Examination in pressure value after t2, choosing first pressure value being more than specified setting load is specified setting load；
In setting time t2, it is in 10Mpa to yield load if there are pressure value, then select 10Mpa to volume
Determine maximum pressure value between working resistance as setting load
Wherein, setting time t1 generally 1 minute, setting time t2 generally 3 minutes, setting time t1 and setting time
T2 can be set according to actual condition；
In step S1, last Resistance Value is determined according to following method：
After the setting load value determining previous cycle, if occurring first being gradually increased and then wink in certain time side pressure force value
Between drop under setup pressure value, then judge the maximum pressure value of current slot as last Resistance Value, as shown in Fig. 2 passing through
Said method, can accurately determine the setting load of a circulation and last resistance, thus beneficial to the judgement finally to press.
In the present embodiment, in step S2, average operation resistance is determined according to equation below:
P=(P1T1+P1T1+…+PNTN)/(T1+T2+…+TN)
Wherein：P is average operation resistance, PNFor n-th pressure value in previous cycle；TNFor each pressure of N in previous cycle
The persistent period of value.
In the present embodiment, in step S3, judge the corresponding top board of hydraulic support whether pressing according to following method：
S31. roof weighting criterion P is calculated according to equation belowt′：
Wherein：
σPFor the mean square deviation of the last resistance of circulation, n is period, PtiThe last resistance of each circulation,Average for last resistance
Value；
As last resistance P>Pt', then judge that the corresponding top board of this hydraulic support meets to press criterion.
S32. according to the corresponding top board of hydraulic support in following rule judgment region whether pressing：
If the last resistance of single support exceedes roof weighting criterion, it is judged as this data fit single-side stand cycle
Pressure criterion, and calculate the standoff criterion of institute in one's respective area successively, integrate in one's respective area and meet single support periodic weighting criterion
Data, meets to press criterion in setting time T if there are the hydraulic support setting more than quantity simultaneously, is judged as that this region is come
Pressure, wherein, sets the 1/2 of quantity generally region class total hydraulic support number, setting time T is set according to actual condition,
Such as 2 hours or 4 hours etc.；
In the above-mentioned methods, the support situation of hydraulic support can be analyzed by average operation resistance, and sentence to press
According to jointly coming work surface overlay area be whether there is to press probability to be analyzed, improve precision of analysis, thus
It is beneficial to eliminate safe hidden trouble.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the middle of the right of invention.
Claims (5)
1. a kind of coal mine work area roof weighting decision method it is characterised in that：Comprise the steps：
S1. gather the running parameter of hydraulic support, running parameter includes pressure value and the pressure duration of hydraulic support, and
The setting load of hydraulic support and last resistance are determined according to pressure value；
S2. the running parameter according to hydraulic support calculates the average operation resistance of hydraulic support；
S3. the average operation resistance according to hydraulic support and last resistance judge that the corresponding top board of current hydraulic support whether there is
To press probability；
S4. judge in all hydraulic support in work surface defined area, exceed the hydraulic support setting quantity in setting time section
Interior corresponding top board exists to press probability, then judge work at present face roof weighting.
2. according to claim 1 coal mine work area roof weighting decision method it is characterised in that：In step S1, according to such as
Lower method determines setting load：
S11. after the time t1 that interval sets in the last resistance of last circulation, examination previous cycle institute in the time t2 setting
The pressure detecting；
S12. in setting time t2, if having multiple pressure value exceeding specified setting load, first is exceeded specified first
The design of pressure of support force is the setting load of previous cycle；
In setting time t2, if all pressure value detecting are respectively less than specified setting load, continue to after setting time t2
Pressure value in examination, choose first be more than specified setting load pressure value be specified setting load；
In setting time t2, it is in 10Mpa to yield load if there are pressure value, then select 10Mpa to specified work
Make maximum pressure value between resistance as setting load.
3. according to claim 2 coal mine work area roof weighting decision method it is characterised in that：In step S1, according to such as
Lower method determines last Resistance Value：
After the setting load value determining previous cycle, if occurring first being gradually increased and then under moment in certain time side pressure force value
Drop under setup pressure value, then judge the maximum pressure value of current slot as last Resistance Value.
4. according to claim 1 coal mine work area roof weighting decision method it is characterised in that：In step S2, according to such as
Lower formula determines average operation resistance:
P=(P1T1+P1T1+…+PNTN)/(T1+T2+…+TN)
Wherein：P is average operation resistance, PNFor n-th pressure value in previous cycle；TNFor each pressure value of N in previous cycle
Persistent period.
