CN109635508A - A kind of earth's surface skewness subsidence factor pre-judging method based on key stratum structure - Google Patents
A kind of earth's surface skewness subsidence factor pre-judging method based on key stratum structure Download PDFInfo
- Publication number
- CN109635508A CN109635508A CN201910032287.9A CN201910032287A CN109635508A CN 109635508 A CN109635508 A CN 109635508A CN 201910032287 A CN201910032287 A CN 201910032287A CN 109635508 A CN109635508 A CN 109635508A
- Authority
- CN
- China
- Prior art keywords
- key stratum
- stratum structure
- calculated
- key
- earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 16
- 208000010392 Bone Fractures Diseases 0.000 claims abstract description 10
- 206010017076 Fracture Diseases 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 9
- 239000003245 coal Substances 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims description 12
- 238000012937 correction Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000005065 mining Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000013459 approach Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 11
- 238000012790 confirmation Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The earth's surface skewness subsidence factor calculation method based on key stratum structure that the invention discloses a kind of calculates the primary fracture angle of key stratum structure, the period break corner of key stratum structure, the surface subsidence coefficient of skew step by step.Of the invention adopts a rigorous approach, accurately, simply, safely identifies prediction for the overlying strata top plate variation of coal mine work back production and surface subsidence and provides foundation and suggestion.
Description
Technical field
The invention belongs to Safety of Coal Mine Production technical fields, more particularly, to a kind of earth's surface based on key stratum structure
Skewness subsidence factor pre-judging method.
Background technique
After the back production of stope coal seam, since overlying rock is mobile, earth's surface will generate sinking, probability is widely used at present
The estimated surface movement and deformation of integration method, this method has ignored the mechanical property of overlying rock, and rock stratum is considered as single company
The prediction of mining subsidence model of continuous uniform dielectric has certain defect.Key strata of covering rock plays control action, pine to ground settlement
Scattered layer can digest the Non-uniform Settlement of key stratum, it can be seen that the settling phase of key stratum determines ground settlement state.Institute
With after seam mining, only the fracture of key stratum, bending shape determine surface subsidence form.Using wall coal method into
After row back production and whole caving method management top plates, since Stope roof overburden failure sinks, earth's surface, which necessarily leads to, to be collapsed.
Ground movement and deformation prediction is carried out at present, and probability integration process is widely applied, and the position state curve of this method is similar to practically table
Sinking form does not account for the mechanical property and stress damage of overlying rock but.After seam mining, key stratum lower part rock stratum shape
It is caving at direct top, only the fracture amplitude of key stratum, bending shape determine surface subsidence situation.The formation item of key stratum rock mass
Part and history of evolution determine its distinctive initial damage feature, are allowed to be different from other type rock mass such as magmatic rocks or coagulation
Soil.Study Damage and Fracture feature and inbreak breaking degree of the key stratum rock mass under the conditions of adopting, it is necessary to fully consider itself original
Begin to damage occurrence, on the whole, the initial damage of key stratum rock mass includes meso-scale and macro-scale.Therefore, one kind is sought
Accurate and convenient earth's surface skewness subsidence factor pre-judging method has the urgent realistic price of certain economic significance sum.
Summary of the invention
Present invention aims to overcome that inconvenience existing for existing Predicting Technique, provides a kind of accurate and convenient earth's surface skewness
Subsidence factor pre-judging method, the prediction to sink for earth's surface skewness provide important reference result.
