CN106777655A - The equivalent computational methods and device for adopting thickness rate in overhead transmission line coal mine gob - Google Patents
The equivalent computational methods and device for adopting thickness rate in overhead transmission line coal mine gob Download PDFInfo
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- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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Abstract
A kind of equivalent computational methods and device for adopting thickness rate in overhead transmission line coal mine gob, including：Calculate the equivalent thickness of each geotechnical stratified of above goaf；The equivalent thickness that overlying rock-soil layer is respectively layered
Description
Technical field
The invention belongs to overhead transmission line Disaster Prevention Design and protection field, it is related to a kind of overhead transmission line colliery mined out
The equivalent computational methods and device for adopting thickness rate in area.
Background technology
Electric power pylon is extremely sensitive to the surface movement and deformation that exploitation causes, and the exploitation of subterranean coal can cause the shifting of earth's surface
Dynamic and deformation, the security of ultra-high-tension power transmission line will be by extreme influence.But goaf earth's surface deformation how is evaluated to top
The influence degree of newly-built transmission line of electricity, is always the problem being not yet fully solved both at home and abroad.
At present, domestic and foreign scholars typically adopt the size of thickness rate by tradition, that is, the buried depth in coal seam is exploited with it
Whether the size of the ratio of thickness, the influence degree to earth's surface deformation is divided, and proposed suitably to stand according to the grade for dividing
Tower and take the suggestion of structural measure.However, because all there is significant area in the thickness and property of different regions overlying rock-soil layer
Not, the simple buried depth with coal seam and the earth's surface deformation extent in the ratio in judgement goaf of its thickness, are theoretically unsound.
The same numerical value for adopting thickness rate, may correspond to entirely different geological condition, it is impossible to the order of severity of the actual earth's surface deformation of reflection,
Even result in serious misjudgment.Therefore, adopt thickness rate to assess goaf earth's surface deformation to earth's surface power transmission line according to traditional
The influence degree on road, carries out planning, construction and the determination of running technology scheme of coal mine gob overhead transmission line, exists tight
The potential safety hazard of weight.
The content of the invention
For the problem that above-mentioned prior art is present, a kind of overhead transmission line coal mine gob of present invention offer is equivalent to adopt
The computational methods and device of thickness rate, the method calculate theoretical according to fully, it is considered to comprehensively, reliable results, can be on reasonable consideration
The influence degree that overlying strata the thickness of the layer and property deform to earth's surface, can exactly reflect the serious journey of actual earth's surface deformation
Degree, can be conducive to transmission line of electricity by way of goaf earth's surface deformation danger evaluate, can aid in colliery
Goaf overhead transmission line reasonably plans, build and running technology scheme determination, the safety tool to ensureing transmission line of electricity
There is an important directive significance and reference value, what the device can rapidly and accurately calculate coal mine gob adopts thickness rate, can reflect
Go out the order of severity of actual earth's surface deformation.
To achieve these goals, the present invention provides a kind of equivalent calculating for adopting thickness rate in overhead transmission line coal mine gob
Method, comprises the following steps：
Step one：According to the property and thickness of overlying rock-soil layer, calculate above goaf each geotechnical stratified it is equivalent
Thickness；
Step 2：The equivalent thickness that overlying rock-soil layer is respectively layeredCumulative summation is carried out, overlying rock-soil layer is tried to achieve and is corresponded to
The equivalent total thickness of reference fluid；
Step 3：The equivalent total thickness of working thickness and overlying rock-soil layer according to coal seam, calculates the equivalent of goaf and adopts thickness rate.
As a kind of preferred, the equivalent thickness of each geotechnical stratified of above goaf in the step oneComputing formula be：
Wherein：QkTo be selected as the assessment of rock properties coefficient of the rock-soil layer of reference fluid in overlying rock-soil layer；
QiIt is i-th layer of assessment of rock properties coefficient of rock-soil layer in overlying rock-soil layer；
hiIt is i-th layer of depth of stratum of rock-soil layer in overlying rock-soil layer.
