CN105545299B - Concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position - Google Patents
Concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position Download PDFInfo
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- CN105545299B CN105545299B CN201510893267.2A CN201510893267A CN105545299B CN 105545299 B CN105545299 B CN 105545299B CN 201510893267 A CN201510893267 A CN 201510893267A CN 105545299 B CN105545299 B CN 105545299B
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- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910052704 radon Inorganic materials 0.000 title claims abstract description 71
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 239000011435 rock Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 229920003023 plastic Polymers 0.000 claims abstract description 15
- 241001269238 Data Species 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 39
- 239000007789 gas Substances 0.000 description 30
- 238000001514 detection method Methods 0.000 description 7
- 238000005065 mining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100032908 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RAD7 gene Proteins 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/081—Obtaining fluid samples or testing fluids, in boreholes or wells with down-hole means for trapping a fluid sample
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/084—Obtaining fluid samples or testing fluids, in boreholes or wells with means for conveying samples through pipe to surface
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
- E21B49/0875—Well testing, e.g. testing for reservoir productivity or formation parameters determining specific fluid parameters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Radiation (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Concentration in-situ determination method, including step is precipitated in radon gas in a kind of coal rock layer of underground different layers position：It determines and carries out the underground different layers position coal rock layer that concentration mensuration is precipitated in radon gas, and number is L respectively1~Ln；The coefficient of determination of automatic calibration Continuous Instrument for Radon (7)；Cylinder type hollow rubber piston (3) is fixedly set on the end of plastic flexible pipe (4), and is put it into exploratory bore-hole (2)；Measure L1In radon gas be precipitated concentration when, often measure 1h record a data, continuously measure 3h, three data of acquisition be recorded as C respectively11、C12And C13, take the average value of three as L1In radon gas be precipitated concentration, be denoted as C1；L is measured successively2、L3……Ln, and final measurement is denoted as C respectively2、C3……Cn.The measurement that concentration is precipitated in radon gas in all layers of position coal rock layer need to only can be completed in the present invention in existing exploratory bore-hole, eliminate the interference of dimensional effect and outside environmental elements to measurement result, be truly realized live in-site detecting.
Description
Technical field
The invention belongs to coal underground mining technologies fields, and in particular to radon gas is analysed in a kind of coal rock layer of underground different layers position
Go out concentration in-situ determination method, is primarily adapted for use in China's western shallow-reserved depth coal rock layer and underground of the thickness in monolayer more than 0.5m is different
In the coal rock layer of layer position.
Background technology
Radon gas is a kind of natural radioactive rare gas of colorless and odorless, it is difficult to be therefore easily perceived by humans, it is long-term to suck radon gas meeting
The health care belt of people is injured, it is referred to as " stealthy killer " that people, which are accustomed to radon gas,.Radon is distributed widely in the earth's crust, and activity is very
By force, there is preferable transfer ability under field conditions (factors), in geological environment divided by gaseous form migration is outer, moreover it is possible to dissolving
State is migrated with underground water and the soil water；Radon gas can migrate in the range of underground at least 400m or so from the coal rock layer of underground
To earth's surface.In the upward transition process of radon gas, working face in the pit and lane space can be entered, forms the radon gas of higher concentration.Coal
Radon concentration is approximately 10 times in ground environment under mine, and underground radon and its daughter are more than that several times of state health standards are even several
Ten times.Therefore, carrying out accurate measure to radon concentration in the coal rock layer of different layers position is particularly important, this is to ensure underground labour
The important leverage of life and health safety.In addition, studies at home and abroad show that, the geological disasters such as earthquake, volcano will appear when occurring
Therefore Radon Anomaly phenomenon can carry out the geological disasters such as earthquake detection by Radon monitor.Radon gas Detection Techniques are used as one kind very
Promising geophysical exploration method is to some degree the detection of mining overburden crack, coal mine latent ground texture
The prediction for making the coal rock dynamic disasters such as detection, the detection of spontaneous combustion of coal seam primer sector and coal and gas prominent provides a kind of pole
The detection means of tool foreground.