The present invention solves technical problem and adopts the following technical scheme that
A kind of earth's surface skewness subsidence factor pre-judging method based on key stratum structure, comprising the following steps:
Step 1, simply supported beam basic model is parsed, the primary fracture angle θ of key stratum structure is calculated1:
Field test determines parameter values, comprising: freely-supported beam length L, the height h of the rectangular section of key stratum structure, it is single
Position thickness simply supported beam coboundary suffered by equally distributed load q effect, beam support in both ends, branch pressure-bearing counter-force be by
The form for the shearing being distributed in the interface of both ends acts on beam, disregards self weight, centered on the center of gravity of simply supported beam, in conjunction with ready-made
The position of test confirmation breaking point and coordinate, using level along the direction of narrow beam as x-axis, direction vertically downward is y-axis, breaking point
Coordinate be (x, y)；
According to damage variable correction formula and base object model first weighting principle, the primary fracture angle of key stratum structure is calculated,
Calculation formula are as follows:
Step 2, cantilever beam basic model is parsed, the period break corner θ of key stratum structure is calculated2:
Field test determines parameter values, comprising: cantilever beam length L, the height h of the rectangular section of key stratum structure, it is single
The effect of suffered tangential distribution power q on the cantilever beam right side of position thickness, beam support disregards self weight in left end, in conjunction with ready-made examination
Position and the coordinate for testing confirmation breaking point, centered on the left end of cantilever beam, horizontal along the direction of cantilever beam is x-axis, vertically to
Under direction be y-axis, the coordinate (x, y) of breaking point；
According to damage variable correction formula and base object model periodic weighting principle, the period break corner of key stratum structure is calculated,
Calculation formula are as follows:
Step 3, the surface subsidence coefficient of skew w based on key stratum structure is parsedk:
According to engineering practice, the numerical value of basic parameter is determined, the limit sinking displacement amount w including key stratum structure0、
Working seam is to the average vertical distance ∑ h ' of position of key stratum, key stratum total length L, position of key stratum away from earth's surface vertical depth
h2, coal working face average mining height M；
Calculate the surface subsidence coefficient of skew w based on key stratum structurek, calculation formula are as follows:
The invention has the following beneficial effects: The present invention gives based on the earth's surface skewness subsidence factor of key stratum structure
Calculation method adopts a rigorous approach, accurately, simply, for the back production of coal mine work overlying strata top plate variation and surface subsidence safely identify it is pre-
It surveys and provides according to and suggest.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to embodiment.
Embodiment
Present embodiments provide a kind of earth's surface skewness subsidence factor pre-judging method based on key stratum structure, including following step
It is rapid:
Step 1, simply supported beam basic model is parsed, the primary fracture angle θ of key stratum structure is calculated1:
Field test determines parameter values, comprising: freely-supported beam length L, the height h of the rectangular section of key stratum structure, it is single
Position thickness simply supported beam coboundary suffered by equally distributed load q effect, beam support in both ends, branch pressure-bearing counter-force be by
The form for the shearing being distributed in the interface of both ends acts on beam, disregards self weight, centered on the center of gravity of simply supported beam, in conjunction with ready-made
The position of test confirmation breaking point and coordinate, using level along the direction of narrow beam as x-axis, direction vertically downward is y-axis, breaking point
Coordinate be (x, y)；
According to damage variable correction formula and base object model first weighting principle, the primary fracture angle of key stratum structure is calculated,
Calculation formula are as follows:
Step 2, cantilever beam basic model is parsed, the period break corner θ of key stratum structure is calculated2:
Field test determines parameter values, comprising: cantilever beam length L, the height h of the rectangular section of key stratum structure, it is single
