CN1472422A - Method for monitoring and predictnig mine water - Google Patents

Method for monitoring and predictnig mine water Download PDF

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Publication number
CN1472422A
CN1472422A CNA031783333A CN03178333A CN1472422A CN 1472422 A CN1472422 A CN 1472422A CN A031783333 A CNA031783333 A CN A031783333A CN 03178333 A CN03178333 A CN 03178333A CN 1472422 A CN1472422 A CN 1472422A
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China
Prior art keywords
monitoring
water
aquifer
monitor layer
prediction
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Pending
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CNA031783333A
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Chinese (zh)
Inventor
赵阳升
胡耀青
杨栋
段康廉
梁卫国
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Taiyuan University of Technology
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Taiyuan University of Technology
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Priority to CNA031783333A priority Critical patent/CN1472422A/en
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Abstract

A method for monitoring and forecasting the sudden flooding in mine includes such steps as searching a small water-bearing layer in the coal bed of Permo-Carboniferous period stratum for using it as monitor layer, locating the water level monitoring holes to form a monitor network, drilling each hole to said monitor layer, arranging the sleeve tube in each hole, installing water level sensors, pressure meters and data acquisition system, electrically connecting them to computer on the ground, and calculating and analyzing to obtain forecast information.

Description

The monitoring and prediction method that Ordovician karst water is outstanding
Technical field:
The invention belongs to the coal mine flood category, specifically, relate to a kind of method of preventing and treating limestone aquifer gushing water difficult to understand.
Background technology:
Rich coal resources in China, it is the pith that the energy is formed, yet China's limestone karst is widely distributed, exhaustion along with the superficial part coal seam, the increase of mining rate, the degree of depth of mine is constantly extended, and aggravates day by day from the harm of bottom ordovician limestone artesian water (abbreviation Ordovician karst water), and the water bursting in mine accident happens occasionally.Ordovician karst water is outstanding to be meant in the mining process of colliery, fissure zone, structural belt (tomography, no charcoal post) that the ordovician limestone karst artesian water below seat earth of hiding is pulled at the bottom of the coal seam pour in acceptance region suddenly, flood work plane, exploiting field, even whole mine, cause the great economic loss and the major natural disasters of casualties.Therefore, research has become the problem that the mining industry worker pays close attention to the gushing water of limestone aquifer difficult to understand, and wherein the research of gushing water monitoring and prediction is the key of control water bursting in mine.
At present, to the outstanding monitoring and prediction method of Ordovician karst water, mainly contain both at home and abroad:
1,,, the prediction mine water inrush is proposed at the hydrological environment and the condition in digging space with pattern-recongnition method and Intelligent Recognition method.Be to utilize the multiple hydrogeologic data in the colliery of having exploited in a large number to constitute the pattern classification standard, whether its gushing water differentiated with computer.
2, with probability index method prediction base plate gushing water, it is the method with weighting, the various factors role in the base plate gushing water that influences the base plate gushing water is carried out quantification, try to achieve overall quantizating index by Mathematical Modeling and be probabilistic standard, its size can be used as gushing water whether standard.
3, utilize the GIS technology, on the basis of a minute folding mining area engineering geology, hydrogeology, gushing water data, foundation can reflect the gushing water pattern of multifactor comprehensive function, and by calculating, analyzing, acquired information is represented the mine water-bursting predicting result with the graphics table form.
4, utilize expert system to set up the Prediction of Water Jetting from Coal Bottom model, by expert's knowledge, reasoning, the possibility of seeking the base plate gushing water.
5, utilize ess-strain and hydraulic pressure sensor and computer, water inrush precursor is changed into geological information, analyze regimen and change, realize the base plate gushing water is carried out the dynamic real-time forecast.
Outstanding prediction, the forecast of Ordovician karst water is the outstanding topmost means of control Ordovician karst water, from engineering viewpoint, a suitable difficult to understand grey gushing water monitoring technology must possess two conditions, the one, spatially possess regionality, promptly use a spot of several observation point, just can accurately monitor the dynamic change of interior Ordovician karst water in a big way.The 2nd, on the time of forecast, possess real-time, promptly can shift to an earlier date several days, minimum several hrs is in advance made forecast to gushing water.Have only and satisfy above two, just having takes precautions against natural calamities keeps away the possibility of calamity, and its practicality is just arranged.Above-mentioned prediction system of both at home and abroad Ordovician karst water being given prominence to all can not satisfy above-mentioned requirements, thereby seldom obtains using in production practices, causes the water bursting in mine accident frequently to take place, and does not have the outstanding technical scheme of comparatively ideal control Ordovician karst water.
