CN106224002B - A kind of investigating method of coal mine gob water accumulating volume - Google Patents
A kind of investigating method of coal mine gob water accumulating volume Download PDFInfo
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- CN106224002B CN106224002B CN201610635490.1A CN201610635490A CN106224002B CN 106224002 B CN106224002 B CN 106224002B CN 201610635490 A CN201610635490 A CN 201610635490A CN 106224002 B CN106224002 B CN 106224002B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000003245 coal Substances 0.000 title claims abstract description 22
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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Abstract
The invention discloses a kind of investigating method of coal mine gob water accumulating volume, measurement water in gob area strike length L, seam inclination α；Then ponding head height H is measured1And H2, lower gate road width D；The ponding space in goaf is considered as triangular platform model, then according to formula：The present invention takes into full account the water accumulating volume in driving lane, it is compared by detecting with actual waterdrainage amount, the detection method of the present invention meets the lithology combination feature for thanking to 13 1 roof of bridge ore deposit, it is estimated to 13 1 coal seam goaf water accumulating volume of mine from now on that there is preferable guiding effect, mine safety can greatly be improved, it is ensured that efficiently production.
Description
Technical field
The present invention relates to a kind of Forecasting Methodologies of the old dead zone water accumulating volume in colliery more particularly to a kind of coal mine gob to accumulate
The investigating method of water.
Background technology
Water damage accident accounts for the 30% of coal mine flood accident caused by old dead zone ponding is burst out during coal production, although
Caused by flood well accident few, but often result in working face and stop production or human casualty accident, to Safety of Coal Mine Production and economical imitate
Benefit causes large effect.Correctly estimated old dead zone water accumulating volume is the precondition that old empty water is put in safety of coal mines spy, by for many years
, to water in gob area investigation, analysis, research, to have summed up old under the conditions of the low-angle dip rock stratum of a set of suitable Huainan field with "nine squares" old area
Dead zone water accumulating volume quantitative evaluation method, i.e. ponding space law provide technical guarantee for the prevention of field with "nine squares" old district old sky water.But
Since Huainan field with "nine squares" old area and new district geology, hydrological geological conditions differ greatly, and ponding sky law theory calculation formula is endless
The uncertainty of whole property and part calculating parameter causes this kind of method real with scene in estimated field with "nine squares" new district water in gob area amount
Border situation gap is larger so that leting speeper work clashes sometimes with adopting, digging face take-over plan, affects mine indirectly
Safe efficient production.
At present, each mine is mainly by ponding space law come estimated water in gob area amount.Han Biwu, red legend, Sun Xingping, always
Dead zone water-filling quantitative assessment [J] Huainan institute of Vocationl Technical College reports, 2002,2 (3):78-82.Wu Fahong, the prediction of goaf water
With preventing [J] colliery engineerings, 2004,23 (4):59.Ponding space law is that old dead zone ponding space is converted into triangular pyramid number
Model is learned, volume calculation formula is：
Q is water in gob area amount m3；L moves towards for water in gob area
Length m；H is water in gob area head height m；K is goaf water filling coefficient；α is seam inclination °, as shown in Figure 1.
Ponding space law fully takes into account old dead zone ponding state, and different ponding is divided according to different ponding spaces
Section, the water accumulating volume of estimated each section of segmentation, makes every effort to make budget result more realistic.
Ponding space law combines water filling coefficient K with Roof rock feature organic phase, and the parameter of calculation formula is made to choose more adduction
Reason.
The old mining area in Huainan a large amount of are it was verified that ponding space law is located at caving zone (＜ 5 for estimated ponding head height
Times mining height) in the range of water, counting accuracy is up to 90%.
But this formula itself is defective, only calculates the ponding space of part, does not account for the ponding of digging laneway
Amount, does not obtain complete water accumulating volume, this has resulted in the very big hidden danger of old dead zone.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of observing and controlling sides of coal mine gob water accumulating volume
Method is realized and the water accumulating volume in goaf is accurately calculated.
The present invention is achieved by the following technical solutions, and the present invention comprises the following steps：
(1) water in gob area strike length L, seam inclination α are measured；
(2) and then measurement ponding head height H1And H2, lower gate road width D；
(3) the ponding space in goaf is considered as triangular platform model, then according to formula：
Obtain the ponding total amount Q in goaf.
In the step (3), the water accumulating volume in goaf：
K is goaf water-filling system
Number, K0 be digging laneway water filling coefficient, H1And H2Respectively water in gob area beginning and end head height.
One of preferred embodiment as the present invention, the goaf water filling coefficient K and digging laneway water filling coefficient K0Wherein
It is at least one to be more than 0.3.
One of preferred embodiment as the present invention, the goaf water filling coefficient K are 0.04, digging laneway water filling coefficient K0
For 0.45.
The present invention has the following advantages compared with prior art：The present invention takes into full account the water accumulating volume in driving lane, passes through detection
It is compared with actual waterdrainage amount, detection method of the invention meets the lithology combination feature for thanking to bridge ore deposit 13-1 roofs, to from now on
Mine 13-1 coal seam goaf water accumulating volumes are estimated with preferable guiding effect, can greatly improve mine safety, really
Protect efficiently production.
