CN111411964B - Wheel bucket excavator mining method for strip mine slope breaking area - Google Patents
Wheel bucket excavator mining method for strip mine slope breaking area Download PDFInfo
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- CN111411964B CN111411964B CN202010273176.XA CN202010273176A CN111411964B CN 111411964 B CN111411964 B CN 111411964B CN 202010273176 A CN202010273176 A CN 202010273176A CN 111411964 B CN111411964 B CN 111411964B
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- 238000005065 mining Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009412 basement excavation Methods 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/30—Mineral freed by means not involving slitting by jaws, buckets or scoops that scoop-out the mineral
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
Abstract
The invention discloses a wheel bucket excavator mining method for a strip mine side caving area, which comprises the following steps: adopting a wheel bucket excavator to carry out first-layer excavation, wherein the operation mode of the first-layer excavation is as follows: the wheel bucket excavator rotates from the mining side to the inside of the step for excavation, then rotates from the inside of the step to the mining side for operation, and pushes forwards after finishing, and the wheel bucket excavator repeatedly excavates for multiple times; after the first layer of excavation is finished, the shovel is withdrawn to carry out second layer excavation, and the second layer excavation adopts the operation mode of the first layer excavation; after the second layer of excavation is finished, the shovel is withdrawn to carry out the third layer of excavation operation, the third layer of excavation adopts the operation mode of the first layer of excavation, wherein the rotation angle of a bucket wheel arm of the bucket wheel excavator to the mining side is larger than 34 degrees; and after the third layer of excavation is finished, entering the next cycle. The mining method of the wheel bucket excavator can ensure that the wheel bucket excavator has stronger operation adaptability and higher operation efficiency under the special condition of the strip mine slope area.
Description
Technical Field
The invention relates to the technical field of open-pit mining, in particular to a wheel bucket excavator mining method for an open-pit mine caving area.
Background
In the production process of the strip mine, due to factors such as geological structure, step height, rainfall and the like, the rib is easy to form locally, the slope angle of the step slides from 47 degrees to 10-30 degrees, and when the wheel bucket excavator is used for stripping operation in the rib area, the wheel bucket excavator, the reversed loader, the cable hopper car and the belt conveyor are used for combined operation.
However, the existing wheel bucket excavator mining method has the following defects: the wheel bucket excavator adopts the layering operation, because the wall caving occurs on the working face, the upper material of the step slides to the lower part, the slope angle of the placing step at the wall caving area is smaller, the distance from the step is farther, when the rotation angle to the mining side is larger when the lower material is mined, the equipment of the wheel bucket excavator runs the ladder and scrapes the step, and the equipment is damaged. And the excavator with the wheel bucket in the rib area cannot be completely extracted when being pushed forwards due to the limitation of the operation space. Meanwhile, the backhoe-truck is required to be matched in advance, so that the waste of the equipment capacity is caused, the operating efficiency of the wheel bucket excavator is influenced, and the adaptability and the flexibility of the equipment in the rib area operation are poor.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a wheel bucket excavator mining method for an open-pit mine caving area, which can enable the wheel bucket excavator to have stronger operation adaptability and higher operation efficiency under special conditions of the open-pit mine caving area.
In order to achieve the aim, the invention provides a wheel bucket excavator mining method for a strip mine side caving area, which comprises the following steps: adopting a wheel bucket excavator to carry out first-layer excavation, wherein the operation mode of the first-layer excavation is as follows: the wheel bucket excavator rotates from the mining side to the inside of the step for excavation, then rotates from the inside of the step to the mining side for operation, and pushes forwards after finishing, and the wheel bucket excavator repeatedly excavates for multiple times; after the first layer of excavation is finished, the shovel is withdrawn to carry out second layer excavation, and the second layer excavation adopts the operation mode of the first layer excavation; after the second layer of excavation is finished, the shovel is withdrawn to carry out the third layer of excavation operation, the third layer of excavation adopts the operation mode of the first layer of excavation, wherein the rotation angle of a bucket wheel arm of the bucket wheel excavator to the mining side is larger than 34 degrees; and after the third layer of excavation is finished, entering the next cycle.
In one embodiment of the invention, when the strip mine steps are subjected to rib stripping, the original steps are damaged, so that the width of the slope top is less than 30m, and the slope angle of the steps is slid to 10-30 degrees.