Summary of the invention:
The objective of the invention is to overcome the shortcoming of prior art, the new method of the outstanding monitoring and prediction of a kind of Ordovician karst water is provided, the dynamic change of Ordovician karst water in this method can not only be monitored in a big way exactly, and can carry a few days ago, the minimum several hrs that shifts to an earlier date, accurate forecast is made in the gushing water place, realized spatially possessing regionality, possessing the gushing water monitoring and prediction of real-time in time, thereby scientificlly and effectively prevent mine water bursting disaster.
For achieving the above object, the present invention takes the method for the outstanding monitoring and prediction of a kind of Ordovician karst water, and its forecast principle is as follows:
Existing discovering, in the seat earth on the ordovician limestone aquifer of coal Permian period coal measure strata, several little aquifers of ubiquity, this aquifer is evenly distributed, scope is wide, is water system independently separately in the ordinary course of things.Have only primary permeable structure or adopt the secondary structure that causes of activation each aquifer is communicated with, when forming infiltration lane, just hydraulic connection can take place, and then cause the gushing water accident.Discovery based on above-mentioned geological phenomenon, because when Ordovician karst water is outstanding, at first to flow into its overlying aquifer through infiltration lane, if certain one deck of overlying aquifer or which floor permeability are better, the response speed of hydraulic pressure is very fast, also be that the variation of this aquifer water level can reflect it and the degree that is communicated with of Ordovician karst water well, this aquifer just can be used as monitor layer so, promptly in this aquifer, arrange monitoring net according to field condition, come inverting gushing water zone by the amplitude of variation of each point hydraulic pressure in the monitoring net, and then the position of calculating projective water point, make the gushing water forecast as early as possible.
The monitoring and prediction method that a kind of Ordovician karst water is outstanding, its step is as follows:
(1) in the seat earth on the ordovician limestone aquifer of coal Permian period coal measure strata, finds out at least one little aquifer as monitor layer;
(2) in monitor layer, lay the water level monitoring hole, form monitoring net;
(3) determine the position of monitoring holes after, hole to monitor layer, setting of casing is installed level sensor, pressure meter and data collecting system at aperture place, is connected with ground-based computer by cable;
(4) according to data collecting system to each monitoring holes SEA LEVEL VARIATIONS DURING data, utilization gushing water monitoring and prediction software carries out computational analysis, then can obtain the distribution map and the gushing water forecast result of monitored area water level.
Described monitor layer is to exist at a region memory, and the little aquifer that thickness is little has good penetration ability and stable hydraulic parameter.
Monitoring holes in the described monitoring net is evenly arranged, the reasonable distance of monitoring holes: Lc=hT m/ T fIn the formula: Lc is the maximum spacing of monitoring holes, T mBe the coefficient of transmissibility of monitor layer, T f. be the coefficient of transmissibility of permeable structure, h is the distance of monitor layer to seat earth.
Described gushing water monitoring and prediction software is according to aquifer permeation fluid mechanics governing equation, with monitoring holes measured water level in each monitor layer of each observation acquisition constantly, as object function, adopt Finite Element Method discrete to aquifer permeation fluid mechanics governing equation, and in conjunction with the back analysis of aquifer water level, the computer software of establishment.
The present invention is because the aquifer of utilization on the ordovician limestone aquifer of coal Permian period coal measure strata, under the seat earth, as the outstanding monitor layer of Ordovician karst water, when Ordovician karst water because of primary structure or artificial origin, during with monitor layer generation hydraulic connection, because Incoercibility, continuity, the sensitiveness of fluid, the water level in the monitoring holes will be rapidly along with the reinforcement generation dynamic change of hydraulic connection.According to the SEA LEVEL VARIATION in each monitoring holes, with the comparative analysis of Ordovician karst water position, just can accurate rapidly outstanding place and the time of real-time prediction Ordovician karst water.In time take the measure of taking precautions against natural calamities or keep away the calamity measure, just can prevent the loss of personnel and property.The present invention has overcome the blindness that prior art exists on the water bursting in mine monitoring and prediction is implemented, taked a kind ofly spatially to possess regionality, possess the gushing water monitoring and prediction new technology of real-time in time, it has deep theory and is worth and wide practical value.
