CN114017103A - Longwall roadway-by-roadway cemented filling coal face parameter design method - Google Patents
Longwall roadway-by-roadway cemented filling coal face parameter design method Download PDFInfo
- Publication number
- CN114017103A CN114017103A CN202111209269.7A CN202111209269A CN114017103A CN 114017103 A CN114017103 A CN 114017103A CN 202111209269 A CN202111209269 A CN 202111209269A CN 114017103 A CN114017103 A CN 114017103A
- Authority
- CN
- China
- Prior art keywords
- roadway
- filling
- determining
- longwall
- coal
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000013461 design Methods 0.000 title claims abstract description 25
- 238000005065 mining Methods 0.000 claims abstract description 23
- 238000005429 filling process Methods 0.000 claims abstract description 7
- 230000005641 tunneling Effects 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The application discloses a longwall roadway-by-roadway cemented filling coal face parameter design method, which is characterized in that working face parameter design is completed by determining width, length, spacing, filling pipeline arrangement mode and filling rate parameters of filling roadways; the width and the length of the roadway are determined by filling coal mining equipment and technology and roadway stability; the distance between filling roadways is determined by the position of a mining induced stress concentration area; the arrangement mode of the filling pipeline is determined by the shape of the roadway and the filling process; the fullness is determined by the surface building protection rating. The method has important significance for improving the safety coefficient of the working face, improving the production efficiency of the working face and perfecting the management of the working face, and simultaneously perfects the filling coal mining theory and achieves the aim of safe and efficient mining. The method is simple to implement and has good popularization value.
Description
Technical Field
The invention belongs to the technical field of filling coal mining, relates to a parameter design method for an underground coal mine mining working face, and particularly relates to a parameter design method for a longwall roadway-by-roadway cemented filling coal mining working face.
Background
The longwall lane-by-lane filling coal mining technology has long-foot development along with the development of the filling coal mining technology, and by utilizing longwall lane-by-lane filling coal mining, a working face can be flexibly arranged, the coal resource extraction rate is improved, and meanwhile, a better filling effect is realized. However, currently, there is no complete working plane parameter design method, which is mostly a specific example analyzed according to specific situations, and technical operators have no unified working plane parameter design idea. Therefore, the design method for determining the parameters of the working surface is necessary.
Disclosure of Invention
The technical problem to be solved is as follows:
aiming at the defects of the prior art, the method solves the problems that the existing method for designing the parameters of the working face is not complete, the method is a specific example analyzed according to specific conditions, technical operators do not have a uniform design idea of the parameters of the working face, and the like; the method for designing the parameters of the longwall roadway-by-roadway cemented filling coal face is provided, and a set of design method is provided for parameter design of the filling coal face.
The technical scheme is as follows:
in order to achieve the purpose, the application is realized by the following technical scheme:
a longwall roadway-by-roadway cemented filling coal face parameter design method comprises the following steps:
step one, determining the width of a filling roadway: determining the type of the fully-mechanized excavating machine, the type of the excavating and anchoring integrated machine or the continuous mining machine and the stability of the overlying rock stratum of the filling roadway together;
secondly, determining the length of a filling roadway: determining according to the size of the coal mining equipment, the filling process, the total width of a circulation roadway of the filling process, the length of a shuttle car and the maximum transportation distance;
thirdly, determining the space between filling roadways: determining according to the position of the mining stress concentration area;
fourthly, determining the arrangement mode of the filling pipeline: determining according to the shape of the roadway and the filling process;
and fifthly, determining the filling rate of filling: determined according to the surface building protection requirements.
Further, the width of the filling roadway is determined in the first step, and the width of the roadway is determined according to the range of single tunneling width service of the coal mining equipment:
based on a simplified mechanical model and
and obtaining the stress condition above the filling roadway of the working face by solving the bending subsidence equation, thereby obtaining the specific width of the filling roadway of the working face.
Further, the length of the filling roadway is determined in the second step according to the following calculation formula
l1+l2+l3+lShuttle max＝l5+l6
In the formula: l1Width of coal pillar left in filling roadway,/2Length of the machine body of the tunneling and anchoring integrated machine l3-the length of the shuttle car body,
lshuttle maxMaximum shuttle transport distance, /)4One circulation lane total width, /)5-the jump-pick spacing is,
l6-filling the maximum length of the roadway;
and calculating to obtain the maximum length of the filling roadway.
Furthermore, the space between filling roadways is determined in the third step, and FLAC is adopted3DAnd determining the stress distribution range by using numerical simulation software so as to determine the roadway spacing.
