CN102242630A - Pressure stress monitoring pressure cushion and monitoring device for flexible mines as well as monitoring method of monitoring device - Google Patents
Pressure stress monitoring pressure cushion and monitoring device for flexible mines as well as monitoring method of monitoring device Download PDFInfo
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- CN102242630A CN102242630A CN2011100364822A CN201110036482A CN102242630A CN 102242630 A CN102242630 A CN 102242630A CN 2011100364822 A CN2011100364822 A CN 2011100364822A CN 201110036482 A CN201110036482 A CN 201110036482A CN 102242630 A CN102242630 A CN 102242630A
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Abstract
The invention discloses a pressure stress monitoring pressure cushion and monitoring device for flexible mines as well as a monitoring method of the monitoring device. In the invention, a flexible pressure cushion is used for replacing the traditional rigid pressure cushion, and closely contacts with hole walls after being pressurized; and when the pressure stress of coal rock mass is monitored, if only the rock mass generates a slight pressure, the pressure can be captured, thereby eliminating the phenomena of inaccurate and lost reading and solving the problem of insensitivity of the pressure cushion, so that the drill pressure stress can be monitored more accurately in time, and more accurate pressure parameters can be provided for scientific research and safety production management.
Description
Technical field
The invention belongs to the monitoring device in mining and rock mass engineering project field.
Background technology
Underground mining stope space coal and rock often is in the effect of changeable strongly compressive stress field, and the variation of stope pressure from surrounding rock directly has influence on the effect quality of supporting method and the safety of personnel and equipment.Along with the continuing to increase of the coal mining degree of depth, dynamics and scale, have the problem of two aspects will seem more and more serious in recent years: the one, the compressive stress of the coal and rock of mining roadway increases; The 2nd, have the mine of generation bump tendency and have the quantity and the occurrence frequency of the mine of coal and gas outburst risk to increase year by year.Usually need in the engineering to quantize monitoring, so the stress of primary rock, country rock compressive stress, stope pressure distribution, obtaining for scientific research and production safety management of coal column abutment pressure equal pressure parameter all have very important effect to bringing out the compressive stress that digging space coal and rock destroys.Above-mentioned parameter mainly relies on and uses the monitoring equipment to obtain.
Monitoring device mainly is to be connected to form by high-pressure rubber pipe by pressure cushion, priming device and pressure-detecting device at present.Wherein above-mentioned parameter mainly relies on working pressure to rest the head on to obtain.Present pressure cushion adopts two block plate shapings to be welded.Because the steel plate rigidity is big, be not easy distortion, so sensitivity is low.Owing to need be installed in the coal and rock, need on the coal petrography wall, play several or tens borings, then pressure cushion is pushed and put into boring, it is strict to put into angle, and installation steps are loaded down with trivial details, so pressure cushion is put the error rate height, and pressure cushion has certain interval in the hole, makes to monitor the initial pressure value early, causes the data transformation mistake easily, or the monitoring failure, thereby can't satisfy scientific research and production safety management demand.Given this plant situation, need a kind of simple to operation, resolution ratio and highly sensitive, the monitored data compressive stress monitoring device of holing accurately.
Summary of the invention
The objective of the invention is for mine compressive stress monitoring provides a kind of flexible mine compressive stress monitoring pressure pillow, and the monitoring device of making by this pressure cushion and the monitoring method of enforcement the resolution ratio that exists with solution and sensitivity is low and the problem of difficult installation.
For achieving the above object, the technical scheme that pressure cushion of the present invention adopts is: it comprises a flexible shell, the sealing of flexible shell one end, and the other end is provided with socket, by the guiding liquid injection pipe of a hard of socket insertion, the socket of guiding liquid injection pipe and housing will be realized pressure-resistant seal.
Described flexible shell carrying compressive stress is more preferably greater than 15Mpa.
Described flexible shell generally adopts nitrile rubber class material to make;
Described hard guiding liquid injection pipe generally adopts nylon rod to make, and its effect one is a guiding, makes flexible shell put into boring easily; The 2nd, oiling or emulsion are used for pressure detecting in flexible shell.
With the guiding liquid injection pipe of pressure cushion of the present invention and pressure survey read apparatus is connected monitoring device, on pressure survey read apparatus, be provided with the fluid injection by-pass valve control.
