CN106802435A - The method of testing of two large categaries - Google Patents
The method of testing of two large categaries Download PDFInfo
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- CN106802435A CN106802435A CN201710033814.9A CN201710033814A CN106802435A CN 106802435 A CN106802435 A CN 106802435A CN 201710033814 A CN201710033814 A CN 201710033814A CN 106802435 A CN106802435 A CN 106802435A
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- categaries
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- seismic
- electromagnetic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
Abstract
The invention discloses a kind of method of testing of two large categaries.The method of testing is comprised the following steps：First, predicting the outcome for two large categaries is calculated by two large categaries formula；Secondly, the scope of research area's two large categaries is primarily determined that using electromagnetic method, 3-D seismic method, micro seismic monitoring method or seismic CT method；Again, the scope of fixed point two large categaries is further determined that using water filling pressure measuring system, borehole television system or drilling fluid observation system；Finally, by physical simulation or the scope of Simulation two large categaries.The method of testing of the two large categaries belongs to a kind of efficient detection assembled scheme, after caving zone and leaking crevice belt scope can on the whole be determined, defined boundaries using with targetedly detection method, the exact position in line of demarcation in checking small range, improve precision of prediction, it is to avoid the redundancy of technical resource and waste.
Description
Technical field
The present invention relates to mine safety exploitation field, more particularly to a kind of method of testing of two large categaries.
Background technology
At present, during most scholars are using former Ministry of Coal Industry " under three " exploitation code when overburden rock damage is studied,
" two bands " the development height estimating formula for proposing, by corresponding calculating, draws overlying strata maximal destruction highly." two bands " (two bands
Referring to caving zone and leaking crevice belt) high computational formula is as follows：
1) caving zone is highly
In view of the difference of roof physico-mechanical properties, different lithology can be calculated (table 1) by different formulas.
The empirical equation of the caving zone high computational of table 1
∑ M in each formula of upper table is cumulative thickness, and individual layer working thickness is no more than 1~3m, and cumulative thickness is no more than
15m。
2) height of the water conductive fracture zone
If roof for it is hard, in hard, weak and dead-soft incompetent beds or alternating layers when, leaking crevice belt maximum height can be pressed
Empirical equation is estimated in statistical form 2.
The computing formula of the level of table 2, low-angle dip and middle inclined seam height of the water conductive fracture zone
The empirical value of the two large categaries of also with good grounds national recent statistics, medium-hard overburden rocks may be referred to medium-hard overburden rocks water guide and split
Seamed belt height is reciprocal and adopts thick inverse regression equation：
But existing computational methods have certain deficiency, because the complex geologic conditions of engineering site, various regions lithology is poor
Very not big, the formula that former Ministry of Coal Industry is given generally can not accurately obtain two large categaries data by simple classification.And
The only formula computational methods of two large categaries Forecasting Methodology at this stage are written with code, emerging other method such as physical prospecting, simulation
It is intended only as supplementary means and is used with probing etc., a not planning for entirety.What is had in various methods can reach
Identical detects purpose, and reusable result not only wasting manpower and material resources can also influence precision of prediction, be brought to safety in production
Hidden danger.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the invention, without answering
In being considered as recognizing or imply in any form that the information structure has been the prior art well known to persons skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of method of testing of simple and reasonable two large categaries, the two large categaries
Method of testing belongs to a kind of efficient detection assembled scheme, after can on the whole determining caving zone and leaking crevice belt scope,
Defined boundaries using with targetedly detection method, the exact position in line of demarcation, improves precision of prediction in checking small range,
Avoid redundancy and the waste of technical resource.
To achieve the above object, the invention provides a kind of method of testing of two large categaries, comprise the following steps：First,
Predicting the outcome for two large categaries is calculated by two large categaries formula；Secondly, supervised using electromagnetic method, 3-D seismic method, microseism
Survey method or seismic CT method primarily determine that the scope of research area's two large categaries；Again, using water filling pressure measuring system, borehole television system
System or drilling fluid observation system further determine that the scope of fixed point two large categaries；Finally, by physical simulation or number
It is worth the scope of simplation verification two large categaries.
Preferably, in above-mentioned technical proposal, electromagnetic method includes：High Density Resistivity, EH4 magnetotelluric methods and transient electrical
Magnetic method.
Preferably, in above-mentioned technical proposal, electromagnetic method determines that water guide is broken by the change of mining overburden apparent resistivity
Band height.