Description of the drawings
Fig. 1 is the schematic diagram of ponding space law water computational methods in the prior art；
Fig. 2 is that the actual goaf water amount of the present invention calculates schematic diagram；
Fig. 3 is that the actual goaf water amount of the present invention calculates schematic diagram.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Reference examples
The water accumulating volume computational methods of this reference examples use this formula：
Introduce old dead zone water filling coefficient K, be because old dead zone ponding substantially in the range of caving zone, entire ponding space by
The volume of water is formed with volume two parts of roof collapse rock, i.e., the ratio between actual ponding volume and ponding spatial volume are (i.e. empty
Gap rate), between general value 0.15~0.3, as shown in table 1.
Water filling coefficient K and coal roof lithologic relation table in 1 reference examples of table
Note：M is thick for mining height or coal, m.
But in estimated old dead zone water accumulating volume, to prevent that water is estimated too small, usual water filling coefficient K is maximized 0.3,
This is not substantially inconsistent with actual conditions.Existing analysis is with research it is also shown that water in gob area values of factor K not only has with Roof rock feature
Close, and with the close associations such as coal-mining method, the rate of extraction, seam inclination, the broken swollen degree of rock and the interval time after adopting.Such as
Fruit is by the digging laneway water filling coefficient K of this reference examples0Value not yet determines at present, is simply considered that K0Value is equal to K values, hence it is evident that with reality
Border situation is not inconsistent.
In this reference examples, in ponding space law calculation formula, water in gob area head height H is defaulted as being one fixed
Value, the result calculated are only the static water accumulating volume in goaf.But in real process, old sky water head height H is visited in every wheel
All in dynamic change after discharging water, for example, the supply of gob caving band inner periphery rock gap water, the supply of water from sandstone roof,
The supply of grouting water can all cause head height H to rise.Therefore, the sight of water in gob area hydraulic pressure should be strengthened when leting speeper works
It surveys.
Embodiment 1
As shown in Figures 2 and 3, Fig. 2 is to illustrate that ponding space law in the prior art only calculates in Fig. 2 the part water of " 1. "
Amount, and the water (water of parallelogram) in figure of letting it pass less " 2. "；Fig. 3 is found by calculating to deduce, and is calculated less in Fig. 2
" 2. " water be equal in fact in Fig. 3 tunnel lane water accumulating volume " 2. " (water of rectangle).Fig. 2 and Fig. 3 are actually same
One goaf.
Parallelogram area is " 2. in Fig. 2It is left", S is 2.It is left=(H1/ sin α) * (D*sin α)=H1* the rectangular area of D, Fig. 3
“②It is right", S is 2.It is right=H1* D is equal, wherein, H1、H2It represents ponding head height m, D and represents the span length m of lower crossheading 1, K is represented
Goaf water filling coefficient, K0Represent digging laneway water filling coefficient, the ponding wire tag in Fig. 2 and Fig. 3 is 2.The product of the present embodiment
Water computational methods are：
Embodiment 1 and reference examples are respectively applied to crossheading on 1331 (3), determine optimal goaf water filling coefficient K, is dug
Into tunnel water filling coefficient K0。
Crossheading is west from eastern two C group district rises on 1331 (3), to the east of F22 tomographies, upper 1321 (3) working face of stage in
Back production on November 28 in 2013 finishes.Crossheading is arranged parallel to crossheading under 1321 (3) on 1331 (3), clean coal column 7.2m.Working face
Interior 13-1 coal seams thickness 0.2m~6.5m, average coal thickness 5.3m, 160 °~215 ° of attitude of coal, 11 °~14 ° of ∠, mean obliquity are
12 °, immediate roof is mud stone, Sandy Silt and 13-2 coal compound roofs, and old top is medium-fine sand rock, and immediate bottom is mud stone.
There are 1 ponding section, ponding section strike length 508.9m, maximum head height H=in 1321 (3) work face goaf
6.6m, maximum hydraulic pressure are 0.066MPa, are 4207.3m using the estimated 1321 total water accumulating volumes in (3) goaf of the formula of reference examples3,
Wherein water filling coefficient K is maximized 0.3.
Crossheading designs four-wheel leting speeper altogether on 1331 (3), often takes turns estimated ponding segment length, the maximum head height of leting speeper
It is shown in Table 2 with water accumulating volume.From table 2 it can be seen that in ponding segment length, maximum head height and water filling coefficient (K, K0) all phases
With in the case of, often wheel (in addition to the first round) waterdrainage amount that the method for embodiment 1 calculates is than the putting of calculating of method of reference examples
Big 335.7~the 1628.0m of water3, add up the big 2326.7m of waterdrainage amount3。
Crossheading often takes turns the estimated situation of leting speeper on table 2 1331 (3)
Note：Old dead zone water filling coefficient K and digging laneway water filling coefficient K in reference examples and embodiment 10It is equal to 0.3.
