CN106251233A - A kind of contiguous seams group (group) two large categaries computational methods - Google Patents
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Abstract
The invention discloses a kind of contiguous seams group (group) two large categaries computational methods, comprising: for coal mining under water bodies, adopt the quantitative relationship between thickness and caving zone height three according to coal seam spacing, lower group of coal, coal seam group (group) is defined and classifies；In " three unders in coal mining code ", contiguous seams group (group) is comprehensively adopted thick formula and be there is serious loophole, it is considered to the Spatio-temporal factors of seam mining, proposes new comprehensively to adopt thick formula；Utilize existing single coal bed " two bands " highly estimating formula to calculate coal seam, contiguous seams group (group) top to adopt thick and target coal seam comprehensively to adopt " two bands " of thick calculating highly, and target coal seam final " two bands " height is two-part absolute altitude soprano.Using the inventive method, accurate can be predicted contiguous seams group (group) exploitation overburden rock damage, filled up three layers and the blank of above multiple seam " two bands " highly method for predicting, coal mining under water bodies near to colliery has practical value.
Description
Technical field
The present invention relates to Mineral Engineering field, particularly relate to a kind of contiguous seams group (group) two large categaries computational methods.
Background technology
Coal is the disposable energy of China's currently the most important ones, but the earth formation of the many orders of the many tectonic plates of China is led
Causing coal field geology complicated condition various, it is very universal that coal seam group (group) is positioned at the situation under water-bearing layer, such as Datun mining area, Xuzhou
Main 7, No. 8 coals adopted in the most eastern four exploiting fields of Yaoqiao coalmine are at outcrop area distance unconsolidated formation minimum coal petrography post only about 18m；Huai Beikuang
West air shaft 83 exploiting field, industry group Hai Zi colliery is main adopts 8 coals, 10 coals are faced with and mining up per limit bring up to-220m (rock pillar height is only
Have more than 19 rice) technical barrier.Staying and setting protection coal pillar is to realize the Major Technology of safety open under nearly water body, and leeding water rent
Band and caving zone (being called for short " two bands ") height are to stay to set the vital parameter of protection coal pillar.Therefore, the most anticipated closely coal
" two bands " destruction height under the conditions of layer group (group) repeated mining realizes efficient, safety, lasting exploit tool under water body for China
Significant.
But, Chinese scholars is not thorough for the research of contiguous seams group (group) " two bands " development height, " building
Thing, water body, railway and main roadway coal column stay and set and mining pressed coal code " (version in 2000) (hereinafter referred to as " three unders in coal mining is advised
Journey ") in serious loophole is existed for the method that contiguous seams group (group) overburden rock damage is anticipated." three unders in coal mining code " is attached
(2nd) article of record six " the coal and rock pillar for safety method for designing that nearly water body is mined " first segment (four) part is specified that: under
The caving zone of layer coal touches or completely into time in the range of day-coal, the leaking crevice belt maximum height of day-coal uses this layer
The working thickness of coal calculates, and the leaking crevice belt maximum height of lower floor's coal then should use the comprehensive mining thickness gauge of upper and lower layer coal
Calculate, take the leaking crevice belt maximum height that wherein absolute altitude soprano is two-layer coal.The comprehensive mining thickness of upper and lower layer coal can by with
Lower formula calculates.
In formula, M1Day-coal working thickness；M2Lower floor's coal mining thickness；h1-2Between upper and lower layer coal
Normal distance；y2Collapse height and the ratio adopting thickness of lower floor's coal.
2 leaks of existence defined above:
(1) thick M is comprehensively adoptedZComputing formula result of calculation under certain conditions is unreasonable
When organizing coal mining under contiguous seams group (group), comprehensively adopt thick MZResult of calculation should be greater than equal to will mine coal
Layer (hereafter referred to collectively as " target coal seam ") monolayer adopts thickness, thus ensures to be not less than by " two bands " development height of repeated mining overlying strata
The result that target coal seam calculates according to single coal bed exploitation, to guarantee safety.And M in " three unders in coal mining code "ZComputing formula
Due to " h1-2/y2" reason, at h1-2In the case of bigger than normal, result of calculation there will be MZIt is thick less than target coal seam monolayer is adopted
Situation, it is clear that be irrational.As a example by 2 layers of coal of exploitation, table 1 is the M that some mining area of China actual geology material computation obtainsZ
Result.