The effect of suffered tangential distribution power q on the cantilever beam right side of position thickness, beam support disregards self weight in left end, in conjunction with ready-made examination
Position and the coordinate for testing confirmation breaking point, centered on the left end of cantilever beam, horizontal along the direction of cantilever beam is x-axis, vertically to
Under direction be y-axis, the coordinate (x, y) of breaking point；
According to damage variable correction formula and base object model periodic weighting principle, the period break corner of key stratum structure is calculated,
Calculation formula are as follows:
Step 3, the surface subsidence coefficient of skew w based on key stratum structure is parsedk:
According to engineering practice, the numerical value of basic parameter is determined, the limit sinking displacement amount w including key stratum structure0、
Working seam is to the average vertical distance ∑ h ' of position of key stratum, key stratum total length L, position of key stratum away from earth's surface vertical depth
h2, coal working face average mining height M；
Calculate the surface subsidence coefficient of skew w based on key stratum structurek, calculation formula are as follows:
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (1)
1. a kind of earth's surface skewness subsidence factor pre-judging method based on key stratum structure, which comprises the following steps:
Step 1, simply supported beam basic model is parsed, the primary fracture angle θ of key stratum structure is calculated1:
Field test determines parameter values, comprising: the freely-supported beam length L of the rectangular section of key stratum structure, height h, unit are thick
The effect of equally distributed load q suffered by the coboundary of the simply supported beam of degree, for beam support in both ends, branch pressure-bearing counter-force is by distribution
It is acted on beam in the form of the shearing in the interface of both ends, disregards self weight, centered on the center of gravity of simply supported beam, in conjunction with ready-made test
Position and the coordinate for confirming breaking point, using level along the direction of narrow beam as x-axis, direction vertically downward is y-axis, the seat of breaking point
It is designated as (x, y)；
According to damage variable correction formula and base object model first weighting principle, the primary fracture angle of key stratum structure is calculated, is calculated
Formula are as follows:
Step 2, cantilever beam basic model is parsed, the period break corner θ of key stratum structure is calculated2:
Field test determines parameter values, comprising: cantilever beam length L, the height h of the rectangular section of key stratum structure, unit are thick
The effect of suffered tangential distribution power q, beam support disregard self weight in left end on the cantilever beam right side of degree, true in conjunction with ready-made test
Position and the coordinate for recognizing breaking point, centered on the left end of cantilever beam, level is x-axis along the direction of cantilever beam, vertically downward
Direction is y-axis, the coordinate (x, y) of breaking point；
According to damage variable correction formula and base object model periodic weighting principle, the period break corner of key stratum structure is calculated, is calculated
Formula are as follows:
Step 3, the surface subsidence coefficient of skew w based on key stratum structure is parsedk:
According to engineering practice, the numerical value of basic parameter is determined, comprising: the limit sinking displacement amount w of key stratum structure0, exploitation
Coal seam is to the average vertical distance ∑ h ' of position of key stratum, key stratum total length L, position of key stratum away from earth's surface vertical depth h2、
The average mining height M of coal working face；
Calculate the surface subsidence coefficient of skew w based on key stratum structurek, calculation formula are as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032287.9A CN109635508B (en) | 2019-01-14 | 2019-01-14 | Surface deviation state sinking coefficient prejudging method based on key layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032287.9A CN109635508B (en) | 2019-01-14 | 2019-01-14 | Surface deviation state sinking coefficient prejudging method based on key layer structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109635508A true CN109635508A (en) | 2019-04-16 |
| CN109635508B CN109635508B (en) | 2022-08-12 |
Family
