CN113818884B - Strip mine working surface belt type conveying system and sector steering and transferring method - Google Patents
Strip mine working surface belt type conveying system and sector steering and transferring method Download PDFInfo
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- CN113818884B CN113818884B CN202111124841.XA CN202111124841A CN113818884B CN 113818884 B CN113818884 B CN 113818884B CN 202111124841 A CN202111124841 A CN 202111124841A CN 113818884 B CN113818884 B CN 113818884B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
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Abstract
The invention discloses an open-pit mining working surface belt conveyor system and a sector steering and transferring method. According to the sector steering moving method, the mining surfaces corresponding to the groups of belt conveyors are sequentially mined from back to front and are compared with moving gauge lines, so that the moving direction of the mining device and the moving of the rear conveyor are determined. The conveying system and the moving method greatly reduce the times of stopping production and moving of continuous/semi-continuous exploitation process system equipment, thereby reducing the workload and the stopping production time.
Description
Technical Field
The invention belongs to the technical field of strip mine mining equipment, and particularly relates to a strip mine working face belt type conveying system and a sector steering and moving method.
Background
The continuous mining process system of the strip mine is formed by sequentially connecting equipment such as a bucket wheel excavator, a self-moving type reversed loader, a material receiving vehicle, a working surface belt type conveyor, a follow-up belt type conveyor and the like in series; the semi-continuous mining process system for the strip mine is formed by sequentially connecting equipment such as a single bucket excavator, a self-moving crusher, a self-moving reversed loader, a receiving car, a working surface belt conveyor, a follow-up belt conveyor and the like in series. Compared with the single bucket truck intermittent production process of the strip mine, the continuous/semi-continuous mining process system of the strip mine has the remarkable advantages of continuous operation, high working efficiency and low production cost. However, with the advance of the working surface, the working surface equipment of the continuous/semi-continuous mining process system needs to be moved periodically, and the moving of the working surface equipment of the system generally needs 7-15 days, which affects the working efficiency of the continuous/semi-continuous mining process system to a great extent.
The working face equipment such as the wheel bucket excavator, the single bucket excavator, the self-moving crusher, the reversed loader and the like is provided with a traveling mechanism, so that the moving speed is high, and the moving setting can be completed within 1 day. The working belt conveyor does not have a travelling mechanism, and needs to be moved by auxiliary equipment, so that the moving time of a continuous/semi-continuous mining process system is more than 60 percent. The longer the length of the working belt conveyor is, the longer the moving time is, and the moving time of one belt conveyor of 1km is about 7-15 days. In 7-15 days when the working face belt conveyor is shifted, the continuous/semi-continuous mining process system is in a shutdown state, the yield of the system is seriously affected, and especially for strip mines with single mining coal layers, the continuous shutdown of the coal mining system for 7-15 days is unacceptable for the strip mine, so that the application of the continuous/semi-continuous mining process system in the strip mine coal mining system is severely limited.
When the fan-shaped steering is performed, the working surface rotates approximately around the fixed point, the point on the inner side of the fan-shaped steering working surface is basically fixed, and the propulsion speed of the point on the outer side of the fan-shaped steering is doubled compared with that of the parallel propulsion working condition. Therefore, under the condition of the same amplitude-picking width, the output of the production system is ensured to be unchanged, the moving frequency of the sector-steering working face equipment is doubled compared with that of parallel pushing, the moving and production stopping time of the continuous/semi-continuous mining process system is further increased, and the application of the continuous/semi-continuous mining process system in strip mines is severely limited.
Disclosure of Invention
The invention aims to provide an open-pit mining working surface belt type conveying system and a sector steering shifting method, which realize the non-stop production or less-stop production shifting of a continuous/semi-continuous mining process system and effectively improve the annual effective operation time of the continuous/semi-continuous mining process system.
The invention is realized by the following technical scheme: an open-pit mining work surface belt conveyor system, characterized by: the conveying system comprises n groups of belt conveyors, and the n groups of belt conveyors are sequentially connected in series and overlapped from front to back;
the machine head of the B1 belt conveyor is arranged at the center of the fan-shaped steering, and the B1 belt conveyor transfers working face materials to equipment of the end slope continuous conveying system; the other belt conveyor heads are connected with the tail of the front belt conveyor, and the front belt conveyor is used for transferring the working face materials; working face excavating equipment and matched transfer equipment can transfer the excavated working face materials to any belt conveyor;
wherein, n groups of belt conveyors are B1, B2 … … Bn outwards along the fan-shaped circle center in turn, n is a natural number which is more than or equal to 2, and the machine heads of all the belt conveyors face the circle center direction.