Further, determining the arrangement mode of the filling pipelines in the fourth step, and dividing the pipeline arrangement into a single inclined roadway filling pipeline arrangement mode according to the condition of a working surface, namely that a retaining wall is arranged on the top; the arrangement mode of the filling pipelines of the monoclinic laneway is that the coal blocking pillars are arranged on the monoclinic laneway; arrangement mode of filling pipelines of the horizontal roadway; the up-and-down roadway filling pipeline is arranged in a mode that the highest point is positioned at two ends of the roadway; the up-and-down roadway filling pipeline arrangement modes are five modes with the highest point in the middle of the roadway.
Further, determining the filling rate of filling in the fifth step, determining the filling rate to be 85% -95% according to the protection requirement of the surface building, and ensuring that the filling rate requirement is met through the strength of the filling body.
Has the advantages that:
the application provides a longwall roadway-by-roadway cemented filling coal face parameter design method, which has the following beneficial effects compared with the prior art:
1. the invention can obtain a set of complete longwall roadway-by-roadway cemented filling coal face parameter design method, and is beneficial to technical operators to quickly and accurately determine the key parameters of the working face of a mine mined by the same or similar method, thereby being beneficial to the safe and efficient mining of the mine.
2. The patent design method disclosed by the invention is simple to operate, high in applicability, capable of guiding the actual engineering design on site and the type selection of key equipment, and wide in application prospect.
Description of the drawings:
FIG. 1 is a flow chart of the working face parameter design of the present invention.
FIG. 2 is a simplified mechanical model of a fill-ceiling system of the present invention, whereinaFor half the advance length of the work surface, lbFor recovering the length of the filling working surface of the coal pillar, q is the topThe plate bears the uniform load, k, of the overburdenbW (x) is the deflection of the top plate for the packing body elastic foundation coefficient.
Fig. 3 is a coal mining schematic diagram of the filling roadway of the invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the actual situation of a mine. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1:
the longwall roadway-by-roadway cemented filling coal face parameter design method comprises the following steps:
step one, determining the width of a filling roadway: determining the width of the roadway to be 5m within the range of single tunneling width service according to the model of the tunneling and anchoring all-in-one machine; simplified mechanical model in conjunction with FIG. 2, where laFor half the advance length of the work surface, lbFor recovering the length of the filling working face of the coal pillar, q is the uniform load of the top plate bearing the overlying strata, kbThe elastic foundation coefficient of the filling body, w (x) is the deflection of the top plate according to the formula
Calculating stress condition distribution, and determining that the width of 5m meets the stress condition of the overburden;
secondly, determining the length of a filling roadway: according to the working angle range of the fully-mechanized excavating machine, the included angle between the excavated filling roadway and the working face crossheading is determined to be 135 degrees, the excavating and coal discharging are carried out in a jump mining mode, every four filling roadways are a cycle, the transfer crusher and the rubber belt conveyor are arranged after two cycles, each filling roadway is provided with a coal pillar of 4.5m as a filling retaining wall, the length of the roadway is determined, the maximum transportation distance of the selected shuttle car is 200m, the following calculation formula can be known according to figure 3,
the maximum transportation distance of the selected shuttle car is 200m, and the maximum length of the filling roadway is calculated as follows:
l1+l2+l3+lshuttle max＝l5+l6
In the formula: l1The width of a coal pillar reserved in the filling roadway is 4.5 m;
l2the length of the machine body of the tunneling and anchoring integrated machine is 11.6 m;
l3shuttle car body length, 9.14 m;
lshuttle max-shuttle maximum transport distance, 200 m;
l4-one circulation lane total width, 43.2 m;
l5-the jump-pick spacing is,
taking 61.1 m;
l6-maximum length of filled roadway, m;
calculating to obtain the maximum length of the filling roadway of 164 m;
thirdly, determining the space between filling roadways: using FLAC3DNumerical simulation software, after a single roadway is tunneled, mining destroys the original balance state of an original rock stress field, a stress reduction area is generated in a roadway top bottom plate, a certain range of two sides of the roadway is a supporting stress influence area, stress concentration is generated on coal walls on two sides, a stress peak value is reached at a position which is about 3.5m away from the roadway sides, the supporting stress peak value of an entity coal side is 18.62MPa, and the peak stress concentration coefficient is 1.26; at a position 15m away from the roadway side, the vertical stress is reduced to 14.92-14.79 MPa, the stress in the coal body outside the range of 15m approaches to the original rock stress of 14.75MPa, the influence of the advanced support pressure generated by a roadway 5.0m away from the roadway side can be avoided, and the roadway-driving distance of a filling roadway is finally determined to be 3 times of roadway width, namely 15.0m, by combining the roadway-by-roadway cemented filling mining process;
fourthly, determining the arrangement mode of the filling pipeline: the mine is a single inclined roadway, the retaining wall is positioned at the lower position, and the pipeline arrangement is set to be a single inclined roadway filling pipeline arrangement mode according to the condition of a working face, namely, the coal blocking pillars are arranged on the upper portion;
and fifthly, determining the filling rate of filling: according to the protection requirement of surface buildings, the filling rate is determined to be 95% within the I-level damage grade according to the estimated calculation of surface subsidence, and the strength of the filling body is ensured to meet the requirement of the filling rate.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A longwall roadway-by-roadway cemented filling coal face parameter design method is characterized by specifically comprising the following steps:
step one, determining the width of a filling roadway: determining the type of the fully-mechanized excavating machine, the type of the excavating and anchoring integrated machine or the continuous mining machine and the stability of the overlying rock stratum of the filling roadway together;
secondly, determining the length of a filling roadway: determining according to the size of the coal mining equipment, the filling process, the total width of a circulation roadway of the filling process, the length of a shuttle car and the maximum transportation distance;
thirdly, determining the space between filling roadways: determining according to the position of the mining stress concentration area;
fourthly, determining the arrangement mode of the filling pipeline: determining according to the shape of the roadway and the filling process;
and fifthly, determining the filling rate of filling: determined according to the surface building protection requirements.