In one embodiment of the present invention, in the third stage mining operation, the turning angle of the bucket arm of the bucket wheel excavator to the mining side is 50 ° to completely mine the bottom material.
In one embodiment of the invention, the height of the first layer excavation is 8.5m, and the depth of each shovel of the bucket wheel excavator is 0.75 m.
In one embodiment of the present invention, in the first-floor excavation operation mode, the wheel shovel excavator repeats excavation 6 times to a depth of 9 m.
In one embodiment of the invention, the height of the second layer is 5.3m and the height of the third layer is 4.2 m.
Compared with the prior art, the wheel bucket excavator mining method for the strip mine side caving area has the following advantages that: the slice wall position is excavated by adjusting the rotation angle of the bucket wheel arm of the wheel bucket excavator, the rotation angle of the bucket wheel arm of the wheel bucket excavator to the mining side is larger than 34 degrees during operation of the lower part of the step, the mining width of the wheel bucket excavator is ensured, and the operation requirement on the site is met, so that the operation adaptability of the wheel bucket excavator is stronger and the operation efficiency is higher under the special condition of the slice wall area of the strip mine, and danger is generated when a backhoe and a truck excavate the slice wall area position, and the production safety is improved.
Drawings
FIG. 1 is a schematic view of the operation of a ledge step according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a first level mining operation according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second level mining operation according to one embodiment of the present invention;
fig. 4 is a schematic diagram of a third level mining operation according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, when the strip mine steps have rib spalling, the original steps are damaged to form a rib spalling area 111 (i.e. the top material slides to the lower part in a large area), the original excavation step parameters of the wheel bucket excavator are destroyed, the step slope top material slides to the slope bottom, the width h of the slope top is smaller than 30m, and the step slope angle slides to 10-30 degrees.
As shown in fig. 1-4, a method of wheel bucket excavator mining for a highwall area of a strip mine according to a preferred embodiment of the present invention includes the steps of: first, first-floor excavation is performed using a wheel excavator 104 (first floor 101 shown in fig. 2). Wherein, the operation mode of the first layer of excavation is as follows: the wheel bucket excavator 104 performs the operation of revolving the excavation machine from the excavation side to the inside of the step and then revolving the excavation machine from the inside of the step to the excavation side, and then performs the operation of pushing the excavation machine backward and forward (the operation manner in the arrow direction from 1 to 2 to 3 to 4 as shown in fig. 2-4), and the wheel bucket excavator repeats the excavation many times. After the first layer mining is completed, the back shovel performs the second layer mining (such as the second layer 102 shown in fig. 3), and the second layer mining adopts the operation mode of the first layer mining. After the second mining stage is completed, the shovel is retreated to perform the third mining stage (the third mining stage 103 shown in fig. 4), and the third mining stage also adopts the first mining stage. When the wheel bucket excavator is used on a normal working face for excavation and the third layer 103 works, the rotation angle of the wheel bucket excavator to the excavation side is 34 degrees, the distance between the tail part of the wheel bucket excavator and the step is safe, and the efficiency is high. When the rib caving occurs, the working position of the wheel bucket excavator is adjusted according to the step rib caving distance when the rib caving working face is excavated, the corresponding distance is adjusted towards the mining side by the wheel bucket excavator, and a working flat disc space is provided for equipment. At the same time, in the mining work of the third floor 103, the turning angle α of the bucket arm 105 of the bucket excavator 104 to the mining side is larger than 34 °. The position of the rib is excavated by increasing the rotation angle of the bucket wheel arm of the wheel bucket excavator, so that the mining width of the wheel bucket excavator is ensured, and the bottom materials are all mined. And finally, after the third layer of excavation is finished, entering the next cycle.
In one embodiment of the invention, when the strip mine steps are subjected to rib stripping, the original steps are damaged to form a rib stripping area 111, the original mining step parameters of the bucket wheel excavator are destroyed, the material on the slope top of the steps slides to the slope bottom, the width of the slope top is smaller than 30m, and the slope angle of the steps slides to 10-30 degrees.
In one embodiment of the present invention, it is preferable that, in the third mining operation, a turning angle α of the bucket arm of the bucket wheel excavator to the mining side is 50 ° so as to completely mine the bottom material.
In one embodiment of the invention, the height of the first layer excavation is 8.5m, and the depth of each shovel of the bucket wheel excavator is 0.75 m. In the first layer of excavation operation mode, the wheel bucket excavator excavates for 6 times repeatedly, and the excavation depth is 9 m.
