CN109377042A - A kind of roof Spray water way evaluation method - Google Patents
A kind of roof Spray water way evaluation method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 238000011156 evaluation Methods 0.000 title claims abstract description 133
- 239000007921 spray Substances 0.000 title claims abstract description 19
- 238000013316 zoning Methods 0.000 claims abstract description 37
- 239000003245 coal Substances 0.000 claims abstract description 36
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- 239000010410 layer Substances 0.000 claims description 20
- 238000004458 analytical method Methods 0.000 claims description 7
- 230000008595 infiltration Effects 0.000 claims description 7
- 238000001764 infiltration Methods 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 4
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- 238000003325 tomography Methods 0.000 description 3
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- 238000005553 drilling Methods 0.000 description 2
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- 230000023753 dehiscence Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Abstract
The present invention relates to a kind of roof Spray water way evaluation methods, comprising the following steps: sets at least one hazard assessment domain, obtains the characteristic parameter in coal seam, filled water bearing strata；Establish the quiet water yield distributed model of unit area, filled water bearing strata floor level distributed model, height of the water conductive fracture zone absolute altitude distributed model, roof absolute altitude distributed model and water-filling intensity distribution model；Conducting model is established, carries out spatial analysis using conducting model, the quiet water yield distributed model of unit and water-filling intensity distribution model, establishes the Risk Assessments model in the evaluation domain；Risk zoning evaluation is carried out to the zoning unit in the Risk Assessments model.Method for evaluating hazard of the invention provides feasible technical solution for coal mine roof plate risk quantitative assessment, coal seam is subjected to zoning and assessment, and integrate evaluation result, the danger classes in coal output layer evaluation domain is intuitively reacted, Coal Mine Design is given and safety in production provides data and supports.
Description
Technical field
The present invention relates to mine hydrogeology technical field more particularly to a kind of roof Spray water way evaluation sides
Method.
Background technique
Roof water damage problem is to perplex the main flood of China's coal mines safety in production and Coal Industry Sustainable Development
One of, in particular with mining depth be gradually increased with the following group coal back production, top plate emit dehiscence furrow it is logical on cover water content and cause
Top plate gushes the generation of (prominent) water disaster or the example of deterioration working surface production environment is increasing.
Roof hazard assessment main method has " three figure double prediction methods " at present and " leaking crevice belt is maximum high
Degree " etc., the Main Factors of evaluation are watery (drilling specific capacity, L/ (ms)), and only qualitative evaluation, cannot quantitatively comment
Valence.
Summary of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of roof Spray water way evaluation methods, with solution
At least one technical problem in the prior art.
In order to achieve the above objectives, the technical solution of the embodiment of the present invention is achieved in that a kind of roof gushing water danger
Dangerous evaluation method, comprising the following steps:
Step 1 sets at least one hazard assessment domain, obtains coal seam, the characteristic parameter of filled water bearing strata evaluates domain；
Step 2 establishes the quiet water yield distributed model of unit, filled water bearing strata floor level distributed model, leaking crevice belt
Height absolute altitude distributed model, roof absolute altitude distributed model and water-filling intensity distribution model generate the distribution of other water filling channels
Model, and switch it on value and be assigned a value of -1；
Step 3 establishes conducting model, utilizes conducting model, the quiet water yield distributed model of unit and water-filling intensity distribution mould
Type carries out spatial analysis, establishes the Risk Assessments model in the evaluation domain；
Step 4 carries out risk zoning evaluation to the zoning unit in the Risk Assessments model.
Based on the above technical solution, the present invention can also be improved as follows:
Further, the risk zoning evaluation in the step 4 includes the following steps:
Step 4.1, the first subzone is carried out to danger area with conduction value；
Step 4.2, the second subzone is carried out to danger area with the quiet water yield of unit；
Step 4.3, third subzone is carried out to danger area with water-filling intensity.
Further, the step 4.1 specifically comprises the following steps:
Conduction value W, protective layer thickness b, zoning unit and evaluation of estimate are provided；
As W≤0, the zoning unit is assigned a value of danger area, institute's evaluation values are assigned a value of " danger "；
As 0≤W≤b, the zoning unit is assigned a value of relative risk area, institute's evaluation values are assigned a value of " opposite "；
As W >=b, the zoning unit is assigned a value of safety zone, institute's evaluation values are assigned a value of " safety ".