Preferably, in above-mentioned technical proposal, geophysical prospecting method needs are with the result of calculation of two large categaries formula
Basic emphasis observes the change of critical zone.
Compared with prior art, the present invention has the advantages that：The method of testing of the two large categaries belongs to a kind of high
The detection assembled scheme of effect, after can on the whole determining caving zone and leaking crevice belt scope, using with targetedly visiting
Survey method defines boundaries, and the exact position in line of demarcation, improves precision of prediction in checking small range, it is to avoid technical resource it is superfluous
Remaining and waste.
Brief description of the drawings
Fig. 1 is the flow chart of the method for testing of two large categaries of the invention.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the invention is described in detail, it is to be understood that guarantor of the invention
Shield scope is not limited by specific embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " including " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other units
Part or other parts.
As shown in figure 1, the method for testing of the two large categaries according to the specific embodiment of the invention specifically includes following steps：
First, predicting the outcome for two large categaries is calculated by two large categaries formula；
Data are collected, the qualitative analysis of the geological conditions of engineering site is carried out, acquired results is arranged and is sorted out, and will correspondence
Parameter substitutes into two large categaries computing formula according to different condition, draws predicting the outcome for two large categaries.
Secondly, applied geophysics detection method primarily determines that the scope of research area's two large categaries；
Wherein, geophysical prospecting method includes：Electromagnetic method, 3-D seismic method, micro seismic monitoring method and seismic CT method, with
Emphasis observes the change of critical zone based on formula result of calculation.Electromagnetic method mainly by the change of mining overburden apparent resistivity come
Determine that water conducted zone highly, mainly includes：High Density Resistivity, EH4 magnetotelluric methods and transient electromagnetic method.Using the earth
During physical detecting method：Electromagnetic exploration has larger bulk effect, therefore more difficult to accurately determine water conducted zone critical
Summit, seismic CT method does not exist bulk effect, as long as wave detector distance lays reasonable, raising longitudinal frame, its detection knot
Fruit is more accurate than electromagnetic method.But the method is difficult to infer caving zone height and fractured situation on the whole.Transient electromagnetic method is anti-
Should be sensitive, exploring equipment is higher for the requirement of working environment, and source strong reaction is disturbed to less ten, it is impossible to large-scale extensive
Be applied to underground physical prospecting, but for the prediction of two large categaries, work well.Various methods set forth above respectively have excellent lacking
Point, it is different to different environmental condition adaptability, can be replaced according to different situations, range of application it is wider be transient electrical
Magnetic method.
Again, fixed point is further determined that using water filling pressure measuring system, borehole television system or drilling fluid observation system
The scope of two large categaries；
Wherein, drilling fluid observation system observation bore leaking liquid, pressure change with time, in hydrofracturing stress
Some Characteristic pressures points in measurement process, such as fracture pressure Pb, reopening pressure Pr, closing presure Ps and rock stress have
Close.Inevitable different in two band (caving zone and leaking crevice belt) bore leaking liquid, frac pressure can also be changed, and two are judged with this
Approximate range with height.The method test is with strong points, but the parameter of the selection that drills sometimes is not representative, it is all can not
The conclusion in region is drawn on the whole.This is the shortcoming of the method.
And borehole television system is that the waterproof camera probe of an automatic light source is put into earth drilling, can be live to drilling
The various features and slight change real-time monitored of middle geologic body, monitoring and record.Using by surface drilling, drilled by observing
The integrality of interior roof overlying strata rock stratum, the development characteristics of initial fissure, the crack hair by rock stratum in mining rock slit band
Educate width, connection situation, rock crushing situation and be caving sillar situation, most direct basis can be provided for Overburden Rock Failure point band, this
Method is most intuitively observation procedure.The authenticity of the substantially data of analysis overburden rock damage institute distribution.The method can
The method that detection accuracy is improved as a small range.Same the method test is with strong points, but the selection that drills sometimes parameter simultaneously
Without representativeness, all conclusions that can not on the whole draw region.This is the shortcoming of the method.
Finally, by physical simulation or the scope of Simulation two large categaries.
Physical simulation to refer to and carry out research supplement by indoor physical simulation, and the method is difficult simulated groundwater
Ambient conditions, as lithology migration rule inquire into compensation process, the result.Rear overlying strata can be adopted from overall situation observation
Changing Pattern determines two large categaries variation characteristic at different conditions.With intuitive, there is meaning to the extraction of rule
Justice.
