CN102645674A - Three-dimensional detection method for use before exploitation of working surface coal bed - Google Patents
Three-dimensional detection method for use before exploitation of working surface coal bed Download PDFInfo
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- CN102645674A CN102645674A CN201210112477XA CN201210112477A CN102645674A CN 102645674 A CN102645674 A CN 102645674A CN 201210112477X A CN201210112477X A CN 201210112477XA CN 201210112477 A CN201210112477 A CN 201210112477A CN 102645674 A CN102645674 A CN 102645674A
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Abstract
The invention discloses a three-dimensional detection method for use before exploitation of a working surface coal bed. The method comprises the following specific steps of: detecting whether a buried geological structure exists at the position of the working surface coal bed by adopting a radio wave tunnel penetration technology, and determining the specific position and range of the buried geological structure; detecting whether a buried water guide structure exists in the range of a working surface bottom plate or top plate by adopting an amplitude-frequency-electricity penetration technology, and determining the specific position and range of the buried water guide structure; detecting whether a buried water guide structure exists below a tunnel bottom plate by adopting a direct-current depth measurement technology, and evaluating; and completely detecting whether buried water guide structures exist inside the working surface and on the bottom plate, the top plate and the periphery by adopting a transient electromagnetic detection technology. The three-dimensional detection method has the beneficial effects that true space detection is realized, the water inrush hidden trouble situation in the damage influence range of stoping on the working surface coal bed can be checked to the maximum extent, accidents are effectively avoided, and the life and property safety of people are ensured.
Description
Technical field
The present invention relates to a kind of detection method, preceding three-dimensional probe method is adopted in especially a kind of workplace coal seam, belongs to the coal seam and adopts preceding physical prospecting technical field.
Background technology
Traditional workplace is adopted preceding physical prospecting, and belonging to workplace inside and workplace base plate is the narrow sense detection of main detected object.Can only have or not latent permeable structure and gushing water hidden danger to survey, estimate to workplace inside and workplace base plate; Belonging to semispace surveys; Be based on workplace and adopt a kind of static instrumentation of preceding state of nature; Do not consider back production to workplace top and around possibly have latent permeable structure or water body in the formation damage coverage, and cause the situation of gushing water.
On October 29th, 1991, three exploiting fields, Yancheng mineral bureau Nan Zhuan ore deposit-130 level south stopped adopting back 103 days, especially big hysteresis gushing water accident, and water yield 2820m3/h, full ore deposit stops production.Main cause is under ore deposit pressure, hydraulic pressure combined action, and the 100 meters position Korea Spro 1 tomography water preventing abilities in the 2030 workplaces outside change, and Ordovician karst water is outstanding along distributed fault, leads to especially big gushing water accident.
2009, in the Meihekou City of Tonghua, Jilin and colliery " 11.27 " top board water (mud) accident of bursting, 16 miners are wrecked.Immediate cause is exactly a working face extraction, and the top board mining-induced fissure is linked up the old dead zone of ponding, top, causes water, mud, sand all down, floods that roadway workface causes.
On May 29th, 2011, water leak accident, dead 13 people take place in Fu Hong colliery, Guiyang City, Guizhou Province Zhu Chang town; May 31, water leak accident, dead 8 people take place in the den of illegally mining, one place, state, the south of Guizhou Province, Guizhou Province.Culprit all is that goaf, recovery process middle and upper part ponding situation is unclear, adopts to destroy and is with the old dead zone of communication to cause water leak accident.
Most working face extraction gushing waters with adopt the back gushing water,, be the inevitable outcome of adopting destruction crack and latent conduit pipe (or water body) conducting all with to adopt destruction relevant.And these gushing water hidden danger both be present in the workplace floor below, also were present in each orientation, space such as face roof top, workplace periphery.These gushing water hidden danger both possibly be Ordovician karst water, old empty water, also possibly be water guide karst collapse col umn or water guide tomography, water guide crack dense band etc.For surveying such as face roof top, peripheral these the latent gushing water hidden danger of workplace, detection method was not all paid attention to before tradition was adopted, and therefore caused accident to take place easily.