Further, the step 4.2 specifically comprises the following steps:
The critical value Q that the quiet water yield Q of the unit and the quiet water yield Q of the unit are sequentially increased is provided1、Q2And Q3；
If evaluation of estimate is " danger ",
As Q≤Q1When, the zoning unit is assigned a value of dangerous cell, institute's evaluation values are assigned a value of " small "；
Work as Q1< Q≤Q2When, the zoning unit is assigned a value of dangerous medium area, institute's evaluation values are assigned a value of " in "；
Work as Q2< Q≤Q3When, the zoning unit is assigned a value of dangerous great Qu, institute's evaluation values are assigned a value of " big "；
Work as Q3When < Q, the zoning unit is assigned a value of dangerous very big area, institute's evaluation values are assigned a value of " pole ".
Further, the step 4.3 specifically comprises the following steps:
There is provided the water-filling intensity U and critical value U that the water-filling intensity is sequentially increased1、U2And U3；
According to the assignment of institute's evaluation values, the water-filling intensity U and critical value U are compared1、U2And U3, to institute's evaluation values into
The secondary assignment of row:
If evaluation of estimate is " small ",
Work as U1< Q≤U2When, secondary assignment institute's evaluation values be " in "；
Work as U2< Q≤U3When, secondary assignment institute's evaluation values are " big "；
Work as U3When < Q, secondary assignment institute's evaluation values are " pole "；
If evaluation of estimate be " in ",
Work as U2< U≤U3When, secondary assignment institute's evaluation values are " big "；
Work as U3When < U, secondary assignment institute's evaluation values are " pole "；
If evaluation of estimate is " big ",
Work as U3When < U, secondary assignment institute's evaluation values are " pole ".
Further, the characteristic parameter include the quiet water yield of unit area, water-filling intensity, filled water bearing strata floor level,
Coal seam height of the water conductive fracture zone absolute altitude, roof absolute altitude and other water filling channels.
Further, the water-filling intensity selects at least one of infiltration coefficient, enriched water coefficient and specific capacity.
Further, it is described establish height of the water conductive fracture zone absolute altitude distributed model specifically includes the following steps:
S1, roof absolute altitude model is established by spacial analytical method according to roof absolute altitude；
S2, height of the water conductive fracture zone model is established by spacial analytical method according to the height of the water conductive fracture zone；
S3, the method according to the roof absolute altitude model and the height of the water conductive fracture zone model Jing Guo spatial analysis
The height of the water conductive fracture zone absolute altitude distributed model is obtained, by the sum of roof absolute altitude and height of the water conductive fracture zone assignment to leading
Water crack seamed belt height absolute altitude.
Further, model is connected in the foundation in the step 3 specifically: by the filled water bearing strata floor level and water guide
The difference assignment of slit band height absolute altitude is into conduction value, using the method for spatial analysis, establishes leaking crevice belt according to conduction value
Filled water bearing strata pattern type is connected, filled water bearing strata pattern type is connected with the leaking crevice belt for other water filling channel distributed models
Spatial analysis is carried out, conducting model is established.
Further, when in the evaluation domain including two or more filled water bearing stratas, each layer water-filling
Hazard assessment repeating said steps 2, step 3 and the step 4 in water-bearing layer.
In conclusion adopting the beneficial effects of the present invention are: the present invention analyzes coal seam danger using quantitative approach
With Spatial Data Analysis, using the quiet water yield of unit area and water-filling intensity as evaluation points, the quiet water yield of unit of account area
With the spatial distribution of water-filling intensity, basic data is provided to evaluate the influence degree of safety of coal mines, ensures Coal Mine Design and safety
Production, provides feasible technical solution for coal mine roof plate risk quantitative assessment, coal seam is carried out zoning and assessment, and
Evaluation result is integrated, the danger classes in coal output layer evaluation domain is intuitively reacted, Coal Mine Design is given and safety in production provides
Data are supported.