The monitoring method of monitoring device of the present invention is:
The first step: pressure cushion is put into the boring of coal petrography wall, by-pass valve control is connected with priming device, utilizes priming device to fill withstand voltage oil or emulsion by the guiding liquid injection pipe to pressure cushion inside, getting up until the pressure cushion blow-up closely contacts with the boring inwall, valve-off takes off priming device then;
Second step: survey read apparatus by pressure and read an initial value, when the boring compressive deformation, pressure is surveyed on the read apparatus a new reading will occur, front and back pressure reduction is instant force value, every then interval certain hour reading and recording one secondary data, draw the coal rock layer pressure history, analyze the coal rock layer pressure changing according to pressure history.Because pressure cushion is flexible, sensitivity is very high, and very little compressive stress changes and can both be captured by it.
The invention has the beneficial effects as follows that pressure cushion is simple in structure, easy for installation, shell adopts flexible material, makes pressure cushion need not note the direction of putting when putting into boring, directly pushes to put into to get final product.Closely contact with hole wall after the pressurising,, just can pounce on and grasp as long as rock mass has pressure a little, read untrue and loss situation have been solved, and the insensitive problem of pressure cushion, monitoring boring compressive stress that can be more accurately and timely is for scientific research and production safety management provide pressure parameter more accurately.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the constructional drawing of pressure cushion in the embodiment of the invention.
Fig. 2 is the schematic diagram of the embodiment of the invention one.
Fig. 3 is the schematic diagram of the embodiment of the invention two.
Among the figure: 1-boring, 2-pressure cushion, 3-high-pressure rubber pipe, 4-coal petrography wall, 5a-oil pump, 5b-fluid injection gun, 6-pressure meter, 7-digital display meter, 8-by-pass valve control, 9-linker, 10-flexible shell, the 11-liquid injection pipe that leads.
The specific embodiment
As can be seen from Figure 1, pressure cushion 2 of the present invention comprises a flexible shell 10, the sealing of flexible shell 10 1 ends, and the other end is provided with socket, inserts a hard guiding liquid injection pipe 11 by socket, and guiding liquid injection pipe 11 is realized pressure-resistant seal with the socket of flexible shell 10.
Embodiment of monitoring device that Fig. 2 is made up of pressure cushion of the present invention, as can be seen from the figure, the guiding liquid injection pipe 11 of pressure cushion 2 is surveyed read apparatus by high-pressure rubber pipe 3 with linker 9 and the pressure of being made up of pressure meter 6 and digital display meter 7 and is connected, on pressure survey read apparatus, be provided with by-pass valve control 8, be connected with oil pump 5a by by-pass valve control 8.
In embodiment shown in Figure 3 two, structure is basic identical with embodiment one, and different is mainly is to substitute oil pump 5a with fluid injection gun 5b, is not described in detail at this.
Pressure meter 6 among the embodiment and digital display meter 7 can be singly with also being used in combination.Also can adopt the digital display manometer that has regularly the stored record function to substitute.
Hard guiding liquid injection pipe 1 among the embodiment adopts the nylon rod material to make.
Claims (8)
1. a flexible mine compressive stress monitoring pressure pillow is characterized in that it comprises a flexible shell, the sealing of flexible shell one end, the other end is provided with socket, and by the guiding liquid injection pipe of a hard of socket insertion, the socket of guiding liquid injection pipe and housing will be realized pressure-resistant seal.
2. flexible mine as claimed in claim 1 compressive stress monitoring pressure pillow is characterized in that, described flexible shell carrying compressive stress is greater than 15Mpa.
3. flexible mine as claimed in claim 1 or 2 compressive stress monitoring pressure pillow is characterized in that, described flexible shell adopts nitrile rubber class material to make.
4. flexible mine as claimed in claim 1 or 2 compressive stress monitoring pressure pillow is characterized in that, described hard guiding liquid injection pipe adopts nylon rod to make.
5. flexible mine compressive stress monitoring device, it comprises pressure cushion and pressure survey read apparatus, it is characterized in that, described pressure cushion structure is: comprise a flexible shell, the sealing of flexible shell one end, the other end is provided with socket, and by the guiding liquid injection pipe of a hard of socket insertion, the socket of guiding liquid injection pipe and housing is realized pressure-resistant seal; On pressure survey read apparatus, be provided with the fluid injection by-pass valve control.
6. monitoring device as claimed in claim 5 is characterized in that, it is pressure meter and/or digital display meter that described pressure is surveyed read apparatus.
7. monitoring device as claimed in claim 5 is characterized in that, it is to have the regularly digital display manometer of stored record function that described pressure is surveyed read apparatus.