Thick M comprehensively adopted by table 1ZThe reasonability information slip of formula result of calculation
As shown in Table 1, when upper and lower two coal seam spacing h are less than normal, MZResult of calculation is reasonable or approximation is rational；And work as coal
Interlamellar spacing h is bigger than normal, and especially h is bigger than normal and during close to lower coal seam caving zone height, MZResult of calculation be and adopt thick M1Close,
Now, M is worked as1Less than M2Time more, MZResult of calculation less than normal, be irrational.Work as MZWhen result of calculation is less than normal, even if
According to the principle that " takes the leaking crevice belt maximum height that wherein absolute altitude soprano is two-layer coal " in " three unders in coal mining code ", calculate
To target coal seam height of the water conductive fracture zone be also less than normal, draw " two band " with the result of calculation of data in case two and grow shape
State, is shown in Fig. 1.
As seen from Figure 1, comprehensively to adopt thick MZ" two bands " aspect ratio calculated is to adopt thick M2Individually result of calculation is the least
Many, hence it is evident that unreasonable, and actual " two bands " development degree may be higher, contiguous seams " two bands " so can be caused to calculate
Less than normal, cause stoping safety to reduce.
(2) " three unders in coal mining code " is not given " two bands " computational methods of three layers of coal or more layers coal
It was verified that three layers or the exploitation of more layers contiguous seams group (group) is also the most universal, such as Jilin
Closely mutil-coal seam mining under certain mineral water body, need to estimate that " two bands " height in 4,5,6, No. 7 coal seams of mine is to stay water security of setting up defences
Coal petrography post.When three layers even more multilamellar seam mining stay set coal and rock pillar for safety time, field technician cannot be according to " three unders in coal mining
Code " operate, will face without according to the predicament that can depend on.When multilamellar contiguous seams group (group) is exploited, its " two bands " is the most pre-
Meter principle is close with two-layer coal, but due to its complexity, easily makes mistakes and cause result of calculation less than normal during calculating, thus
Cause potential safety hazard even accident, therefore, for " two bands " high computational of three layers of even more multilamellar contiguous seams group (group)
Method is badly in need of obtaining clearly.
For these reasons, the present invention, first, it is settled that contiguous seams group (group) concept and classification, then proposes new
Comprehensively adopt thick computing formula, finally propose the computational methods of contiguous seams group (group) " two bands " height, thus revise and perfect
Contiguous seams group (group) " two bands " height calculation method.
Summary of the invention
It is an object of the invention to provide a kind of contiguous seams group (group) two large categaries computational methods, it is possible to convenient, relatively
Calculate " two bands " in coal seam group (group) accurately highly, to ensure safety coal mining under water body.
It is an object of the invention to be realized by below scheme:
A kind of contiguous seams group (group) " two bands " height calculation method, the method includes:
(1) concept of contiguous seams group (group) and classification
Contiguous seams group (group) concept in the present invention is: according to upper and lower coal seam spacing h (between upper and lower coal seam vertical away from
From) adopt thick M and its caving zone height H with lower coal seamkQuantitative relationship between three, meets h≤HkOne group of inclination angle of condition is little
In 55 ° (nearly level, slow tiltedly, in tiltedly) coal seam.
Whether more than M again contiguous seams group (group) is divided into closer distance and point blank according to h:
A. closer distance: M < h≤Hk；B. point blank: 0≤h≤M.
Contiguous seams group (group) last layer coal is referred to as pushing up coal seam and (uses M1Represent), will exploit a certain below coal seam, top
Specific coal seam is that target coal seam (uses MiRepresent, i > 1), the partial parameters of contiguous seams group (group) of the present invention can as shown in Figure 2,
And Fig. 3 seen from its discriminant classification.