Since radon has radioactivity, even if can be measured if concentration very little；It has the earth object of inert gas again simultaneously
Physicochemical property can be transmitted and be gathered in microfissure or micropore, this with regard to for earth's surface carry out radon gas detection provide according to
According to.People once by establishing Radon migration mathematical model, were deduced the radon gas along the coal rock layer of subterranean depth direction different layers position
The Mathematical express formula of concentration is precipitated.In order to further verify and improve theory deduction as a result, just must be to underground different layers position coal
Radon gas is precipitated concentration and is measured in rock stratum.Currently, it is main that concentration mensuration is precipitated for radon gas in the coal rock layer of underground different layers position
It is by choosing coal petrography sample at the scene, being then sent to laboratory and measure.Due to the shadow of dimensional effect and outside environmental elements
Ring, it is larger so as to cause final measurement and on-site actual situations difference, it is even more impossible to theory deduction result carry out verification with
It is perfect.
Invention content
The purpose of the present invention is to provide radon gas in a kind of coal rock layer of underground different layers position, and concentration in-situ determination method is precipitated,
This method radon gas in all layers of position coal rock layer need to only can be completed in existing exploratory bore-hole, the measurement of concentration is precipitated, and can disappear
Interference except dimensional effect and outside environmental elements to measurement result can really realize live in-site detecting.
To achieve the above object, concentration is precipitated the present invention provides radon gas in a kind of coal rock layer of underground different layers position to survey in situ
Determine method, steps are as follows：
A. according to the existing exploratory bore-hole position of working face earth's surface, and working face geology sectional view information is combined, determined
The required underground different layers position coal rock layer for carrying out radon gas and concentration mensuration being precipitated, and number is L respectively from top to bottom1~Ln；
B. after opening Continuous Instrument for Radon work 1h, according to live air pressure and humiture situation, Continuous Instrument for Radon is calibrated automatically
The coefficient of determination Continuous Instrument for Radon is closed after the completion of calibration to obtain accurate measurement result；
C. cylinder type hollow rubber piston is fixedly set in by the centre bore on its upper surface with graduated plastics
On the end of hose, and the plastic flexible pipe end for being cased with cylinder type hollow rubber piston is put into exploratory bore-hole, the plastics
The other end of hose is connected with micro-suction pump；It is small that the cylinder type hollow rubber piston side wall midpoint is arranged with four air inlets
Hole, outer diameter and the exploratory bore-hole aperture of cylinder type hollow rubber piston match, the aperture of the centre bore and plastic flexible pipe
Outer diameter matches；The micro-suction pump is connected by rubber hose with Continuous Instrument for Radon；
D. L is measured1When concentration is precipitated in radon gas in coal rock layer, by the lower surface of rubber piston and L1The lower boundary of coal rock layer
Then alignment opens Continuous Instrument for Radon and starts to measure again after first opening micro-suction pump work 1h, often measure 1h and record a survey
Fixed number evidence, co-continuous measurement 3h, and three determination datas of acquisition are recorded as C respectively11、C12And C13, take the average value of three
As L1Concentration is precipitated in radon gas in coal rock layer, is denoted as C1；
E. according to step d, L is measured successively2、L3……Ln, and final measurement is denoted as C respectively2、C3……Cn, directly
Terminate to measurement.
Preferably, the height of the cylinder type hollow rubber piston is 5~10cm, and the small air inlet hole aperture is 5mm.
Preferably, the aperture of the plastic flexible pipe is 10mm, and the aperture of the rubber hose is 5mm.
Preferably, the model KJD-2000R of the Continuous Instrument for Radon.
Preferably, the working flow of the micro-suction pump is 1L/min.
Compared with prior art, the present invention no longer needs to play gun drilling from working face earth's surface to underground, need to only be surveyed existing
Radon gas in all layers of position coal rock layer can be completed in prospecting bit hole, the measurement of concentration is precipitated, and eliminates dimensional effect and external environment
Interference of the factor to measurement result, is truly realized live in-site detecting.This method passes through cylinder type hollow rubber piston, miniature
The measurement that concentration is precipitated in radon gas in all layers of position coal rock layer, whole process peace can be realized in aspiration pump, Continuous Instrument for Radon and hose
It is small to fill quantities, measurement data, which obtains, to be easy, and is not limited by the specific mining conditions of underground coal mine, and operability is strong, cost
It is low, it is efficient, there is wide applicability and generalization.