Detailed description of the invention
Fig. 1 is roof Spray water way evaluation rubric figure provided in an embodiment of the present invention；
Fig. 2 is that certain mine provided in an embodiment of the present invention reconnoitres pore size distribution figure.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Roof Spray water way evaluation method of the invention, comprising the following steps: step 1 sets at least one danger
Dangerous evaluation domain, obtains the characteristic parameter of the filled water bearing strata；Step 2 establishes the quiet water yield distributed model of unit area, fills
It water aquifer floor elevation absolute altitude distributed model, height of the water conductive fracture zone absolute altitude distributed model, roof absolute altitude distributed model and fills
Water intensity distribution model generates other water filling channel distributed models；Step 3 establishes conducting model, utilizes conducting model, unit
Quiet water yield distributed model and water-filling intensity distribution model carry out spatial analysis, establish the Risk Assessments model in the evaluation domain；
Step 4 carries out risk zoning evaluation to the zoning unit in the Risk Assessments model.
Compared with the existing technology, roof Spray water way evaluation method of the invention endangers to coal seam using quantitative approach
It is dangerous to be analyzed, it is calculated using Spatial Data Analysis using the quiet water yield of unit area and water-filling intensity as evaluation points
The spatial distribution of unit area quiet water yield and water-filling intensity provides basic data to evaluate the influence degree of safety of coal mines, protects
Hinder Coal Mine Design and safety in production, provides feasible technical solution for coal mine roof plate risk quantitative assessment, coal seam is carried out
Zoning and assessment, and evaluation result is integrated, the dangerous situation in coal output layer evaluation domain is intuitively reacted, coal mine is given and sets
Meter and safety in production provide data and support, have captured the problem that roof hazard assessment is unable to quantitative assessment.
Specifically, step 1 specifically: setting includes the evaluation domain of at least one risk, obtains the feature in the evaluation domain
Parameter includes quiet water yield, water-filling intensity, filled water bearing strata floor level, coal seam height of the water conductive fracture zone absolute altitude, coal seam top
The exploration data such as plate absolute altitude and water filling channel additional parameter.Wherein, the water-filling intensity includes infiltration coefficient, enriched water coefficient and list
At least one of position water yield, that is to say, that at least one of infiltration coefficient, enriched water coefficient and specific capacity is selected to make
For evaluation points；Other described water filling channels include tomography, close bad drilling etc..
In some embodiments of the invention, spatial analysis platform when carrying out spatial analysis selects MAPGIS series,
ARCGIS series etc..Water-filling intensity distribution model is established in step 2, water-filling intensity selects infiltration coefficient, richness according to data
One in water coefficient and specific capacity.Other water filling channel distributed models are generated according to other water filling channels, and are contained
Water layer conduction value is assigned a value of -1.When establishing certain coal seam height of the water conductive fracture zone absolute altitude distributed model, height of the water conductive fracture zone can
To be obtained by empirical equation or actual measurement, height of the water conductive fracture zone model and roof absolute altitude model carry out spatial analysis, i.e.,
Coal seam height of the water conductive fracture zone absolute altitude distributed model can be obtained.
In step 3, pass through coal seam height of the water conductive fracture zone absolute altitude distributed model and each top plate filled water bearing strata bottom plate mark
High distributed model establishes coal seam leaking crevice belt conducting filled water bearing strata type.It is subtracted with each top plate filled water bearing strata floor level
Height of the water conductive fracture zone absolute altitude is assigned to corresponding water-bearing layer conduction value.Filled water bearing strata model is connected to coal seam leaking crevice belt
Spatial analysis is carried out with other water filling channel distributed models, establishes conducting model.Water-filling is connected by coal seam leaking crevice belt to contain
Water layer model and the quiet water yield distributed model of filled water bearing strata unit, filled water bearing strata rate water intensity distribution model carry out space point
Risk-Assessment Model is established in analysis.
In some embodiments of the invention, the risk zoning evaluation in the step 4 includes the following steps:
Step 4.1, the first subzone is carried out to danger area with conduction value, conduction value W, protective layer thickness b, subregion list is provided
Member and evaluation of estimate；As W≤0, the zoning unit is assigned a value of danger area, institute's evaluation values are assigned a value of " danger "；When 0≤
When W≤b, the zoning unit is assigned a value of relative risk area, institute's evaluation values are assigned a value of " opposite "；As W >=b, by institute
It states zoning unit and is assigned a value of safety zone, institute's evaluation values are assigned a value of " safety ".