A sector steering shift method for an open pit mining work surface belt conveyor system employing the conveyor system of claim 1, wherein: the method comprises the following steps:
step 1: working face excavating and transferring equipment excavates working face materials corresponding to the Bn belt conveyor on the Bn belt conveyor;
step 2: after the working face materials corresponding to the belt conveyor are extracted, the working face extracting and transferring equipment is moved to the front belt conveyor to continuously extract and transport the working face materials corresponding to the front belt conveyor;
step 3: judging whether the rear mining face reaches a moving design line or not; if not, carrying out the step 4; if so, performing the step 5;
step 4: the rear belt conveyor is subjected to sector-shaped moving with the machine head as the center, and after the moving is finished, the working face mining and transferring equipment immediately moves to the rear belt conveyor; and returning to the step 2;
step 5: after the working face materials corresponding to the belt conveyor are extracted, the working face extracting and transferring equipment is moved to the front belt conveyor to continuously extract and transport the working face materials corresponding to the front belt conveyor;
step 6: judging whether the rear mining face reaches a moving design line or not; if not, performing the step 7; if so, performing the step 5;
step 7: sector-shaped moving is carried out by taking a machine head of a belt conveyor as the center; after the transfer is completed, the working face mining and transferring equipment immediately moves to a Bn belt conveyor; and returning to the step 2;
step 8: when the working face mining and transferring equipment moves onto the B1 belt conveyor and the moving arrangement line is reached, the working face mining and transferring equipment stops after the working face materials are mined, the belt conveyors are sequentially moved and arranged, after the B1 belt conveyor is completed, the working face mining and transferring equipment is started to mine the working face materials corresponding to the B1 belt conveyor, the moving and arranging are continued until all the belt conveyors are moved and arranged, and then the fan-shaped steering moving and arranging once is completed.
Further: the moving arrangement line of the Bi belt conveyor is as follows: and (3) determining a point Ci at a position which is perpendicular to the Bi-1 belt conveyor and is separated from the tail of the Bi-1 belt conveyor by one width of a picking width in the advancing direction, and taking rays Li from the head of the Bi-1 belt conveyor to the point Ci, wherein the rays Li are moving gauge lines of the Bi belt conveyor.
The invention has the advantages that: the conveying system and the moving setting method greatly reduce the production stopping and moving setting times of continuous/semi-continuous exploitation process system equipment: the advancing degree of the strip mines is different, the annual moving times of the continuous/semi-continuous mining process system are also different, the sector steering of a single working surface belt conveyor is adopted for estimating a certain mine, the number of times of one-year stopping and moving is 8, and after the moving method is adopted, the number of times of one-year stopping and moving is less than 4 times, and even 1 time of stopping and moving in a plurality of years can be realized.
Greatly shortens the production stopping time of each shift setting: taking the working face length of 1.5km as an example, the production stopping time of each time of moving the continuous/semi-continuous mining process system equipment in the fan-shaped steering is about 7-15 days, by adopting the mode that a plurality of working face belt conveyors are connected in series and are arranged in a moving way, only the belt conveyor at the center of the fan-shaped steering is required to stop production, and the length of the belt conveyor is far less than 1.5km, so that the moving time can be controlled within 5-10 days.
In summary, the present invention increases the run time of a continuous/semi-continuous production process system by at least 20 days per year. The invention is matched with a belt conveyor which is parallel or approximately parallel to the belt conveyor at the fan rotation center, when the belt conveyor at the fan rotation center is shifted, the working face mining equipment and the transfer equipment continue to mine and transport materials through the belt conveyor, so that the shifting without stopping production can be realized, and the running time of a continuous/semi-continuous mining process system can be increased by about 80 days each year.
Drawings
FIG. 1 is a schematic diagram of the construction of an open pit mining work surface belt conveyor system of example 1;
FIG. 2 is a schematic diagram showing the steps of the belt conveyor system for open pit mining operation of example 1;
FIG. 3 is a schematic view showing the construction of a strip conveyor system for open pit mining according to example 2;
FIG. 4 is a schematic diagram showing the steps of the belt conveyor system for open pit mining operation of example 2;
FIG. 5 is a schematic view showing the construction of a strip conveyor system for open pit operation according to example 3;
FIG. 6 is a schematic diagram showing the steps of the belt conveyor system for open pit mining operation of example 3;
FIG. 7 is a schematic view showing the construction of a strip conveyor system for open pit mining according to example 4;
fig. 8 is a schematic diagram showing the moving steps of the strip conveyor system for open pit mining according to example 4.
