CN102455176A - Monitoring method of damage height of overlying strata in mining field - Google Patents
Monitoring method of damage height of overlying strata in mining field Download PDFInfo
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- CN102455176A CN102455176A CN2010105130253A CN201010513025A CN102455176A CN 102455176 A CN102455176 A CN 102455176A CN 2010105130253 A CN2010105130253 A CN 2010105130253A CN 201010513025 A CN201010513025 A CN 201010513025A CN 102455176 A CN102455176 A CN 102455176A
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Abstract
The invention discloses a monitoring method of a damage height of overlying strata in a mining field. A microseismic monitoring system is employed to carry out an analysis on a monitored microseismic event so as to determine the damage height of overlying strata. The method comprises: a monitoring region is determined; microseismic probes are arranged in the monitoring region as well as a microseismic monitoring system is used to carry out analysis processing on a monitored microseismic event, so that a position and energy of a seismic focus are obtained; and according to a distribution rule of the microseismic event with certain energy, a fracturing position of a mining field is determined. According to the invention, real-time monitoring can be effectively and regionally carried out on the damage height of overlying strata in a mining field; and high monitoring precision is realized. Compared with current other methods, the monitoring method provided in the invention has the following advantages that: there is no need for carrying out boring construction; the work amount is substantially reduced; and effectiveness and fastness are realized. Moreover, the method enables real-time monitoring to be realized, so that an adverse effect caused by the hysteresis quality can be reduced. Besides, the method also has functions of high monitoring precision and danger early warning.
Description
Technical field
The present invention relates to a kind of monitoring method of stope superincumbent stratum destruction height, main being suitable for and coal mine fully-mechanized mining working, fully mechanized coal face with hard or thicker top board carried out the monitoring of roof destruction height.
Background technology
Cause the deformation failure of stope country rock behind the seam mining and produce the crack, mining-induced fissure then is the root of a series of disasters in colliery.And the destruction height of stope superincumbent stratum not only affects stability of surrounding rock, also later stage exploitation safety is had very big influence.Confirm the superincumbent stratum destruction height that coal mining causes; Not only can guarantee the production safety of coal mining under water-bodies; And for grasping face gas along with the regularity of distribution that overlying strata move, destroy has vital role, in addition for improve pillar extraction, to reduce Coal Loss also significant.
In recent years, along with the increase of mining depth, the increasing of mining rate, the destruction height of stope superincumbent stratum also presents different variation tendencies, also seems particularly urgent for the monitoring of overlying strata destruction height in the recovery process.At present also varied for the main monitoring method of overlying strata destruction height, commonly used mainly contains following two kinds: observation of drilling fluid wastage and the observation of colored borehole television.Drilling fluid wastage observation is from ground or the down-hole to stope top drilling operation, in work progress, in drilling rod, be pressed into washing fluid to boring, in cools reamer head with outside the landwaste exhaust opening.Do not having under the situation of formation damage, the mud that is returned by boring should equate with the flushing liquid measure that steam piano pumps into boring.But, occurring in roof break under the situation in crack, partial flushing liquid runs off along the crack, and the mud that returns in the hole is then less than the flushing liquid measure that pumps into.Based on this kind relation, the zone that the impact liquid measure begins to reduce is the formation damage height.This method mainly is applicable to the rock stratum of the water burst of not holing, and driller's construction volume is bigger, and the scope of monitoring is near institute's construction drill, and is representative to the overlying strata destruction height shortage of whole stope.The borehole television observation procedure mainly is to carry out geotechnical boring from ground to rock stratum, workplace top, and through the boring imaging device system diagram picture of the wall of a borehole is provided directly with the mode of photo or video image.Also have equipment component then to use digital technology and make it to have formation, show and handle the ability of these images; The image that obtains not only can be used to the situation in the qualitative identification boring; Can also analyze the geological phenomenon in the boring quantitatively; Such as width, inclination angle and the occurrence etc. in crack, through the cranny development situation on the hole wall, thereby judging whether the rock stratum ruptures obtains the destruction height of stope overlying strata.Though this method is directly perceived than the former, the drilling construction amount is also bigger, and especially for the ore deposit, deep, and monitoring range is also limited, when confirming mining-induced fissure, also receives the influence of initial fissure and structure in addition.These two kinds of method observation construction times are longer, and also there is certain hysteresis quality in the result of observation for exploitation process.