Step 4.2, with the quiet water yield of unit to danger area carry out the second subzone, provide the quiet water yield Q of the unit and
The critical value Q that the quiet water yield Q of unit is sequentially increased1、Q2And Q3；As Q≤Q1When, the zoning unit is assigned a value of danger
Institute's evaluation values are assigned a value of " small " by cell；Work as Q1< Q≤Q2When, the zoning unit is assigned a value of dangerous medium area, by institute
Evaluation values be assigned a value of " in "；Work as Q2< Q≤Q3When, the zoning unit is assigned a value of dangerous great Qu, by institute's evaluation values assignment
For " big "；As Q3 < Q, the zoning unit is assigned a value of dangerous very big area, institute's evaluation values are assigned a value of " pole ".Above
The quiet water yield critical value Q of unit area1、Q2And Q3It is determined according to mine real data or code requirement.
Step 4.3, third subzone is carried out to danger area with water-filling intensity, the water-filling intensity U and the water-filling is provided
The critical value U that intensity is sequentially increased1、U2And U3；According to the assignment of institute's evaluation values, the water-filling intensity U and critical value are compared
U1、U2And U3, secondary assignment is carried out to institute's evaluation values；Work as U1< Q≤U2When, secondary assignment institute's evaluation values be " in "；Work as U2
< Q≤U3When, secondary assignment institute's evaluation values are " big "；Work as U3When < Q, secondary assignment institute's evaluation values are " pole ".It is specific next
It says, when evaluation of estimate is " small ": working as U1< Q≤U2, equal areas on the line, and evaluation of estimate is assigned a value of " in "；Work as U2< Q≤
U3, it is in danger great Qu, and evaluation of estimate is assigned a value of " big "；Work as U3< Q, dangerous very big area, and by " evaluation of estimatej" be assigned a value of
" pole "；When evaluation of estimate be " in " when: work as U2< Q≤U3, dangerous great Qu, and evaluation of estimate is assigned a value of " big "；Work as U3< Q, in danger
The very big area in danger, and by " evaluation of estimatej" it is assigned a value of " pole "；When evaluation of estimate is " big ": working as U3< Q, in dangerous very big area, and will
Evaluation of estimate is assigned a value of " pole "；Work as U3Evaluation of estimate in dangerous very big area, and is assigned a value of " pole " by < Q；Above water-filling intensity is faced
Dividing value U1、U2And U3Value is determined according to mine real data or code requirement.
It in some embodiments of the invention, include one or more filled water bearing stratas in the evaluation domain；When institute's commentary
When including two or more filled water bearing stratas in valence domain, the hazard assessment of each layer filled water bearing strata repeats institute
State step 2, step 3 and step 4.
In some embodiments of the invention, the evaluation of estimate of each unit is differentiated.Method of discrimination is as follows: when having one
Layer evaluation of estimate be " pole " or two layers and the above evaluation of estimate be " big ", and assignment evaluation of estimate is " pole ", and modifying the cell colors is to endanger
Danger greatly area's color number；And the evaluation of estimate of the unit is emptied；When having, one layer of evaluation of estimate is " big " or two layers and the above evaluation of estimate is
" in " when, assignment evaluation of estimate is " big ", and modifying the cell colors is danger great Qu color number；And it is the evaluation of estimate of the unit is clear
It is empty；Have one layer of evaluation of estimate be " in " or two layers and the above evaluation of estimate when be " small ", assignment evaluation of estimate for " in ", and modify the unit
Color is area's color number in danger；And the evaluation of estimate of the unit is emptied；When there is one layer of evaluation of estimate to be that " small " or two layers or more are commented
When value is " opposite ", assignment evaluation of estimate is " small ", and modifies the cell colors as dangerous cell color number, and commenting the unit
Value empties；When there is one layer of evaluation of estimate to be " opposite ", assignment evaluation of estimate is " opposite ", and modifying the cell colors is relative risk
Area's color number；And the evaluation of estimate of the unit is emptied；When having one layer and the above evaluation of estimate is " safety ", assignment evaluation of estimate is " peace
Entirely ", and the cell colors are modified as safety zone color number；And the evaluation of estimate of the unit is emptied.