The numbers in the figures are illustrated as follows: 100-A1 belt conveyor, 1-B1 belt conveyor, 2-B2 belt conveyor, 3-B3 belt conveyor, 4-B4 belt conveyor.
Detailed Description
As shown in fig. 1-8, the invention discloses an open-pit mining working surface belt conveyor system, which comprises n groups of belt conveyors, wherein the n groups of belt conveyors are sequentially connected in series and overlap from front to back (taking B1 as front and Bn as back);
the machine head of the B1 belt conveyor is arranged at the center of the fan-shaped steering, and the B1 belt conveyor transfers working face materials to equipment of the end slope continuous conveying system; the other belt conveyor heads are connected with the tail of the front belt conveyor, and the front belt conveyor is used for transferring the working face materials; working face excavating equipment and matched transfer equipment can transfer the excavated working face materials to any belt conveyor;
wherein, n groups of belt conveyors are B1, B2 … … Bn outwards along the circle center of the fan shape in turn, n is a natural number which is more than or equal to 2, generally n is 2-5 groups, and the heads of the belt conveyors face the circle center direction.
The invention also discloses a sector steering and moving method of the strip conveyor system for the open-pit mine work, which comprises the following steps:
step 1: working face mining and transferring equipment firstly extracts working face materials corresponding to a Bn belt conveyor on the Bn belt conveyor at the outermost side;
step 2: after the working face materials corresponding to the belt conveyor are extracted, the working face extraction and transfer equipment moves to the front belt conveyor to continue extracting and transporting the working face materials corresponding to the front belt conveyor (the working face extraction and transfer equipment is used as the current belt conveyor all the time, the front or rear belt conveyor is dynamically determined by taking the belt conveyor corresponding to the front or rear working face extraction and transfer equipment as a reference, and the working face extraction and transfer equipment is used as the reference;
step 3: judging whether the rear mining face reaches a moving design line or not; if not, carrying out the step 4; if so, performing the step 5;
step 4: the rear belt conveyor is subjected to sector-shaped moving with the machine head as the center, and after the moving is finished, the working face mining and transferring equipment immediately moves to the rear belt conveyor; and returning to the step 2;
step 5: after the working face materials corresponding to the belt conveyor are extracted, the working face extracting and transferring equipment is moved to the front belt conveyor to continuously extract and transport the working face materials corresponding to the front belt conveyor;
step 6: judging whether the rear mining face reaches a moving design line or not; if not, performing the step 7; if so, performing the step 5;
step 7: sector-shaped moving is carried out by taking a machine head of a belt conveyor as the center; after the transfer is completed, the working face mining and transferring equipment immediately moves to a Bn belt conveyor; and returning to the step 2;
step 8: when the working face mining and transferring equipment moves onto the B1 belt conveyor and the B2 belt conveyor reaches the moving gauge line, stopping the steps, after the working face mining and transferring equipment finishes mining the working face materials, stopping the machine, sequentially moving and setting all the belt conveyors, after the B1 belt conveyor is moved and set, starting the working face mining and transferring equipment to mine the working face materials corresponding to the B1 belt conveyor, continuously moving and setting all the belt conveyors, and after the moving and setting of all the belt conveyors are finished, moving the working face mining and transferring equipment onto the Bn belt conveyor, namely finishing one-time fan-shaped steering moving and setting.
Wherein: the moving gauge line of each strip conveyor is established by taking the previous strip conveyor as a reference: and determining a point at the tail of the front belt conveyor along the advancing direction at a position with a width of a picking width, and taking rays from the head of the front belt conveyor to the point, wherein the rays are the moving gauge line of the belt conveyor.
Preferably, the movement is performed from front to back, and each belt conveyor is moved by a maximum movable amount.
Preferably: the lengths of the belt conveyors are equal or increase from front to back.
Further, the length ratio of each section of belt conveyor is 1:2:3: … …
The invention is further illustrated and described by the following specific examples. It should be noted that, in the embodiment, each action is taken as one step according to the actual situation, and thus, there is a difference between the steps of the embodiments.
Example 1
The strip mine working face belt conveyor comprises a B1 belt conveyor 1 and a B2 belt conveyor 2, wherein the B1 belt conveyor 1 and the B2 belt conveyor 2 are connected in series and overlapped. The B1 belt conveyor 1 is arranged in parallel or approximately parallel with the corresponding working surface, the head of the B1 belt conveyor 1 is arranged at the center of the fan-shaped steering, and the B1 belt conveyor 1 transfers the working surface materials to the equipment of the end slope continuous conveying system; the B2 belt conveyor 2 is arranged in parallel or approximately parallel with the corresponding working surface, the head of the B2 belt conveyor 2 is connected with the tail of the B1 belt conveyor 1, and the working surface materials are transferred to the B1 belt conveyor 1. The working face mining equipment and the matched transfer equipment transfer the mined working face materials to the B1 belt conveyor 1 or the B2 belt conveyor 2.
