Construction method for rapid excavation of potash mine

Abstract

The application discloses a construction method for rapid excavation of a potassium salt mine, and comprises the following steps: excavation branch roadway planning, excavation preparation of a first area, excavation of the first area, excavation preparation of a second area, excavation of the second area, excavation preparation of a third area, excavation of the third area, and after the completion of the excavation operation, repeating the above steps to move to the next excavation face for excavation. The application solves the problems of discontinuous post-excavation transportation, difficult and long period of moving and inverting the face, realizes rapid excavation of the roadway, rapid transportation of materials and rapid moving of equipment, and improves the excavation efficiency of the whole mining area.

Description

Technical Field

[0001] This invention relates to the field of tunnel excavation technology, specifically to a construction method for rapid tunneling in potash mines. Background Technology

[0002] The main problems faced by potash mines are discontinuous transport behind the tunneling machine, short tunnel face length, and frequent face relocation. Existing tunneling systems mainly operate in two modes: the first uses a muck loader and mine cars for transport behind the tunneling machine; the second uses a bridge-type transfer conveyor, a self-propelled tail section, and a retractable belt conveyor. The first mode is intermittent transport, resulting in discontinuous transport and low tunneling efficiency. The second mode is continuous transport, resulting in high tunneling efficiency, but it has two main problems: one is that maintenance vehicles normally pass alongside the main haulage conveyor, and the retractable belt conveyor's connection to the main haulage conveyor blocks this passage; the other is the difficulty of face relocation, requiring disassembly of each sub-unit and transport by truck to the next working face, resulting in long relocation cycles and severely impacting the overall tunneling efficiency of the mining area. Summary of the Invention

[0003] In view of this, the purpose of this invention is to address the shortcomings of the prior art by providing a construction method for rapid tunneling in potash mines, which can achieve rapid tunneling, continuous transportation, and rapid retreat.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A construction method for rapid tunneling in potash mines includes the following steps:

[0006] 1) Branch tunnel planning: The branch tunnel is divided into three sections according to its length, namely Section I, Section II and Section III; the central axis of the branch tunnel is used as the dividing line to separate the upper and lower sections, and the tunneling is carried out alternately between the upper and lower sections. The length of each section is no more than 600 meters.

[0007] 2) Preparation for tunneling in Zone I: Install the main roadway belt conveyor on the left side of the roadway; install the tunneling machine at the entrance of the branch roadway to be opened; install the No. 1 flexible transport robot behind the tunneling machine; install the No. 1 swing bridge belt conveyor on the head of the No. 1 flexible transport robot; the No. 1 swing bridge belt conveyor and the main roadway belt conveyor are connected without contact; the tail of the No. 1 flexible transport robot is connected to the tunneling machine.

[0008] 3) Zone I tunneling: The tunneling machine, No. 1 flexible transport robot, and No. 1 swing bridge belt conveyor work together to complete the tunneling and transportation in Zone I, and then stop the tunneling operation; During the operation, No. 1 swing bridge belt conveyor will occupy the transportation channel. When the transport vehicle passes, No. 1 swing bridge belt conveyor will move to one side of the roadway to allow the transport vehicle to pass normally.

[0009] 4) Preparation for tunneling in Zone II: Move the pre-installed No. 2 flexible transport robot and No. 2 swing bridge belt conveyor to the entrance of the branch roadway. The No. 1 swing bridge belt conveyor and the No. 2 flexible transport robot are connected to each other without contact. The No. 2 swing bridge belt conveyor and the main roadway belt conveyor are connected to each other without contact.

[0010] 5) Zone II tunneling: The No. 2 flexible transport robot and the No. 2 swing bridge belt conveyor remain stationary. The tunneling machine, the No. 1 flexible transport robot, and the No. 1 swing bridge belt conveyor work together to complete the tunneling and transport in Zone II. Tunneling operations are then stopped.

[0011] 6) Preparation for tunneling in Zone III: Remove the No. 2 swing bridge belt conveyor at the head of the No. 2 flexible transport robot, move the pre-installed No. 3 flexible transport robot to the head of the No. 2 flexible transport robot, connect the head of the No. 2 flexible transport robot and the tail of the No. 3 flexible transport robot, and place the head of the No. 3 flexible transport robot close to the entrance of the branch roadway. Install the No. 2 swing bridge belt conveyor at the head of the No. 3 flexible transport robot, and make a non-contact side-discharge connection between the No. 2 swing bridge belt conveyor and the main roadway belt conveyor, keeping it in place.