ID=66060758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910032287.9A Expired - Fee Related CN109635508B (en) | 2019-01-14 | 2019-01-14 | Surface deviation state sinking coefficient prejudging method based on key layer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109635508B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112711847A (en) * | 2020-12-28 | 2021-04-27 | 西安科技大学 | Method for determining surface subsidence coefficients of key layer at different positions of overlying strata |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007009558A (en) * | 2005-06-30 | 2007-01-18 | Shimizu Corp | Ground/construction subsidence quantity predictive method and program |
| CN103791884A (en) * | 2014-01-24 | 2014-05-14 | 安徽理工大学 | Research method of integration rule for coal mining overlying strata and ground surface movement deformation |
| CN103902780A (en) * | 2014-04-08 | 2014-07-02 | 中国矿业大学 | Method for predicting deformation of solid-filled coal mining surfaces |
| CN104123454A (en) * | 2014-07-18 | 2014-10-29 | 青岛理工大学 | Method for predicating ground surface settlement caused by underground excavation of single-joint hard rock |
| CN105509708A (en) * | 2015-11-21 | 2016-04-20 | 西安科技大学 | A method of determining a surface subsidence coefficient for coal mining under a loess gully region |
| CN105956304A (en) * | 2016-05-05 | 2016-09-21 | 西安科技大学 | Method and apparatus for determining rated bearing load of bracket for working face with large mining height in coal mine |
| CN106446379A (en) * | 2016-09-13 | 2017-02-22 | 河南理工大学 | Probability-integral-method based surface movement deformation predication method for any mining working faces |
| CN107013209A (en) * | 2017-05-04 | 2017-08-04 | 中国矿业大学 | The Forecasting Methodology of working face overlying stratiform Rock Displacement Movement under the conditions of mining influence |
| US20170315249A1 (en) * | 2016-04-29 | 2017-11-02 | Rodrick Myers | Method and system for stacking fracture prediction |
| CN108086977A (en) * | 2017-12-14 | 2018-05-29 | 中国矿业大学 | A kind of coal seam prevents water-resisting floor coal-mining method for water-bearing layer |
| CN108399302A (en) * | 2018-03-06 | 2018-08-14 | 西安科技大学 | A kind of method of discrimination of shallow buried coal seam high-seam working face coal wall caving |
| CN108536947A (en) * | 2018-04-02 | 2018-09-14 | 内蒙古科技大学 | A kind of equidistant bottom anchor tunnel stratiform bottom plate appoints the pre-judging method for being layered and heaving unstability |
| CN108825236A (en) * | 2018-05-28 | 2018-11-16 | 西安科技大学 | A kind of shallow embedding coal seam group near interval roof periodic presses Support Resistance to determine method |
| US20180348400A1 (en) * | 2017-05-30 | 2018-12-06 | Sheng-Yuan Hsu | Method and System for Creating and Using a Subsurface Model in Hydrocarbon Operations |
-
2019
- 2019-01-14 CN CN201910032287.9A patent/CN109635508B/en not_active Expired - Fee Related
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007009558A (en) * | 2005-06-30 | 2007-01-18 | Shimizu Corp | Ground/construction subsidence quantity predictive method and program |
| CN103791884A (en) * | 2014-01-24 | 2014-05-14 | 安徽理工大学 | Research method of integration rule for coal mining overlying strata and ground surface movement deformation |
| CN103902780A (en) * | 2014-04-08 | 2014-07-02 | 中国矿业大学 | Method for predicting deformation of solid-filled coal mining surfaces |
| CN104123454A (en) * | 2014-07-18 | 2014-10-29 | 青岛理工大学 | Method for predicating ground surface settlement caused by underground excavation of single-joint hard rock |
| CN105509708A (en) * | 2015-11-21 | 2016-04-20 | 西安科技大学 | A method of determining a surface subsidence coefficient for coal mining under a loess gully region |
| US20170315249A1 (en) * | 2016-04-29 | 2017-11-02 | Rodrick Myers | Method and system for stacking fracture prediction |
| CN105956304A (en) * | 2016-05-05 | 2016-09-21 | 西安科技大学 | Method and apparatus for determining rated bearing load of bracket for working face with large mining height in coal mine |
| CN106446379A (en) * | 2016-09-13 | 2017-02-22 | 河南理工大学 | Probability-integral-method based surface movement deformation predication method for any mining working faces |
| CN107013209A (en) * | 2017-05-04 | 2017-08-04 | 中国矿业大学 | The Forecasting Methodology of working face overlying stratiform Rock Displacement Movement under the conditions of mining influence |
| US20180348400A1 (en) * | 2017-05-30 | 2018-12-06 | Sheng-Yuan Hsu | Method and System for Creating and Using a Subsurface Model in Hydrocarbon Operations |
| CN108086977A (en) * | 2017-12-14 | 2018-05-29 | 中国矿业大学 | A kind of coal seam prevents water-resisting floor coal-mining method for water-bearing layer |