As a kind of preferred, equivalent total thickness of the overlying rock-soil layer corresponding to reference fluid in the step 2Calculating
Formula is：
As one kind preferably, goaf is equivalent in the step 3 adopts thickness rateComputing formula be：
Wherein：B is the thickness of seam mining.
The loess in overlying rock-soil layer preferably, in the step one is selected as reference fluid, the rock of loess as a kind of
Property evaluation coefficient be 1.0.
Further include, the goaf being calculated as reference fluid using loess is equivalent to adopt thickness rateIt is located at respectivelyWithIn the range of when, represent earth's surface deformation locates respectively for the influence degree of transmission line of electricity
In serious, medium and slight Three Estate.
When the equivalent result of calculation for adopting thickness rate shows that earth's surface deformation belongs to serious to the influence degree of transmission line of electricity, this is adopted
Dead zone should not carry out the construction of transmission line of electricity；It is mined out at this when earth's surface deformation belongs to medium to the influence degree of transmission line of electricity
When area carries out transmission line construction, structure and construction resistance to deformation measure should be taken；When influence journey of the earth's surface deformation to transmission line of electricity
When degree belongs to slight, when the goaf carries out the construction of transmission line of electricity, special measure can not be taken.
As a kind of preferred, the measure of structure and construction resistance to deformation is taken to refer specifically to：Improve line walking frequency, carry out power transmission line
The deformation in line and displacement monitoring on road.
To achieve these goals, the present invention also provides a kind of overhead transmission line coal mine gob the equivalent meter for adopting thickness rate
Device is calculated, including：
Equivalent thickness computing module, for property and thickness according to overlying rock-soil layer, calculates each of above goaf
The equivalent thickness of geotechnical stratified；
Equivalent total thickness computing module, for the equivalent thickness for being respectively layered overlying rock-soil layerCumulative summation is carried out, is tried to achieve
Overlying rock-soil layer corresponds to the equivalent total thickness of reference fluid；
It is equivalent to adopt thickness rate computing module, for the working thickness according to coal seam and the equivalent total thickness of overlying rock-soil layer, meter
Calculate the equivalent of goaf and adopt thickness rate.
Further, described device is further included：
Output module, for adopting thickness rate when the goaf being calculated as reference fluid using loess is equivalentWhen, output
The goaf is not suitable for building the conclusion of transmission line of electricity；WhenWhen, needed when exporting the goaf transmission line construction
Take the conclusion of structure and construction resistance to deformation measure；WhenWhen, output is adapted to build the conclusion of transmission line of electricity in the goaf.
The present invention is based on goaf formation geology data, with the common loess in coal mine gob as reference fluid, with lithology
Evaluation coefficient is conversion foundation, and the actual (real) thickness of the DIFFERENT SOIL layer in the overlying rock-soil layer of goaf is scaled into standard first is situated between
The equivalent thickness of matter, then carries out the equivalent thickness of above goaf rock-soil layer cumulative summation and obtains goaf overlying rock-soil layer
Equivalent total thickness, that is, working seam equivalent depth, then by overlying rock-soil layer equivalent total thickness divided by coal mining thickness,
Thickness rate is adopted so as to obtain the equivalent of the goaf.On this basis, with loess as reference fluid, it is proposed that evaluate transmission line of electricity
The earth's surface in approach goaf deforms the judge index of the order of severity.The computational methods, it calculates theoretical according to fully, it is considered to complete
Face, reliable results are easy to use, and result of calculation is more fitted the requirement of engineering design, is capable of reasonable consideration overlying rock-soil layer
The influence degree that thickness and property deform to earth's surface, can exactly reflect the order of severity of actual earth's surface deformation, be easy to push away
Wide application, with wide applicability.The method can also be conducive to transmission line of electricity by way of goaf earth's surface deformation
Danger is evaluated, and be can aid in coal mine gob overhead transmission line and is reasonably planned, builds and running technology scheme
Determination, to ensure transmission line of electricity safety there is important directive significance and reference value.The device can be counted rapidly and accurately
Calculate coal mine gob adopts thickness rate, can reflect the order of severity of actual earth's surface deformation.
