CN113818883A - Strip mine mining working face device and moving method thereof - Google Patents
Strip mine mining working face device and moving method thereof Download PDFInfo
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- CN113818883A CN113818883A CN202111124830.1A CN202111124830A CN113818883A CN 113818883 A CN113818883 A CN 113818883A CN 202111124830 A CN202111124830 A CN 202111124830A CN 113818883 A CN113818883 A CN 113818883A
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
Abstract
The invention discloses a strip mine mining working face device and a moving method thereof, wherein the device comprises working face mining equipment, a hopper car and a belt conveyor; the belt conveyor comprises a long working face belt conveyor and a short working face belt conveyor; the two conveying directions are the same and face to the end side on the same side, and the machine heads of the two conveying directions are near to the end side on the same side and transfer materials to continuous conveying system equipment arranged on the end side; the short working face belt conveyor is positioned between the long working face belt conveyor and the mining working face; the long working face belt conveyor is provided with a hopper car, and the hopper car can walk along the long working face belt conveyor. When the belt conveyor is moved, the belt conveyor with the short working face is used as an assistant, and continuous production can be realized. According to the scheme provided by the invention, the transfer production stopping time of the device is greatly shortened, so that the production stopping time of each transfer is shortened to be within 2 days from 7-15 days, and even no production stopping is realized. Has little influence on the production continuity of the strip mine production system.
Description
Technical Field
The invention belongs to the technical field of strip mine mining, and particularly relates to a strip mine mining working face device and a moving method thereof, which are particularly suitable for strip mine continuous/semi-continuous mining of a single coal seam.
Background
The continuous strip mine mining process system is formed by sequentially connecting equipment such as a wheel bucket excavator, a self-moving type reversed loader, a hopper car, a working face belt conveyor, a subsequent belt conveyor and the like in series and overlapping; the semi-continuous strip mine mining process system is formed by sequentially connecting and lapping equipment such as a single-bucket excavator, a self-moving crusher, a self-moving reversed loader, a hopper car, a working face belt conveyor, a subsequent belt conveyor and the like in series. When the strip mine continuous/semi-continuous mining process system works, the working face belt conveyor is arranged along the working face, the working face mining equipment continuously carries out mining operation along the working face direction, and the mining materials are transferred onto the working face belt conveyor through the transfer conveyor and the hopper car and then enter a subsequent continuous conveying system of the belt conveyor.
Compared with the single-bucket truck intermittent production process of the strip mine, the strip mine continuous/semi-continuous mining process system has the remarkable advantages of continuous operation, high working efficiency and low production cost, but equipment on a working face needs to be moved regularly, the moving time is long, the once moving can be completed generally in about 7-15 days, the continuous operation time of the equipment is influenced, and the production efficiency of the system is reduced.
The working surface equipment such as a wheel bucket excavator, a single bucket excavator, a self-moving crusher, a reversed loader and the like is provided with a travelling mechanism, the moving speed is high, the moving can be completed within 1 day, the working surface belt conveyor is long in length and does not have the travelling mechanism, the working surface belt conveyor needs to be moved by means of auxiliary equipment, the moving time of the working surface belt conveyor is long, about 7-15 days are needed, and the working surface equipment is main time-consuming equipment for moving the working surface equipment. In 7-15 days after the working face belt conveyor is moved, the continuous/semi-continuous mining process system is in a shutdown state, the yield of the system is seriously influenced, especially for the strip mine with only a single main mining coal layer, the continuous shutdown of the coal mining system for 7-15 days is unacceptable for the strip mine, and the application of the continuous/semi-continuous mining process system in the strip mine coal mining system is also seriously limited.
Disclosure of Invention
The invention aims to provide a strip mine mining working face device and a moving method thereof, so as to reduce the production stop time of moving a continuous/semi-continuous mining process system, thereby solving the problems in the background technology.
The invention is realized by the following technical scheme: a surface mining device for strip mine comprises a surface mining device, a hopper car and a belt conveyor;
the method is characterized in that: the belt conveyor comprises a long working face belt conveyor and a short working face belt conveyor;
the long working face belt conveyor and the short working face belt conveyor are arranged in parallel with a continuous/semi-continuous mining working face of a strip mine, the long working face belt conveyor and the working face are equal in length, the length of the short working face belt conveyor is far smaller than that of the working face, the length of the short working face belt conveyor is slightly larger than the occurrence length of the working face materials to be mined along the working face direction during the movement and production halt period in each movement period, and the occurrence length is obtained by dividing the real volume of the working face materials to be mined by mining height and then by the movement distance;
the long working face belt conveyor and the short working face belt conveyor have the same conveying direction and face towards the same side end wall, and the machine heads of the long working face belt conveyor and the short working face belt conveyor are near the same side end wall and transfer materials to continuous conveying system equipment arranged on the end wall;
the short working face belt conveyor is positioned between the long working face belt conveyor and the mining working face;
the long working face belt conveyor is provided with a hopper car, and the hopper car can walk along the long working face belt conveyor.
The moving method of the strip mine mining working face device is characterized by comprising the following steps: the method comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines and arranges the working face materials at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, excavating other materials, and simultaneously moving the short working face belt conveyor;
and step 3: continuing to dig, and completing the moving of the short working face belt conveyor before the working face digging equipment completes the digging of the last mining width;
and 4, step 4: after the working face excavating equipment finishes the excavating of the last mining breadth, the hopper car is moved from the long working face belt conveyor to the short working face belt conveyor, and the working face excavating equipment is moved along with the hopper car; transferring materials excavated by the working face excavating equipment to a short working face belt conveyor through a hopper car, and conveying the materials to an end slope by the short working face belt conveyor to transfer the materials to continuous conveying system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor is moved;
step 6: after the long working face belt conveyor is moved to the right position, the hopper car is moved from the short working face belt conveyor back to the long working face belt conveyor, and the working face excavating equipment is moved along with the hopper car; and finishing the equipment moving of the working face.
Furthermore, the surface mining device for the strip mine further comprises a reversed loader, wherein the reversed loader is arranged between the surface mining equipment and the hopper car; materials excavated by the working face excavating equipment are transferred into a hopper car through a transfer conveyor; when the distance between the working face and the long working face belt conveyor or the short working face belt conveyor provided with the hopper car is larger than the conveying distance of the working face mining equipment, the materials mined by the working face mining equipment can be transferred into the hopper car through the transfer conveyor.
The moving method of the strip mine mining working face device comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines the working face materials arranged at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, the short working face belt conveyor is moved;
and step 3: completing the movement of the short working face belt conveyor before the working face mining equipment completes the mining of the last mining width;
and 4, step 4: after the working face mining equipment finishes the mining of the last mining breadth, the hopper car is moved from the long working face belt conveyor to the short working face belt conveyor, and the working face mining equipment and the transfer conveyor are moved along with the hopper car; materials excavated by the working face excavating equipment are transferred to the hopper car through the transfer conveyor or without the transfer conveyor, and then transferred to the short working face belt conveyor through the hopper car, and the short working face belt conveyor conveys the materials to the end slope and transfers the materials to the continuous conveying system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor is moved;
step 6: after the long working face belt conveyor is moved in place, the hopper car is moved from the short working face belt conveyor back to the long working face belt conveyor, and the working face excavating equipment and the reversed loader are moved along with the hopper car; and finishing the equipment moving of the working face.
Furthermore, the surface mining device for the strip mine further comprises a short-working-surface belt conveyor hopper car which is arranged on the short-working-surface belt conveyor and can walk along the short-working-surface belt conveyor.
The moving method of the strip mine mining working face device is characterized by comprising the following steps: the method comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines the working face materials arranged at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, the short working face belt conveyor is moved, and the hopper car of the short working face belt conveyor is also moved along with the short working face belt conveyor;
and step 3: completing the transfer of the short face belt conveyor and the short face belt conveyor hopper car before the face mining equipment completes the mining of the last mining width;
and 4, step 4: after the working face excavating equipment finishes the excavating of the last mining breadth, the working face excavating equipment is moved to be overlapped with a short working face belt conveyor hopper car on a short working face belt conveyor; the method comprises the following steps that materials excavated by the working face excavating equipment are transferred to a short working face belt conveyor through a short working face belt conveyor hopper car, the short working face belt conveyor conveys the materials to an end slope, and the materials are transferred to continuous conveying system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor and the hopper car on the long working surface belt conveyor are moved;
step 6: after the long working face belt conveyor and the hopper car on the long working face belt conveyor are moved to the right position, the working face excavating equipment is moved to be overlapped with the hopper car on the long working face belt conveyor; and finishing the equipment moving of the working face.