Below will be by embodiment and the present invention is further illustrated in conjunction with the accompanying drawings.
Description of drawings:
Fig. 1 is many aquifers of base plate waterpower contact schematic diagram that permeable structure (tomography) forms;
Fig. 2 is that water guide does not have many aquifers of base plate waterpower contact schematic diagram that the charcoal post forms;
Fig. 3 is that many aquifers of base plate waterpower contact schematic diagram that high-band and fracture area formation are sought in the crack is adopted in the coal seam;
Fig. 4 is a monitoring holes reasonable Arrangement schematic diagram;
Fig. 5 is the monitoring system schematic diagram.
The specific embodiment:
In order to further specify technical scheme of the present invention, 1,2,3 be described in detail the outstanding regionality forecast principle of Ordovician karst water at first in conjunction with the accompanying drawings.According to the outstanding preparation process of Ordovician karst water, divide following three kinds of situations to be narrated.
1, the situation when structure (tomography) band, the primary water guide of no charcoal post: (referring to Fig. 1,2)
1 expression coal seam among the figure, 2 expression structural belts, 3 expressions are near the little aquifer in coal seam, and 4 represent the little aquifer near the Ordovician karst water layer, 5 expression Ordovician karst water layers, 6 expression monitoring holes, the no charcoal post of 7 expressions.
In fact little aquifer 3 and little aquifer 4 are by primary permeable structure band 2 or do not have charcoal post 7, all the time with Austria's grey karst aquifer 5 communications.It is exchanged information and depends on the transmissibility of primary permeable structure.If transmissibility is fine, then little aquifer 3 has almost become a water system with little aquifer 4 with grey karst difficult to understand aquifer 5, and its static head is very nearly the same.In this case, the threat maximum of the 3 pairs of colliery diggings in little aquifer in the most close coal seam 1 just can not only be considered the outstanding of Ordovician karst water according to routine, and emphasis is considered aquifer 3.Relatively poor when primary permeable structure transmissibility, it is the peak level distribution of supply point with the permeable structure that little aquifer 3 and little aquifer 4 have just formed.Under the both of these case, as long as in little aquifer 3 and little aquifer 4, arrange suitable water level monitoring hole 6, the water level of each monitoring holes of Real Time Observation and variation thereof, each monitoring holes actual measurement head is imported the seepage flow governing equation in little aquifer 3 and little aquifer 4, pass through back analysis, can determine the waterpower regularity of distribution in little aquifer 3 and little aquifer 4, find the hydraulic connection point in many aquifers, i.e. the definite position of permeable structure.And can grasp the moisturizing feature of permeable structure, and then the governing equation by permeable structure is finally inversed by the percolation law and the water transmitting ability of water in the permeable structure.By staying set up defences water coal column or other measures of taking precautions against natural calamities in the permeable structure zone corresponding in the coal seam, can not cause Ordovician karst water outstanding thereby guarantee to construct.
2, structure (tomography) band, the primary not water guide of no charcoal post, the situation of water guide owing to adopt activation: (referring to Fig. 1,2)
At first tectonic activization is a gradual process, in general Ordovician karst water is upwards gushed out along the permeable structure of activation, because little aquifer 3,4 storage capacity is strong, transmissibility is good, Ordovician karst water at first enters the little aquifer 4 near limestone aquifer 5 difficult to understand, formation is the nourishment source with the permeable structure, when the hydraulic gradient in the aquifer 4 is high enough to overcome the permeable structure resistance, Ordovician karst water 5 is simultaneously also to 3 supplies of little aquifer, when the hydraulic gradient in the aquifer 3 is high enough to overcome the permeable structure resistance, if the coal seam is exploited, then Ordovician karst water oozes out to the digging space gradually, and the process of oozing out of water is constantly washed away the filler of structural belt 2, and causes unstability to produce the activation of big system, and then flood the digging space, even mine.If not digging of coal seam, or permeable structure protected by barrier pillar, then the gushing water accident can not take place.