2. The longwall roadway-by-roadway cemented filling coal face parameter design method according to claim 1, characterized in that: determining the width of a filling roadway in the first step, and determining the width of the roadway according to the range of single tunneling width service of the coal mining equipment:
based on a simplified mechanical model and
and obtaining the stress condition above the filling roadway of the working face by solving the bending subsidence equation, thereby obtaining the specific width of the filling roadway of the working face.
3. The longwall roadway-by-roadway cemented filling coal face parameter design method according to claim 1, characterized in that: in the second step, the length of the filling roadway is determined according to the following calculation formula
l1+l2+l3+lShuttle max＝l5+l6
In the formula: l1Width of coal pillar left in filling roadway,/2Length of the machine body of the tunneling and anchoring integrated machine l3-the length of the shuttle car body,
lshuttle maxMaximum shuttle transport distance, /)4One circulation lane total width, /)5-the jump-pick spacing is,
l6-filling the maximum length of the roadway;
and calculating to obtain the maximum length of the filling roadway.
4. The longwall roadway-by-roadway cemented filling coal face parameter design method according to claim 1, characterized in that: in the third step, the distance between filling roadways is determined, and FLAC is adopted3DAnd determining the stress distribution range by using numerical simulation software so as to determine the roadway spacing.
5. The longwall roadway-by-roadway cemented filling coal face parameter design method according to claim 1, characterized in that: determining the arrangement mode of the filling pipelines in the fourth step, and dividing the pipeline arrangement into a monoclinic roadway filling pipeline arrangement mode, namely that a retaining wall is arranged on the monoclinic roadway filling pipeline arrangement mode according to the condition of a working surface; the arrangement mode of the filling pipelines of the monoclinic laneway is that the coal blocking pillars are arranged on the monoclinic laneway; arrangement mode of filling pipelines of the horizontal roadway; the up-and-down roadway filling pipeline is arranged in a mode that the highest point is positioned at two ends of the roadway; the up-and-down roadway filling pipeline arrangement modes are five modes with the highest point in the middle of the roadway.
6. The longwall roadway-by-roadway cemented filling coal face parameter design method according to claim 1, characterized in that: and determining the filling rate of filling in the fifth step, determining the filling rate to be 85% -95% according to the protection requirement of the surface building, and ensuring that the filling rate requirement is met through the strength of the filling body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209269.7A CN114017103A (en) | 2021-10-18 | 2021-10-18 | Longwall roadway-by-roadway cemented filling coal face parameter design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209269.7A CN114017103A (en) | 2021-10-18 | 2021-10-18 | Longwall roadway-by-roadway cemented filling coal face parameter design method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114017103A true CN114017103A (en) | 2022-02-08 |
Family
ID=80056484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111209269.7A Pending CN114017103A (en) | 2021-10-18 | 2021-10-18 | Longwall roadway-by-roadway cemented filling coal face parameter design method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114017103A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365634A (en) * | 2023-11-21 | 2024-01-09 | 中国矿业大学 | Coal-based solid waste and power plant flue gas collaborative lane-by-lane filling treatment method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821515A (en) * | 2014-02-20 | 2014-05-28 | 山西晋煤集团技术研究院有限责任公司 | Double-unit face filling and mining technology |
| CN103993881A (en) * | 2014-05-21 | 2014-08-20 | 中国矿业大学 | Long-wall roadway type cemented filling mining method |
| WO2019218546A1 (en) * | 2018-05-15 | 2019-11-21 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Mining method for inclined medium-thick ore body |
| US20200378255A1 (en) * | 2018-09-04 | 2020-12-03 | China University Of Mining And Technology | Internally injected replacement support room-type coal pillar recovery method |
| CN112253115A (en) * | 2020-10-14 | 2021-01-22 | 中国矿业大学(北京) | Near-horizontal coal seam roadway type cemented filling mining method |
| CN113482711A (en) * | 2021-08-16 | 2021-10-08 | 中国矿业大学(北京) | Pre-filling method for reducing end mining coal pillar |