[0012] 7) Zone III tunneling: The tunneling machine, No. 1 flexible transport robot, and No. 1 swing bridge belt conveyor work together to complete the tunneling and transportation in Zone III, and then the tunneling operation is stopped;

[0013] 8) After completing the tunneling operation, proceed in sequence from steps 1) to 7) to move to the next tunneling face for tunneling.

[0014] Preferably, the transport channel between the main conveyor belt and the No. 1 flexible transport robot in step 2) is not less than 3m.

[0015] Preferably, in step 3), the distance between the tail of the #2 flexible transport robot and the tail of the #1 flexible transport robot is not less than 18 meters. This ensures that the #1 flexible transport robot can bend and advance in stages. Preferably, the swing amplitude of the #1 and #2 swing bridge conveyors is ±90°, and the transfer length is not less than 15 meters. This ensures that maintenance vehicles can pass through and that the conveyors can properly connect with the equipment behind them.

[0016] The beneficial effects of this invention are:

[0017] The flexible transport robot of this invention has the functions of bending, moving forward, moving backward, and transporting. It can follow the tunneling machine for tunneling and transporting. The swing bridge belt conveyor set at the machine head has the functions of receiving materials, swinging, and side unloading. It is used to connect with the main roadway belt conveyor and avoid the passage of maintenance vehicles.

[0018] This invention solves the problems of discontinuous transportation, difficult relocation and long cycle in potash mine tunneling by controlling the arrangement of the main roadway belt conveyor, No. 1 flexible transportation robot, No. 2 flexible transportation robot, No. 3 flexible transportation robot, No. 1 swing bridge belt conveyor and No. 2 swing bridge belt conveyor in potash mine tunneling. It realizes rapid tunneling, rapid material transportation and rapid equipment relocation, and improves the tunneling efficiency of the entire mining area. Attached Figure Description

[0019] Figure 1 This is a diagram showing the layout of the branch tunnel entrances according to the present invention;

[0020] Figure 2 Schematic diagram of preparation for tunneling in Zone I;

[0021] Figure 3 This is a schematic diagram of the tunneling process in Zone I.

[0022] Figure 4 Schematic diagram for tunneling preparation in Zone II;

[0023] Figure 5 This is a schematic diagram of the tunneling in Zone II;

[0024] Figure 6 Schematic diagram of preparation for tunneling in Zone III;

[0025] Figure 7 This is a schematic diagram of the tunneling process in Zone III.

[0026] In the diagram: 1. Conveyor, 2. Tunneling machine, 3. Flexible transport robot #1, 4. Swinging bridge belt conveyor #1, 5. Flexible transport robot #2, 6. Swinging bridge belt conveyor #2, 7. Flexible transport robot #3. Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] A construction method for rapid tunneling in potash mines includes the following steps:

[0029] 1) Branch tunnel planning: The branch tunnel is divided into three sections according to its length: Section I, Section II, and Section III. The central axis of the branch tunnel serves as the dividing line between the upper and lower sections. Tunneling is carried out alternately between the upper and lower sections. The length of each section should not exceed 600 meters. See [link to relevant documentation]. Figure 1 ;

[0030] 2) Preparation for tunneling in Zone I: Install the main roadway belt conveyor 1 on the left side of the roadway; install the tunneling machine at the entrance of the branch roadway to be opened, and install the No. 1 flexible transport robot 3 behind the tunneling machine. The transport channel between the main roadway belt conveyor 1 and the No. 1 flexible transport robot 3 shall not be less than 3m; a No. 1 swing bridge belt conveyor 4 shall be installed on the head of the No. 1 flexible transport robot 3. The No. 1 swing bridge belt conveyor 4 shall be connected to the main roadway belt conveyor 1 without contact on the side, and the tail of the No. 1 flexible transport robot 3 shall be connected to the tunneling machine. See Figure 2 ;

[0031] 3) Zone I Excavation: Tunneling machine 2, flexible transport robot 3, and swing bridge conveyor 4 work together to complete the tunneling and transportation in Zone I, then cease tunneling operations. During operation, swing bridge conveyor 4 will occupy the transportation channel. When transport vehicles pass, swing bridge conveyor 4 will move to one side of the roadway to allow normal passage. See [link to relevant documentation]. Figure 3 ;

[0032] 4) Preparation for tunneling in Zone II: Move the pre-installed No. 2 flexible transport robot 5 and No. 2 swing bridge belt conveyor 6 to near the entrance of the branch roadway (e.g., Figure 3 (Location), where the distance between the tail of the #2 flexible transport robot 5 and the tail of the #1 flexible transport robot 3 is not less than 18 meters, ensuring that the #1 flexible transport robot 3 can bend and advance in stages; the #1 swing bridge belt conveyor 4 and the #2 flexible transport robot 5 have a non-contact side unloading overlap, and the #2 swing bridge belt conveyor 6 and the main roadway belt conveyor 1 have a non-contact side unloading overlap, see Figure 4 ;