3, adopt and the situation of Ordovician karst water compound action: (referring to accompanying drawing 3)
In fact the crack water guide band of Chan Shenging is made up of two parts, and first is base plate fracture area 8, the crack district 9 that produces because of adopting, and existing more research can be calculated.Another part is that Ordovician karst water 5 seepage flow make the crack lead the high-band rising, and base plate fracture area 8, crack district 9 that exploitation is caused lead high-band with the crack that Ordovician karst water 5 causes and be communicated with, and then form new crack gushing water passage.The generation of this passage is quite slowly, at first will experience Ordovician karst water by slow supply aquifer, crack 4, and then supply aquifer 3, gushes out along passage at last, forms the gushing water accident.
Take a hint from said process, if in the aquifer on limestone difficult to understand, lay some borings, and monitor drilling water level in real time and change, just can predict the definite position of gushing water incident and possibility gushing water thereof in advance, thereby we can be tackled calmly, above the gushing water passage, stay the barrier pillar of establishing big safety, even some work plane can not exploited.In addition, because sensitiveness and regionality that the aquifer water level changes can make us by less monitoring boring, real-time forecast gushing water and particular location thereof, thus realize gushing water forecast new technology regional and real-time.
According to the outstanding forecast principle of above-mentioned Ordovician karst water, below provide a specific embodiments.
Shown in Fig. 4,5, the monitoring and prediction method that a kind of Ordovician karst water is outstanding the steps include:
(1) in coal seam 1 base plate on the ordovician limestone aquifer 5 of coal Permian period coal measure strata, finds out little aquifer 3, little aquifer 4, as monitor layer;
(2) in monitor layer, lay water level monitoring hole 6, form monitoring net;
(3) determine the position of monitoring holes after, hole to monitor layer, setting of casing 10 is installed level sensor 11, pressure meter 12 and data collecting system 13 at aperture place, is connected with down-hole or ground-based computer 14 by cable;
(4) according to data collecting system 13 to each monitoring holes 6 SEA LEVEL VARIATIONS DURING data, utilization gushing water monitoring and prediction software carries out computational analysis, then can obtain the distribution map and the gushing water forecast result of monitored area water level.
Described monitor layer, be at a region memory in the little little aquifer of thickness, have good penetration ability and stable hydraulic parameter.
Monitoring holes 6 in the described monitoring net evenly arranges, the reasonable distance of monitoring holes by formula: Lc=hT m/ T fCalculate, in the formula: Lc is the maximum spacing of monitoring holes, T mBe the coefficient of transmissibility of monitor layer, T f. be the coefficient of transmissibility of permeable structure, h is the distance of monitor layer to seat earth.

Claims (3)

1, the outstanding monitoring and prediction method of a kind of Ordovician karst water is characterized in that described step is:
(1) in coal seam (1) base plate on the ordovician limestone aquifer (5) of coal Permian period coal measure strata, finds out at least one little aquifer as monitor layer;
(2) in monitor layer, lay water level monitoring hole (6), form monitoring net;
(3) determine the position of monitoring holes after, hole to monitor layer, setting of casing (10) is installed level sensor (11), pressure meter (12) and data collecting system (13) at aperture place, is connected with down-hole or ground-based computer (14) by cable;
(4) according to data collecting system to each monitoring holes SEA LEVEL VARIATIONS DURING data, utilization gushing water monitoring and prediction software carries out computational analysis, then can obtain the distribution map and the gushing water forecast result of monitored area water level.
2, according to the outstanding monitoring and prediction method of the described Ordovician karst water of claim 1, it is characterized in that described monitor layer, be at a region memory in the little little aquifer of thickness, have the good penetration ability, stable hydraulic parameter.
3, according to the outstanding monitoring and prediction method of the described Ordovician karst water of claim 1, it is characterized in that the monitoring holes (6) in the described monitoring net is evenly arranged, the reasonable distance of monitoring holes by formula: Lc=hT m/ T fCalculate, in the formula: Lc is the maximum spacing of monitoring holes, T mBe the coefficient of transmissibility of monitor layer, T f. be the coefficient of transmissibility of permeable structure, h is the distance of monitor layer to seat earth.