-
2021
- 2021-10-18 CN CN202111209269.7A patent/CN114017103A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821515A (en) * | 2014-02-20 | 2014-05-28 | 山西晋煤集团技术研究院有限责任公司 | Double-unit face filling and mining technology |
| CN103993881A (en) * | 2014-05-21 | 2014-08-20 | 中国矿业大学 | Long-wall roadway type cemented filling mining method |
| WO2019218546A1 (en) * | 2018-05-15 | 2019-11-21 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Mining method for inclined medium-thick ore body |
| US20200378255A1 (en) * | 2018-09-04 | 2020-12-03 | China University Of Mining And Technology | Internally injected replacement support room-type coal pillar recovery method |
| CN112253115A (en) * | 2020-10-14 | 2021-01-22 | 中国矿业大学(北京) | Near-horizontal coal seam roadway type cemented filling mining method |
| CN113482711A (en) * | 2021-08-16 | 2021-10-08 | 中国矿业大学(北京) | Pre-filling method for reducing end mining coal pillar |
Non-Patent Citations (1)
| Title |
|---|
| 何志伟等: ""长壁逐巷胶结充填工作面关键参数设计"", 《矿业研究与开发》, vol. 41, no. 8, 31 August 2021 (2021-08-31), pages 22 - 30 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365634A (en) * | 2023-11-21 | 2024-01-09 | 中国矿业大学 | Coal-based solid waste and power plant flue gas collaborative lane-by-lane filling treatment method |
| CN117365634B (en) * | 2023-11-21 | 2024-05-10 | 中国矿业大学 | Coal-based solid waste and power plant flue gas collaborative lane-by-lane filling treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103161480B (en) | Initiatively support the method for roadside packing gob side entry retaining | |
| CN105649631B (en) | A kind of efficient mining methods of the mechanization of slight slope and thin ore body | |
| CN108194088A (en) | A kind of soft top coal layer cuts top release gob-side entry retaining method without explosion | |
| CN104532818A (en) | Treatment method for strip mine goaf | |
| CN103902780A (en) | Method for predicting deformation of solid-filled coal mining surfaces | |
| CN103573287B (en) | The other soft strong two-layer compound supporting flexible material thickness defining method in gob side entry retaining lane | |
| WO2020010696A1 (en) | Method for recovering room coal pillars through reserved roadway cemented filling | |
| CN103046955A (en) | Large-range goaf group filling method | |
| CN104775816A (en) | Isolated grouting-filling mining method for overburden rock without village migration under cut-side local pressed-coal conditions | |
| CN106988744B (en) | A kind of lane side " prop-obturation " coordination supporting gob-side entry retaining method | |
| CN104500070A (en) | Continuous coal mining machine paste filling mining method | |
| CN105464700A (en) | Method for determining length of filling segment of fully mechanized mining and filling mixed mining working face | |
| CN103557001B (en) | A kind of low section high oper cylinler shrink afterwards filling mining method | |
| CN109763821A (en) | A kind of compound shield lane method of dynamic pressure exploiting field main entry | |
| CN104863588A (en) | Advanced pier column pre-arranging gob-side entry retaining method | |
| CN104533419A (en) | Method for partial recovery of residual coal from wide coal pillar | |
| CN203822311U (en) | Advanced detection and pre-reinforcing structure for shield tunnel crossing existing station construction | |
| CN114017103A (en) | Longwall roadway-by-roadway cemented filling coal face parameter design method | |
| CN112302663B (en) | Milling and blasting combined construction method for water-rich desertification dolomite formation tunnel | |
| Tian et al. | Stability control of a roadway surrounding rock during the cutting and pressure relief of a coal‐bearing roof at a shallow mining depth | |
| CN110714759B (en) | Method for mining lost coal | |
| Zhang et al. | Study on Reasonable Chain Pillar Size in a Thick Coal Seam | |
| US20230030467A1 (en) | Method for slope geological disaster treatment and mineral resource recovery | |
| CN109372519B (en) | Tunneling construction method for hexagonal section of roadway | |
| CN105587321A (en) | Collapse column bypassing extraction process |
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 | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 272101 No. 298, Fushan South Road, Zoucheng City, Jining City, Shandong Province Applicant after: Yankuang Energy Group Co.,Ltd. Applicant after: CHINA University OF MINING AND TECHNOLOGY Address before: 272101 No. 298, Fushan South Road, Zoucheng City, Jining City, Shandong Province Applicant before: YANZHOU COAL MINING Co.,Ltd. Country or region before: China Applicant before: CHINA University OF MINING AND TECHNOLOGY |