Specific embodiment
The invention will be further described below.
Movement and deformation of the property of overlying rock-soil layer to earth's surface have important influence, that is, are considering to adopt thickness rate to frame
During the influence of the stability of empty transmission line of electricity earth's surface, it is necessary to consider the thickness and property of overlying rock-soil layer.So, the present invention will not
Connatural overlying rock-soil layer conversion is certain soil layer or rock stratum as reference fluid, by thickness rate of adopting alleged at present, conversion
Be unified thickness rate of adopting, i.e., it is equivalent to adopt thickness rate, the influence degree that goaf geological conditions deforms to earth's surface can be more reacted, with this
As the important evidence of the planning of overhead transmission line, construction and the determination of running technology scheme.
A kind of equivalent computational methods for adopting thickness rate in overhead transmission line coal mine gob, comprise the following steps：
Step one：Calculate the equivalent thickness of each geotechnical stratified of above goafIts computing formula is：
Wherein：QkTo be selected as the assessment of rock properties coefficient of the rock-soil layer of reference fluid in overlying rock-soil layer, in reality
During calculating, selection loess is reference fluid, and its assessment of rock properties coefficient is 1.0；
QiIt is i-th layer of assessment of rock properties coefficient of rock-soil layer in overlying rock-soil layer；
hiIt is i-th layer of depth of stratum of rock-soil layer in overlying rock-soil layer, unit is m；
For i-th layer of rock-soil layer conversion is the equivalent thickness after reference fluid in overlying rock-soil layer, unit is m；
Table 1：Layering assessment of rock properties coefficient
Step 2：The equivalent thickness that overlying rock-soil layer is respectively layeredCumulative summation is carried out, overlying rock-soil layer is tried to achieve and is corresponded to
The equivalent total thickness of reference fluid, its computing formula is：
Wherein：Equivalent total thickness for goaf overlying rock-soil layer relative to reference fluid, unit is m；
Step 3：The equivalent total thickness of working thickness and overlying rock-soil layer according to coal seam, calculates the equivalent of goaf and adopts
Thickness rate, its computing formula is：
Wherein：Thickness rate is adopted for goaf is equivalent；
B is the thickness of seam mining, and unit is m.
The goaf that is calculated as reference fluid using loess is equivalent to adopt thickness rateIt is located at respectively
WithIn the range of when, represent earth's surface deformation be respectively at for the influence degree of transmission line of electricity it is serious, medium and slight
Three Estate.
When the equivalent result of calculation for adopting thickness rate shows that earth's surface deformation belongs to serious to the influence degree of transmission line of electricity, this is adopted
Dead zone should not carry out the construction of transmission line of electricity；It is mined out at this when earth's surface deformation belongs to medium to the influence degree of transmission line of electricity
When area carries out transmission line construction, necessary structure and construction resistance to deformation measure should be taken, improve line walking frequency, it is conditional to answer
Carry out the deformation in line and displacement monitoring of transmission line of electricity；When earth's surface deformation belongs to slight to the influence degree of transmission line of electricity,
When the goaf carries out the construction of transmission line of electricity, special measure can not be taken.
The present invention proposes the influence journey that a kind of thickness and property for being capable of reasonable consideration overlying rock-soil layer deforms to earth's surface
Degree the equivalent computational methods for adopting thickness rate, it is possible to accordingly to transmission line of electricity by way of goaf earth's surface deformation danger enter
Row is evaluated, and to determine the planning of overhead transmission line, build and running technology scheme, the safety to ensureing transmission line of electricity has weight
The directive significance and reference value wanted.
Instantiation is named to illustrate the concrete operation step of computational methods of the present invention：
Embodiment 1：The basic preservation situation of the overlying rock-soil layer of certain goaf coal-face is as shown in table 1, mine coal
Thickness degree is 11.0m.Now need by calculating the equivalent influence degree adopted thickness rate, evaluate to transmission line of electricity at this, and propose
Whether can be in the suggestion of construction circuit herein.
Table 2：Each hierarchy parameters of overlying rock-soil layer
1. the equivalent thickness of each rock-soil layer of above goaf is calculated
Using loess as reference fluid, the actual (real) thickness of each layer rock-soil layer of overlying rock-soil layer is scaled corresponding to standard
The equivalent thickness of medium.
By actual (real) thickness, the lithology factor parameter substitution formula of each layering in table 2Be calculated each layer etc.
Effect thicknessAs shown in table 3.
2. the equivalent total thickness of overlying rock-soil layer is calculated
Each layer equivalent thickness that will be tried to achieve successively adds up downwards from earth's surface, by formulaAbove goaf is tried to achieve to own
The accumulation equivalent total thickness of rock-soil layerAs shown in table 3.
From table 3, actual gross thickness of the goaf overlying rock-soil layer of position is 333.5m at this, and corresponds to standard
The equivalent total thickness of medium loess is 401.8m.
Table 3：Each layering loess equivalent thickness relatively
3. calculate that goaf is equivalent adopts thickness rate
According to the method for patent of the present invention, by formulaEquivalent adopt thickness rate in the goaf for calculating position at this
Corresponding, if with traditional computational methods, the goaf is calculated with each rock-soil layer actual (real) thickness
Thickness rate of adopting should beThe safe range for allowing to build transmission line of electricity is exceeded.
4. the evaluation of the goaf earth's surface deformation to the influence degree of transmission line of electricity is carried out
From above-mentioned result of calculation, according to the computational methods of patent of the present invention, its is equivalent, and to adopt thickness rate be 35.6, between adopting
Thickness rate is between 35 and 120.Judge accordingly, the deformation of its earth's surface belongs to General Influence degree, can build in this place
Electric power pylon, but necessary anti-deformation structure and technical measures should be taken.
The calculating of above-mentioned example shows, using Related Computational Methods of the invention, in that context it may be convenient to be calculated various multiple
Thickness rate value is adopted in goaf under miscellaneous geological conditions, and its calculating process is simple, readily appreciates grasp.Particularly, the present invention will be various
Rock-soil layer is all reduced to a kind of reference fluid, and the goaf correlation subsidence being easy under different regions, different geological conditions is seen
Comprehensive Comparison and relevant power layout of roads, design and the contrast of operating experience, summary and the popularization and application of data are surveyed, is
The problem that many experiences during current goaf circuit is designed are difficult to the technical standard for rising to unified is solved, goaf transmission of electricity is improved
The scientific and technological level of the planning, design and operation of circuit, there is provided one kind effectively researchs and analyses means and method.
The overlying rock in typical goaf, is mainly made up of the representativeness rock such as loess, sandstone, silt or the soil body.
Applicant uses FLAC 3D finite element softwares, establishes the depression analysis model of a large amount of typical case goafs Rock And Soil, analyzes on ground
The main earth's surface deformation index such as sinking, deflection ratio, tilting value is expressed after lower seam mining.Research is shown, is made with loess
It is reference fluid, equivalent when overlying rock adopts thickness rateDuring less than 35, the earth's surface deformation features for showing noncontinuity are sunk more
The rate of falling into is larger, and depression tomography easily occurs in the boundary position in goaf and non-goaf, this explanation, when equivalent thickness rate of adopting is less than 35
When, earth's surface deformation is violent, belongs to hazardous location, should avoid building electric power pylon herein；Equivalent when overlying rock adopts thickness rateDuring more than 120, the degree very little of the earth's surface deformation of above goaf, the earth's surface near the zone boundary of goaf is also without obvious
Unfavorable earth's surface deformation, this explanation when it is equivalent adopt thickness rate more than 120 when, the earth's surface deformation in goaf will not be to the peace of electric power pylon
Cause to have a strong impact on entirely, can normally build electric power pylon；Equivalent when overlying rock adopts thickness rateWhen, goaf
There is the deformation such as certain sinking, inclination, but earth's surface deformation shows good continuity, and deflection ratio is also smaller, goaf
Periphery earth's surface is no that steps sudden destruction of surface occurs by being influenceed also very little, now, as long as taking certain arranging
Apply, such as bottom composite protective plate basis is set, foundation bolt and supporting correction righting measure etc. is lengthened, it is possible to is effective
Solve earth surface cracks, surface subsidence and earth's surface and incline the adverse effect brought to steel tower, therefore, equivalent when overlying rock adopts thickness
ThanWhen, it is feasible to be erected power transmission lines in above goaf, but should be carried out with reference to specific orographic condition
Supporting structure and technical measures, further improves the security of electric power pylon.