It is found that in recent years in process of coal mining, always overlying strata have some omens before destroying, the important information that sends when the microseism phenomenon is exactly coal petrography destruction.And through the monitoring microseismic event, and definite source location, can reach the purpose of monitoring roof break.
Summary of the invention
The monitoring method that the purpose of this invention is to provide a kind of stope superincumbent stratum destruction height; Use its installation of this method and operation all extremely convenient, fast; This method can reflect stope roof break situation in real time in addition, and ageing strong, this method is avoided construction; Monitoring equipment only is contained in mining roadway, and is very little to the influence of workplace ordinary production.
To achieve these goals, the present invention adopts following technical scheme:
A kind of monitoring method of stope superincumbent stratum destruction height, its step is following:
The workplace of choosing a normal exploitation is as the monitored area;
Arrange some microseism probes based on the length of working face and the size of this monitored area; Choose Microseismic monitoring system as monitoring equipment; This Microseismic monitoring system is connected with each microseism probe through cable, and said microseism probe is arranged in adhesive tape crossheading, track crossheading and goes up in the go-downhill roadway around said monitored area;
Measure the three-dimensional coordinate xyz of said microseism probe position; The latitude of x representative probe; The longitude of y representative probe, the sea level elevation of z representative probe is input to Microseismic monitoring system with the three-dimensional coordinate xyz that records; Through the mining engineering plan of storing in this Microseismic monitoring system, the position that microseism is popped one's head in marks on this mining engineering plan;
The position calculation that Microseismic monitoring system is popped one's head in according to microseism goes out the three-dimensional coordinate and the energy of microseismic event, on said mining engineering plan, shows then, is used for showing in real time the microseismic event position;
Verify the Microseismic monitoring system locating accuracy through the mode of human-generated explosives, and optimize the arrangement that microseism is popped one's head in,, can regulate the distance between the probe, drop to zone of reasonableness until error if error is excessive according to test findings;
Utilize the coordinate of the microseismic event that the Microseismic monitoring system analysis monitors and the size of energy,, confirm their generation area, can confirm the destruction height of superincumbent stratum through to adding up greater than other microseismic event of certain energy level.
According to the monitoring range of probe, what adjacent microseism was popped one's head in is spaced apart 400 meters to 800 meters.
In the position of arranging the microseism probe model being installed is φ 18, and length is the anchor pole of 3.5m, and the anchor pole afterbody is reserved the thread segment of 3～5cm, and the microseism probe is screwed on the thread segment of anchor pole afterbody clockwise.
Beneficial effect of the present invention: the present invention can carry out effective, zonal real-time monitoring to stope superincumbent stratum destruction height, and has higher monitoring accuracy.With existing data by MoM and MEI, this invention need not carried out drilling construction, has significantly reduced quantities; More effectively quick; And this invention can realize real-time monitoring, reduced the adverse effect that hysteresis quality is brought, and this invention also possesses the function of the high and danger early warning of monitoring accuracy in addition.
Embodiment
A kind of monitoring method of stope superincumbent stratum destruction height, its step is following:
The workplace of choosing a normal exploitation is as the monitored area; Can realize like this destruction height of workplace rear above goaf overlying strata has been monitored.
Arrange some microseism probes according to the length of workplace and the size of this monitored area; Choose Microseismic monitoring system as monitoring equipment; This Microseismic monitoring system is connected with each microseism probe through cable, and said microseism probe is arranged in adhesive tape crossheading, track crossheading and goes up in the go-downhill roadway around said monitored area.
Measure the three-dimensional coordinate xyz of said microseism probe position; The latitude of x representative probe; The longitude of y representative probe, the height above sea level of z representative probe is input to Microseismic monitoring system with the three-dimensional coordinate xyz that records; Through the mining engineering plan of storing in this Microseismic monitoring system, the position that microseism is popped one's head in marks on this mining engineering plan; Three-dimensional coordinate xyz can have survey personnel in ground to measure, and also can calculate based on the distance apart from known point having on the ore deposit figure of coordinate.
The position calculation that Microseismic monitoring system is popped one's head in according to microseism goes out the three-dimensional coordinate and the energy of microseismic event, on said mining engineering plan, shows then, is used for showing in real time the microseismic event position.
Verify the Microseismic monitoring system locating accuracy through the mode of human-generated explosives, and optimize the arrangement that microseism is popped one's head in,, can regulate the distance between the probe, drop to zone of reasonableness until error if error is excessive according to test findings.Spacing error more is more little, but spacing can not surpass the effective range of microseism probe, and generally each probe effective range is at 500～1000m.The blasting parameter that explosion is adopted is: drilling depth 32m, and sealed borehole length 7～10m, aperture 75mm, explosive load is greater than 30kg.The 2# emulsion explosive for coal mine, powder stick specification Ф 50 * 250mm, detonator adopts the common instant electric detonator of allowed for use in coal mines 8#.Primacord fuse adopts the allowed for use in coal mines primacord fuse, and specification is φ 5.2～5.5mm;
Utilize the coordinate of the microseismic event that the Microseismic monitoring system analysis monitors and the size of energy,, confirm their generation area, can confirm the destruction height of superincumbent stratum through to adding up greater than other microseismic event of certain energy level.
According to the monitoring range of probe, what adjacent microseism was popped one's head in is spaced apart 400 meters to 800 meters.
In the position of arranging the microseism probe model being installed is φ 18; Length is the anchor pole of 3.5m; The anchor pole afterbody is reserved the thread segment of 3～5cm, and the microseism probe is screwed on the thread segment of anchor pole afterbody clockwise, with signal cable all microseism probes is connected on the Microseismic monitoring system then.
The position calculation that the ARAMIS_WIN software of Microseismic monitoring system is popped one's head in according to microseism goes out the three-dimensional coordinate and the energy of microseismic event, wherein uses a velocity of wave parameter, and this velocity of wave is 4000m/s, and this software of other parameters is all reserved.The three-dimensional coordinate of the microseismic event of gained and energy show on said mining engineering plan then, are used for showing in real time the microseismic event position; This Microseismic monitoring system is Polish instrument.The Microseismic monitoring system that different manufacturers is produced, the title of this software is different.
More than be preferred embodiment of the present invention and design graphic; Above-mentioned preferred embodiment and designing graphicly only illustrates; Be not to be used to limit interest field of the present invention; All with equalization technological means or be the interest field that contained of the application's claim and the implementer does not all break away from protection scope of the present invention.
Claims (3)
1. the monitoring method of a stope superincumbent stratum destruction height, it is characterized in that: step is following:
The workplace of choosing a normal exploitation is as the monitored area;
Arrange some microseism probes based on the length of working face and the size of this monitored area; Choose Microseismic monitoring system as monitoring equipment; This Microseismic monitoring system is connected with each microseism probe through cable, and said microseism probe is arranged in adhesive tape crossheading, track crossheading and goes up in the go-downhill roadway around said monitored area;
Measure the three-dimensional coordinate xyz of said microseism probe position; The latitude of x representative probe; The longitude of y representative probe, the sea level elevation of z representative probe is input to Microseismic monitoring system with the three-dimensional coordinate xyz that records; Through the mining engineering plan of storing in this Microseismic monitoring system, the position that microseism is popped one's head in marks on this mining engineering plan;
The position calculation that Microseismic monitoring system is popped one's head in according to microseism goes out the three-dimensional coordinate and the energy of microseismic event, on said mining engineering plan, shows then, is used for showing in real time the microseismic event position;
Verify the Microseismic monitoring system locating accuracy through the mode of human-generated explosives, and optimize the arrangement that microseism is popped one's head in,, can regulate the distance between the probe, drop to zone of reasonableness until error if error is excessive according to test findings;
Utilize the coordinate of the microseismic event that the Microseismic monitoring system analysis monitors and the size of energy,, confirm their generation area, can confirm the destruction height of superincumbent stratum through to adding up greater than other microseismic event of certain energy level.