Description of the drawings
Fig. 1 is the live in-site detecting operating diagram of the present invention；
Fig. 2 is the structural schematic diagram of cylinder type hollow rubber piston in the present invention；
In figure：1, working face earth's surface, 2, exploratory bore-hole, 3, cylinder type hollow rubber piston, 4, plastic flexible pipe, 5, miniature pumping
Air pump, 6, rubber hose, 7, Continuous Instrument for Radon, 8, centre bore, 9, small air inlet hole.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
As depicted in figs. 1 and 2, concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position, including
Following steps：
A. according to 1 existing exploratory bore-hole of working face earth's surface, 2 position, and working face geology sectional view information is combined, determined
The underground different layers position coal rock layer that concentration mensuration is precipitated in radon gas is carried out needed for going out, and number is L respectively from top to bottom1~Ln；
B. after opening the work of Continuous Instrument for Radon 7 1h, according to live air pressure and humiture situation, Continuous Instrument for Radon is calibrated automatically
7 coefficient of determination closes Continuous Instrument for Radon 7 to obtain accurate measurement result after the completion of calibration；
C. cylinder type hollow rubber piston 3 is fixedly set in by the centre bore 8 on its upper surface with graduated modeling
On the end for expecting hose 4, and 4 end of plastic flexible pipe for being cased with cylinder type hollow rubber piston 3 is put into exploratory bore-hole 2, institute
The other end for stating plastic flexible pipe 4 is connected with micro-suction pump 5；3 side wall midpoint of the cylinder type hollow rubber piston is arranged with
Four small air inlet holes 9, outer diameter and 2 aperture of exploratory bore-hole of cylinder type hollow rubber piston 3 match, the hole of the centre bore 8
The outer diameter of diameter and plastic flexible pipe 4 matches；The micro-suction pump 5 is connected by rubber hose 6 with Continuous Instrument for Radon 7；
D. L is measured1When concentration is precipitated in radon gas in coal rock layer, by the lower surface of rubber piston 3 and L1The lower boundary of coal rock layer
Then alignment opens Continuous Instrument for Radon 7 and starts to measure again after first opening the work of micro-suction pump 5 1h, often measure 1h and record one
Determination data, co-continuous measurement 3h, and three determination datas of acquisition are recorded as C respectively11、C12And C13, take being averaged for three
Value is used as L1Concentration is precipitated in radon gas in coal rock layer, is denoted as C1；
E. according to step d, L is measured successively2、L3……Ln, and final measurement is denoted as C respectively2、C3……Cn, directly
Terminate to measurement.
In order to more accurately measure the concentration that radon gas is precipitated in the coal rock layer of different layers position, the cylinder type hollow rubber piston
3 height is 5~10cm, and 9 aperture of the small air inlet hole is 5mm.
In order to enable radon gas evenly steadily in soft Bottomhole pressure, to keep measurement result more accurate, the plastic flexible pipe 4
Aperture is 10mm, and the aperture of the rubber hose 6 is 5mm.
The model of the Continuous Instrument for Radon 7 can be KJD-2000R, RAD7, BY68-1027, HYB03-BH3212 or
SLT-2000R；In order to reduce cost and be suitable for outdoor cryogenic conditions, the model for the Continuous Instrument for Radon 7 selected in the present invention is
KJD-2000R。
In order to enable radon gas evenly steadily in soft Bottomhole pressure, to keep measurement result more accurate, the miniature pumping
The working flow of pump 5 is 1L/min.
Claims (4)
1. concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position, it is characterised in that：Including following step
Suddenly：
A. according to working face earth's surface (1) existing exploratory bore-hole (2) position, and working face geology sectional view information is combined, determined
The underground different layers position coal rock layer that concentration mensuration is precipitated in radon gas is carried out needed for going out, and number is L respectively from top to bottom1~Ln；
B. after opening Continuous Instrument for Radon (7) work 1h, according to live air pressure and humiture situation, Continuous Instrument for Radon is calibrated automatically
(7) the coefficient of determination closes Continuous Instrument for Radon (7) to obtain accurate measurement result after the completion of calibration；
C. cylinder type hollow rubber piston (3) is fixedly set in by the centre bore (8) on its upper surface with graduated modeling
On the end for expecting hose (4), and plastic flexible pipe (4) end for being cased with cylinder type hollow rubber piston (3) is put into exploratory bore-hole
(2) in, the other end of the plastic flexible pipe (4) is connected with micro-suction pump (5)；Cylinder type hollow rubber piston (3) side
Wall midpoint is arranged with four small air inlet holes (9), outer diameter and exploratory bore-hole (2) aperture phase of cylinder type hollow rubber piston (3)
Matching, the aperture of the centre bore (8) and the outer diameter of plastic flexible pipe (4) match；The micro-suction pump (5) is soft by rubber
Pipe (6) is connected with Continuous Instrument for Radon (7)；The height of the cylinder type hollow rubber piston (3) is 5~10cm, and the air inlet is small
Hole (9) aperture is 5mm；
D. L is measured1When concentration is precipitated in radon gas in coal rock layer, by the lower surface of rubber piston (3) and L1The lower boundary pair of coal rock layer
Together, after first opening micro-suction pump (5) work 1h, Continuous Instrument for Radon (7) is then opened again and starts to measure, often measure 1h records one
A determination data, co-continuous measurement 3h, and three determination datas of acquisition are recorded as C respectively11、C12And C13, take putting down for three
Mean value is as L1Concentration is precipitated in radon gas in coal rock layer, is denoted as C1；
E. according to step d, L is measured successively2、L3……Ln, and final measurement is denoted as C respectively2、C3……Cn, until surveying
Amount terminates.
2. concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position according to claim 1,
It is characterized in that：The aperture of the plastic flexible pipe (4) is 10mm, and the aperture of the rubber hose (6) is 5mm.
3. concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position according to claim 1,
It is characterized in that：The model KJD-2000R of the Continuous Instrument for Radon (7).
4. concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position according to claim 1,
It is characterized in that：The working flow of the micro-suction pump (5) is 1L/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510893267.2A CN105545299B (en) | 2015-12-08 | 2015-12-08 | Concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position |
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| CN201510893267.2A CN105545299B (en) | 2015-12-08 | 2015-12-08 | Concentration in-situ determination method is precipitated in radon gas in a kind of coal rock layer of underground different layers position |
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| CN105545299B true CN105545299B (en) | 2018-10-02 |
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| CN106569253B (en) * | 2016-10-28 | 2019-04-16 | 核工业北京地质研究院 | A kind of method of the total measurement type Activated Carbon Instrument for testing Radon of fine adjustment gamma |
| CN106569252A (en) * | 2016-10-28 | 2017-04-19 | 核工业北京地质研究院 | Method of correcting consistency of gamma total amount measurement type active carbon emanometer |
| CN108152172B (en) * | 2017-12-04 | 2020-06-16 | 福建师范大学 | System and method for measuring radon diffusion coefficient |
| CN108680467B (en) * | 2018-05-21 | 2020-07-10 | 南华大学 | Method for in-situ determination of radon diffusion coefficient and transportable radon generation rate in underground engineering |
| 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 |
| CN112098625B (en) * | 2020-09-05 | 2022-10-25 | 宁波弘宇检测有限公司 | Radon gas detection method |
| CN112709602B (en) * | 2020-12-16 | 2021-10-29 | 中国矿业大学 | Surrounding rock loosening ring measuring method based on radon gas evolution concentration |
| CN116429663B (en) * | 2023-06-08 | 2023-09-12 | 太原理工大学 | Device and method for measuring radon gas seepage rate in coal-rock medium |
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| US20080156482A1 (en) * | 2005-05-12 | 2008-07-03 | Alekseyevich Vladimir Gubar | Method for the Treatment of the Obstructed Zones of the Parent Rock of Hydrocarbon-Producing Strata Adjacent to a Gas and Oil Well Drilling Zone in Order to Increase Productivity |
| CN201028996Y (en) * | 2007-03-16 | 2008-02-27 | 成都理工大学 | Soil emanometer |
| CN202362223U (en) * | 2011-11-21 | 2012-08-01 | 张金川 | High-precision gas content tester |
| CN202832347U (en) * | 2012-10-18 | 2013-03-27 | 铁道第三勘察设计院集团有限公司 | Gas seal device for radon gas reconnaissance |
| CN203299032U (en) * | 2013-04-27 | 2013-11-20 | 山东农业大学 | Simple device for collecting soil gas in large field by adopting dynamic balance method |
| CN203849065U (en) * | 2014-05-06 | 2014-09-24 | 福建省农业科学院农业生态研究所 | Soil profile air collecting device |
| CN204331045U (en) * | 2014-12-15 | 2015-05-13 | 河南众信质量检验技术研究有限公司 | A kind of sampler of Soil Radon detector |
| CN204373967U (en) * | 2015-02-04 | 2015-06-03 | 扬州大学 | A kind of harvester of different depth soil gas |
| CN104614207B (en) * | 2015-02-13 | 2018-01-05 | 中国科学院地理科学与资源研究所 | A kind of soil gas active harvester and acquisition method |
| CN204694650U (en) * | 2015-06-04 | 2015-10-07 | 核工业二九○研究所 | A kind of new soil emanometer |
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