5. according to claim 1 coal mine work area roof weighting decision method it is characterised in that：In step S3, according to such as
Lower method judges whether the corresponding top board of single hydraulic support meets to press criterion：
S31. roof weighting criterion P is calculated according to equation belowt′：
Wherein：
σPFor the mean square deviation of the last resistance of circulation, n is period, PtiThe last resistance of each circulation,Meansigma methodss for last resistance；
As last resistance P>Pt', then judge that the corresponding top board of this hydraulic support meets to press criterion.
S32. according to the corresponding top board of hydraulic support in following rule judgment region whether pressing：
If the last resistance of single support exceedes roof weighting criterion, it is judged as that this data fit single-side stand periodic weighting is sentenced
According to, and calculate the standoff criterion of institute in one's respective area successively, integrate in one's respective area and meet single support periodic weighting criteria data,
Meet to press criterion if there are the hydraulic support setting more than quantity in setting time T simultaneously, be judged as this region to press.
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Cited By (9)
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| CN109272007A (en) * | 2018-07-07 | 2019-01-25 | 河南理工大学 | Setting load, last resistance recognition methods, storage medium based on deep neural network |
| CN109522612A (en) * | 2018-10-26 | 2019-03-26 | 山东科技大学 | A method of based on comprehensive mining hydraulic bracket stress inverting immediate roof thickness |
| CN109798138A (en) * | 2019-01-09 | 2019-05-24 | 天地科技股份有限公司 | A kind of circulation end drag prediction method of the hydraulic support suitable for fully-mechanized mining working |
| CN110847968A (en) * | 2019-10-29 | 2020-02-28 | 青岛本末岩控技术有限公司 | Periodic pressure-bearing dividing method based on maximum working resistance curve of support cycle |
| CN111681125A (en) * | 2020-07-08 | 2020-09-18 | 神华神东煤炭集团有限责任公司 | Top plate pressure calculation method, storage medium, and electronic apparatus |
| CN111734492A (en) * | 2020-07-02 | 2020-10-02 | 中国矿业大学 | Intelligent working surface roof fall early warning method based on U-shaped area characteristic parameter extraction |
| CN111879538A (en) * | 2020-07-09 | 2020-11-03 | 郑州普泽能源科技有限公司 | Top plate incoming pressure accurate monitoring method |
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| CN112798042A (en) * | 2020-12-30 | 2021-05-14 | 中国矿业大学 | Intelligent diagnosis method for working state and supporting quality of hydraulic support |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109272007B (en) * | 2018-07-07 | 2021-07-02 | 河南理工大学 | Initial supporting force and terminal resistance identification method based on deep neural network and storage medium |
| CN109272007A (en) * | 2018-07-07 | 2019-01-25 | 河南理工大学 | Setting load, last resistance recognition methods, storage medium based on deep neural network |
| CN109522612A (en) * | 2018-10-26 | 2019-03-26 | 山东科技大学 | A method of based on comprehensive mining hydraulic bracket stress inverting immediate roof thickness |
| CN109798138A (en) * | 2019-01-09 | 2019-05-24 | 天地科技股份有限公司 | A kind of circulation end drag prediction method of the hydraulic support suitable for fully-mechanized mining working |
| CN110847968A (en) * | 2019-10-29 | 2020-02-28 | 青岛本末岩控技术有限公司 | Periodic pressure-bearing dividing method based on maximum working resistance curve of support cycle |
| CN111734492A (en) * | 2020-07-02 | 2020-10-02 | 中国矿业大学 | Intelligent working surface roof fall early warning method based on U-shaped area characteristic parameter extraction |
| CN111734492B (en) * | 2020-07-02 | 2021-08-24 | 中国矿业大学 | Intelligent working surface roof fall early warning method based on U-shaped area characteristic parameter extraction |
| CN111681125A (en) * | 2020-07-08 | 2020-09-18 | 神华神东煤炭集团有限责任公司 | Top plate pressure calculation method, storage medium, and electronic apparatus |
| CN111879538A (en) * | 2020-07-09 | 2020-11-03 | 郑州普泽能源科技有限公司 | Top plate incoming pressure accurate monitoring method |
| CN111879538B (en) * | 2020-07-09 | 2022-09-20 | 郑州普泽能源科技有限公司 | Top plate incoming pressure accurate monitoring method |
| CN112302720A (en) * | 2020-09-30 | 2021-02-02 | 中煤科工开采研究院有限公司 | Method and system for judging initial supporting force and cycle end resistance of working surface hydraulic support |
| CN112302720B (en) * | 2020-09-30 | 2023-02-28 | 中煤科工开采研究院有限公司 | Method and system for judging initial supporting force and cycle end resistance of working surface hydraulic support |
| CN112798042A (en) * | 2020-12-30 | 2021-05-14 | 中国矿业大学 | Intelligent diagnosis method for working state and supporting quality of hydraulic support |
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Application publication date: 20170222 |