CNA031783333A 2003-07-10 2003-07-10 Method for monitoring and predictnig mine water Pending CN1472422A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100560944C (en) * 2007-12-27 2009-11-18 淮北矿业(集团)有限责任公司 Aquifer preventing and controlling method for coal face roof plate separation layer
CN101832151A (en) * 2010-05-25 2010-09-15 煤炭科学研究总院西安研究院 Embedding method of combination transducer for early warning and monitoring of water inrush disaster of mines
CN101894189A (en) * 2010-07-14 2010-11-24 中国矿业大学(北京) New method for evaluating coal seam bottom water bursting
CN101526010B (en) * 2009-03-25 2012-01-11 华北科技学院 Mine water burst disaster monitoring and early-warning system and control method thereof
CN103529488A (en) * 2013-09-30 2014-01-22 武汉长盛煤安科技有限公司 Mine roof and floor water inrush monitoring and prediction system and method
CN104678065A (en) * 2015-03-13 2015-06-03 山西潞安环保能源开发股份有限公司 Online monitoring intelligent early warning system for coal mine water burst
CN105137487A (en) * 2015-09-30 2015-12-09 河北煤炭科学研究院 Underground water flow field description method based on manual water discharging interference field
CN105179014A (en) * 2015-08-24 2015-12-23 兖矿集团有限公司 Coal mine water inrush disaster pre-warning method and device
CN105781619A (en) * 2016-04-01 2016-07-20 太原理工大学 Method for detecting water inrush in hidden primary structure
CN105891903A (en) * 2016-04-01 2016-08-24 太原理工大学 Calculation method of hydraulic connection point of concealed confined aquifer
CN106194262A (en) * 2016-08-03 2016-12-07 太原理工大学 Mine floor Austria limestone gushing water on-line monitoring intelligent early-warning system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100560944C (en) * 2007-12-27 2009-11-18 淮北矿业(集团)有限责任公司 Aquifer preventing and controlling method for coal face roof plate separation layer
CN101526010B (en) * 2009-03-25 2012-01-11 华北科技学院 Mine water burst disaster monitoring and early-warning system and control method thereof
CN101832151A (en) * 2010-05-25 2010-09-15 煤炭科学研究总院西安研究院 Embedding method of combination transducer for early warning and monitoring of water inrush disaster of mines
CN101894189B (en) * 2010-07-14 2011-04-20 中国矿业大学(北京) New method for evaluating coal seam bottom water bursting
CN101894189A (en) * 2010-07-14 2010-11-24 中国矿业大学(北京) New method for evaluating coal seam bottom water bursting
CN103529488A (en) * 2013-09-30 2014-01-22 武汉长盛煤安科技有限公司 Mine roof and floor water inrush monitoring and prediction system and method
CN103529488B (en) * 2013-09-30 2016-05-18 武汉长盛煤安科技有限公司 Mine roof and floor gushing water monitoring and forecasting system and method
CN104678065B (en) * 2015-03-13 2016-05-04 山西潞安环保能源开发股份有限公司 Mine water inrush on-line monitoring intelligent early-warning system
CN104678065A (en) * 2015-03-13 2015-06-03 山西潞安环保能源开发股份有限公司 Online monitoring intelligent early warning system for coal mine water burst
CN105179014A (en) * 2015-08-24 2015-12-23 兖矿集团有限公司 Coal mine water inrush disaster pre-warning method and device
CN105137487A (en) * 2015-09-30 2015-12-09 河北煤炭科学研究院 Underground water flow field description method based on manual water discharging interference field
CN105781619A (en) * 2016-04-01 2016-07-20 太原理工大学 Method for detecting water inrush in hidden primary structure
CN105891903A (en) * 2016-04-01 2016-08-24 太原理工大学 Calculation method of hydraulic connection point of concealed confined aquifer
CN105891903B (en) * 2016-04-01 2018-02-02 太原理工大学 A kind of computational methods of latent artesian aquifer hydraulic connection point
CN106194262A (en) * 2016-08-03 2016-12-07 太原理工大学 Mine floor Austria limestone gushing water on-line monitoring intelligent early-warning system
CN106194262B (en) * 2016-08-03 2018-05-25 太原理工大学 Mine floor Austria limestone gushing water on-line monitoring intelligent early-warning system

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