(2) contiguous seams group (group) comprehensively adopts thick MZComputational methods
1. closer distance
For the closer distance in contiguous seams group (group), target coal seam MiComprehensively adopt thick Mzi(i > 1) can be as the following formula
Calculate,
In formula, MZi-1 the i-th-1 layer coal comprehensively adopt thickness；yiThe caving height ratio of i-th layer of coal.
Can be obtained by fortran:
Because comprehensively adopting thick Mzi>Mi, so can obtain:
According to a large amount of actual measurement caving height ratio data, for security standpoint and formula convenience of calculation, yiValue takes 7, and will comprehensively adopt
Thick MZiValue takes greatly, can simplify formula and be:
2. point blank
For the point blank target coal seam in contiguous seams group (group), owing to coal seam spacing is the least, need to consider coal
After layer exploitation, overlying strata are the most fully compacted, and i.e. consider time factor.
Work as Mi(i > 1) seam mining and time stratum is the most fully compacted above it (not up to sufficient mining), MiCombining of coal seam
Conjunction is adopted thickness and is considered as MiCoal seam and coal seam, top adopt thick sum, i.e.
MZi=M1+M2+···+Mi=Σ Mi
(5)
Work as Mi-1M after significant period of time after (i > 1) seam miningiCoal seam is just exploited, then Mi-1Coal seam and on
After side's seam mining, overlying rock is fully compacted, and breaking roof is for MiAfter seam mining, " two bands " height is grown is to have necessarily
Inhibitory action, comprehensively adopt thick MziNeed on the basis of formula (5), carry out reduction, formula (4) now can be used to calculate.
It is to be noted that MiSeam mining and Mi-1The time interval of seam mining and the coal seam of coal seam group (group)
Numbering unrelated, it is considered to strata deformation deformation rule, time interval was distinguished with half a year, was the non-steady statue in stratum within half a year, and half
It is stratum steady statue more than year.
To sum up, contiguous seams group (group) is comprehensively adopted thick computational methods and is:
Closer distance: Mi＜ hi-1≤Hki
Point blank: 0≤hi-1≤Mi
(3) contiguous seams group (group) " two bands " height calculation method
Research shows, after seam mining, the influence factor of " two bands " development height mainly adopts thickness, stope width, inclines
Angle, adopt deep, top board type, recovery method, the time of adopting etc., but exploitation space and the time of adopting are its Dominated Factors.For maximum
Limit keep compatibility with the relevant regulations in " three unders in coal mining code ", contiguous seams group (group) of the present invention " two band " is highly
In computing formula, parameter is adopted thick M and adopts time interval (using half a year as separation) as only variable.Its calculating principle
As follows: when target coal seam is Top slice, select the correlation formula in " three unders in coal mining code " individually to calculate according to single coal bed；
When target coal seam is a certain coal seam, below goaf, according to the classification of contiguous seams group (group) and adopt time interval because of
Element, first chooses and comprehensively adopts thick formula calculating M accordinglyzi, then comprehensively to adopt thick Mzi" two bands " is calculated highly by single coal bed.
Contiguous seams group (group) of the present invention " two bands " highly estimating formula directly selects " three unders in coal mining code " and " colliery
Preventing and treating sailor's volume " in existing " two band " height formula, " three unders in coal mining code " and " mine geological hazards handbook " is if it does, then
Select according to formula up-to-date in latest edition and relevant regulations.Formula selected characteristic is: inclination angle is not more than the single coal bed of 55 °,
Overlying strata lithology be hard, in hard, weak and dead-soft, and to adopt thick 3m as demarcation line, coal seam is adopted the thick 3m (M≤3m) that is not more than and is chosen
2000 editions " three unders in coal mining code " annex six medium-thickness seam separate zone productions " two bands " highly estimating formulas, coal seam adopt thick more than 3m but
It is not more than 12m (3m < M≤12m) and chooses longwall top coal caving in " mine geological hazards handbook " " two bands " highly China Mining University (north
Capital) formula and Tangshan Mei Ke institute formula.Specific formula for calculation see table 2.