Furthermore, the surface mining device for the strip mine further comprises a reversed loader, wherein the reversed loader is arranged between the surface mining equipment and the hopper car; materials excavated by the working face excavating equipment are transferred into a hopper car or a short working face belt conveyor hopper car through a transfer conveyor; when the distance between the working face and the long working face belt conveyor provided with the hopper car is larger than the conveying distance of the working face mining equipment, the materials mined by the working face mining equipment can be transferred into the hopper car through the transfer conveyor.
The moving method of the strip mine mining working face device comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines the working face materials arranged at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, the short working face belt conveyor is moved, and the hopper car of the short working face belt conveyor is also moved along with the short working face belt conveyor;
and step 3: completing the transfer of the short face belt conveyor and the short face belt conveyor hopper car before the face mining equipment completes the mining of the last mining width;
and 4, step 4: after the working face excavating equipment finishes the excavating of the last mining breadth, the working face excavating equipment and the transfer conveyor are moved to be overlapped with a hopper car of a short working face belt conveyor on the short working face belt conveyor; materials excavated by the working face excavating equipment are transferred to the short working face belt conveyor hopper car through a transfer conveyor or without the transfer conveyor, and then transferred to the short working face belt conveyor through the short working face belt conveyor hopper car, and the short working face belt conveyor transports the materials to the end slope and transfers the materials to continuous transportation system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor and the hopper car on the long working surface belt conveyor are moved;
step 6: after the long working face belt conveyor and the hopper car on the long working face belt conveyor are moved to the right position, the working face excavating equipment and the transfer conveyor are moved to be overlapped with the hopper car on the long working face belt conveyor; and finishing the equipment moving of the working face.
Further: the working face mining equipment comprises one of wheel bucket excavators, coal mining machines, heading machines, shield tunneling machines, TBMs and combined mining equipment of single bucket excavators and self-moving crushers.
The invention has the advantages that: the moving method greatly shortens the moving production stopping time of continuous/semi-continuous mining process system equipment, shortens the production stopping time of each moving from 7-15 days to within 2 days, and even realizes no production stopping. According to the calculation that the existing continuous/semi-continuous mining process system is moved four times per year, the invention can prolong the annual working time of the continuous/semi-continuous process system by 1-2 months.
The moving method has small influence on the production continuation of the strip mine production system, so that the single coal seam strip mine can be applied to an efficient continuous/semi-continuous mining process system, and the application range of the strip mine continuous/semi-continuous mining process system is expanded.
Drawings
FIG. 1 is a schematic structural view of a strip mining face apparatus according to example 1;
FIG. 2 is a schematic view of the surface equipment transfer step of the strip mine mining of example 1;
FIG. 3 is a schematic structural view of a strip mining face apparatus according to example 2;
FIG. 4 is a schematic illustration of the step of moving the surface equipment for strip mining in accordance with example 2;
FIG. 5 is a schematic structural view of a strip mining face apparatus according to example 3;
FIG. 6 is a schematic illustration of the strip mining face apparatus transfer step of embodiment 3;
FIG. 7 is a schematic structural view of a strip mining face apparatus according to example 4;
fig. 8 is a schematic diagram of a strip mining face device transfer step according to embodiment 4.
The numbers in the figure illustrate the following: 1 working face excavating equipment, 2 hopper cars, 3 long working face belt conveyors, 4 short working face belt conveyors, 5 reversed loaders and 6 short working face belt conveyor hopper cars.