The sector steering and transferring method of the strip mine working surface belt type conveying system comprises the following steps:
step 1: working face materials corresponding to the B2 belt conveyor 2 are extracted by working face extraction and transfer equipment;
step 2: after the working face materials corresponding to the B2 belt conveyor 2 are extracted, the working face extracting and transferring equipment is moved to the B1 belt conveyor 1 to continuously extract and transport the working face materials corresponding to the B1 belt conveyor 1. Simultaneously, the B2 belt conveyor 2 is arranged in a fan-shaped manner by taking the machine head as the center;
step 3: after the B2 belt conveyor 2 is moved and set up, the working face mining and transferring equipment is moved back to the B2 belt conveyor 2;
step 4: repeating the steps 1-3 for a plurality of times;
step 5: when the moving gauge line is reached, working face materials corresponding to the B2 belt conveyor 2 are collected, working face excavating and transferring equipment is moved to the B1 belt conveyor 1, and then the working face materials corresponding to the B1 belt conveyor 1 are continuously collected;
step 6: the B1 belt conveyor 1 is arranged in a fan shape by taking the center of the fan-shaped steering as the center, and the B2 belt conveyor 2 is arranged in a manner of being connected with the tail of the B1 belt conveyor 1 and being arranged in a straight line with the B2 belt conveyor 2;
step 7: after the B2 belt conveyor 2 and the B1 belt conveyor 1 are moved, the working face mining and transferring equipment is moved back onto the B2 belt conveyor 2.
The steps 1-7 are a complete moving flow unit of the working surface belt conveyor, and the operations of the steps 1-7 are repeated to realize continuous sector steering of the working surface belt conveyor.
When the fan shape is shifted, the angle of each shift depends on the central angle of the arc corresponding to the last single mining depth (the mining depth is approximately equal to the arc length). In this embodiment, two belt conveyors are used, so that the radius of the arc is reduced, and the moving angle is increased. Taking the equal length of B1 and B2 as an example, when the original belt conveyor works, the corresponding mining face is moved and set twice, in this embodiment, B1 is moved and set once, B2 is moved and set twice, which is equivalent to 75% of the original workload, and the production stopping time is half of the original movement and setting mode (only when B1 is moved and set once).
Example 2
On the basis of example 1, the strip mine face was augmented with an A1 belt conveyor 100. The A1 belt conveyor 100 is arranged parallel or approximately parallel to the working surface and the B1 belt conveyor 1 between the B1 belt conveyor 1 and the corresponding working surface, and the nose of the A1 belt conveyor 100 transfers the working surface material to the equipment of the end slope continuous conveying system at the center of the fan-shaped turning. The face mining apparatus and the associated transfer apparatus transfer the mined face material to the B1 belt conveyor 1 or the B2 belt conveyor 2 or the A1 belt conveyor 100.
In this embodiment, the fan-shaped steering and transferring method of the strip conveyor system for the open pit mine comprises the following steps:
step 1-4: as in example 1;
step 5: repeating the step 1 and the step 2;
step 6: after the B2 belt conveyor 2 is moved and arranged, the working face mining and transferring equipment continues to mine and transport the working face materials corresponding to the B1 belt conveyor 1 until the working face materials corresponding to the B1 working face belt conveyor are mined and transported;
step 7: the working face mining and transferring equipment is arranged on the B2 belt conveyor 2 in a moving way to mine and transport working face materials corresponding to the B2 belt conveyor 2;
step 8: while excavating and transporting the working face material corresponding to the B2 belt conveyor 2, rapidly and fan-shaped moving the A1 belt conveyor 100, and before excavating and transporting the working face material corresponding to the B2 belt conveyor 2, moving the A1 belt conveyor 100;
step 9: after the working face materials corresponding to the B2 belt conveyor 2 are extracted and transported, the working face extraction and transfer equipment is moved to the A1 belt conveyor 100 to extract and transport the working face materials corresponding to the B1 belt conveyor 1, and the working face materials are transferred to equipment of the end slope continuous transport system through the A1 belt conveyor 100;
step 10: the B1 belt conveyor 1 and the B2 belt conveyor 2 are arranged in a moving way, so that the B1 belt conveyor 1 and a corresponding working surface are arranged in parallel or approximately in parallel, the head of the B1 belt conveyor 1 is positioned at the center of fan-shaped steering, and the B1 belt conveyor 1 transfers working surface materials to equipment of an end slope continuous conveying system; arranging the B2 belt conveyor 2 and the corresponding working surface in parallel or approximately in parallel, connecting the head of the B2 belt conveyor 2 with the tail of the B1 belt conveyor 1, and transferring the working surface materials to the B1 belt conveyor 1;
step 11: after the B1 belt conveyor 1 and the B2 belt conveyor 2 are moved, the working face mining and transferring apparatus is moved onto the B2 belt conveyor 2.