Below with reference to certain mine roof Spray water way evaluation specific embodiment come the present invention will be described in detail create.
The first step obtains the characteristic parameter reconnoitred, as shown in Fig. 2, certain mine is reconnoitred, hole has 10 (S1-S10) and one is led
Water tomography (F1), certain roof only have a filled water bearing strata, the quiet water yield (Q of unit areaIt is quiet), filled water bearing strata bottom plate mark
Height, certain roof absolute altitude, certain coal seam height of the water conductive fracture zone absolute altitude (H) and infiltration coefficient are as shown in table 1 below.
1 characteristic parameter of table (data are not directed to specific mining area)
Second step, in MAPGIS platform, using 1 data of table, establish respectively the quiet water yield distributed model of the unit area,
Filled water bearing strata floor level distributed model, height of the water conductive fracture zone absolute altitude distributed model, certain roof absolute altitude distributed model,
Water-filling intensity (example selects infiltration coefficient) distributed model.Other water filling channel distributed models are generated according to tomography F1, its is aqueous
Layer conduction value is assigned a value of -1.
Third step carries out spatial analysis to roof absolute altitude distributed model and height of the water conductive fracture zone distributed model, builds
Vertical height of the water conductive fracture zone absolute altitude distributed model；Or in reconnoitring database by roof absolute altitude and height of the water conductive fracture zone it
With assignment into height of the water conductive fracture zone absolute altitude attribute, height of the water conductive fracture zone absolute altitude is established according to height of the water conductive fracture zone absolute altitude
Model.
4th step carries out spatial analysis to filled water bearing strata floor level distributed model and height of the water conductive fracture zone absolute altitude,
Establish leaking crevice belt conducting filled water bearing strata pattern type；Or by height of the water conductive fracture zone absolute altitude and water-filling in reconnoitring database
The difference assignment of aquifer floor elevation absolute altitude establishes leaking crevice belt conducting filled water bearing strata type into conducting value attribute, according to conduction value
Model.
5th step is connected filled water bearing strata pattern type to leaking crevice belt and other water filling channel distributed models carries out space
Conducting model is established in analysis.
6th step carries out spatial analysis to conducting model and quiet water yield model, water-filling strength model, establishes evaluation mould
Type.
7th step successively carries out discriminant analysis to conduction value, the quiet water yield of unit area, water-filling intensity, establishes risk
Partition model.Wherein, protective layer thickness b=20m；Q1=5, Q2=10, Q3=15；U1=0.1, U2=1, U3=10.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of roof Spray water way evaluation method, which comprises the following steps:
Step 1 sets at least one hazard assessment domain, obtains the characteristic parameter in coal seam, filled water bearing strata；
Step 2 establishes the quiet water yield distributed model of unit area, filled water bearing strata floor level distributed model, leaking crevice belt
Height absolute altitude distributed model, roof absolute altitude distributed model and water-filling intensity distribution model；Generate the distribution of other water filling channels
Model, and switch it on value and be assigned a value of -1；
Step 3 establishes conducting model, using conducting model, the quiet water yield distributed model of unit and water-filling intensity distribution model into
The Risk Assessments model in the evaluation domain is established in row spatial analysis；
Step 4 carries out risk zoning evaluation to the zoning unit in the Risk Assessments model.
2. a kind of roof Spray water way evaluation method according to claim 1, which is characterized in that in the step 4
Risk zoning evaluation include the following steps:
Step 4.1, the first subzone is carried out to danger area with conduction value；
Step 4.2, the second subzone is carried out to danger area with the quiet water yield of unit area；
Step 4.3, third subzone is carried out to danger area with water-filling intensity.