Detailed Description
As shown in the attached figures 1-8, the invention discloses a strip mine mining working face device and a moving method thereof. Two face belt conveyors are arranged in parallel (or approximately parallel, the same below) on the working face of continuous/semi-continuous mining of the strip mine, wherein the long face belt conveyor is equal to (or approximately equal to, the same below) the length of the working face, the length of the short face belt conveyor is far less than the length of the working face, and the length of the short face belt conveyor meets the occurrence length of the working face minerals required to be excavated during the period of production halt of the moving device in each moving period (the length is limited only for distinguishing the two belt conveyors and is not used for modifying the thesaurus). The short working face belt conveyor is positioned between the long working face belt conveyor and the mining working face, the conveying directions of the two belt conveyors are the same, and the machine heads of the two belt conveyors are both near the end wall on the same side, so that the short working face belt conveyor is convenient for feeding to continuous conveying system equipment arranged on the end wall. During normal work, materials excavated by the working face excavating equipment are transferred to the long working face belt conveyor through the transfer conveyor and the hopper car, and the long working face belt conveyor conveys the materials to the end slope belt conveyor to enter a subsequent continuous conveying system, so that normal continuous production operation of a continuous/semi-continuous process system is realized. Before the main equipment of the continuous/semi-continuous mining process system is moved, the short working face belt conveyor is moved, and at the moment, the continuous/semi-continuous mining process system still normally operates through the long working face belt conveyor. After the short-working-face belt conveyor is moved in place, the hopper car is moved to the short-working-face belt conveyor, the working-face mining equipment and the reversed loader are moved to be matched with the hopper car on the short-working-face belt conveyor, and the working-face mining equipment, the reversed loader, the hopper car and the short-working-face belt conveyor form a continuous/semi-continuous mining process system during the moving period. The long working face belt conveyor is moved, and after the long working face belt conveyor is moved to a proper position, the working face excavating equipment, the transfer conveyor and the hopper car can be moved at any time to be connected with the long working face belt conveyor again, so that the normal mining operation of the continuous/semi-continuous mining process system is recovered. Before the next transfer, the short working face belt conveyor is transferred, and the process is repeated.
The working face mining equipment 1 includes a bucket wheel excavator, a coal mining machine, a heading machine, a shield machine, a TBM, and combined mining equipment of a single bucket excavator and a self-moving crusher, and the like. The minerals or cuttings to be extracted from the face, and the minerals and cuttings after extraction are referred to in the examples as "material".
Example 1
The surface mining equipment comprises a surface mining device 1, a hopper car, a long surface belt conveyor 3 and a short surface belt conveyor 4:
wherein: the long working face belt conveyor 3 and the short working face belt conveyor 4 are arranged in parallel or approximately in parallel with a continuous/semi-continuous mining working face of a strip mine, the length of the long working face belt conveyor 3 is approximately equal to that of the working face, the length of the short working face belt conveyor 4 is far shorter than that of the working face, the length of the short working face belt conveyor is slightly longer than the occurrence length of the working face materials to be mined along the working face direction during the movement and production halt period in each movement period, and the occurrence length is calculated by dividing the mining height by the movement distance according to the actual volume of the working face materials to be mined.
The long working face belt conveyor 3 and the short working face belt conveyor 4 are in the same conveying direction and face towards the same side end wall, and the machine heads of the long working face belt conveyor and the short working face belt conveyor are near the same side end wall and transfer materials to continuous conveying system equipment arranged on the end wall.
The short face belt conveyor 4 is located between the long face belt conveyor 3 and the mining face.
The long working face belt conveyor 3 is provided with a hopper car, and the hopper car can walk along the long working face belt conveyor 3. The hopper car can also travel along the short face belt conveyor 4 after being moved onto the short face belt conveyor 4.
During normal work, after the working face excavating equipment 1 excavates the working face materials, the materials are transferred into the hopper car and transferred to the long working face belt conveyor 3 by the hopper car, and the long working face belt conveyor 3 conveys the materials to the end slope and transfers the materials to equipment of a continuous conveying system arranged on the end slope.
The method for moving the equipment on the mining working face of the strip mine comprises the following steps:
step 1: the working face excavating equipment 1 excavates the working face material arranged at one end of the short working face belt conveyor 4 at the last mining width before the moving.
Step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor 4 are excavated, the short working face belt conveyor 4 is moved.
And step 3: the transfer of the short face belt conveyor 4 is completed before the face extraction apparatus 1 completes the extraction of the last swath.