8. the monitoring method of a flexible mine as claimed in claim 5 compressive stress monitoring device is characterized in that step is as follows:
The first step: pressure cushion is put into the boring of coal petrography wall, by-pass valve control is connected with priming device, utilizes priming device to fill withstand voltage oil or emulsion by the guiding liquid injection pipe to pressure cushion inside, getting up until the pressure cushion blow-up closely contacts with the boring inwall, valve-off takes off priming device then;
Second step: survey read apparatus by pressure and read an initial value, when the boring compressive deformation, pressure is surveyed on the read apparatus a new reading will occur, front and back pressure reduction is instant force value, every then interval certain hour reading and recording one secondary data, draw the coal rock layer pressure history, analyze the coal rock layer pressure changing according to pressure history.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110036482.2A CN102242630B (en) | 2011-01-30 | 2011-01-30 | Flexible mine compression monitoring device and its monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110036482.2A CN102242630B (en) | 2011-01-30 | 2011-01-30 | Flexible mine compression monitoring device and its monitoring method |
Publications (2)
| Publication Number | Publication Date |
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| CN102242630A true CN102242630A (en) | 2011-11-16 |
| CN102242630B CN102242630B (en) | 2017-05-31 |
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| CN201110036482.2A Expired - Fee Related CN102242630B (en) | 2011-01-30 | 2011-01-30 | Flexible mine compression monitoring device and its monitoring method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291288A (en) * | 2013-05-27 | 2013-09-11 | 江苏三恒科技股份有限公司 | Mining wireless drilling stress sensor |
| CN103674347A (en) * | 2013-12-10 | 2014-03-26 | 太原理工大学 | Hollow flexible inductor borehole stress sensor and detection method thereof |
| CN104502002A (en) * | 2014-12-29 | 2015-04-08 | 山东华硕能源科技有限公司 | Hydraulic force transfer type borehole stressmeter and operation method thereof |
| CN105003250A (en) * | 2015-08-14 | 2015-10-28 | 天地科技股份有限公司 | Device and method for monitoring pressure-relief borehole deformation of coal and rock strata |
| CN106014402A (en) * | 2016-07-25 | 2016-10-12 | 西南石油大学 | Packing medium measuring instrument for well wall deformation detection |
| CN106289943A (en) * | 2016-07-25 | 2017-01-04 | 西南石油大学 | Drilling well disturbance go into the well week surrouding rock stress monitor experimental system in real time |
| CN107402085A (en) * | 2017-09-11 | 2017-11-28 | 山东科大中天安控科技有限公司 | A kind of flexible fluid injection probe unit and detection method |
| CN109612629A (en) * | 2019-01-28 | 2019-04-12 | 贵州大学 | A kind of extension assembling mine pressure detection device convenient for adjusting height |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291288A (en) * | 2013-05-27 | 2013-09-11 | 江苏三恒科技股份有限公司 | Mining wireless drilling stress sensor |
| CN103674347A (en) * | 2013-12-10 | 2014-03-26 | 太原理工大学 | Hollow flexible inductor borehole stress sensor and detection method thereof |
| CN103674347B (en) * | 2013-12-10 | 2016-01-20 | 太原理工大学 | A kind of hollow soft elasticity inductor drilling hole stress sensor and detection method |
| CN104502002A (en) * | 2014-12-29 | 2015-04-08 | 山东华硕能源科技有限公司 | Hydraulic force transfer type borehole stressmeter and operation method thereof |
| CN105003250A (en) * | 2015-08-14 | 2015-10-28 | 天地科技股份有限公司 | Device and method for monitoring pressure-relief borehole deformation of coal and rock strata |
| CN106014402A (en) * | 2016-07-25 | 2016-10-12 | 西南石油大学 | Packing medium measuring instrument for well wall deformation detection |
| CN106289943A (en) * | 2016-07-25 | 2017-01-04 | 西南石油大学 | Drilling well disturbance go into the well week surrouding rock stress monitor experimental system in real time |
| CN106289943B (en) * | 2016-07-25 | 2019-09-03 | 西南石油大学 | Drilling well disturbs all surrouding rock stress real-time monitoring experimental systems of going into the well |
| CN106014402B (en) * | 2016-07-25 | 2019-12-17 | 西南石油大学 | Filling medium measuring instrument for borehole wall deformation detection |
| CN107402085A (en) * | 2017-09-11 | 2017-11-28 | 山东科大中天安控科技有限公司 | A kind of flexible fluid injection probe unit and detection method |
| CN109612629A (en) * | 2019-01-28 | 2019-04-12 | 贵州大学 | A kind of extension assembling mine pressure detection device convenient for adjusting height |
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| CN102242630B (en) | 2017-05-31 |
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