2. the monitoring method of a kind of stope superincumbent stratum destruction height according to claim 1 is characterized in that: according to the monitoring range of probe, what adjacent microseism was popped one's head in is spaced apart 400 meters to 800 meters.
3. the monitoring method of a kind of stope superincumbent stratum destruction height according to claim 2; It is characterized in that: in the position of arranging the microseism probe model being installed is φ 18; Length is the anchor pole of 3.5m; The anchor pole afterbody is reserved the thread segment of 3～5cm, and the microseism probe is screwed on the thread segment of anchor pole afterbody clockwise.
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| CN2010105130253A CN102455176A (en) | 2010-10-20 | 2010-10-20 | Monitoring method of damage height of overlying strata in mining field |
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| CN2010105130253A CN102455176A (en) | 2010-10-20 | 2010-10-20 | Monitoring method of damage height of overlying strata in mining field |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955025A (en) * | 2012-11-14 | 2013-03-06 | 山东科技大学 | Method for determining height and range of stope overlying rock beam fracture zone of coal mine |
| CN103790628A (en) * | 2013-05-30 | 2014-05-14 | 天地科技股份有限公司 | Warning evaluation method for fully mechanized mining face roof disasters |
| CN105652314A (en) * | 2015-12-29 | 2016-06-08 | 大连理工大学 | Microseismic monitoring-based coal mine floor damage depth determining method |
| CN106093341A (en) * | 2016-05-30 | 2016-11-09 | 中国矿业大学 | The experimental provision of the surface drilling sliding deformation disrumpent feelings rule of inverting overlying strata and method |
| CN112305608A (en) * | 2020-10-28 | 2021-02-02 | 河北煤炭科学研究院有限公司 | Method and device for calculating pressure step of stope face and terminal equipment |
| WO2023226396A1 (en) * | 2022-05-25 | 2023-11-30 | 中煤科工开采研究院有限公司 | Overlying rock damage height determination method and apparatus, electronic device and storage medium |
-
2010
- 2010-10-20 CN CN2010105130253A patent/CN102455176A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955025A (en) * | 2012-11-14 | 2013-03-06 | 山东科技大学 | Method for determining height and range of stope overlying rock beam fracture zone of coal mine |
| CN103790628A (en) * | 2013-05-30 | 2014-05-14 | 天地科技股份有限公司 | Warning evaluation method for fully mechanized mining face roof disasters |
| CN105652314A (en) * | 2015-12-29 | 2016-06-08 | 大连理工大学 | Microseismic monitoring-based coal mine floor damage depth determining method |
| CN105652314B (en) * | 2015-12-29 | 2018-05-25 | 大连理工大学 | Based on the definite method of the mine floor collapse dept of micro seismic monitoring |
| CN106093341A (en) * | 2016-05-30 | 2016-11-09 | 中国矿业大学 | The experimental provision of the surface drilling sliding deformation disrumpent feelings rule of inverting overlying strata and method |
| CN112305608A (en) * | 2020-10-28 | 2021-02-02 | 河北煤炭科学研究院有限公司 | Method and device for calculating pressure step of stope face and terminal equipment |
| CN112305608B (en) * | 2020-10-28 | 2022-12-27 | 河北煤炭科学研究院有限公司 | Method and device for calculating pressure step of stope face and terminal equipment |
| WO2023226396A1 (en) * | 2022-05-25 | 2023-11-30 | 中煤科工开采研究院有限公司 | Overlying rock damage height determination method and apparatus, electronic device and storage medium |
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Application publication date: 20120516 |