CN204256186U - The monitoring prediction device of coal-face top, Water Inrush disaster - Google Patents
The monitoring prediction device of coal-face top, Water Inrush disaster Download PDFInfo
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- CN204256186U CN204256186U CN201420786793.XU CN201420786793U CN204256186U CN 204256186 U CN204256186 U CN 204256186U CN 201420786793 U CN201420786793 U CN 201420786793U CN 204256186 U CN204256186 U CN 204256186U
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Abstract
The utility model discloses the monitoring prediction device of a kind of coal-face top, Water Inrush disaster, this device comprises several electrodes be arranged in the boring of directed concordant and two remote electrodes be arranged in tunnel, described directed concordant boring arranges several, and each directed concordant boring is from face roof or base plate, or the top board of local danger section or base plate to extend to underground at least two-layer; The processor that several electrodes described are all arranged by communication cable and ground with two remote electrodes is connected.The utility model can realize Real-Time Monitoring and to hole the change of electrical feature peripherally.
Description
Technical field
The utility model belongs to technical field of geophysical exploration, is specifically related to the monitoring prediction device of a kind of coal-face top, Water Inrush disaster.
Background technology
Coal resources are one of China's main energy sources, along with the renewal of winning apparatus, the increase of yield, the mining depth of mine increases gradually, high artesian from top, coal seam, floor water-bearing rock threatens and also increasingly sharpens, and is a kind of potential danger to the safety coal extraction of workplace and miner's life security.
Roof water comprises the water in superjacent Water in mined area and water-bearing zone, top Water in mined area can judge according to related data, and unrestrained in advance, and in water-bearing strata, the tax of water is deposited and strong and weak with formation lithology with the growth in hole, crack etc., and supply source etc. is because have substantial connection.Remote roof water, because it is distant, coordinate detection and unrestrained all very difficult, but the initial fissure increased by roof caving in exploitation process and new crack import coal-face; Floor water mostly is high artesian, in working face mining process, once floor strata does not keep out the hydraulic pressure of floor water-bearing rock, it is outstanding that piestic water then knows from experience generation, particularly at the North China type coalfield in main quarrying charcoal Permian period coal seam, below seat earth, tens meters of are the huge ordovician limestone water-bearing zone of water cut, and water inrush accident is once occur, destructive large, often cause casualties and property loss.In addition, water damage accident also has and rescues that large, the economic loss of difficulty is large, the mine recovery cycle is long, the features such as potential safety hazard is many between convalescence.
More to the research of Water Inrush mechanism both at home and abroad, water bursting coefficient method, " Down Three Zone " as in succession proposed are theoretical, original position is opened and split and Zero Position Failure theory, sheet model vital edge etc.These theories have important directive significance to understanding and evaluation gushing water problem, but also there is corresponding defect, as: water bursting coefficient method the parameter that utilizes be impermeable layer thickness and hydraulic pressure value, parameter is on the low side, and just utilize the information of partial points, thus predict the outcome and actual conditions there is bigger difference; The existence of " Down Three Zone " theoretical qualitative analysis three band, but concrete division of this three band and transforming relationship are not quantitatively mentioned, and therefore it theoretically can only to exist as one; Original position is opened to split and is proposed from mining angle with Zero Position Failure theory, think ore deposit pressure, hydraulic pressure cooperates with workplace and can be divided into three sections to the coverage in coal seam, i.e. advanced pressure compression section, release expansion arc and adopt rear pressure and compress---stable section; Sheet model vital edge proposes floor strata by the concept of adopting water flowing fractured zone and base plate water proof band and forming, adopt the elastic solution by even vertical load on semi-infinite body certain length, try to achieve the maximal destruction degree of depth of base plate mining influence in conjunction with Griffith strength theory and Coulomb-Mohr strength theory respectively.In a word, these theories have significant limitation, are difficult to promotion and application in practice.