2 55 ° of table and with angle of declination single coal bed " two band " high computational formula (unit: m)
Note: M effectively adopts thickness；In computing formula ± number Xiang Weizhong error；For middle thickness and the weak overlying strata of high seam dead-soft
" two bands " situation that highly estimating formula rawness formula can depend on, can use weak overlying strata " two bands " high computational formula to replace；
" three unders in coal mining code " and " mine geological hazards handbook " is if it does, be as the criterion with relevant regulations in latest edition.
It is as follows that contiguous seams group (group) " two bands " the most specifically calculates process:
Top coal seam M1Directly according to choosing respective formula calculating " two bands " in table 2, highly, formula is as follows.
(Hk/li)1=Hk/li(M1) (7)
Target coal seam MiThick M is comprehensively adopted with ask forzi" two bands " is calculated highly, formula according to table 2 is chosen respective formula
As follows.
(Hk/li)i=Hk/li(Mzi) (8)
Target coal seam is comprehensively to adopt thick Mzi" two bands " that calculate is the most all to count with self top board for starting point, and closely
" two band " height of coal seam group (group) target coal seam is for coal seam, top and all adopted target coal seam comprehensively to adopt thick calculating " two bands " high
Absolute altitude soprano in degree, " two bands " height formula of target coal seam is as follows.
(Hk/li)imax=max [(Hk/li)1,(Hk/li)2-M1-h1,···,(Hk/li)i-Σ(Mi-1+hi-1)] (9)
Note: (Hk/li)imaxFrom top, seam roof is counted.
Below as a example by two-layer coal, Fig. 4 seen from its " two bands " highly absolute altitude.As seen from the figure, contiguous seams group
(group) exploits M2" two bands " height in coal seam is respectively (Hk)2max(Hli)2max。
In sum, Fig. 5 seen from the flow process of contiguous seams group (group) " two bands " height calculation method of the present invention.
Compared with existing recovery method, contiguous seams group (group) " two bands " height calculation method that the present invention proposes is right
Contiguous seams group (group) has carried out clearly classifying, for the deficiency of " three unders in coal mining code " Computational Methods, it is proposed that different
Under the conditions of comprehensively adopt the computing formula of thickness, and " two band " high computational process of coal seam group (group) more than two-layer coal, for
Contiguous seams group " two band " is determined more accurately highly have important practical significance, high for contiguous seams group " two bands "
Choosing of degree computational methods provides reference and foundation.
Accompanying drawing explanation
Fig. 1 case two " two bands " developmental morphology figure
Fig. 2 contiguous seams group (group) Parameter Map
Fig. 3 contiguous seams group (group) discriminant classification figure
Fig. 4 contiguous seams group (group) " two bands " highly value absolute altitude figure
Fig. 5 contiguous seams group (group) " two bands " height calculation method flow chart
Detailed description of the invention
It is that instantiation is to this below in conjunction with contiguous seams group (group) two-layer coal case one, case four and three layers of coal case
Invention elaborates, but the present invention is not limited in following citing.
Circular step of the present invention is as follows:
(1) case one calculates
According to data, certain coal coal seam, ore deposit 7Adopt thick 4.49m, 8 coal coal seamsAdopt thick 5.7m, between two coal seams are vertical
Away from for 12.5m, seam inclination is 21.6 °, and overlying strata lithology is hard in being, actual measurement 7,8 coal height of the water conductive fracture zone are 84.74m.
Judge the type of 7,8 coal coal seam groups:
Coal seam spacing h=12.5m,The caving zone height in 8 coal coal seamsCalculating by respective formula in table 1 can
?M > 12.5m, i.e.AndSo 8 coals belong to relatively low coverage in contiguous seams group (group)
From.
Owing to only surveying height of the water conductive fracture zone, make comparisons so the most only calculating height of the water conductive fracture zone.
