CN103558646A - Method of detecting dynamic developmental situation of overburden mining-induce fissure in radon gas earth surface - Google Patents
Method of detecting dynamic developmental situation of overburden mining-induce fissure in radon gas earth surface Download PDFInfo
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- CN103558646A CN103558646A CN201310527522.2A CN201310527522A CN103558646A CN 103558646 A CN103558646 A CN 103558646A CN 201310527522 A CN201310527522 A CN 201310527522A CN 103558646 A CN103558646 A CN 103558646A
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Abstract
The invention provides a method of detecting the dynamic developmental situation of an overburden mining-induce fissure in a radon gas earth surface. The position of a boundary, corresponding to a working surface, of the earth surface is determined according to the geographic coordinates of the position of an underground working surface in combination with a surface-underground contrast plan of the working surface; measuring lines are arranged from the position of an open-off cut of the working surface in the direction perpendicular to the trend of the working surface within a measuring area range defined at the position of the boundary, and then measuring points are arranged on all the measuring lines; a probe cup of an emanometer is buried in soil on the earth surface at the measuring points in an inverted mode, the probe cup is taken out and placed into the emanometer for measurement four hours later, and a measurement result is stored in the emanometer after the measurement is completed; after the measurement at all the measuring points is completed, measurement data in the emanometer are uploaded to a notebook computer through a data line, and a radon gas concentration variation diagram of the measuring area is drawn. According to the abnormal characteristics of radon gas concentration variation of the measuring area, the dynamic developmental situation of the overburden mining-induce fissure is obtained through inverse analysis. The method is high in operability, low in cost, high in efficiency, and broad in practicability and popularization.
Description
Technical field
The present invention relates to a kind of detection overlying strata mining-induced fissure dynamic development situation method, be especially applicable to a kind of radon gas surface exploration overlying strata mining-induced fissure dynamic development situation method of mine of western shallow buried coal seam underground mining.
Background technology
The up-to-date coal reserves in the whole nation predicts the outcome and shows, coal resources in China presents few, the northern rich southern poor overall general layout of Xi Duodong in geographic distribution, and be mainly distributed in western 6 provinces (autonomous region) such as the Inner Mongol, Shanxi, Shaanxi, Xinjiang, Guizhou, Ningxia, account for 82.8% of national coal resources total amount.In recent years, along with petering out of the most of mining area coal resources in the central and east, the total arrangement that the center of gravity of coal resources in China exploitation shifts to western part from east gradually, also clear and definite in coal industry " 12 " development plan " controlling east, stable middle part, development western ".Yet because more shallow (in 200 m) are buried in coal seam, China mine of western, be located in innerland, inland, the long-term drought in region, water resource is very poor, and desertification degree is higher, and surface environment system is very fragile, and soil erosion is extremely serious.The extensive high strength exploitation of underground coal resource, very easily cause overlying strata mining-induced fissure to be expanded from bottom to top directly and earth's surface communication, cause that shallow table water and underground water are missed, surface vegetation is withered, desertification of land trend is aggravated, water burst in face is burst a series of safety and environment disasters such as sand and spontaneous combustion of coal seam ignition hazard, cause very fragile Eco-Environment System originally constantly to worsen, make potential physical environment fragility transform into real destruction.Therefore, how to grasp accurately and effectively the Dynamic Evolutional rule of overlying strata mining-induced fissure field, become the important foundation that solves China's mine of western Coal Resource Development and safety and environmental hazard prevention three contradiction.
Current, field engineering detection method about overlying strata mining-induced fissure development characteristics aspect is more, mainly contains drilling fluid method, borehole television method, boring deep basic point method, ultrasonic imaging and digital well log method, borehole radar probe method, acoustic CT tomography, boring High Density Resistivity, ultrasound wave through transmission technique, down-hole uphole water filling leak hunting method, acoustic emission monitor(ing) method, geologic radar detection method, micro seismic monitoring method, electromagnetic radiation monitoring method and nuclear magnetic resonance probe method etc.The shortcomings such as existing engineering sounding method not only exists that installation work amount is large, complicated operation, cost is high and data acquisition is difficult, and be subject to adopt in advance support pressure impact and be difficult to reach omnidistance monitoring, cannot reflect that workplace adopts overall process completely, can not accurately judge the dynamic development situation of overlying strata mining-induced fissure, more be difficult to determine whether with top loose aquifer and link up, had a strong impact on effective enforcement of mine safety high efficient mining technology.