And 4, step 4: after the working face mining equipment 1 finishes the mining of the last mining width, the hopper car is moved from the long working face belt conveyor 3 to the short working face belt conveyor 4, and the working face mining equipment 1 is moved along with the hopper car. The material extracted by the working face extraction equipment 1 is transferred to the short working face belt conveyor 4 through a hopper car, and the short working face belt conveyor 4 transports the material to the end slope and transfers the material to the equipment of the continuous transportation system arranged on the end slope.
And 5: at the same time, the long work surface belt conveyor 3 is transferred.
Step 6: after the long face belt conveyor 3 is moved into position, the hopper car is moved from the short face belt conveyor 4 back onto the long face belt conveyor 3 and the face mining equipment 1 is moved with the hopper car. And finishing the equipment moving of the working face.
Example 2
A reversed loader 5 is added on the basis of the embodiment 1, and the reversed loader 5 is arranged between the working face excavating equipment 1 and the hopper car. Materials excavated by the working face excavating equipment 1 are transferred into a hopper car through a transfer conveyor 5; when the distance between the working face and the long working face belt conveyor (or the short working face belt conveyor) provided with the hopper car is small, the materials excavated by the working face excavating equipment 1 can be directly transferred into the hopper car without passing through the transfer conveyor 5.
This embodiment is different from embodiment 1 in that: during normal work, after the working face excavating equipment 1 excavates the working face materials, the materials are transferred to the hopper car through the transfer conveyor 5 or without the transfer conveyor 5 and then transferred to the long working face belt conveyor 3 through the hopper car, and the long working face belt conveyor 3 conveys the materials to the end slope and transfers the materials to equipment of a continuous conveying system arranged on the end slope.
Step 1-3: the same as example 1;
and 4, step 4: after the face mining equipment 1 completes the mining of the last panel, the hopper car is moved from the long face belt conveyor 3 to the short face belt conveyor 4, and the face mining equipment 1 and the transfer conveyor 5 (if necessary) are moved with the hopper car. Materials excavated by the working face excavating equipment 1 are transferred to a hopper car through a transfer conveyor 5 or without the transfer conveyor 5, and then transferred to a short working face belt conveyor 4 through the hopper car, and the short working face belt conveyor 4 conveys the materials to an end slope and transfers the materials to equipment of a continuous conveying system arranged on the end slope;
and 5: same as example 1, step 5;
step 6: after the long face belt conveyor 3 is moved into position, the hopper car is moved from the short face belt conveyor 4 back onto the long face belt conveyor 3 and the face extraction apparatus 1 and the transfer conveyor 5 (if required) are moved with the hopper car. And finishing the equipment moving of the working face.
Example 3
A short face belt conveyor hopper car 6 is added to the embodiment 1 and is installed on the short face belt conveyor 4.
This embodiment is different from embodiment 1 in that: the long working face belt conveyor 3 is provided with a hopper car, and the hopper car can walk along the long working face belt conveyor 3. The short working face belt conveyor 4 is provided with a short working face belt conveyor hopper car 6, and the short working face belt conveyor hopper car 6 can walk along the short working face belt conveyor 4.
Step 1: the same as example 1;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor 4 are excavated, the short working face belt conveyor 4 is moved, and the short working face belt conveyor hopper car 6 is also moved along with the short working face belt conveyor 4;
and step 3: completing the transfer of the short face belt conveyor 4 and the short face belt conveyor hopper car 6 before the face mining equipment 1 completes the mining of the last mining width;
and 4, step 4: after the face mining equipment 1 completes the mining of the last mining swath, the face mining equipment 1 is moved to be overlapped with a short face belt conveyor hopper car 6 on a short face belt conveyor 4. The materials excavated by the working face excavating equipment 1 are transferred to a short working face belt conveyor 4 through a short working face belt conveyor hopper car 6, the short working face belt conveyor 4 transports the materials to an end slope, and the materials are transferred to equipment of a continuous transport system arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor 3 and the hopper cars on the long working surface belt conveyor are moved;
step 6: after the long face belt conveyor 3 and the hopper car on the long face belt conveyor 3 are moved to the right position, the face excavating equipment 1 is moved to be overlapped with the hopper car on the long face belt conveyor 3. And finishing the equipment moving of the working face.
Example 4
A reversed loader 5 is added on the basis of the embodiment 3, and the reversed loader 5 is arranged between the working face excavating equipment 1 and the hopper car (or the working face belt conveyor hopper car 6). Materials excavated by the working face excavating equipment 1 are transferred into a hopper car (or a short working face belt conveyor hopper car 6) through a transfer conveyor 5; when the distance between the working face and the long working face belt conveyor provided with the hopper car (or the short working face belt conveyor provided with the short working face belt conveyor hopper car 6) is small, the materials excavated by the working face excavating equipment 1 can be directly transferred into the hopper car (or the short working face belt conveyor hopper car 6) without passing through the transfer conveyor 5.
This embodiment is different from embodiment 3 in that: during normal work, after the working face excavating equipment 1 excavates the working face materials, the materials are transferred to the hopper car through the transfer conveyor 5 or without the transfer conveyor 5 and then transferred to the long working face belt conveyor 3 through the hopper car, and the long working face belt conveyor 3 conveys the materials to the end slope and transfers the materials to the equipment of the continuous conveying system arranged on the end slope.
Step 1-3: the same as in example 3;
and 4, step 4: after the face mining equipment 1 finishes the mining of the last mining width, the face mining equipment 1 and the transfer conveyor 5 are moved to be overlapped with a short face belt conveyor hopper car 6 on the short face belt conveyor 4. Materials excavated by the working face excavating equipment 1 are transferred to the short working face belt conveyor hopper car 6 through the transfer conveyor 5 or without the transfer conveyor 5, and then transferred to the short working face belt conveyor 4 through the short working face belt conveyor hopper car 6, and the short working face belt conveyor 4 transports the materials to the end slope and transfers the materials to equipment of a continuous transport system arranged on the end slope;
step 6: after the long working face belt conveyor 3 and the hopper cars on the long working face belt conveyor 3 are moved to the right position, the working face excavating equipment 1 and the reversed loader 5 are moved to be overlapped with the hopper cars on the long working face belt conveyor 3, and the movement of the working face equipment is completed.
Taking practical application as an example, the main parameters of a certain strip mine mining working face are as follows: the length of a working face is 1500m, the height of a coal bed is 20m, the width of a mining width is 90m, and the total volume of materials of the working face of one mining width is 270 ten thousandm3(practical, the same below), excavating by adopting a wheel bucket excavator, and excavating 3 ten thousand meters per day3And (3) feeding.
The working face is only provided with one working face belt conveyor by adopting the traditional open-pit mine continuous system working face device mining and transferring method, the length is about 1500m, a bucket wheel excavator finishes one mining width in about 90 days, one transferring is needed, and the production is stopped for 15 days in one transferring. The traditional method for mining and transferring the working face device of the strip mine continuous system is adopted, the strip mine continuous system is transferred 4 times a year, each time the strip mine continuous system is transferred, the time is 15 days, and the production is stopped for 60 days all the year round.
By adopting the mining face device and the transfer method thereof described in embodiment 4, the length of the long face belt conveyor is about 1500m, the length of the short face belt conveyor is about 250m, and the wheel bucket excavator is used for mining a mining width about 90 days, and needs to be transferred once, because the wheel bucket excavator and the transfer machine are transferred after the short face belt conveyor and the corresponding hopper car are transferred, the wheel bucket excavator and the transfer machine only need to be transferred to be connected with the hopper car on the short face belt conveyor in 1 day, so that the production can be continued, and then the long face belt conveyor and the hopper car thereof are transferred, and after the long face belt conveyor and the hopper car thereof are transferred, the wheel bucket excavator and the transfer machine are transferred back to be connected with the hopper car on the long face belt conveyor in 1 day, so that the whole transfer process can be completed. That is, the mining face device and the transfer method thereof described in embodiment 4 are transferred 4 times per year, each transfer takes 2 days, and the production is stopped for 8 days all the year round.
It can be seen that the mining working face device and the moving method thereof in the embodiment 4 can be used for 50 days of production halt each year in the moving link, and 150 ten thousand meters of coal can be mined in one year3The material greatly improves the yield of the production system.
