CN109854290A - Advanced hydraulic support transverse and longitudinal is based on the non-equal strong supportings control method of fourier function - Google Patents
Advanced hydraulic support transverse and longitudinal is based on the non-equal strong supportings control method of fourier function Download PDFInfo
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- CN109854290A CN109854290A CN201910173099.8A CN201910173099A CN109854290A CN 109854290 A CN109854290 A CN 109854290A CN 201910173099 A CN201910173099 A CN 201910173099A CN 109854290 A CN109854290 A CN 109854290A
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Abstract
The invention discloses a kind of advanced hydraulic support transverse and longitudinals based on the non-equal strong supportings control method of fourier function, step are as follows: from winnning-off stress distribution law and roof cracking situation, divide advanced hydraulic support to column split control；Every frame advanced hydraulic support uses different first support intensity, according to tunnel pressure manifestation in exploitation process, carries out dynamic adjustment to the first support intensity of advanced hydraulic support.The present invention increases signal processing controller in advanced hydraulic support group circuit, it is installed on the column of every frame advanced hydraulic support between displacement sensor and the hydraulic control one-way valve and reversal valve of every frame advanced hydraulic support and adjustable compression release valve is set, adjusted in real time according to " secondary fourier function ".The present invention can be improved advanced hydraulic support to the adaptability of back country rock transverse and longitudinal and Time Change, realize the support pattern of low setting load and big working resistance, reduce because supporting the destruction to top plate repeatedly, is provided safeguard for coal resources safety high-efficiency mining.
Description
Technical field
The invention belongs to the technical fields of coal mining more particularly to a kind of advanced hydraulic support transverse and longitudinal to be based on Fourier
The non-equal strong supportings control method of function.
Background technique
Crossheading needs to carry out advance support within the scope of the advanced 20m of China's coal-mine safety code fully-mechanized mining working, with exploitation
The increasing of the increasing of intensity and deep complicated seam exploitation ratio, many practical advance supports of working face are apart from far super 20m.Mesh
Before, automatic moving type advanced hydraulic support has gradually replaced mainstream of mode of the individual prop with metal hinge top beam as advance support
Mode.Different from face condition, advanced crossheading is larger by mining influence close to working face and close to working face side, away from
It is smaller by mining influence from working face remotely and far from working face side, however the supporting intensity of advanced hydraulic support determines
When still continue to use the theory of working surface hydraulic support, all using identical just support intensity and supporting intensity in entire supporting segment limit
(wherein, setting load: for column by pump pressure to the active support force of top plate, biggish setting load can make column comparatively fast reach work
Resistance reduces the amount of crushing, and prevents early stage from removing.Just support intensity: bracket is known as just support to the setting load that unit area provides
Intensity.Working resistance: when bracket works normally, the maximum support power generated to top plate is known as working resistance, column specification sum number
After amount determines, working resistance depends on the pressure set points of column safety valve.Supporting intensity: the work that bracket provides unit area
It is known as supporting intensity as resistance), thus bring following influence:
(1) frame Forward need to drop in roof destruction, the working method of advanced hydraulic support repeatedly, and excessive setting load aggravates top plate
It destroys, apart from the farther away section of working face and far from the side of working face, because needing more number supports, roof cracking is especially
Obviously.
(2) excessive supporting, in the preferable coal mine of roof condition, most time inner column pressure much smaller than pumping plant for hydraulic,
Setting load state is not achieved.For improve working face supporting intensity, pump station pressure is continuously increased at present, Part Coal Mine pump pressure by
31.5MPa increases to 37.5MPa, and excessive setting load is more strong to the disturbance of advanced top plate.
(3) difficulty is adjusted, controls setting load, controllability by way of connecing top and stopping liquid with the experience of underground labour
Difference.
Therefore, it is necessary to be distributed according to the distribution of advanced crossheading pressure and exploitation process Pressure behaviour, determine that reasonable just support is strong
Degree carries out being segmented non-equal strong control, and the method provided convenient for manipulation.