The steps 1-11 are a complete moving flow unit of the working surface belt conveyor, and the operations of the steps 1-11 are repeated to realize continuous sector steering of the working surface belt conveyor.
Example 3
On the basis of example 1, the strip mine working face was added with a B3 belt conveyor 3. The B3 belt conveyor 3 is arranged in parallel or approximately parallel with the corresponding working surface, the head of the B3 belt conveyor 3 is connected with the tail of the B2 belt conveyor 2, and the working surface materials are transferred to the B2 belt conveyor 2. The working face mining equipment and the matched transfer equipment transfer the mined working face materials to the B1 belt conveyor 1 or the B2 belt conveyor 2 or the B3 belt conveyor 3.
In this embodiment, the fan-shaped steering and transferring method of the strip conveyor system for the open pit mine comprises the following steps:
step 1: working face excavating and transferring equipment excavates working face materials corresponding to the B3 belt conveyor 3 on the B3 belt conveyor;
step 2: after the working face materials corresponding to the B3 belt conveyor 3 are extracted, the working face extracting and transferring equipment is moved to the B2 belt conveyor 2 to continuously extract and transport the working face materials corresponding to the B2 belt conveyor 2. Simultaneously, the B3 belt conveyor 3 is arranged in a fan-shaped manner by taking the machine head as the center;
step 3: after the B3 belt conveyor 3 is moved and set, the working face mining and transferring equipment is moved back to the B3 belt conveyor 3;
step 4: repeating the steps 1-3 for a plurality of times;
step 5: after the moving arrangement line is reached, the working face mining and transferring equipment finishes mining the working face materials corresponding to the B3 belt conveyor 3 on the B3 belt conveyor, and the working face mining and transferring equipment is moved to the B2 belt conveyor 2 and continues mining the working face materials corresponding to the B2 belt conveyor 2;
step 6: after the working face materials corresponding to the B2 belt conveyor 2 are extracted, the working face extracting and transferring equipment is moved to the B1 belt conveyor 1 to continuously extract and transport the working face materials corresponding to the B1 belt conveyor 1. Simultaneously, the B2 belt conveyor 2 is arranged in a fan-shaped manner by taking the machine head as the center; the B3 belt conveyor 3 is arranged in parallel or approximately parallel with the working surface corresponding to the B3 belt conveyor 3 in a mode of being connected with the tail of the B2 belt conveyor 2;
step 7: after the B2 belt conveyor 2 and the B3 belt conveyor 3 are moved and arranged, the working face mining and transferring equipment is moved back to the B3 belt conveyor 3;
step 8: repeating the steps 1-7 for a plurality of times;
step 9: after the operation of the steps 1-5 is carried out, after working face materials corresponding to the B2 belt conveyor 2 are extracted, the working face extracting and transferring equipment is moved to the B1 belt conveyor 1 to continuously extract and transport the working face materials corresponding to the B1 belt conveyor 1;
step 10: after the working surface materials corresponding to the B1 belt conveyor 1 are extracted, the B1 belt conveyor 1 is arranged in a fan shape by taking the center of the fan-shaped steering as the center, the B2 belt conveyor 2 is arranged in a moving manner to be parallel or approximately parallel to the working surface which is connected with the tail of the B1 belt conveyor 1 and corresponds to the B2 belt conveyor 2, and the B3 belt conveyor 3 is arranged in a moving manner to be parallel or approximately parallel to the working surface which is connected with the tail of the B2 belt conveyor 2 and corresponds to the B3 belt conveyor 3;
step 11: after the B1 belt conveyor 1, the B2 belt conveyor 2 and the B3 belt conveyor 3 are moved, the working face mining and transferring equipment is moved back onto the B3 belt conveyor 3.
The steps 1-11 are a complete moving flow unit of the working surface belt conveyor, and the operations of the steps 1-11 are repeated to realize continuous sector steering of the working surface belt conveyor.