Meanwhile, the mining working face device and the moving method thereof in the embodiment 4 only need to occupy discontinuous 2 days for moving each time, and have little influence on the continuous production of the strip mine. The mining and transferring method adopting the traditional strip mine continuous system working face device is used for 15 days each time of transferring, and the continuous production stop for 15 days results in 45 ten thousand meters3The yield of the materials is deficient and converted intoThe product coal is about 60 million tons, the reserve capacity of a ground coal storage system of a common opencast coal mine is not more than 10 million tons, and the reserve capacity of the system cannot meet the coal supply during the movement and production halt period, so that the application of an efficient continuous opencast mine production process in opencast mine coal mining engineering is greatly limited. The mining working face device and the moving method thereof in the embodiment 4 well solve the problem that the long moving continuous production stop time affects the continuous production of the strip mine, and greatly improve the application range of the efficient continuous production process of the strip mine in the coal mining engineering of the strip mine.
The moving method greatly shortens the moving production stopping time of continuous/semi-continuous mining process system equipment, shortens the production stopping time of each moving from 7-15 days to within 2 days, and even realizes no production stopping. According to the calculation that the existing continuous/semi-continuous mining process system is moved four times per year, the invention can prolong the annual working time of the continuous/semi-continuous process system by 1-2 months. The moving method has small influence on the production continuation of the strip mine production system, so that the single coal seam strip mine can be applied to an efficient continuous/semi-continuous mining process system, and the application range of the strip mine continuous/semi-continuous mining process system is expanded.
Claims (9)
1. A surface mining device for strip mine comprises a surface mining device, a hopper car and a belt conveyor;
the method is characterized in that: the belt conveyor comprises a long working face belt conveyor and a short working face belt conveyor;
the long working face belt conveyor and the short working face belt conveyor are arranged in parallel with a continuous/semi-continuous mining working face of a strip mine, the long working face belt conveyor and the working face are equal in length, the length of the short working face belt conveyor is far smaller than that of the working face, the length of the short working face belt conveyor is slightly larger than the occurrence length of the working face materials to be mined along the working face direction during the movement and production halt period in each movement period, and the occurrence length is obtained by dividing the real volume of the working face materials to be mined by mining height and then by the movement distance;
the long working face belt conveyor and the short working face belt conveyor have the same conveying direction and face towards the same side end wall, and the machine heads of the long working face belt conveyor and the short working face belt conveyor are near the same side end wall and transfer materials to continuous conveying system equipment arranged on the end wall;
the short working face belt conveyor is positioned between the long working face belt conveyor and the mining working face;
the long working face belt conveyor is provided with a hopper car, and the hopper car can walk along the long working face belt conveyor.
2. The method of moving a surface unit for strip mining of claim 1, wherein: the method comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines and arranges the working face materials at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, excavating other materials, and simultaneously moving the short working face belt conveyor;
and step 3: continuing to dig, and completing the moving of the short working face belt conveyor before the working face digging equipment completes the digging of the last mining width;
and 4, step 4: after the working face excavating equipment finishes the excavating of the last mining breadth, the hopper car is moved from the long working face belt conveyor to the short working face belt conveyor, and the working face excavating equipment is moved along with the hopper car; transferring materials excavated by the working face excavating equipment to a short working face belt conveyor through a hopper car, and conveying the materials to an end slope by the short working face belt conveyor to transfer the materials to continuous conveying system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor is moved;
step 6: after the long working face belt conveyor is moved to the right position, the hopper car is moved from the short working face belt conveyor back to the long working face belt conveyor, and the working face excavating equipment is moved along with the hopper car; and finishing the equipment moving of the working face.
3. The surface mining face apparatus of claim 1, wherein: the hopper car is arranged between the working face excavating equipment and the hopper car; materials excavated by the working face excavating equipment are transferred into a hopper car through a transfer conveyor; when the distance between the working face and the long working face belt conveyor or the short working face belt conveyor provided with the hopper car is larger than the conveying distance of the working face mining equipment, the materials mined by the working face mining equipment can be transferred into the hopper car through the transfer conveyor.