At gushing water warning aspect, Dong Shuning, Wang Jingming etc. (1998) have developed the real-time monitoring system of coal seam bottom water bursting monitoring and prediction, and its main monitoring equipment is stress, strain, hydraulic pressure, temperature sensor, based on monitoring station and the ground computer of 8098 single-chip microcomputers.By the change of monitoring hydraulic pressure, water temperature, as the foundation of prediction, its prerequisite is that water must flow through sensing station; Institutes Of Technology Of Taiyuan has applied for the utility model patent of " the monitoring and prediction method that Ordovician karst water is outstanding " by name in 2003, its implementation method is the water-bearing zone utilized under seat earth, as monitor layer, drilling is to this layer, running casing, install level sensor, tensimeter and data acquisition system (DAS) in aperture, the change of monitoring water level, obtains water level distribution plan and gushing water forecast result.This utility model still needs borehole drilling to proceed to water level to put, or gushing water must flow through this boring, otherwise monitors failure, Cheng Jiulong has applied for the utility model patent of " mine water-bursting predicting system based on information fusion " by name in 2006, because termination without Payment lost efficacy, Huabei Tech College Yin Shang has applied for the utility model patent of " mine water bursting disaster monitoring and early-warning system and control method thereof " by name prior to 2009, its implementation method at seat earth, water damage accident place easily occurs to construct two and hole, bury cooling-water temperature sensor, hydraulic pressure sensor, strain gauge, strain transducer, displacement transducer composition in site measurement subsystem respectively underground, and modes of warning preset for data importing, show, if there is dangerous situation will send alert with various ways such as image, sound, mobile communication with the form of graph curve and numeral, Liu Sheng east in 2009, Wang Bo etc. have done " the mine water disaster early warning experimental study based on earth electric field response in seepage action of ground water ", by setting up Shen Liu – electrical measurement model, electric pulse field parameter test is gathered in flow event, with current potential, electric current time line and apparent resistivity isochronous surface are characterized as foundation, find that in flow event, natural electric field all shows as ascendant trend in time-space domain, spontaneous potential isochronal extreme point instruction seepage flow position, and there is advanced sensing capability, in actual application, potential electrode is arranged in tunnel, the water outlet of stoping period workplace internal lag then cannot realize monitoring, in addition, when water outlet hydraulic pressure is larger, water flow velocity is bigger than normal, the time of early warning reduces greatly, even have little time early warning.
Water bursting disaster sexual behavior therefore be the road blocking tiger of building security, highly efficient and productive mine, although many scholars have carried out unremitting effort in this respect, and for different situations, propose various prophylactico-therapeutic measures and water-bursting predicting prediction theory, with regard to its theory itself, relatively perfect, but its using value is restricted, especially miscellaneous parameter, possibly cannot obtain or be difficult in engineering to reflect actual conditions, this brings difficulty to rig-site utilization, and what have cannot use even at all.
For any water bursting disaster sexual behavior thus generation have a process, different phase wherein all can present different change informations, monitors these information timely and effectively, for realize coal-face top, Water Inrush monitoring and prediction most important.Successful monitoring and forecast, can set apart for drainage works and personnel withdraw, reduce or avoid casualties and economic loss completely.Therefore, research and develop a kind of method of coal-face top, Water Inrush disaster being carried out to monitoring and prediction of effective practicality, have important practical significance and economic worth.
Utility model content
For solving the technical matters of existing existence, the utility model embodiment provides the monitoring prediction device of a kind of coal-face top, Water Inrush disaster.
For achieving the above object, the technical scheme of the utility model embodiment is achieved in that
The utility model embodiment provides the monitoring prediction device of a kind of coal-face top, Water Inrush disaster, this device comprises several electrodes be arranged in the boring of directed concordant and two remote electrodes be arranged in tunnel, described directed concordant boring arranges several, and each directed concordant boring is from face roof or base plate, or the top board of local danger section or base plate to extend to underground at least two-layer; The processor that several electrodes described are all arranged by communication cable and ground with two remote electrodes is connected.