Preceding three-wheel leting speeper result and analysis
On 1331 (3) before crossheading the work of three-wheel leting speeper since 7 days October in 2014 to 21 end of day November in 2014,
It is accumulative to release water 3975.3m3, often take turns actual waterdrainage amount and maximum head be shown in Table 3.From table 3 it can be seen that when water-filling system
Number K, K0When taking 0.3 simultaneously, the third round waterdrainage amount that the method for reference examples and embodiment 1 calculates is all smaller than reality waterdrainage amount, this
Illustrate K, K00.3, and K, K can not possibly be taken simultaneously0Wherein at least one is more than 0.3.Pass through the actual waterdrainage amount of second and third wheel
Relation, which is established, between estimated waterdrainage amount following establishes linear equation：
11623.33K+13030.00K0=3218.60
6186.67K+580.00K0=756.70
Simultaneous calculating acquires K=0.04, K0=0.45.
From result of calculation as can be seen that tunnel water filling coefficient K0=0.45 is bigger by 11.25 than goaf water filling coefficient K=0.04
Times, illustrate the voidage of rock in tunnel much larger than the voidage of rock in goaf, this is very identical with actual conditions.
Three-wheel leting speeper situation before crossheading on table 3 1331 (3)
By K=0.04, K0=0.45 brings into reference examples and embodiment 1 and calculates fourth round waterdrainage amount, is shown in Table 4.
Crossheading fourth round leting speeper situation on table 4 1331 (3)
The work of crossheading fourth round leting speeper is tired out to 11 end of day January in 2015 since 9 days January in 2015 on 1331 (3)
Meter releases water 534m3(being shown in Table 4).The method calculated value of this result and embodiment 1 is sufficiently close to, and is illustrated K=0.04, is met
Thank to the lithology combination feature of bridge ore deposit 13-1 roofs, it is estimated to mine 13-1 coal seam goafs water accumulating volume from now on preferable
Directiveness effect.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of investigating method of coal mine gob water accumulating volume, which is characterized in that comprise the following steps：
(1) water in gob area strike length L, seam inclination α are measured；
(2) and then measurement ponding head height H1And H2, lower gate road width D；
(3) the ponding space in goaf is considered as triangular platform model, then according to formulaThe ponding total amount Q in goaf is obtained,H1And H2Respectively water in gob area
Beginning and end head height, K0For digging laneway water filling coefficient, K is goaf water filling coefficient.
A kind of 2. investigating method of coal mine gob water accumulating volume according to claim 1, which is characterized in that the goaf
Water filling coefficient K and digging laneway water filling coefficient K0Wherein at least one is more than 0.3.
A kind of 3. investigating method of coal mine gob water accumulating volume according to claim 1, which is characterized in that the goaf
Water filling coefficient K is 0.04, digging laneway water filling coefficient K0For 0.45.
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| CN109141573B (en) * | 2018-07-30 | 2019-10-15 | 太原理工大学 | Water level warning algorithm after a kind of water bursting in mine |
| CN111237015A (en) * | 2020-01-10 | 2020-06-05 | 陕西有色榆林煤业有限公司 | Prediction method for goaf water accumulation area of long-wall fully mechanized mining face |
| CN112763020A (en) * | 2020-12-17 | 2021-05-07 | 华能煤炭技术研究有限公司 | Water amount monitoring method and device for inclined coal seam goaf and electronic equipment |
| CN113626991B (en) * | 2021-07-20 | 2024-05-14 | 中国矿业大学 | Method for calculating hydrothermal storage potential of abandoned flooded coal mine |
| CN116304490A (en) * | 2023-03-24 | 2023-06-23 | 内蒙古科技大学 | Mine empty water static ponding amount estimation method based on three-dimensional modeling |
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| CN102520450A (en) * | 2011-11-16 | 2012-06-27 | 中国科学院地质与地球物理研究所 | Coal mine full-water goaf detection method |
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| CN103670510A (en) * | 2013-12-31 | 2014-03-26 | 大同煤矿集团有限责任公司 | Method for draining ponding in goaf by laneway casing pipe method |
| CN104698507A (en) * | 2015-04-02 | 2015-06-10 | 淮南矿业(集团)有限责任公司 | Quantitative method for water resource effect in coal mining subsidence area |
| CN105388529A (en) * | 2015-12-15 | 2016-03-09 | 辽宁工程技术大学 | Unknown goaf waterlogged area detection method based on direct-current detection |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520450A (en) * | 2011-11-16 | 2012-06-27 | 中国科学院地质与地球物理研究所 | Coal mine full-water goaf detection method |
| CN102565863A (en) * | 2011-12-30 | 2012-07-11 | 大同煤矿集团有限责任公司 | DC detection method in mined-out water accumulated area of mine |
| CN103670510A (en) * | 2013-12-31 | 2014-03-26 | 大同煤矿集团有限责任公司 | Method for draining ponding in goaf by laneway casing pipe method |
| CN104698507A (en) * | 2015-04-02 | 2015-06-10 | 淮南矿业(集团)有限责任公司 | Quantitative method for water resource effect in coal mining subsidence area |
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