Based on same inventive concept, present invention also offers a kind of equivalent thickness rate of adopting in overhead transmission line coal mine gob
Computing device, including：
Equivalent thickness computing module, for property and thickness according to overlying rock-soil layer, calculates each of above goaf
The equivalent thickness of geotechnical stratified；
Equivalent total thickness computing module, for the equivalent thickness for being respectively layered overlying rock-soil layerCumulative summation is carried out, is asked
Obtain the equivalent total thickness that overlying rock-soil layer corresponds to reference fluid；
It is equivalent to adopt thickness rate computing module, for the working thickness according to coal seam and the equivalent total thickness of overlying rock-soil layer, meter
Calculate the equivalent of goaf and adopt thickness rate.
Further, described device may further include：
Output module, for adopting thickness rate when the goaf being calculated as reference fluid using loess is equivalentWhen, it is defeated
Go out the conclusion that the goaf is not suitable for building transmission line of electricity；WhenWhen, when exporting the goaf transmission line construction
The conclusion of structure and construction resistance to deformation measure need to be taken；WhenWhen, output is adapted to build transmission line of electricity in the goaf
Conclusion.
What the device can rapidly and accurately calculate coal mine gob adopts thickness rate, can reflect the serious of actual earth's surface deformation
Degree.
The measure for taking structure and construction resistance to deformation can specifically include：Improve line walking frequency, carry out transmission line of electricity
Deformation in line and displacement monitoring.
The present invention is based on goaf formation geology data, by the actual thickness of the DIFFERENT SOIL layer in the overlying rock-soil layer of goaf
Degree is scaled the equivalent thickness of reference fluid, and the equivalent thickness of above goaf rock-soil layer then is carried out into cumulative summation is adopted
The equivalent total thickness of dead zone overlying rock-soil layer, that is, working seam equivalent depth, then by the equivalent total thickness of overlying rock-soil layer
Degree adopts thickness rate divided by coal mining thickness so as to obtain the equivalent of the goaf.On this basis, it is proposed that evaluate power transmission line road
The earth's surface in footpath goaf deforms the judge index of the order of severity.Being capable of overlying strata on reasonable consideration using scheme provided by the present invention
The influence degree that the thickness of the layer and property deform to earth's surface, reflects the order of severity of actual earth's surface deformation exactly, is easy to
Popularization and application, with wide applicability.And, also help to transmission line of electricity by way of goaf earth's surface deformation danger
Property is evaluated, contribute to coal mine gob overhead transmission line reasonably to plan, build and running technology scheme determination, it is right
Ensureing the safety of transmission line of electricity has important directive significance and reference value.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the application can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification made within god and principle, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (10)
1. equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob, it is characterised in that comprise the following steps：
Step one：According to the property and thickness of overlying rock-soil layer, the equivalent thickness of each geotechnical stratified of above goaf is calculated；
Step 2：The equivalent thickness that overlying rock-soil layer is respectively layeredCumulative summation is carried out, overlying rock-soil layer is tried to achieve corresponding to standard
The equivalent total thickness of medium；
Step 3：The equivalent total thickness of working thickness and overlying rock-soil layer according to coal seam, calculates the equivalent of goaf and adopts thickness rate.