Numerical simulation refers to that, by the setting of parameter, a kind of numerical software of selection is simulated such as FLAC, UDEC, PFC, RFPA
Simulated etc. overlying strata rule under the conditions of adopting is carried out.Advantage is the method easy to operate, it is easy to simulate the rule under different condition, is lacked
Point is to think that factor is too many, it is difficult to the conclusion Instructing manufacture for determining.
When the two band prediction in mining area is produced, researcher often can judge overlying strata by the region experience of itself
Destruction height, contrast equation result of calculation accomplishes to know what's what for the approximate range of parameter, reduces the model of physical prospecting and probing
Enclose, improve detection accuracy.In the predicting means of existing all Overburden Rock Failure maximum heights, based on code computing formula
Under guide for method, using means optimum organizations such as most emerging probing, physical prospecting and simulations, a set of more accurate detection is drawn
Method, is integrated into a set of forecasting system, is very meaningful and necessary.
To sum up, the method for testing of the two large categaries belongs to a kind of efficient detection assembled scheme, can determine on the whole
After caving zone and leaking crevice belt scope, defined boundaries using with targetedly detection method, demarcated in checking small range
The exact position of line, improves precision of prediction, it is to avoid the redundancy of technical resource and waste.
The foregoing description to specific illustrative embodiment of the invention be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that certain principles of the invention and its reality should
With so that those skilled in the art can realize and using a variety of exemplaries of the invention and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (4)
1. a kind of method of testing of two large categaries, it is characterised in that comprise the following steps：
First, predicting the outcome for two large categaries is calculated by two large categaries formula；
Secondly, research area's two large categaries are primarily determined that using electromagnetic method, 3-D seismic method, micro seismic monitoring method or seismic CT method
Scope；
Again, two bands of fixed point are further determined that using water filling pressure measuring system, borehole television system or drilling fluid observation system
The scope of height；
Finally, by physical simulation or the scope of Simulation two large categaries.
2. the method for testing of two large categaries according to claim 1, it is characterised in that the electromagnetic method includes：High density
Resistivity method, EH4 magnetotelluric methods and transient electromagnetic method.
3. the method for testing of two large categaries according to claim 2, it is characterised in that the electromagnetic method passes through mining overburden
The change of apparent resistivity determines the water conducted zone highly.
4. the method for testing of two large categaries according to claim 2, it is characterised in that the geophysical prospecting method is needed
Will based on the result of calculation of two large categaries formula emphasis observe critical zone change.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887657A (en) * | 1995-02-09 | 1999-03-30 | Baker Hughes Incorporated | Pressure test method for permanent downhole wells and apparatus therefore |
| CN202520304U (en) * | 2012-04-01 | 2012-11-07 | 贵州航天凯山石油仪器有限公司 | Integral structure of plug type pressure gauge double-channel sensor |
| CN103867188A (en) * | 2014-03-14 | 2014-06-18 | 山东石大油田技术服务股份有限公司 | Decision method used for profile control of oil-field water injection well |
-
2017
- 2017-01-18 CN CN201710033814.9A patent/CN106802435A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887657A (en) * | 1995-02-09 | 1999-03-30 | Baker Hughes Incorporated | Pressure test method for permanent downhole wells and apparatus therefore |
| CN202520304U (en) * | 2012-04-01 | 2012-11-07 | 贵州航天凯山石油仪器有限公司 | Integral structure of plug type pressure gauge double-channel sensor |
| CN103867188A (en) * | 2014-03-14 | 2014-06-18 | 山东石大油田技术服务股份有限公司 | Decision method used for profile control of oil-field water injection well |
Non-Patent Citations (4)
| Title |
|---|
| ZHIXIN WANG 等: "The Research on the Height of the ‘Two zones’ in Xiegou Mine Areas, Shanxi, China", 《2014 CHINA UNIVERSITY OF MINING AND TECHNOLOGY PRESS》 * |
| 国家煤矿安全监察局: "《煤矿防治水规定释义》", 31 December 2009, 中国矿业出版社 * |
| 樊运策 等: "《综合机械化放顶煤开采技术》", 30 April 2003, 煤炭工业出版社 * |
| 郭惟嘉 等: "《矿井特殊开采》", 30 September 2008, 煤炭工业出版社 * |
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Application publication date: 20170606 |