Summary of the invention
The technical matters that the present invention will solve provides a kind of workplace coal seam and adopts preceding three-dimensional probe method, can realize the omnibearing stereo of gushing water hidden danger situation in the workplace coal seam back production destroying infection scope is surveyed, and effectively avoids the generation of gushing water accident.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is: preceding three-dimensional probe method is adopted in a kind of workplace coal seam, and its method step is following:
(1) adopts the radiowave tunnel to have an X-rayed layer position, technological detection operations face coal seam and whether have latent tectonic structure, and confirm its particular location and scope;
(2) adopt amplitude-frequency electricity perspective technology, to whether there being latent permeable structure in workplace base plate or the top board scope survey, and confirm its particular location and scope;
(3) adopt the DC detecting deep technology, whether exist latent permeable structure to survey and estimate the roadway floor below;
(4) adopt the transient electromagnetic detecting technology, whether exist latent permeable structure to survey comprehensively workplace inside, base plate, top board and periphery.
Tunnel perspective acceptance point spacing is 10 meters in the said step (1), and the launching site spacing is smaller or equal to 50 meters, and the corresponding tunnel length that receives of launching site single-point is not less than 150 meters.
The electric sounding dot spacing is smaller or equal to 20 meters in the said step (3), and depth measurement control gets into 70 meters of 30 meters of ashes difficult to understand or workplace floor below.
Detection angle in the same space direction in the said step (4) is more than two.
Said method expands to the total space of workplace mining influence scope with conventional investigative range by adopting leading face inside, base plate, realizes three-dimensional probe, and investigative range contains a plurality of orientation such as workplace inside, base plate, top board, periphery.Detection method is also adopted on workplace radiowave hole electricity perspective technology, workplace base plate electricity perspective technology and the Electric Sounding Technology in Survey of Wellpit basis, tunnel in traditional coal seam, has increased the comprehensive transient electromagnetic detecting technology of workplace.Because this technology fully takes into account working face extraction to dynamic destroying infection all around; Realized space exploration truly; Can survey, find out the gushing water hidden danger situation in the working face extraction destroying infection scope to greatest extent; Therefore, can scientificlly and effectively avoid in the back production and back production after the gushing water accident.
Beneficial effect of the present invention is following: on the basis of the present invention's geophysical prospecting method before adopt in conventional operation face coal seam; Increase the detection of face roof and peripheral direction; Adopt the transient electromagnetic detecting technology to realize the omnibearing stereo detection in workplace coal seam, realized space exploration truly, can find out the gushing water hidden danger situation in the workplace coal seam back production destroying infection scope to greatest extent; Effectively avoid accident to take place, guarantee people's the security of the lives and property.
Embodiment
Preceding three-dimensional probe method is adopted in workplace of the present invention coal seam, and concrete steps are following:
(1) adopts the radiowave tunnel to have an X-rayed layer position, technological detection operations face coal seam and whether have latent tectonic structure, and confirm its particular location and scope.Tunnel perspective acceptance point spacing is 10 meters, and the launching site spacing is smaller or equal to 50 meters, and the corresponding tunnel length that receives of launching site single-point is not less than 150 meters.
(2) adopt amplitude-frequency electricity perspective technology, to whether there being latent permeable structure in workplace base plate or the top board scope survey, and confirm its particular location and scope.
(3) adopt the DC detecting deep technology, whether exist latent permeable structure to survey and estimate the roadway floor below.The electric sounding dot spacing is smaller or equal to 20 meters, and depth measurement control gets into 70 meters of 30 meters of ashes difficult to understand or workplace floor below.
(4) adopt the transient electromagnetic detecting technology, whether exist latent permeable structure to survey comprehensively workplace inside, base plate, top board and periphery.
The present invention mainly contains following several kinds of different embodiments.
Scheme one: old empty pools zone, workplace top is surveyed
Adopt ring workplace multi-angle to wearing Detection Techniques.According to workplace scale, coal winning method, mining height, locus, goaf, top, adopt transient electromagnetic directional detection technology, the face roof oblique upper is carried out the 3-5 angle detection.
Adopt wide less, transient electromagnetic detecting distance when workplace and can satisfy when the workplace spatial dimension carried out all standing, only survey and in roadway workface, help to get final product; When workplace adopt wide big, when the transient electromagnetic detecting distance can not cover entire working surface, need that group surveys on the basis in roadway workface, increase directly over the back and outer group orientation detection, guarantee workplace and peripheral " prolonging the limit " are covered.
Scheme two: the workplace base plate is surveyed
This scheme designs to the workplace that has permeable structure threats such as base plate Ordovician karst water and latent karst collapse col umn, tomography in the exploitation process; Its principal feature is the comprehensive use of multiple geophysical prospecting method, and investigative range comprises whole spatial dimensions such as workplace inside, base plate and periphery.