In such scheme, described two remote electrodes are arranged along perpendicular to directed concordant boring direction, the directed concordant drilling depth that distance is greater than 5 times.
In such scheme, described two remote electrodes are arranged along large lane, the directed concordant drilling depth being greater than 5 times with nearest potential electrode distance.
Compared with prior art, the beneficial effects of the utility model:
The utility model can identify whether as workplace top or Water Inrush, for base plate, in working face extraction process, when monitoring lower electrode potential change early than upper strata, then for Floor water has the danger projected upwards, on the contrary then for base plate produces crack or tunnel internal water accumulation flows into caused by crack.
Accompanying drawing explanation
Fig. 1 is device schematic diagram of the present utility model;
Fig. 2 is the utility model applied environment schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The utility model embodiment also provides the monitoring prediction device of a kind of coal-face top, Water Inrush disaster, as shown in Figure 1, this device comprises several electrodes 10 be arranged in the boring of directed concordant and two remote electrodes be arranged in tunnel, described directed concordant boring 8 arranges several, and each directed concordant boring 8 is from face roof or base plate, or the top board of local danger section or base plate to extend to underground at least two-layer; The processor that several electrodes described are all arranged by communication cable and ground with two remote electrodes is connected.
Described electrode 10 is connected by cable 12, is drawn by aperture, is directly connected with supplying measure equipment 13.
In workplace 1, base plate stratum 2, directed concordant boring 8 is played in described tunnel 4.
Described two remote electrodes are arranged along perpendicular to directed concordant boring direction, and distance is greater than the degree of depth of the directed concordant boring 8 of 5 times; Huo Yan great lane is arranged, the directed concordant being greater than 5 times with nearest potential electrode distance hole 8 the degree of depth.
The course of work of the present utility model: arrange electrode in boring, as one of them power supply and potential electrode, two remote electrodes are arranged in tunnel, as auxiliary power supply and potential electrode, form supplying measure system, described transmitting electrode feeds direct current and sets up artificial electric field to stratum, according to current field Distribution Principle, it is all point source when each transmitting electrode is powered respectively, its equipotential plane take transmitting electrode as the sphere of the centre of sphere, the feature of this sphere is the current potential identical (being referred to as equipotential surface) of any point on same sphere, remaining electrode in being holed by same layer measures current potential simultaneously, then transmitting electrode is changed, the work of duplicate measurements current potential, to each electrode all completes power supply, complete and once monitor measurement, when workplace does not start back production, the current potential obtained is as background value, in working face extraction process, reservoir stress changes, produce crack, become the migration pathway of water, the equipotential surface distribution of point source field will be changed, by monitoring this change, obtain boring mine water inrush information around.
By the utility model overcome in the past each theory and Forecasting Methodology is unilateral, locally, the miscellaneous drawback of parameter, utilize the feature of resistivity prospecting bulk effect, by arrangement of electrodes in the borehole, form stereoscopic monitoring net, realize Real-Time Monitoring and to hole the change of electrical feature peripherally.
By the utility model by arrangement of electrodes in the borehole, avoid working environment complicated in tunnel, improve the degree of reliability of Monitoring Data.
By multi-layered electrode combination monitoring, can identify whether as top, floor water-bearing rock water source gushing water, accurate positioning.
As in Fig. 2, there is place's low-resistance water content 7 in inside, water-bearing zone 3, described base plate bottom, for the dynamic change situation of monitoring water content 7 in workplace mining active process, directed concordant boring 8 and 9 need be played in workplace 1 base plate stratum 2 in tunnel 4 and 5, drilling depth can be determined according to face width, and the spacing of same tunnel internal drilling is H
1.