In one embodiment of the invention, the height of the second layer is 5.3m and the height of the third layer is 4.2 m.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (3)
1. A method for excavating a wheel bucket excavator in a strip mine rib forming area is characterized in that when rib forming occurs to a strip mine step, an original step is damaged, the width of a slope top is smaller than 30m, the slope angle of the step slides to 10-30 degrees, and the method for excavating the wheel bucket excavator in the strip mine rib forming area comprises the following steps:
when the rib caving working face is used for excavating, the operation position of the wheel bucket excavator is adjusted according to the step rib caving distance, the corresponding distance of the wheel bucket excavator is adjusted to the mining side, and sufficient working flat plate space is provided for equipment;
adopting a wheel bucket excavator to carry out first-layer excavation, wherein the operation mode of the first-layer excavation is as follows: the wheel bucket excavator rotates from the mining side to the inside of the step for excavation, then rotates from the inside of the step to the mining side for operation, and pushes forwards after completing, and the wheel bucket excavator repeatedly excavates for multiple times;
after the first layer of excavation is finished, removing the shovel to perform second layer excavation, wherein the second layer excavation adopts the operation mode of the first layer excavation;
after the second layer of excavation is finished, withdrawing the shovel to perform third layer of excavation operation, wherein the third layer of excavation adopts the operation mode of the first layer of excavation, and the rotation angle of a bucket wheel arm of the bucket wheel excavator to the mining side is larger than 34 degrees;
after the third layer of excavation is finished, entering the next cycle;
when the third layer of mining operation is carried out, the rotation angle of a bucket wheel arm of the bucket wheel excavator to the mining side is 50 degrees, so that all bottom materials are mined;
the excavating height of the first layer is 8.5m, and the depth of each shovel of the wheel bucket excavator is 0.75 m.
2. The method of claim 1, wherein the first mining mode is a mode in which the wheel excavator excavates 6 iterations to a depth of 9 m.
3. The wheel bucket excavator mining method for a highwall area of a surface mine of claim 1, wherein the height of the second layer of excavation is 5.3m and the height of the third layer of excavation is 4.2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010273176.XA CN111411964B (en) | 2020-04-09 | 2020-04-09 | Wheel bucket excavator mining method for strip mine slope breaking area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010273176.XA CN111411964B (en) | 2020-04-09 | 2020-04-09 | Wheel bucket excavator mining method for strip mine slope breaking area |
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| Publication Number | Publication Date |
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| CN111411964A CN111411964A (en) | 2020-07-14 |
| CN111411964B true CN111411964B (en) | 2022-04-08 |
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| CN202010273176.XA Expired - Fee Related CN111411964B (en) | 2020-04-09 | 2020-04-09 | Wheel bucket excavator mining method for strip mine slope breaking area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112627824B (en) * | 2020-12-15 | 2023-07-07 | 华能伊敏煤电有限责任公司 | Safe and efficient mining method for winter operation of wheel bucket excavator in alpine region |
| CN112576255A (en) * | 2020-12-28 | 2021-03-30 | 华能伊敏煤电有限责任公司 | Semi-continuous process combined bench mining method without open cut |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6027790A (en) * | 1989-08-08 | 1991-02-14 | Siemens Aktiengesellschaft | Control process for open-cast mining conveying appliances |
| CN103216237A (en) * | 2012-12-28 | 2013-07-24 | 中国神华能源股份有限公司 | Open pit coal mine mining process |
| CN207934081U (en) * | 2018-01-15 | 2018-10-02 | 武汉中地金盾环境科技有限公司 | A kind of crawler type bucket wheel excavator |
-
2020
- 2020-04-09 CN CN202010273176.XA patent/CN111411964B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6027790A (en) * | 1989-08-08 | 1991-02-14 | Siemens Aktiengesellschaft | Control process for open-cast mining conveying appliances |
| CN103216237A (en) * | 2012-12-28 | 2013-07-24 | 中国神华能源股份有限公司 | Open pit coal mine mining process |
| CN207934081U (en) * | 2018-01-15 | 2018-10-02 | 武汉中地金盾环境科技有限公司 | A kind of crawler type bucket wheel excavator |
Non-Patent Citations (1)
| Title |
|---|
| 露天煤矿轮斗挖掘机采掘带宽度的分析与确定;巩晓峰;《露天采矿技术》;20141215;第60-62页第2节 * |
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