The workplace base plate is surveyed, and transient electromagnetic detecting is general to be used with conventional electric sounding, electric perspective technology.On-the-spot its degree of depth range of control is mainly considered three aspect factor along the oblique arranged beneath 2-3 of a group detection angle in the roadway workface, and promptly base plate is adopted collapse dept, basal water buried depth and grouting and reinforcing layer position.With mining area, Xingtai is example, and main mining coal seam down apart from about 40 meters of gray area strong aquifers difficult to understand, accompanies one deck thin layer Benxi limestone between coal seam and the ash difficult to understand, and back production causes the workplace plate destructing depth generally in 20 meters, and extreme case can be above 50 meters.Therefore, get into the 30 meters calculating in grey top difficult to understand according to the base plate controlling depth, transient electromagnetic detecting should be attached most importance to the floor below 20-70 rice degree of depth, encrypts range of control.
Need to prove which the scene selects for use plant the geophysical prospecting method combination, needs to choose according to parameter science of carrying out such as workplace scale, coal seam to basal water spacings.
Generally can be divided into following several kinds of situation:
(1) adopts broad wall (adopting wide) for a short time less than 60 meters
This type workplace is wide less owing to adopting, and rice surplus the technological maximum probe degree of depth of electricity perspective often has only 20 belongs to invalid detection basically, generally can omit.At this time, can adopt the tunnel electric sounding to be aided with transient electromagnetic combined detection technology.Through two lane electric sounding intensive measurements, draw several different depths and survey the explanation tangent plane, as main explanation map.The transient electromagnetic technology is then mainly born the tiltedly peripheral detection mission in below of workplace base plate, detection angle 2-3 of the interior tiltedly below of face.
(2) the medium broad wall (adopting wide 60-200 rice) of adopting
This type workplace is the most common, generally can adopt electric sounding, electricity perspective, the conventional combined detection technology of transient electromagnetic.Tiltedly below detection angle 2-3 is individual in the transient electrical magnetic surface.
(3) adopt broad wall (adopt and be wider than 2000 meters) greatly
This type workplace is adopted wide too big, and the generally more weak or no signal of electricity perspective signal can't be used, and can adopt electric sounding, transient electromagnetic combined detection technology.Transient electromagnetic often is not enough to that workplace is carried out all standing and surveys owing to the range finding problem.Therefore, the oblique below of transient electromagnetic detection angle need increase to 3-4 in the face, and is abundant to guarantee data volume, and can draw the certain depth transient electromagnetic detecting that satisfies accuracy requirement and explain tangent plane, and as mainly explaining map.
Scheme three: workplace is peripheral to be surveyed
Whether workplace is peripheral is surveyed, be primarily aimed at the workplace periphery and adopt and exist gushing water hidden danger such as water guide tomography, karst collapse col umn to survey in the destroying infection scope.
Survey mainly at the upper and lower crossheading of workplace and cut outside the eye and help to carry out, consider that stopping adopting eye tunnel, line-spacing limit has tens meter ampere full distances, so measuring point generally can not arranged in eye tunnel, limit.
Same orientation detection angle is generally 2.The main key-course position of surveying is main with the seat earth below, and angle is unsuitable excessive between 2 detection angles, general 15 °～20 °.The plane control width requirement is as far as possible far away, minimumly is no less than 50 meters.
Claims (4)
1. three-dimensional probe method before adopt in a workplace coal seam is characterized in that its method step is following:
(1) adopts the radiowave tunnel to have an X-rayed layer position, technological detection operations face coal seam and whether have latent tectonic structure, and confirm its particular location and scope;
(2) adopt amplitude-frequency electricity perspective technology, to whether there being latent permeable structure in workplace base plate or the top board scope survey, and confirm its particular location and scope;
(3) adopt the DC detecting deep technology, whether exist latent permeable structure to survey and estimate the roadway floor below;
(4) adopt the transient electromagnetic detecting technology, whether exist latent permeable structure to survey comprehensively workplace inside, base plate, top board and periphery.
2. preceding three-dimensional probe method is adopted in workplace according to claim 1 coal seam; It is characterized in that; Tunnel perspective acceptance point spacing is 10 meters in the said step (1), and the launching site spacing is smaller or equal to 50 meters, and the corresponding tunnel length that receives of launching site single-point is not less than 150 meters.