The height of the water conductive fracture zone of coal seam 7, calculating top coal:
Coal seam, top " two bands " is highly directly thick by single coal bed calculating to adopt, and chooses respective formula in table 2, can be calculated:
The height of the water conductive fracture zone of calculating target coal seam 8 coal:
First calculate 8 coal coal seams comprehensively adopts thickness:
Choose contiguous seams group (group) closer distance and comprehensively adopt thick formulaCan be calculated:
Thick formula M is comprehensively adopted according to contiguous seams in " three unders in coal mining code "z1-2=M2+(M1–h1-2/ y), calculating can
:
Target coal seam 8 coal is comprehensively to adopt thick MZ8 coalThe height of the water conductive fracture zone calculated by respective formula in table 2 is:
The height of the water conductive fracture zone that target coal seam 8 coal comprehensively adopts thick calculating according to " three unders in coal mining code " is:
The height of the water conductive fracture zone label taking height soprano of target coal seam 8 coal:
(Hli)8 coal max=max [HLi7 coal,HLi8 coal-M7 coals-h]
=max [(55.79+11.49), (95.82+11.49)-4.49-12.5]
=(78.83+11.49) m
Height of the water conductive fracture zone label taking height soprano according to " three unders in coal mining code " target coal seam 8 coal:
(Hli)8 coal max=max [HLi7 coal,HLi8 coal-M7 coals-h]
=max [(55.79+11.49), (86.6+11.49)-4.49-12.5]
=(69.61+11.49) m
Compare with actual measurement height of the water conductive fracture zone, see table 3.
Table 37,8 coal seam group calculates height of the water conductive fracture zone and actual measurement contrast table
It is closer to measured value by the result of the inventive method calculating leaking crevice belt as can be seen from the above table, ties with reality
Fruit is more identical, and value of calculation is more than measured value, and value is the most safer relatively greatly.
(2) case four calculates
According to data, certain ore deposit 71 coal seam (M71) adopt thick 2.5m, 72 coal seam (M72) adopt thick 1.4m, two coal seam vertical intervals are
3m, seam inclination is 15 °, and overlying strata lithology is hard in being, surveys coal seam caving zone height 12.6m, and height of the water conductive fracture zone is
41.2m。
Judge the type of 71,72 coal seam groups:
Coal seam spacing h=3m, M72=1.4m, the caving zone height H in 72 coal seamsk72Can be calculated by respective formula in table 1
Hk72=(5.47+2.2) m > 3m, i.e. Hk72> h, and h > M72, so 72 coal seams belong to relatively low coverage in contiguous seams group (group)
From.
71, " two large categaries " in 72 coal seams calculates and can refer to the calculating process of case one height of the water conductive fracture zone in (1),
Its result of calculation, and see table 4 with the contrast of measured result.
Table 4 71,72 coal seam group calculates " two bands " height and actual measurement contrast table
As can be seen from the above table, by the present invention " two bands " height calculation method and " three unders in coal mining code " Computational Methods
Result is all close with measured value, illustrates that two kinds of computational methods are the most feasible.
The calculating comprehensively adopting thickness for 72 coal seams:
Choose contiguous seams group (group) closer distance and comprehensively adopt thick formulaCan be calculated:
Thick formula M is comprehensively adopted according to contiguous seams in " three unders in coal mining code "z1-2=M2+(M1–h1-2/ y), calculating can
:
Visible, when coal seam spacing h is less, the present invention comprehensively adopts thick formula value of calculation comprehensive with " three unders in coal mining code "
Adopt thick formula value of calculation very close to, therefore " two bands " height calculation results of two kinds of methods also close to.
By the comparison of computational results of case one with case four, when coal seam spacing h is less, the present invention comprehensively adopts thick calculating
In method the most relatively reasonable with " three unders in coal mining code " Computational Methods, along with the change of coal seam spacing is big, the inventive method is more closed
Reason.
(3) three layers of coal of contiguous seams group (group) " two bands " high computational
According to data, 4# coal seam, certain ore deposit (M4#) adopt thick 3.3m, 5# coal seam (M5#) adopt thick 4.7m, 6# coal seam (M6#) adopt thickness
4.1m, 4#, 5# coal seam spacing (h4-5) it is 6m, 5#, 6# coal seam spacing (h5-6) it is 3m, overlying strata lithology is hard in being, seam inclination 8 °.
Due to without actual measurement " two band " data, below the description computational methods of the present invention calculating process to three layers of coal " two bands " height,
As follows.