Radon is a kind of chemical element, and its common simple substance form is radon gas, and what be that the mankind touch uniquely has a heaviest radioactive inert gas, is extensively present among the coal, rock, soil and water of occurring in nature.Because radon has radioactivity, even if concentration is very little, also can be measured; It has again the physical chemistry of the earth character of inert gas simultaneously, in microfissure or microporosity, can transmit and gather; This just provides foundation for utilize radon gas to survey overlying strata mining-induced fissure dynamic development situation on earth's surface.
Summary of the invention
Technical matters: a kind of radon gas surface exploration overlying strata mining-induced fissure dynamic development situation method that the object of the invention is to provide in order to overcome the deficiencies in the prior art part simple fast and reliable.
Technical scheme: radon gas surface exploration overlying strata mining-induced fissure dynamic development situation method of the present invention:
A. according to mining face under mine location geographic coordinate, in conjunction with workplace surface-underground contrast plan, determine corresponding four, the earth's surface of workplace boundary position;
B. in the coverage of survey area of four boundary position delineations, from workplace location of starting cut, along move towards direction perpendicular to workplace, every 20～30 m, arrange a survey line, then on all surveys line, every 10～20 m, arrange a measuring point;
C. will
αthe spy cup of cup accumulation emanometer is inverted and is embedded in the surface soil at 30～40 cm places under measuring point, and interval is taken out spy cup and put into after four hours
αin cup accumulation emanometer, measure, after having measured, measurement result is stored in
αin cup accumulation emanometer;
D. after all measuring point measurements complete, incite somebody to action
αmeasurement data in cup accumulation emanometer is uploaded in notebook computer by usb data line, and the radon concentration of drawing out survey district changes 3 dimensional drawing, according to the radon concentration variation abnormality feature of surveying district, further back analysis goes out the dynamic development situation of workplace overlying strata mining-induced fissure.
Beneficial effect: when the present invention utilizes radon gas to survey overlying strata mining-induced fissure dynamic development situation on workplace earth's surface, only need in advance the measuring point in coverage of survey area to be arranged, then can carry out on-the-spot radon gas surface exploration, be not subject to the impact of underground work mask body mining geologic condition, can realize the detection that workplace is adopted overall process.The method is workable, and cost is low, and efficiency is high, has practicality and generalization widely.
Accompanying drawing explanation
Accompanying drawing is on-the-spot radon gas surface exploration work schematic diagram of the present invention.
In figure: 1-boundary position; 2-location of starting cut; 3-survey line; 4-measuring point; 5-
αcup accumulation emanometer; 6-visits cup; 7-USB data line; 8-notebook computer.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Radon gas surface exploration overlying strata mining-induced fissure dynamic development situation method of the present invention, before carrying out in-situ measurement, according to mining face under mine location geographic coordinate, in conjunction with workplace surface-underground contrast plan, determines corresponding four, the earth's surface of workplace boundary position 1.In the coverage of survey area of four boundary positions, 1 delineation, from workplace location of starting cut 2, along move towards direction perpendicular to workplace, every 20～30 m, arrange a survey line 3, then on all surveys line 3, every 10～20 m, arrange a measuring point 4.Will
αthe spy cup 6 of cup accumulation emanometer 5 is inverted and is embedded in the surface soil at 4 times 30～40 cm places of measuring point, and interval is taken out spy cup 6 and put into after four hours
αin cup accumulation emanometer 5, measure, after having measured, measurement result is stored in
αin cup accumulation emanometer 5.After all measuring points 4 have been measured, will
αmeasurement data in cup accumulation emanometer 5 is uploaded in notebook computer 8 by usb data line 7, and draws out the radon concentration variation 3 dimensional drawing of surveying district.According to the radon concentration variation abnormality feature of surveying district, further back analysis goes out the dynamic development situation of workplace overlying strata mining-induced fissure.