3. a kind of roof Spray water way evaluation method according to claim 2, which is characterized in that the step 4.1
Specifically comprise the following steps:
Conduction value W, protective layer thickness b, zoning unit and evaluation of estimate are provided；
As W≤0, the zoning unit is assigned a value of danger area, institute's evaluation values are assigned a value of " danger "；
As 0≤W≤b, the zoning unit is assigned a value of relative risk area, institute's evaluation values are assigned a value of " opposite "；
As W >=b, the zoning unit is assigned a value of safety zone, institute's evaluation values are assigned a value of " safety ".
4. a kind of roof Spray water way evaluation method according to claim 3, which is characterized in that the step 4.2
Specifically comprise the following steps:
The critical value Q that the quiet water yield Q of the unit area and the quiet water yield Q of the unit area are sequentially increased is provided1、Q2And Q3；
If evaluation of estimate is " danger ",
As Q≤Q1When, the zoning unit is assigned a value of dangerous cell, institute's evaluation values are assigned a value of " small "；
Work as Q1< Q≤Q2When, the zoning unit is assigned a value of dangerous medium area, institute's evaluation values are assigned a value of " in "；
Work as Q2< Q≤Q3When, the zoning unit is assigned a value of dangerous great Qu, institute's evaluation values are assigned a value of " big "；
Work as Q3When < Q, the zoning unit is assigned a value of dangerous very big area, institute's evaluation values are assigned a value of " pole ".
5. a kind of roof Spray water way evaluation method according to claim 4, which is characterized in that the step 4.3
Specifically comprise the following steps:
There is provided the water-filling intensity U and critical value U that the water-filling intensity is sequentially increased1、U2And U3；
According to the assignment of institute's evaluation values, the water-filling intensity U and critical value U are compared1、U2And U3, two are carried out to institute's evaluation values
Secondary assignment:
If evaluation of estimate is " small ",
Work as U1< Q≤U2When, secondary assignment institute's evaluation values be " in "；
Work as U2< Q≤U3When, secondary assignment institute's evaluation values are " big "；
Work as U3When < Q, secondary assignment institute's evaluation values are " pole "；
If evaluation of estimate be " in ",
Work as U2< U≤U3When, secondary assignment institute's evaluation values are " big "；
Work as U3When < U, secondary assignment institute's evaluation values are " pole "；
If evaluation of estimate is " big ",
Work as U3When < U, secondary assignment institute's evaluation values are " pole ".
6. a kind of roof Spray water way evaluation method according to claim 1, which is characterized in that the characteristic parameter
Including the quiet water yield of unit area, water-filling intensity, filled water bearing strata floor level, coal seam height of the water conductive fracture zone absolute altitude, coal seam
Top elevation and other water filling channels.
7. a kind of roof Spray water way evaluation method according to claim 6, which is characterized in that the water-filling intensity
Select at least one of infiltration coefficient, enriched water coefficient and specific capacity.
8. a kind of roof Spray water way evaluation method according to claim 1, which is characterized in that described to establish water guide
Slit band height absolute altitude distributed model specifically includes the following steps:
S1, roof absolute altitude model is established by spacial analytical method according to roof absolute altitude；
S2, height of the water conductive fracture zone model is established by spacial analytical method according to the height of the water conductive fracture zone；
S3, the method according to the roof absolute altitude model and the height of the water conductive fracture zone model Jing Guo spatial analysis obtain
The height of the water conductive fracture zone absolute altitude distributed model splits the sum of roof absolute altitude and height of the water conductive fracture zone assignment to water guide
Seamed belt height absolute altitude.
9. a kind of roof Spray water way evaluation method according to claim 1, which is characterized in that in the step 3
Foundation model is connected specifically: by the difference assignment of the filled water bearing strata floor level and height of the water conductive fracture zone absolute altitude to leading
In logical value, using the method for spatial analysis, leaking crevice belt conducting filled water bearing strata pattern type is established according to conduction value, other are filled
Filled water bearing strata pattern type is connected with the leaking crevice belt and carries out spatial analysis for aquaporin distributed model, establishes conducting model.
10. according to claim 1 to a kind of any one of 9 roof Spray water way evaluation methods, which is characterized in that when
When including two or more filled water bearing stratas in the evaluation domain, the hazard assessment of each layer filled water bearing strata
Repeating said steps 2, step 3 and step 4.
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