Judge the type of 4#, 5#, 6# coal seam group:
M4#=3.3m, M5#=4.7m, M6#=4.1m, h4-5=6m, h5-6=3m, owing to coal seam spacing is significantly less than lower coal
The caving zone height of layer, 4#, 5#, 6# coal seam belongs to contiguous seams group (group), and h4-5>M5#, h5-6<M6#, so 5# coal seam
Belonging to contiguous seams group (group) closer distance coal seam, 6# belongs to contiguous seams group (group) ultra close distance coal seam.
Calculate " two bands " in 4# coal seam, coal seam, top highly:
Coal seam, top " two bands " is highly directly thick by single coal bed calculating to adopt, and chooses respective formula in table 2, can be calculated:
Calculate " two bands " in target coal seam 5# coal seam highly:
First calculate 5# coal seam comprehensively adopts thickness, chooses closer distance and comprehensively adopts thick formulaCalculate
:
Choose respective formula in table 2, comprehensively to adopt thick Mz5#" two bands " height calculating 5# coal seam is:
" two bands " in 5# coal seam highly takes 4#, 5# coal seam " two bands " highly absolute altitude soprano, as follows:
(Hk)5#max=max [Hk4#,Hk5#-M4#-h4-5]
=max [(15.91+4.71), (32.53+4.71)-3.3-6]
=(23.23+4.71) m
(Hli)5#max=max [Hli4#,Hli5#-M4#-h4-5]
=max [(42.65+11.49), (84.05+11.49)-3.3-6]
=(74.75+11.49) m
So when, after 5# seam mining, the caving zone height of contiguous seams group (group) is (23.23+4.71) m, and water guide splits
Seamed belt height is (74.75+11.49) m.
Calculate " two bands " in target coal seam 6# coal seam highly:
First calculate 6# coal seam comprehensively adopts thickness, chooses point blank, adopts and comprehensively adopt thick formula outside time interval half a yearCalculate:
Choose respective formula in table 2, comprehensively to adopt thick Mz6#" two bands " height calculating 6# coal seam is:
" two bands " in 6# coal seam highly takes 4#, 5#, 6# coal seam " two bands " highly absolute altitude soprano, as follows:
(Hk)6#max=max [Hk4#,Hk5#-M4#-h4-5,Hk6#-M4#-h4-5-M5#-h5-6]
=max [(15.91+4.71), (32.53+4.71)-3.3-6, (44.91+4.71)-3.3-6-4.7-3]
=(27.91+4.71) m
(Hli)6#max=max [Hli4#,Hli5#-M4#-h4-5,Hli6#-M4#-h4-5-M5#-h5-6]
=max [(42.65+11.49), (84.05+11.49)-3.3-6, (113.01+11.49)-3.3-6-4.7-3]
=(96.01+11.49) m
So when, after 6# seam mining, the caving zone height of contiguous seams group (group) is (27.91+4.71) m, and water guide splits
Seamed belt height is (96.01+11.49) m.
In like manner, more than three layers of coal of contiguous seams group (group) " two bands " the most all can continue meter according to above-mentioned three layers of coal process
Calculating, the present invention has filled up the blank of China's contiguous seams group (group) multilamellar coal " two bands " height calculation method.
Claims (5)
1. contiguous seams group (group) two large categaries computational methods, content includes:
Nearly water body coal seam group (group) is classified, according to coal seam spacing h, coal seam thickness M and caving zone height HkLong distance can be divided into
From coal seam group (group), closer distance coal seam group (group) and ultra close distance coal seam group (group), rear both are collectively referred to as contiguous seams group
(group)；For " two bands " after the top seam mining in contiguous seams group (group) highly, " two bands " is selected according to single coal bed
Highly estimating formula calculates；After exploiting for contiguous seams group (group) target coal seam, " two bands " development height, first counts
Calculate it and comprehensively adopt thick MZ, then utilize and comprehensively adopt thick MZAs a result, calculate " two bands " highly in conjunction with " two bands " highly estimating formula,
After take the exploitation of all mining coal seams after absolute altitude soprano of " two band " height exploit as contiguous seams group (group) target coal seam
" two band " development height.