2. the equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 1, its feature
It is, the equivalent thickness of each geotechnical stratified of above goaf in the step oneComputing formula be：
Wherein：QkTo be selected as the assessment of rock properties coefficient of the rock-soil layer of reference fluid in overlying rock-soil layer；
QiIt is i-th layer of assessment of rock properties coefficient of rock-soil layer in overlying rock-soil layer；
hiIt is i-th layer of depth of stratum of rock-soil layer in overlying rock-soil layer.
3. equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 1, it is special
Levy and be, overlying rock-soil layer corresponds to the equivalent total thickness of reference fluid in the step 2Computing formula be：
4. equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 1, it is special
Levy and be, goaf is equivalent in the step 3 adopts thickness rateComputing formula be：
Wherein：B is the thickness of seam mining.
5. equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 2, it is special
Levy and be, select the loess in overlying rock-soil layer as reference fluid in the step one, the assessment of rock properties coefficient of loess is
1.0。
6. equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 5, it is special
Levy and be, further include：The goaf that is calculated as reference fluid using loess is equivalent to adopt thickness rateIt is located at respectivelyWithIn the range of when, represent earth's surface deformation locates respectively for the influence degree of transmission line of electricity
In serious, medium and slight Three Estate.
7. equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 6, it is special
Levy and be, when the equivalent result of calculation for adopting thickness rate shows that earth's surface deformation belongs to serious to the influence degree of transmission line of electricity, this is adopted
Dead zone should not carry out the construction of transmission line of electricity；When earth's surface deformation belongs to medium to the influence degree of transmission line of electricity, adopted at this
When dead zone carries out transmission line construction, structure and construction resistance to deformation measure need to be taken；When influence of the earth's surface deformation to transmission line of electricity
When degree belongs to slight, when the goaf carries out the construction of transmission line of electricity, it is not required to take special measure.
8. equivalent computational methods for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 7, it is special
Levy and be, the measure for taking structure and construction resistance to deformation is referred specifically to：Improve line walking frequency, carry out the online change of transmission line of electricity
Shape and displacement monitoring.
9. the equivalent computing device for adopting thickness rate in a kind of overhead transmission line coal mine gob, it is characterised in that including：
Equivalent thickness computing module, for property and thickness according to overlying rock-soil layer, calculates each ground of above goaf
The equivalent thickness of layering；
Equivalent total thickness computing module, for the equivalent thickness for being respectively layered overlying rock-soil layerCumulative summation is carried out, overlying is tried to achieve
Rock-soil layer corresponds to the equivalent total thickness of reference fluid；
Equivalent to adopt thickness rate computing module, for the working thickness according to coal seam and the equivalent total thickness of overlying rock-soil layer, calculating is adopted
The equivalent of dead zone adopts thickness rate.
10. the equivalent computing device for adopting thickness rate in a kind of overhead transmission line coal mine gob according to claim 7, it is special
Levy and be, further include：
Output module, for adopting thickness rate when the goaf being calculated as reference fluid using loess is equivalentWhen, output should
Goaf is not suitable for building the conclusion of transmission line of electricity；WhenWhen, need to be adopted when exporting the goaf transmission line construction
Take the conclusion of structure and construction resistance to deformation measure；WhenWhen, output is adapted to build the conclusion of transmission line of electricity in the goaf.
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| CN112881170A (en) * | 2021-01-11 | 2021-06-01 | 中国矿业大学 | Method for calculating actual mining thickness of underground coal gasification |
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| CN112881170A (en) * | 2021-01-11 | 2021-06-01 | 中国矿业大学 | Method for calculating actual mining thickness of underground coal gasification |
| CN112881170B (en) * | 2021-01-11 | 2021-10-26 | 中国矿业大学 | Method for calculating actual mining thickness of underground coal gasification |
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