Claims (1)
1. a radon gas surface exploration overlying strata mining-induced fissure dynamic development situation method, is characterized in that:
A. according to mining face under mine location geographic coordinate, in conjunction with workplace surface-underground contrast plan, determine corresponding four boundary positions in earth's surface (1) of workplace;
B. in the coverage of survey area of four boundary positions (1) delineation, from workplace location of starting cut (2), along move towards direction perpendicular to workplace, every 20～30 m, arrange a survey line (3), then upper every 10～20 m layout measuring points (4) at all surveys line (3);
C. will
αthe spy cup (6) of cup accumulation emanometer (5) is inverted and is embedded in the surface soil at 30～40 cm places under measuring point (4), and interval is taken out spy cup (6) and put into after four hours
αin cup accumulation emanometer (5), measure, after having measured, measurement result is stored in
αin cup accumulation emanometer (5);
D. after all measuring points (4) have been measured, incite somebody to action
αmeasurement data in cup accumulation emanometer (5) is uploaded in notebook computer (8) by usb data line (7), and the radon concentration of drawing out survey district changes 3 dimensional drawing, according to the radon concentration variation abnormality feature of surveying district, further back analysis goes out the dynamic development situation of workplace overlying strata mining-induced fissure.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104360405A (en) * | 2014-12-02 | 2015-02-18 | 中国矿业大学 | Comprehensive detection method for dynamic movement characteristics of overlying strata in site |
| CN104832163A (en) * | 2015-05-20 | 2015-08-12 | 辽宁工程技术大学 | Method for monitoring rock burst dangerousness in coal underground mining process |
| CN107345484A (en) * | 2017-06-29 | 2017-11-14 | 中国矿业大学 | A kind of high seam lower leaf " mixing top plate " integrality detection and its control method |
| CN107478392A (en) * | 2017-09-21 | 2017-12-15 | 河海大学 | Based on radon isotope it is coastal enter drainage gate facility leakage detection method |
| CN107526920A (en) * | 2017-07-19 | 2017-12-29 | 青岛理工大学 | A kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method |
| CN112612059A (en) * | 2020-12-25 | 2021-04-06 | 中国矿业大学 | Nondestructive detection method for three-dimensional model mining-induced fracture development characteristics |
| CN114114439A (en) * | 2020-08-26 | 2022-03-01 | 神华神东煤炭集团有限责任公司 | Automatic monitoring device and method for self-repairing condition of overburden mining-induced fracture |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360405A (en) * | 2014-12-02 | 2015-02-18 | 中国矿业大学 | Comprehensive detection method for dynamic movement characteristics of overlying strata in site |
| CN104832163A (en) * | 2015-05-20 | 2015-08-12 | 辽宁工程技术大学 | Method for monitoring rock burst dangerousness in coal underground mining process |
| CN104832163B (en) * | 2015-05-20 | 2017-05-31 | 辽宁工程技术大学 | The dangerous monitoring method of bump in a kind of coal mine underground exploitation |
| CN107345484A (en) * | 2017-06-29 | 2017-11-14 | 中国矿业大学 | A kind of high seam lower leaf " mixing top plate " integrality detection and its control method |
| CN107526920A (en) * | 2017-07-19 | 2017-12-29 | 青岛理工大学 | A kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method |
| CN107526920B (en) * | 2017-07-19 | 2022-01-14 | 青岛理工大学 | Method for analyzing corresponding relation between new surface subsidence dynamic process and overlying strata abscission layer development |
| CN107478392A (en) * | 2017-09-21 | 2017-12-15 | 河海大学 | Based on radon isotope it is coastal enter drainage gate facility leakage detection method |
| CN107478392B (en) * | 2017-09-21 | 2018-04-20 | 河海大学 | It is coastal into drainage gate facility leakage detection method based on radon isotope |
| CN114114439A (en) * | 2020-08-26 | 2022-03-01 | 神华神东煤炭集团有限责任公司 | Automatic monitoring device and method for self-repairing condition of overburden mining-induced fracture |
| CN114114439B (en) * | 2020-08-26 | 2024-04-23 | 神华神东煤炭集团有限责任公司 | Automatic monitoring device and method for automatic recovery condition of overburden mining fracture |
| CN112612059A (en) * | 2020-12-25 | 2021-04-06 | 中国矿业大学 | Nondestructive detection method for three-dimensional model mining-induced fracture development characteristics |
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Inventor after: Zhang Wei Inventor after: Zhang Dongsheng Inventor after: Wu Lixin Inventor after: Wang Xufeng Inventor after: Ma Liqiang Inventor after: Fan Gangwei Inventor before: Zhang Wei Inventor before: Zhang Dongsheng Inventor before: Wang Xufeng Inventor before: Ma Liqiang Inventor before: Fan Gangwei Inventor before: Wu Lixin |
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Application publication date: 20140205 |