3. preceding three-dimensional probe method is adopted in workplace according to claim 1 coal seam, it is characterized in that, the electric sounding dot spacing is smaller or equal to 20 meters in the said step (3), and depth measurement control gets into 70 meters of 30 meters of ashes difficult to understand or workplace floor below.
4. preceding three-dimensional probe method is adopted in workplace according to claim 1 coal seam, it is characterized in that, the detection angle in the same space direction in the said step (4) is more than two.
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| CN102681017A (en) * | 2012-05-31 | 2012-09-19 | 河北煤炭科学研究院 | Amplitude-frequency electric perspective detection method |
| CN103529479A (en) * | 2013-10-29 | 2014-01-22 | 淮南矿业(集团)有限责任公司 | Coal mine underground tunnel perspective detection system |
| CN103867229A (en) * | 2014-03-12 | 2014-06-18 | 河北煤炭科学研究院 | Coal mine large-mining-depth and next-group coal exploitation water control comprehensive treatment method |
| CN104819010A (en) * | 2015-03-26 | 2015-08-05 | 山东科技大学 | Construction method used for preventing roof and floor water inrush in the case that mine working surfaces pass through faults with water permeability |
| WO2015158153A1 (en) * | 2014-04-16 | 2015-10-22 | 河北煤炭科学研究院 | Water conservation method used in coal mining process |
| CN109944635A (en) * | 2019-04-15 | 2019-06-28 | 河北煤炭科学研究院 | Working face deep concealed permeable structure is detected and administering method |
| CN111208571A (en) * | 2020-01-21 | 2020-05-29 | 太原理工大学 | Well-ground combined detection method for multilayer mining water accumulation area |
| CN111708089A (en) * | 2020-06-30 | 2020-09-25 | 中国矿业大学 | Electromagnetic induction coal face structure detection method |
| CN113960680A (en) * | 2021-10-27 | 2022-01-21 | 河北煤炭科学研究院有限公司 | Pre-mining transient electromagnetic detection construction and interpretation method for water-bearing zone at upper part of short-distance coal seam |
| CN114019577A (en) * | 2021-09-13 | 2022-02-08 | 云南滇东雨汪能源有限公司 | Method, computer equipment and medium for advanced exploration of water-rich property in front of driving face |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102681017B (en) * | 2012-05-31 | 2014-11-05 | 河北煤炭科学研究院 | Amplitude-frequency electric perspective detection method |
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| CN103529479B (en) * | 2013-10-29 | 2016-10-05 | 淮南矿业(集团)有限责任公司 | Coal mine underground tunnel perspective detection system |
| CN103529479A (en) * | 2013-10-29 | 2014-01-22 | 淮南矿业(集团)有限责任公司 | Coal mine underground tunnel perspective detection system |
| CN103867229A (en) * | 2014-03-12 | 2014-06-18 | 河北煤炭科学研究院 | Coal mine large-mining-depth and next-group coal exploitation water control comprehensive treatment method |
| WO2015158153A1 (en) * | 2014-04-16 | 2015-10-22 | 河北煤炭科学研究院 | Water conservation method used in coal mining process |
| CN104819010A (en) * | 2015-03-26 | 2015-08-05 | 山东科技大学 | Construction method used for preventing roof and floor water inrush in the case that mine working surfaces pass through faults with water permeability |
| CN109944635A (en) * | 2019-04-15 | 2019-06-28 | 河北煤炭科学研究院 | Working face deep concealed permeable structure is detected and administering method |
| CN111208571A (en) * | 2020-01-21 | 2020-05-29 | 太原理工大学 | Well-ground combined detection method for multilayer mining water accumulation area |
| CN111208571B (en) * | 2020-01-21 | 2022-03-11 | 太原理工大学 | Well-ground combined detection method for multilayer mining water accumulation area |
| CN111708089A (en) * | 2020-06-30 | 2020-09-25 | 中国矿业大学 | Electromagnetic induction coal face structure detection method |
| CN111708089B (en) * | 2020-06-30 | 2021-09-17 | 中国矿业大学 | Electromagnetic induction coal face structure detection method |
| CN114019577A (en) * | 2021-09-13 | 2022-02-08 | 云南滇东雨汪能源有限公司 | Method, computer equipment and medium for advanced exploration of water-rich property in front of driving face |
| CN113960680A (en) * | 2021-10-27 | 2022-01-21 | 河北煤炭科学研究院有限公司 | Pre-mining transient electromagnetic detection construction and interpretation method for water-bearing zone at upper part of short-distance coal seam |
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