In this embodiment, three belt conveyors are adopted, taking B1, B2, and B3 as examples, when B1 is moved and set once, B2 is moved and set twice, and B3 is moved and set four times, the moved angle and the corresponding mining face need to be set up four times when the original one belt conveyor performs operation, which is equivalent to the workload of moving and setting the B1 conveyor 12 times, and the downtime is equivalent to the workload of moving and setting the B1 conveyor 9 times, while in this embodiment, the downtime is equivalent to the workload of moving and setting the B1 only 7 times, and the downtime is only equivalent to the time of moving and setting the B1 conveyor once. Compared with the prior art, the method is equivalent to 58% of the prior work load, and the production stopping time is 11% of the prior moving mode. Even if the influence of factors such as mining angles is removed, the total evaluation is carried out, the workload is reduced by more than half, and the production stopping time is 12-13% of that of the original mode.
In addition, when the fan-shaped is moved and established, there is the difference between the mining area of fan-shaped mining face and rectangle, to the mining area outside the fan-shaped mining face, need add the mining conveyer belt, this scheme only need adjust outside Bn belt conveyor's length can, compare former technology, increase whole length, efficient, with low costs, and the adjustment is convenient.
Example 4
On the basis of example 3, the strip mine face was augmented with an A1 belt conveyor 100. The A1 belt conveyor 100 is arranged parallel or approximately parallel to the working surface and the B1 belt conveyor 1 between the B1 belt conveyor 1 and the corresponding working surface, and the nose of the A1 belt conveyor 100 transfers the working surface material to the equipment of the end slope continuous conveying system at the center of the fan-shaped turning. Face extraction equipment and matched transfer equipment transfer extracted face materials to the B1 belt conveyor 1 or the B2 belt conveyor 2 or the B3 belt conveyor 3 or the A1 belt conveyor 100.
In this embodiment, the fan-shaped steering and transferring method of the strip conveyor system for the open pit mine comprises the following steps:
step 1-8: same as in example 3;
step 9: then carrying out the steps 1-4;
step 10: the working face mining and transferring equipment is arranged on the B1 belt conveyor 1 after mining the working face materials corresponding to the B1 belt conveyor 1 on the B3 belt conveyor 3;
step 11: after the working face materials corresponding to the B1 belt conveyor 1 are extracted, the working face extracting and transferring equipment is moved to the B2 belt conveyor 2 and then the working face materials corresponding to the B2 belt conveyor 2 are extracted continuously;
step 12: while excavating and transporting the working face material corresponding to the B2 belt conveyor 2, rapidly and fan-shaped moving the A1 belt conveyor 100, and before excavating and transporting the working face material corresponding to the B2 belt conveyor 2, moving the A1 belt conveyor 100;
step 13: after the working face materials corresponding to the B2 belt conveyor 2 are extracted and transported, the working face extraction and transfer equipment is moved to the A1 belt conveyor 100 to extract and transport the working face materials corresponding to the B1 belt conveyor 1, and the working face materials are transferred to equipment of the end slope continuous transport system through the A1 belt conveyor 100;
step 14: the B1 belt conveyor 1, the B2 belt conveyor 2 and the B3 belt conveyor 3 are arranged in a moving way, so that the B1 belt conveyor 1 is arranged in a fan-shaped way to be parallel or approximately parallel to the corresponding working surface, the head of the B1 belt conveyor 1 is arranged in the center of fan-shaped steering, and the B1 belt conveyor 1 transfers working surface materials to equipment of an end slope continuous conveying system; arranging the B2 belt conveyor 2 and the corresponding working surface in parallel or approximately in parallel, connecting the head of the B2 belt conveyor 2 with the tail of the B1 belt conveyor 1, and transferring the working surface materials to the B1 belt conveyor 1; arranging the B3 belt conveyor 3 and the corresponding working surface in parallel or approximately in parallel, connecting the head of the B3 belt conveyor 3 with the tail of the B2 belt conveyor 2, and transferring the working surface materials to the B2 belt conveyor 2;
step 15: after the B1 belt conveyor 1, the B2 belt conveyor 2, and the B3 belt conveyor 3 are moved, the working face mining and transferring apparatus is moved onto the B3 belt conveyor 3.
Above, the steps 1-15 are a complete process unit for moving the working surface belt conveyor, and the operations of steps 1-15 are repeated to realize continuous sector steering of the working surface belt conveyor.
Example 5
On the basis of example 3, the strip mine working face was added with a B4 belt conveyor 4. The B4 belt conveyor 4 is arranged in parallel or approximately parallel with the corresponding working surface, the head of the B4 belt conveyor 4 is connected with the tail of the B3 belt conveyor 3, and the working surface materials are transferred to the B3 belt conveyor 3. The working face mining equipment and the matched transfer equipment transfer the mined working face materials to the B1 belt conveyor 1 or the B2 belt conveyor 2 or the B3 belt conveyor 3 or the B4 belt conveyor 4.