Summary of the invention
Based on the above the deficiencies in the prior art, the problem to be solved by the present invention is that it is horizontal to provide a kind of advanced hydraulic support
It is longitudinal to be based on the non-equal strong supportings control method of fourier function, it can be improved advanced hydraulic support to back country rock transverse and longitudinal
With the adaptability of Time Change, the support pattern of low setting load and big working resistance is realized, reduce because being supported repeatedly to top
The destruction of plate provides safeguard for coal resources safety high-efficiency mining.
In order to solve the above-mentioned technical problem, the present invention is achieved through the following technical solutions:
The present invention provides a kind of advanced hydraulic support transverse and longitudinal and is based on the non-equal strong supportings control method of fourier function, including
Following steps:
S1: from winnning-off stress distribution law and roof cracking situation, divide advanced hydraulic support to column split control
System；
S2: every frame advanced hydraulic support uses different first support intensity, according to tunnel pressure manifestation in exploitation process, to super
The first support intensity of preceding hydraulic support carries out dynamic adjustment.
Optionally, in step sl:
Advanced hydraulic support is divided into three groups of two column, is a column, the other side far from working face close to the side of working face
For a column；Front and back is divided into three groups, and every group is made of left and right two advanced hydraulic supports arranged side by side.
Optionally, every group of advanced hydraulic support is set there are four column, and each column is equipped with hydraulic control one-way valve, the hydraulic control list
The rod chamber of control mouth and column to valve is connected, and the cavity of resorption of column is connected with safety valve；
The column of every group of advanced hydraulic support uses identical hydraulic control system, and is controlled by reversal valve.
Further, adjustable pressure-reducing valve is in series between the hydraulic control one-way valve and reversal valve of every frame advanced hydraulic support.
Further, displacement sensor is installed on each column, for measuring the decrement of column.
Further, signal processing controller is installed in the control loop of every group of advanced hydraulic support.
In step s 2: the supporting intensity of advanced hydraulic support adjusts in real time according to secondary fourier function.
By upper, advanced hydraulic support transverse and longitudinal of the invention is not changed based on the non-equal strong supportings control method of fourier function
Under the premise of working resistance, it can be realized the low setting load of advanced crossheading transverse and longitudinal, do not influence to reduce under the premise of supporting effect
Destruction of the advanced hydraulic support to top plate；To existing advanced hydraulic support without any change, only increase in advance timbering group circuit
Add a signal processing controller, installs in every frame bracket upright post and connect in a displacement sensor and every frame bracket control loop
One adjustable pressure-reducing valve can both be applied on newly design advance timbering, and be also convenient for the transformation of existing advance timbering group；It can be
In exploitation process, not only it is advanced also every frame can be adjusted in due course according to the variation of pressure with transverse and longitudinal Discrete control setting load value
The pressure set points of hydraulic support pressure reducing valve realize the dynamic coordinated control in groups with the advanced section stress distribution of crossheading.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, below in conjunction with preferred embodiment, and cooperates attached drawing, detailed description are as follows.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the attached drawing to embodiment is simply situated between below
It continues.
Fig. 1 is the layout drawing of advanced hydraulic support group of the invention；
Fig. 2 is the hydraulic control system schematic diagram of advanced hydraulic support column in Fig. 1.
In figure: 1-1,1-2 advanced hydraulic support group I；2-1,2-2 advanced hydraulic support group II；3-1,3-2 hydraulic branch in advance
Frame group III；4 columns；5 adjustable pressure-reducing valves；6 reversal valves；7 safety valves；8 hydraulic control one-way valves；9 signal processing controllers；10 displacements
Sensor；11 push-and-pull jack；12 adjust jack.
Specific embodiment
The embodiment of the invention will now be described in detail with reference to the accompanying drawings, and as part of this specification passes through
Embodiment illustrates the principle of the present invention, and other aspects of the present invention, feature and its advantage will become by the detailed description
It is very clear.In the attached drawing of institute's reference, the same or similar component is indicated using identical drawing reference numeral in different figures.