Method the most according to claim 1, for the classification of contiguous seams group (group), is characterized by: inclination angle is not more than
55 ° (nearly level, slow tiltedly, in tiltedly) coal seam, and according to upper and lower coal seam spacing h (vertical dimension between upper and lower coal seam) and lower group of coal
Adopt thick M and its caving zone height HkQuantitative relationship between three, determines the principle of classification of contiguous seams group (group).
Contiguous seams group (group): h≤Hk
Whether closer distance and point blank it is divided into again more than M according to h:
A. closer distance: M ＜ h≤HkB. point blank: 0≤h≤M.
Coal seam, top in contiguous seams group (group) the most according to claim 1 and 2 and target coal seam, it is characterised in that near
The coal seam that in distance coal seam group (group), the absolute altitude of plan exploitation is the highest is referred to as pushing up coal seam, and the coal seam will exploited below Top slice is referred to as
Target coal seam；In this coal seam group (group), above coal seam, top, can there is unquarried coal seam (no matter can adopt and maybe can not adopt, be lower same)
One or more layers, but do not exist mining coal seam goaf one or more layers；Certainly mining coal seam goaf is had above target coal seam
One layer (i.e. pushing up coal seam goaf) or multilamellar, it is also possible to include solid coal seam one or more layers.
Target coal seam the most according to claim 1 comprehensively adopt thick MZComputing formula, it is characterised in that: according to closely coal
Layer group (group) classification and adopt time interval (with half a year for counting), exists 3 and comprehensively adopts thick MZComputing formula is as follows:
Closer distance: M ＜ h≤Hk
Point blank: 0≤h≤M
" two bands " the most according to claim 1 highly estimating formula, it is characterised in that formula is only limitted to " three unders in coal mining rule
Journey ", " two bands " exploited for thickness thin, middle and high seam single coal bed that go out given in " mine geological hazards handbook " highly public
Formula, is not related to the correlation formula that other documents are mentioned." three unders in coal mining code " and " mine geological hazards handbook " is if it does, then press
Corresponding formula is selected according to relevant regulations in latest edition.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315202A (en) * | 2017-05-10 | 2017-11-03 | 山东科技大学 | A kind of " two bands " Forecasting Methodology based on black box theory |
| CN109139013A (en) * | 2018-08-24 | 2019-01-04 | 大同煤矿集团有限责任公司 | Ultra close distance coal seam exploits country rock roadway layout method |
| CN114877847A (en) * | 2022-06-07 | 2022-08-09 | 河南理工大学 | Short-distance coal seam group overlying rock development height measuring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105808818A (en) * | 2016-01-28 | 2016-07-27 | 中煤科工集团唐山研究院有限公司 | Method for evaluating foundation stability of coal mining subsidence area |
| CN105804787A (en) * | 2016-03-28 | 2016-07-27 | 西南石油大学 | Method for measuring fracture development height of coal covering rock on stope face of coal mine |
-
2016
- 2016-08-17 CN CN201610679487.XA patent/CN106251233A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105808818A (en) * | 2016-01-28 | 2016-07-27 | 中煤科工集团唐山研究院有限公司 | Method for evaluating foundation stability of coal mining subsidence area |
| CN105804787A (en) * | 2016-03-28 | 2016-07-27 | 西南石油大学 | Method for measuring fracture development height of coal covering rock on stope face of coal mine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315202A (en) * | 2017-05-10 | 2017-11-03 | 山东科技大学 | A kind of " two bands " Forecasting Methodology based on black box theory |
| CN109139013A (en) * | 2018-08-24 | 2019-01-04 | 大同煤矿集团有限责任公司 | Ultra close distance coal seam exploits country rock roadway layout method |
| CN114877847A (en) * | 2022-06-07 | 2022-08-09 | 河南理工大学 | Short-distance coal seam group overlying rock development height measuring device |
| CN114877847B (en) * | 2022-06-07 | 2023-04-28 | 河南理工大学 | Close-range coal seam group overlying strata development height measuring device |
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