In this embodiment, the fan-shaped steering and transferring method of the strip conveyor system for the open pit mine comprises the following steps:
step 1: working face excavating and transferring equipment firstly excavates working face materials corresponding to the B4 belt conveyor 4;
step 2: after the working face materials corresponding to the B4 belt conveyor 4 are extracted, the working face extracting and transferring equipment is moved to the B3 belt conveyor 3 to continuously extract and transport the working face materials corresponding to the B3 belt conveyor 3. Meanwhile, the B4 belt conveyor 4 is arranged in a fan-shaped manner by taking the machine head as the center;
step 3: after the B4 belt conveyor 4 is moved and set, the working face mining and transferring equipment is moved back to the B4 belt conveyor 4;
step 4: repeating the steps 1-3 for a plurality of times;
step 5: after the moving gauge line is reached, the working face mining and transferring equipment finishes mining the working face materials corresponding to the B4 belt conveyor 4 on the B4 belt conveyor 4, and then moves the working face mining and transferring equipment to the B3 belt conveyor 3 to continuously mine the working face materials corresponding to the B3 belt conveyor 3;
step 6: after the working face materials corresponding to the B3 belt conveyor 3 are extracted, the working face extracting and transferring equipment is moved to the B2 belt conveyor 2 to continuously extract and transport the working face materials corresponding to the B2 belt conveyor 2. Simultaneously, the B3 belt conveyor 3 is arranged in a fan-shaped manner by taking the machine head as the center; the B4 belt conveyor 4 is arranged in parallel or approximately parallel with the working surface corresponding to the B4 belt conveyor 4 and connected with the tail of the B3 belt conveyor 3;
step 7: after the B3 belt conveyor 3 and the B4 belt conveyor 4 are moved, the working face mining and transferring equipment is moved back to the B4 belt conveyor 4;
step 8: repeating the steps 1-7 for a plurality of times;
step 9: after the moving gauge line is reached, carrying out the operation of the steps 1-5, and after working face materials corresponding to the B3 belt conveyor 3 are extracted, moving working face extracting and transferring equipment to the B2 belt conveyor 2 to continuously extract and transport the working face materials corresponding to the B2 belt conveyor 2;
step 10: after the working face materials corresponding to the B2 belt conveyor 2 are extracted, the working face extracting and transferring equipment is moved to the B1 belt conveyor 1 to continuously extract and transport the working face materials corresponding to the B1 belt conveyor 1. Simultaneously, the B2 belt conveyor 2 is arranged in a fan-shaped manner by taking the machine head as the center; the B3 belt conveyor 3 is arranged in parallel or approximately parallel with the working surface corresponding to the B3 belt conveyor 3 in a mode of being connected with the tail of the B2 belt conveyor 2; the B4 belt conveyor 4 is arranged in parallel or approximately parallel with the working surface corresponding to the B4 belt conveyor 4 and connected with the tail of the B3 belt conveyor 3;
step 11: after the B2 belt conveyor 2, the B3 belt conveyor 3 and the B4 belt conveyor 4 are moved, the working face mining and transferring equipment moves back to the B4 belt conveyor 4, and the working face materials corresponding to the B4 belt conveyor 4 are mined and transported;
step 12: repeating the steps 1-11 for a plurality of times;
step 13: carrying out the steps 1-9;
step 14: after the working face materials corresponding to the B2 belt conveyor 2 are extracted, the working face extracting and transferring equipment is moved to the B1 belt conveyor 1 to continuously extract and transport the working face materials corresponding to the B1 belt conveyor 1;
step 15: the B1 belt conveyor 1 is arranged in a fan shape by taking the center of the fan shape steering as the center, the B2 belt conveyor 2 is arranged to be connected with the tail of the B1 belt conveyor 1 and to be parallel or approximately parallel to the working surface corresponding to the B2 belt conveyor 2, the B3 belt conveyor 3 is arranged to be connected with the tail of the B2 belt conveyor 2 and to be parallel or approximately parallel to the working surface corresponding to the B3 belt conveyor 3, and the B4 belt conveyor 4 is arranged to be connected with the tail of the B3 belt conveyor 3 and to be parallel or approximately parallel to the working surface corresponding to the B4 belt conveyor 4;
step 16: after the B1 belt conveyor 1, the B2 belt conveyor 2, the B3 belt conveyor 3 and the B4 belt conveyor 4 are moved, the working face mining and transferring equipment is moved back to the B4 belt conveyor 4, and the working face materials corresponding to the B4 belt conveyor 4 are mined and transported.