The present invention relates to a kind of advanced crossheading roof timbering determination method for parameter of fully-mechanized mining working, and in particular to Yi Zhongchao
Preceding hydraulic support transverse and longitudinal is based on fourier function setting load and is segmented the strong control method such as non-, advanced for work at present face crossheading
Single setting load bring roof destruction and excessive turbulence problem are used within the scope of the entire supporting of hydraulic support, are proposed " secondary
The non-equal strong supportings principle of fourier function ", and a kind of advanced crossheading transverse and longitudinal Discrete control is provided by the improvement of hydraulic system
Implementation method.
As shown in Figure 1, being the layout drawing of certain mine working face air return way advanced hydraulic support group, it is a kind of by two column
The advance support rack group of three groups of advanced hydraulic supports composition is a column close to the side of working face, another far from working face
Side is a column, and the two frame advanced hydraulic supports of left and right side by side are one group, is whole, advance support distance by adjusting jack 12
(to working face distance) is 30m.Advanced hydraulic support I1-1 in the present embodiment, 1-2 are close to working face, advanced hydraulic support group
II2-1,2-2 are middle frame, and advanced hydraulic support group III3-1,3-2 are file leader's frame, are equipped between two adjacent groups advanced hydraulic support
Push and pull jack 11.Three groups of advanced hydraulic supports use the column 4 of same types and quantity, supporting area and column number ratio
Value is close, and equal just support intensity can be basically reached under identical liquid supply pressure.Every group of advanced hydraulic support is set there are four column, often
Column there are two being set on frame advanced hydraulic support.Every group is made of left and right two advanced hydraulic supports arranged side by side, and every group and every group
Left and right two stands all use different first support intensity, successively reduce from work towards support intensity at the beginning of coal wall direction, close to working face
Side is greater than the other side and just supports intensity.
As shown in Fig. 2, the column 4 of every group of advanced hydraulic support uses identical hydraulic control system, pass through a piece of three
Four-way reversing valve 6 controls four columns 4 of one group of advanced hydraulic support, and each column 4 is equipped with hydraulic control one-way valve 8, fluid-control one-way
The control mouth of valve 8 is connected with the rod chamber of column 4, and the cavity of resorption of column 4 is connected with safety valve 7.In hydraulic control system of the invention
In system, increase a signal processing controller 9 in the control loop of advanced hydraulic support group, every frame advanced hydraulic support is stood
One displacement sensor 10 is installed on column, is in series between the hydraulic control one-way valve 8 and reversal valve 6 of every frame advanced hydraulic support adjustable
Pressure reducing valve 5.
In the particular embodiment, working face pump station pressure is 31.5MPa, utilizes what is installed on every frame advanced hydraulic support
Displacement sensor 10 obtains the shrinkage Δ l of the column 4 of every frame advanced hydraulic support, and the column by every frame advanced hydraulic support is rigid
The product of the column shrinkage Δ l of degree K and every frame advanced hydraulic support can get the supporting intensity of every frame advanced hydraulic support, benefit
With signal processing controller 9, the pre- of the adjustable pressure-reducing valve 5 of every frame advanced hydraulic support can be found out according to " secondary fourier function "
If value.According to the propulsion of working face and the supporting effect of advanced hydraulic support, can be adjusted at any time in advance of the face process
It is whole, to adapt to the variation of roof conditions.During liter frame, when the top beam of advanced hydraulic support contacts top plate, until under column
When the fluid pressure of chamber gradually rises to the setting pressure of adjustable pressure-reducing valve 5, stop feed flow, hydraulic control one-way valve 8 is closed immediately, real
First support strength control of the existing advanced hydraulic support to top plate.The size of advanced hydraulic support setting load depends on adjustable pressure-reducing valve 5
Operating pressure, the cylinder diameter of column 4 and the quantity of column 4, adjustable pressure-reducing valve 5 can determine that by " secondary fourier function "
Specific preset value realizes that supporting is just supportted by force in the accurate control of low setting load and non-wait of transverse and longitudinal segmentation.