According to embodiment, detailed description is made to the utility model above, but, described description is exemplary, the utility model is not limited only in embodiment, those skilled in the art can make various forms of replacement or change according to the utility model instruction to it completely, under the prerequisite not departing from the utility model aim and spirit, every various change of making the utility model and modify the content being all considered as the utility model and containing, within the scope all falling into claims.
Claims (3)
1. the monitoring prediction device of a coal-face top, Water Inrush disaster, it is characterized in that, this device comprises several electrodes be arranged in the boring of directed concordant and two remote electrodes be arranged in tunnel, described directed concordant boring arranges several, and each directed concordant boring is from face roof or base plate, or the top board of local danger section or base plate to extend to underground at least two-layer; The processor that several electrodes described are all arranged by communication cable and ground with two remote electrodes is connected.
2. the monitoring prediction device of coal-face top according to claim 1, Water Inrush disaster, is characterized in that: described two remote electrodes are arranged along perpendicular to directed concordant boring direction, the directed concordant drilling depth that distance is greater than 5 times.
3. the monitoring prediction device of coal-face top according to claim 1, Water Inrush disaster, is characterized in that: described two remote electrodes are arranged along large lane, the directed concordant drilling depth being greater than 5 times with nearest potential electrode distance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420786793.XU CN204256186U (en) | 2014-12-15 | 2014-12-15 | The monitoring prediction device of coal-face top, Water Inrush disaster |
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| CN201420786793.XU CN204256186U (en) | 2014-12-15 | 2014-12-15 | The monitoring prediction device of coal-face top, Water Inrush disaster |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459808A (en) * | 2014-12-15 | 2015-03-25 | 中煤科工集团西安研究院有限公司 | Monitoring and forecasting method and device for water bursting hazards on roof and floor of coal working face |
| CN104989453A (en) * | 2015-06-19 | 2015-10-21 | 河北煤炭科学研究院 | Coal mine water burst down-hole full-space real-time continuous monitoring early-warning method |
| CN106246162A (en) * | 2016-09-21 | 2016-12-21 | 山东科技大学 | Floor undulation is across borescopic imaging device and slip casting effect monitoring method |
| CN113027521A (en) * | 2021-02-03 | 2021-06-25 | 淮北矿业股份有限公司 | Method for evaluating whole-area dredging effect after closure of curtain |
| CN113550791A (en) * | 2021-07-15 | 2021-10-26 | 陕西麟北煤业开发有限责任公司 | Coal seam roof separation water detection method for coal mine control management |
-
2014
- 2014-12-15 CN CN201420786793.XU patent/CN204256186U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459808A (en) * | 2014-12-15 | 2015-03-25 | 中煤科工集团西安研究院有限公司 | Monitoring and forecasting method and device for water bursting hazards on roof and floor of coal working face |
| CN104989453A (en) * | 2015-06-19 | 2015-10-21 | 河北煤炭科学研究院 | Coal mine water burst down-hole full-space real-time continuous monitoring early-warning method |
| CN106246162A (en) * | 2016-09-21 | 2016-12-21 | 山东科技大学 | Floor undulation is across borescopic imaging device and slip casting effect monitoring method |
| CN106246162B (en) * | 2016-09-21 | 2019-03-22 | 山东科技大学 | Across the borescopic imaging device of floor undulation and slip casting effect monitoring method |
| CN113027521A (en) * | 2021-02-03 | 2021-06-25 | 淮北矿业股份有限公司 | Method for evaluating whole-area dredging effect after closure of curtain |
| CN113027521B (en) * | 2021-02-03 | 2023-12-22 | 淮北矿业股份有限公司 | Method for evaluating full-area thinning effect after curtain interception |
| CN113550791A (en) * | 2021-07-15 | 2021-10-26 | 陕西麟北煤业开发有限责任公司 | Coal seam roof separation water detection method for coal mine control management |
| CN113550791B (en) * | 2021-07-15 | 2024-02-09 | 陕西麟北煤业开发有限责任公司 | Coal seam roof separation water detection method for coal mine control management |
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