4. A method of moving a surface unit for strip mining according to claim 3, wherein: the method comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines the working face materials arranged at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, the short working face belt conveyor is moved;
and step 3: completing the movement of the short working face belt conveyor before the working face mining equipment completes the mining of the last mining width;
and 4, step 4: after the working face mining equipment finishes the mining of the last mining breadth, the hopper car is moved from the long working face belt conveyor to the short working face belt conveyor, and the working face mining equipment and the transfer conveyor are moved along with the hopper car; materials excavated by the working face excavating equipment are transferred to the hopper car through the transfer conveyor or without the transfer conveyor, and then transferred to the short working face belt conveyor through the hopper car, and the short working face belt conveyor conveys the materials to the end slope and transfers the materials to the continuous conveying system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor is moved;
step 6: after the long working face belt conveyor is moved in place, the hopper car is moved from the short working face belt conveyor back to the long working face belt conveyor, and the working face excavating equipment and the reversed loader are moved along with the hopper car; and finishing the equipment moving of the working face.
5. The surface mining face apparatus of claim 1, wherein: the hopper car is arranged on the short working face belt conveyor and can walk along the short working face belt conveyor.
6. The method of moving a surface unit for strip mining of claim 5, wherein: the method comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines the working face materials arranged at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, the short working face belt conveyor is moved, and the hopper car of the short working face belt conveyor is also moved along with the short working face belt conveyor;
and step 3: completing the transfer of the short face belt conveyor and the short face belt conveyor hopper car before the face mining equipment completes the mining of the last mining width;
and 4, step 4: after the working face excavating equipment finishes the excavating of the last mining breadth, the working face excavating equipment is moved to be overlapped with a short working face belt conveyor hopper car on a short working face belt conveyor; the method comprises the following steps that materials excavated by the working face excavating equipment are transferred to a short working face belt conveyor through a short working face belt conveyor hopper car, the short working face belt conveyor conveys the materials to an end slope, and the materials are transferred to continuous conveying system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor and the hopper car on the long working surface belt conveyor are moved;
step 6: after the long working face belt conveyor and the hopper car on the long working face belt conveyor are moved to the right position, the working face excavating equipment is moved to be overlapped with the hopper car on the long working face belt conveyor; and finishing the equipment moving of the working face.
7. The surface mining face apparatus of claim 5, wherein: the hopper car is arranged between the working face excavating equipment and the hopper car; materials excavated by the working face excavating equipment are transferred into a hopper car or a short working face belt conveyor hopper car through a transfer conveyor; when the distance between the working face and the long working face belt conveyor provided with the hopper car is larger than the conveying distance of the working face mining equipment, the materials mined by the working face mining equipment can be transferred into the hopper car through the transfer conveyor.
8. The method of moving a surface unit for strip mining of claim 7, wherein: the method comprises the following steps:
step 1: the last mining breadth before the movement, the working face mining equipment firstly mines the working face materials arranged at one end of the short working face belt conveyor;
step 2: after the corresponding working face materials within the arrangement length range of the short working face belt conveyor are excavated, the short working face belt conveyor is moved, and the hopper car of the short working face belt conveyor is also moved along with the short working face belt conveyor;
and step 3: completing the transfer of the short face belt conveyor and the short face belt conveyor hopper car before the face mining equipment completes the mining of the last mining width;
and 4, step 4: after the working face excavating equipment finishes the excavating of the last mining breadth, the working face excavating equipment and the transfer conveyor are moved to be overlapped with a hopper car of a short working face belt conveyor on the short working face belt conveyor; materials excavated by the working face excavating equipment are transferred to the short working face belt conveyor hopper car through a transfer conveyor or without the transfer conveyor, and then transferred to the short working face belt conveyor through the short working face belt conveyor hopper car, and the short working face belt conveyor transports the materials to the end slope and transfers the materials to continuous transportation system equipment arranged on the end slope;
and 5: meanwhile, the long working surface belt conveyor and the hopper car on the long working surface belt conveyor are moved;
step 6: after the long working face belt conveyor and the hopper car on the long working face belt conveyor are moved to the right position, the working face excavating equipment and the transfer conveyor are moved to be overlapped with the hopper car on the long working face belt conveyor; and finishing the equipment moving of the working face.
9. The surface mining face apparatus of claim 1, wherein: the working face mining equipment comprises one of wheel bucket excavators, coal mining machines, heading machines, shield tunneling machines, TBMs and combined mining equipment of single bucket excavators and self-moving crushers.
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