Increase a signal processing controller 9 in the control loop of advanced hydraulic support group, one group controlled side by side is super
Preceding hydraulic support with a piece of reversal valve 6 by controlling, installation displacement sensor 10 on the column 4 of every frame advanced hydraulic support, and every group
Increase an adjustable pressure-reducing valve 5 between the hydraulic control one-way valve 8 of the column cavity of resorption of reversal valve 6 and every frame advanced hydraulic support, will be displaced
In the decrement input signal processing controller 9 of the column 4 for every frame advanced hydraulic support that sensor 10 measures, according to advanced liquid
It presses the supporting intensity of bracket to be equal to the column rigidity of every frame advanced hydraulic support and the product of decrement, it is hydraulic in advance that every frame can be found out
The supporting intensity of bracket, the bracket support intensity of right next two columns are fitted, Jin Ergen according to " secondary fourier function " respectively
It can determine the reasonable value of adjustable pressure-reducing valve 5 of every frame advanced hydraulic support, the value that safety valve 7 is set up according to " secondary fourier function "
It remains unchanged, the working resistances such as holding, and working resistance keeps the larger value as far as possible.
In the present invention, appropriate to increase close to the plastic zone of working face and higher-pressure region are big by back production disturbance, roadway deformation is violent
Big setting load can prevent from directly pushing up premature sinking absciss layer, slow down and crush speed and increase its stability, because of big first support
Roof destruction caused by power can be thrown to goaf with the propulsion of working face within a short period of time, influence relatively small.It is separate
Working face side and apart from working face remotely, advanced stress and successively decreased by back production strength of turbulence it is small, because repeatedly move frame need
Support often, therefore suitably reduce setting load, can reduce while guaranteeing supporting effect to roof destruction.When entire suitable
Slot be hit pressure influence when, with the sinking of top plate, the fluid pressure of column cavity of resorption is gradually risen, automatic moving type hydraulic branch in advance
Frame is also increasing to the support force of top plate, presents and increases resistance state, until further increasing with roof pressure, column cavity of resorption
Fluid pressure it is higher and higher, when being increased to set pressure for safety valve, safety valve open overflow constant-resistance state, that is, reach
Working resistance.Big working resistance helps to resist surge, and maintenance tunnel is complete.The pressure of safety valve setting, which is not done, to be subtracted
It is small, big working resistance is still kept, therefore low setting load will not bring being substantially reduced for supporting effect.
Advanced hydraulic support transverse and longitudinal of the invention is directed to current work based on the non-equal strong supportings control method of fourier function
Make to ask within the scope of the entire supporting of face crossheading advanced hydraulic support using single setting load bring roof destruction and excessive turbulence
Topic proposes that " secondary fourier function " is non-and waits strong supportings principle, and provides a kind of advanced crossheading cross by the improvement of hydraulic system
The implementation method of longitudinal divisions control.The present invention increases signal processing controller in advanced hydraulic support group circuit, and every frame is super
It is installed between displacement sensor and the hydraulic control one-way valve and reversal valve of every frame advanced hydraulic support on the column of preceding hydraulic support
Adjustable compression release valve is set, and pressure is not more than pump station pressure, and every frame that occurrence can be measured according to displacement sensor is hydraulic in advance
The decrement of the column of bracket is adjusted through signal processing controller according to " secondary fourier function " in real time.It is proposed by the present invention
Non- equal strong supportings control method can be improved advanced hydraulic support and fit to back country rock transverse and longitudinal and Time Change
Ying Xing realizes the support pattern of low setting load and big working resistance, reduces because supporting the destruction to top plate repeatedly, is coal resources
Safety and high efficiency provides safeguard.
The above is a preferred embodiment of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, it is noted that for those skilled in the art, without departing from the principle of the present invention, may be used also
To make several improvement and variation, these, which improve and change, is also considered as protection scope of the present invention.
Claims (7)
1. advanced hydraulic support transverse and longitudinal is based on, fourier function is non-to wait strong supportings control method, which is characterized in that including following
Step:
S1: from winnning-off stress distribution law and roof cracking situation, divide advanced hydraulic support to column split control；
S2: every frame advanced hydraulic support uses different first support intensity, according to tunnel pressure manifestation in exploitation process, to advanced liquid
The first support intensity of bracket is pressed to carry out dynamic adjustment.