| CN108399302A (en) * | 2018-03-06 | 2018-08-14 | 西安科技大学 | A kind of method of discrimination of shallow buried coal seam high-seam working face coal wall caving |
| CN108536947A (en) * | 2018-04-02 | 2018-09-14 | 内蒙古科技大学 | A kind of equidistant bottom anchor tunnel stratiform bottom plate appoints the pre-judging method for being layered and heaving unstability |
| CN108825236A (en) * | 2018-05-28 | 2018-11-16 | 西安科技大学 | A kind of shallow embedding coal seam group near interval roof periodic presses Support Resistance to determine method |
Non-Patent Citations (4)
| Title |
|---|
| A ASADI: ""Profiling Function of Surface Subsidence Prediction in Mining Inclined Coal Seams"", 《JOURNAL OF MINING SCIENCE》, 31 December 2004 (2004-12-31), pages 142 - 146 * |
| CHANG,ZQ: ""A novel ground surface subsidence prediction model for sub-critical mining in the geological condition of a thick alluvium layer"", 《FRONTIERS OF EARTH SCIENCE》, 20 May 2015 (2015-05-20), pages 330 - 341 * |
| 夏小刚: ""采动岩层与地表移动的"四带"模型研究"", 《中国博士学位论文全文数据库》, 31 January 2013 (2013-01-31), pages 021 - 2 * |
| ***: ""浅埋煤层采场覆岩破坏及地表移动规律研究"", 《中国博士学位论文全文数据库》, 31 December 2017 (2017-12-31), pages 021 - 5 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112711847A (en) * | 2020-12-28 | 2021-04-27 | 西安科技大学 | Method for determining surface subsidence coefficients of key layer at different positions of overlying strata |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109635508B (en) | 2022-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107092740A (en) | A kind of old goaf residual deformation method for predicting of severe inclined thick coal seam | |
| CN103352455A (en) | Monitoring method of bottom soil heave of excavation foundation pit | |
| CN107728228A (en) | Coal mining under water bodies overlying strata water flowing fractured zone development height method for predicting | |
| CN111737895B (en) | Method for dynamically evaluating stability of top plate of underground goaf of strip mine | |
| CN102330423A (en) | Method for evaluating stability of newly built railway foundation on goaf | |
| CN109931061B (en) | Method for reserving coal pillars of up-and-down alternative collaborative mining sections of close-distance coal seam | |
| CN104763464B (en) | Predicting method of filling coal mining ground surface deformation based on continuous curved beam rock stratum structure | |
| CN107013209A (en) | The Forecasting Methodology of working face overlying stratiform Rock Displacement Movement under the conditions of mining influence | |
| Li et al. | Fuzzy probability measures (FPM) based non-symmetric membership function: Engineering examples of ground subsidence due to underground mining | |
| CN102619531A (en) | Multi-step sequence construction deformation control method for shallow-buried tunnel with big cross section | |
| CN106055868B (en) | A kind of method and device of determining half-edge coal seam fully mechanized coal face support load | |
| Blachowski et al. | Numerical modelling of rock mass deformation in sublevel caving mining system | |
| CN104866914A (en) | Method for predicting maximum height of filling mining diversion fissure zone | |
| Yi et al. | An influence function method based subsidence prediction program for longwall mining operations in inclined coal seams | |
| CN109635508A (en) | A kind of earth's surface skewness subsidence factor pre-judging method based on key stratum structure | |
| CN114382483A (en) | Method for preventing and controlling strong mine pressure of hard roof working face under left coal pillar | |
| CN108664698B (en) | A kind of dynamic disturbance adds the residual exploiting field Upward mining feasibility determination method of tool post of unloading | |
| CN112901169B (en) | Impact instability judging and anti-impact mining method for asymmetrical island working surface | |
| Strzalkowski et al. | Analytical and numerical method assessing the risk of sinkholes formation in mining areas | |
| CN106157160A (en) | A kind of inclined seam filling mining analysis method to ground subgrade settlement | |
| CN108150171A (en) | A kind of great burying thin bedrock area high seam longwall top coal caving pressure rack water-inrush prevention method | |
| CN117113715A (en) | Design method for preventing and controlling rock burst of mining area by filling coal-based solid wastes | |
| Sidorenko et al. | Substantiation of parameters of the technology of mining thick flat beds by underground method with splitting the bed into two | |
| Lu et al. | Monitoring and analysis of ground subsidence and backfill stress distribution in Jinchuan Mine, China | |
| CN111598355B (en) | Hierarchical prediction method for ore pressure of multi-layer hard rock stratum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |