CN112627824B - Safe and efficient mining method for winter operation of wheel bucket excavator in alpine region - Google Patents
Safe and efficient mining method for winter operation of wheel bucket excavator in alpine region Download PDFInfo
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- CN112627824B CN112627824B CN202011478352.XA CN202011478352A CN112627824B CN 112627824 B CN112627824 B CN 112627824B CN 202011478352 A CN202011478352 A CN 202011478352A CN 112627824 B CN112627824 B CN 112627824B
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- 238000005065 mining Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005336 cracking Methods 0.000 claims abstract description 16
- 238000009412 basement excavation Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The embodiment of the invention provides a safe and efficient mining method for a wheel bucket excavator in a alpine region in winter, which comprises the following steps: determining amplitude collection width, dividing a preset area according to the amplitude collection width, and dividing the preset area into a plurality of areas to be mined, wherein the areas to be mined are in line with the amplitude collection width; pre-cracking is formed in two adjacent areas to be mined, and the depth of the pre-cracking exceeds the thickness of the step frozen roof at the current area to be mined; excavating a pre-crack, and respectively covering the excavated earthwork on two sides of the pre-crack; bucket wheel excavators sequentially mine the area to be mined between two adjacent pre-cracks. Through optimizing the exploitation scheme, the hidden danger and the defect brought by the winter operation of the wheel bucket excavator in the existing alpine region are mainly solved, the exploitation efficiency is improved, and the operation safety is ensured.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a safe and efficient mining method for a wheel bucket excavator in a alpine region in winter operation.
Background
At present, in the application of continuous processes of countries in the world, especially in alpine regions, the working time of a bucket-wheel excavator is 9 months, and the production is stopped for 3 months in a period of time of rest from 12 months each year to 2 months each year. The working period is 11 months, and the working face umbrella eaves are formed and increased along with the reduction of the air temperature, so that the existing bucket-wheel excavator in the alpine region only can simply mine according to regulations one by one. The existing operation mode has the following defects:
1. the boundary of each frame is very easy to cause the disclosure of the step umbrella eave;
2. the umbrella eave slides downwards to cause the step ledge to smash the equipment;
3. when mining at the mining boundary, the damage to the excavator bucket teeth, bucket arms and other parts is serious;
4. the production efficiency is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a safe and efficient mining method for the winter operation of a bucket wheel excavator in a alpine region, which comprises the following specific technical scheme:
the embodiment of the invention provides a safe and efficient mining method for a wheel bucket excavator in a alpine region in winter, which comprises the following steps:
determining amplitude collection width, dividing a preset area according to the amplitude collection width, and dividing the preset area into a plurality of areas to be mined, wherein the areas to be mined are in line with the amplitude collection width;
pre-cracking is formed in two adjacent areas to be mined, and the depth of the pre-cracking exceeds the thickness of the step frozen roof at the current area to be mined;
excavating a pre-crack, and respectively covering the excavated earthwork on two sides of the pre-crack;
bucket wheel excavators sequentially mine the area to be mined between two adjacent pre-cracks.
Further, the width of the picking frame ranges from 10 m to 50m.
Further, determining the amplitude-picking width, and dividing the predetermined area according to the amplitude-picking width includes:
taking the width of the acquired frames as a limit, planning the limit of the width of the acquired frames which are parallel to each other, and generating a planning drawing;
and dividing the area on the total area to be mined according to the planning drawing.
Further, the width of the pre-slit ranges from 1 to 2m.
Further, in the pre-fracture excavation, the adopted tool is an engineering excavator.
The embodiment of the invention provides a safe and efficient mining method for a wheel bucket excavator in a alpine region in winter, which comprises the following steps: determining amplitude collection width, dividing a preset area according to the amplitude collection width, and dividing the preset area into a plurality of areas to be mined, wherein the areas to be mined are in line with the amplitude collection width; pre-cracking is formed in two adjacent areas to be mined, and the depth of the pre-cracking exceeds the thickness of the step frozen roof at the current area to be mined; excavating a pre-crack, and respectively covering the excavated earthwork on two sides of the pre-crack; bucket wheel excavators sequentially mine the area to be mined between two adjacent pre-cracks. Through optimizing the exploitation scheme, the hidden danger and the defect brought by the winter operation of the wheel bucket excavator in the existing alpine region are mainly solved, the exploitation efficiency is improved, and the operation safety is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic diagram of safe and efficient mining distribution of a bucket wheel excavator in a alpine region in winter operation.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, the embodiment of the invention provides a safe and efficient mining method for a bucket wheel excavator in a alpine region in winter, which comprises the following steps:
s110, determining amplitude collection width, dividing a preset area according to the amplitude collection width, and dividing the preset area into a plurality of areas to be mined, wherein the areas to be mined are in accordance with the amplitude collection width;
s120, opening pre-cracks in two adjacent areas to be mined, wherein the depth of the pre-cracks exceeds the thickness of the frozen top of the step at the current area to be mined;
s130, excavating a pre-crack, and respectively covering the two sides of the pre-crack with the excavated earthwork;
s140, sequentially mining the region to be mined between two adjacent pre-cracks by using a bucket-wheel excavator.
Specifically, the scheme is a boundary pre-splitting mining method which is a method for maintaining mining efficiency and ensuring safety and stability during winter operation by applying a continuous process of a bucket wheel excavator in alpine regions.
The first step: determining the width of the mining width according to the mining parameters of the bucket wheel excavator;
and a second step of: excavating a pre-crack between every two mining belts, wherein the depth of the pre-crack is preferably 1-2 meters when penetrating through the frozen top thickness of the step;
and a third step of: earthwork formed by excavating the pre-cracking seam is respectively covered on two sides of the pre-cracking seam to be used as an earth covering heat insulation layer of the edge of the excavating belt;
fourth step: the wheel bucket excavator normally excavates according to design instructions.
The wheel bucket excavator boundary pre-splitting mining method has the following advantages:
1. ensuring that the mining efficiency of the continuous process of the bucket wheel excavator is not reduced after the air temperature is reduced and the working surface is formed into frozen tops;
2. the winter operation time can be properly prolonged, and the annual operation time and the production capacity of the system can be effectively improved;
3. the method is simple and easy to implement, and has strong operability;
the risk of equipment damage caused by the downward sliding of the step ledge and the umbrella eave is reduced.
The embodiment of the invention provides a safe and efficient mining method for a wheel bucket excavator in a alpine region in winter, which comprises the following steps: determining amplitude collection width, dividing a preset area according to the amplitude collection width, and dividing the preset area into a plurality of areas to be mined, wherein the areas to be mined are in line with the amplitude collection width; pre-cracking is formed in two adjacent areas to be mined, and the depth of the pre-cracking exceeds the thickness of the step frozen roof at the current area to be mined; excavating a pre-crack, and respectively covering the excavated earthwork on two sides of the pre-crack; bucket wheel excavators sequentially mine the area to be mined between two adjacent pre-cracks. Through optimizing the exploitation scheme, the hidden danger and the defect brought by the winter operation of the wheel bucket excavator in the existing alpine region are mainly solved, the exploitation efficiency is improved, and the operation safety is ensured.
In one embodiment, the pick width ranges from 10 to 50m.
In one embodiment, determining the amplitude-picking width and dividing the predetermined area according to the amplitude-picking width includes:
taking the width of the acquired frames as a limit, planning the limit of the width of the acquired frames which are parallel to each other, and generating a planning drawing;
and dividing the area on the total area to be mined according to the planning drawing.
In one embodiment, the width of the pre-slit ranges from 1 to 2m.
In one embodiment, the tool used in excavating the pre-fracture is an engineering excavator.
The embodiment of the invention provides a safe and efficient mining method for a wheel bucket excavator in a alpine region in winter, which comprises the following steps: determining amplitude collection width, dividing a preset area according to the amplitude collection width, and dividing the preset area into a plurality of areas to be mined, wherein the areas to be mined are in line with the amplitude collection width; pre-cracking is formed in two adjacent areas to be mined, and the depth of the pre-cracking exceeds the thickness of the step frozen roof at the current area to be mined; excavating a pre-crack, and respectively covering the excavated earthwork on two sides of the pre-crack; bucket wheel excavators sequentially mine the area to be mined between two adjacent pre-cracks. Through optimizing the exploitation scheme, the hidden danger and the defect brought by the winter operation of the wheel bucket excavator in the existing alpine region are mainly solved, the exploitation efficiency is improved, and the operation safety is ensured.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (4)
1. The safe and efficient mining method for the winter operation of the bucket wheel excavator in the alpine region is characterized by comprising the following steps of:
determining amplitude collection width, dividing a preset area according to the amplitude collection width, and dividing the preset area into a plurality of areas to be mined, wherein the areas to be mined are in line with the amplitude collection width;
pre-cracking is formed in two adjacent areas to be mined, and the depth of the pre-cracking exceeds the thickness of the step frozen roof at the current area to be mined;
pre-cracking the soil with the width of 1-2m, and covering the dug earthwork on two sides of the pre-cracking; bucket wheel excavators sequentially mine the area to be mined between two adjacent pre-cracks.
2. The method for safely and efficiently mining the wheel bucket excavator in the alpine region in winter operation according to claim 1, wherein the width of the mining width is in the range of 10-50m.
3. The method for safely and efficiently mining the wheel bucket excavator in the alpine region in winter operation according to claim 1, wherein determining the mining width and dividing the predetermined area according to the mining width comprises:
taking the width of the acquired frames as a limit, planning the limit of the width of the acquired frames which are parallel to each other, and generating a planning drawing;
and dividing the area on the total area to be mined according to the planning drawing.
4. The safe and efficient mining method for the winter operation of the wheel bucket excavator in the alpine region, which is characterized in that the adopted tool is an engineering excavator in the pre-crack excavation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011478352.XA CN112627824B (en) | 2020-12-15 | 2020-12-15 | Safe and efficient mining method for winter operation of wheel bucket excavator in alpine region |
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| CN202011478352.XA CN112627824B (en) | 2020-12-15 | 2020-12-15 | Safe and efficient mining method for winter operation of wheel bucket excavator in alpine region |
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| CN112627824B true CN112627824B (en) | 2023-07-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102278115A (en) * | 2011-06-27 | 2011-12-14 | 汉通建设集团有限公司 | High-efficiency safe environment-friendly mining method for rare shallow-buried ore layer in irregular strip-shaped distribution |
| CN107067333B (en) * | 2017-01-16 | 2022-12-20 | 长沙矿山研究院有限责任公司 | Method for monitoring stability of high-altitude and steep slope at high cold altitude |
| CN110779403B (en) * | 2019-09-25 | 2022-05-06 | 昆明理工大学 | Hole-by-hole initiation and presplitting blasting crack forming method for open deep hole step presplitting hole under complex environment |
| CN111255453B (en) * | 2020-03-10 | 2021-10-01 | 安徽理工大学 | Method for reducing ground surface subsidence range of underground mining area |
| CN111411964B (en) * | 2020-04-09 | 2022-04-08 | 华能伊敏煤电有限责任公司 | Wheel bucket excavator mining method for strip mine slope breaking area |
| CN111457802A (en) * | 2020-04-14 | 2020-07-28 | 西安闪光能源科技有限公司 | Method for breaking rock stratum of strip mine |
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