The steps 1-16 are a complete moving flow unit of the working surface belt conveyor, and the operations of the steps 1-16 are repeated to realize continuous sector steering of the working surface belt conveyor.
In summary, the conveying system and the moving method of the invention greatly reduce the production stopping and moving times of continuous/semi-continuous exploitation process system equipment: the advancing degree of the strip mines is different, the annual moving times of the continuous/semi-continuous mining process system are also different, the sector steering of a single working surface belt conveyor is adopted for estimating a certain mine, the number of times of one-year stopping and moving is 8, and after the moving method is adopted, the number of times of one-year stopping and moving is less than 4 times, and even 1 time of stopping and moving in a plurality of years can be realized.
Greatly shortens the production stopping time of each shift setting: taking the working face length of 1.5km as an example, the production stopping time of each time of moving the continuous/semi-continuous mining process system equipment in the fan-shaped steering is about 7-15 days, by adopting the mode that a plurality of working face belt conveyors are connected in series and are arranged in a moving way, only the belt conveyor at the center of the fan-shaped steering is required to stop production, and the length of the belt conveyor is far less than 1.5km, so that the moving time can be controlled within 5-10 days.
In summary, the present invention increases the run time of a continuous/semi-continuous production process system by at least 20 days per year. The invention is matched with a belt conveyor which is parallel or approximately parallel to the belt conveyor at the fan rotation center, when the belt conveyor at the fan rotation center is shifted, the working face mining equipment and the transfer equipment continue to mine and transport materials through the belt conveyor, so that the shifting without stopping production can be realized, and the running time of a continuous/semi-continuous mining process system can be increased by about 80 days each year.
Claims (1)
1. A sector steering and transferring method of an open-pit mining working surface belt type conveying system is characterized in that:
the strip mine working surface belt conveyor system comprises n groups of belt conveyors, and the n groups of belt conveyors are sequentially connected in series and overlapped from front to back;
the machine head of the B1 belt conveyor is arranged at the center of the fan-shaped steering, and the B1 belt conveyor transfers working face materials to equipment of the end slope continuous conveying system; the other belt conveyor heads are connected with the tail of the front belt conveyor, and the front belt conveyor is used for transferring the working face materials; working face excavating equipment and matched transfer equipment can transfer the excavated working face materials to any belt conveyor;
wherein, n groups of belt conveyors are sequentially B1, B2 … … Bn outwards along the circle center of the fan shape, n is a natural number which is more than or equal to 2, and the machine heads of the belt conveyors face the circle center direction;
the sector steering and transferring method of the strip mine working surface belt type conveying system comprises the following steps:
step 1: working face materials corresponding to the Bn belt conveyor are extracted on the Bn belt conveyor at the outermost side by working face extraction and transfer equipment;
step 2: after the working face materials corresponding to the belt conveyor are extracted, the working face extracting and transferring equipment is moved to the front belt conveyor to continuously extract and transport the working face materials corresponding to the front belt conveyor;
step 3: judging whether the rear mining face reaches a moving design line or not; if not, carrying out the step 4; if so, performing the step 5;
step 4: the rear belt conveyor is subjected to sector-shaped moving with the machine head as the center, and after the moving is finished, the working face mining and transferring equipment immediately moves to the rear belt conveyor; and returning to the step 2;
step 5: after the working face materials corresponding to the belt conveyor are extracted, the working face extracting and transferring equipment is moved to the front belt conveyor to continuously extract and transport the working face materials corresponding to the front belt conveyor;
step 6: judging whether the rear mining face reaches a moving design line or not; if not, performing the step 7; if so, performing the step 5;
step 7: sector-shaped moving is carried out by taking a machine head of a belt conveyor as the center; after the transfer is completed, the working face mining and transferring equipment immediately moves to a Bn belt conveyor; and returning to the step 2;
step 8: when the working face mining and transferring equipment moves onto the B1 belt conveyor and the B2 belt conveyor reaches the moving gauge line, after the working face mining and transferring equipment finishes mining working face materials, stopping, sequentially moving and setting all the belt conveyors, after the B1 belt conveyor moving and setting is completed, starting the working face mining and transferring equipment to mine working face materials corresponding to the B1 belt conveyor, continuously moving and setting the working face mining and transferring equipment to the Bn belt conveyor after all the belt conveyors moving and setting are completed, and then completing one-time fan-shaped steering and moving and setting.
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