2. advanced hydraulic support transverse and longitudinal as described in claim 1 is based on, fourier function is non-to wait strong supportings control method,
It is characterized in that, in step sl:
Advanced hydraulic support is divided into three groups of two column, is a column close to the side of working face, the other side far from working face is one
Column；Front and back is divided into three groups, and every group is made of left and right two advanced hydraulic supports arranged side by side.
3. advanced hydraulic support transverse and longitudinal as claimed in claim 2 is based on, fourier function is non-to wait strong supportings control method,
It is characterized in that, every group of advanced hydraulic support is set there are four column, and each column is equipped with hydraulic control one-way valve, the hydraulic control one-way valve
Control mouth is connected with the rod chamber of column, and the cavity of resorption of column is connected with safety valve；
The column of every group of advanced hydraulic support uses identical hydraulic control system, and is controlled by reversal valve.
4. advanced hydraulic support transverse and longitudinal as claimed in claim 3 is based on, fourier function is non-to wait strong supportings control method,
It is characterized in that, is in series with adjustable pressure-reducing valve between the hydraulic control one-way valve and reversal valve of every frame advanced hydraulic support.
5. advanced hydraulic support transverse and longitudinal as claimed in claim 3 is based on, fourier function is non-to wait strong supportings control method,
It is characterized in that, displacement sensor is installed on each column, for measuring the decrement of column.
6. advanced hydraulic support transverse and longitudinal as claimed in claim 2 is based on, fourier function is non-to wait strong supportings control method,
It is characterized in that, signal processing controller is installed in the control loop of every group of advanced hydraulic support.
7. advanced hydraulic support transverse and longitudinal as described in claim 1 is based on, fourier function is non-to wait strong supportings control method,
It is characterized in that, in step s 2: the supporting intensity of advanced hydraulic support adjusts in real time according to secondary fourier function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910173099.8A CN109854290A (en) | 2019-03-07 | 2019-03-07 | Advanced hydraulic support transverse and longitudinal is based on the non-equal strong supportings control method of fourier function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910173099.8A CN109854290A (en) | 2019-03-07 | 2019-03-07 | Advanced hydraulic support transverse and longitudinal is based on the non-equal strong supportings control method of fourier function |
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| CN109854290A true CN109854290A (en) | 2019-06-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410115A (en) * | 2019-07-22 | 2019-11-05 | 天地科技股份有限公司 | A kind of column pressure adaptive regulator control system |
| CN110469357A (en) * | 2019-07-12 | 2019-11-19 | 淮北矿业股份有限公司 | A kind of Setting Load of Powered Supports automatic control device |
| CN111255499A (en) * | 2020-03-17 | 2020-06-09 | 兖矿集团有限公司 | Control device for sliding top moving frame, corresponding hydraulic support and sliding top moving frame method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453970A (en) * | 2014-11-17 | 2015-03-25 | 天地科技股份有限公司 | Non-equal-strength supporting control method for fore hydraulic supports |
-
2019
- 2019-03-07 CN CN201910173099.8A patent/CN109854290A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453970A (en) * | 2014-11-17 | 2015-03-25 | 天地科技股份有限公司 | Non-equal-strength supporting control method for fore hydraulic supports |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469357A (en) * | 2019-07-12 | 2019-11-19 | 淮北矿业股份有限公司 | A kind of Setting Load of Powered Supports automatic control device |
| CN110410115A (en) * | 2019-07-22 | 2019-11-05 | 天地科技股份有限公司 | A kind of column pressure adaptive regulator control system |
| CN110410115B (en) * | 2019-07-22 | 2020-11-17 | 天地科技股份有限公司 | Self-adaptive control system for pressure of stand column |
| CN111255499A (en) * | 2020-03-17 | 2020-06-09 | 兖矿集团有限公司 | Control device for sliding top moving frame, corresponding hydraulic support and sliding top moving frame method |
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Application publication date: 20190607 |