[0033] 5) Zone II Excavation: Flexible transport robot #2 (5) and swing bridge conveyor #2 (6) remain stationary. Tunneling machine #2, flexible transport robot #1 (3), and swing bridge conveyor #1 (4) work together to complete the excavation and transport in Zone II. Tunneling operations cease. See [link / details]. Figure 5 ;

[0034] 6) Preparation for tunneling in Zone III: Remove the No. 2 swing bridge conveyor belt 6 from the head of the No. 2 flexible transport robot 5. Move the pre-installed No. 3 flexible transport robot 7 to the head of the No. 2 flexible transport robot 5. Connect the head of the No. 2 flexible transport robot 5 and the tail of the No. 3 flexible transport robot 7, and move them to... Figure 6 Position: Install #2 swing bridge belt conveyor 6 at the head of #3 flexible transport robot 7. #2 swing bridge belt conveyor 6 and main road belt conveyor 1 are connected without contact and side unloading overlap, keeping them stationary.

[0035] 7) Zone III Excavation: Tunneling machine 2, flexible transport robot 3, and swing bridge conveyor 4 work together to complete the tunneling and transport in Zone III. Tunneling operations cease. See [link / details]. Figure 7 ;

[0036] 8) After completing the tunneling operation, proceed in sequence from steps 1) to 7) to move to the next tunneling face for tunneling.

[0037] The No. 1 and No. 2 swing bridge belt conveyors can swing at ±90°, with a transfer length of not less than 15 meters, ensuring that they can avoid the passage of maintenance vehicles and properly connect with the equipment behind them.

[0038] By changing the arrangement of the main roadway belt conveyor, No. 1 flexible transport robot, No. 2 flexible transport robot, No. 3 flexible transport robot, No. 1 swing bridge belt conveyor, and No. 2 swing bridge belt conveyor in potash mine tunneling, the problems of discontinuous transportation in the rear of potash mine tunneling, difficulty in relocation and face turning, and long cycle were solved. This enabled rapid tunneling, rapid material transportation, and rapid equipment relocation, thereby improving the tunneling efficiency of the entire mining area.

[0039] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A construction method for rapid tunneling in potash mines, characterized in that, Includes the following steps: 1) Branch tunnel planning: The branch tunnel is divided into three sections according to its length, namely Section I, Section II and Section III; the central axis of the branch tunnel is used as the dividing line to separate the upper and lower sections, and the tunneling is carried out alternately between the upper and lower sections. The length of each section is no more than 600 meters. 2) Preparation for tunneling in Zone I: Install the main roadway belt conveyor (1) on the left side of the roadway in the main roadway; install the tunneling machine at the entrance of the branch roadway to be opened, and install the No. 1 flexible transport robot (3) behind the tunneling machine. The No. 1 swing bridge belt conveyor (4) is installed on the head of the No. 1 flexible transport robot (3). The No. 1 swing bridge belt conveyor (4) and the main roadway belt conveyor (1) are connected without contact and the tail of the No. 1 flexible transport robot (3) is connected with the tunneling machine. 3) Zone I tunneling: The tunneling machine (2), No. 1 flexible transport robot (3), and No. 1 swing bridge belt conveyor (4) work together to complete the tunneling and transportation in Zone I, and then stop the tunneling operation; During the operation, No. 1 swing bridge belt conveyor (4) will occupy the transportation channel. When the transport vehicle passes, No. 1 swing bridge belt conveyor (4) will move to one side of the roadway to allow the transport vehicle to pass normally; 4) Preparation for tunneling in Zone II: Move the pre-installed No. 2 flexible transport robot (5) and No. 2 swing bridge belt conveyor (6) to the entrance of the branch roadway. No. 1 swing bridge belt conveyor (4) and No. 2 flexible transport robot (5) are connected to each other without contact. No. 2 swing bridge belt conveyor (6) and main roadway belt conveyor (1) are connected to each other without contact. 5) Zone II tunneling: The No. 2 flexible transport robot (5) and the No. 2 swing bridge belt conveyor (6) remain stationary. The tunneling machine (2), the No. 1 flexible transport robot (3), and the No. 1 swing bridge belt conveyor (4) work together to complete the tunneling and transport in Zone II, and then the tunneling operation is stopped. 6) Preparation for tunneling in Zone III: Remove the No. 2 swing bridge belt conveyor (6) at the head of the No. 2 flexible transport robot (5), move the No. 3 flexible transport robot (7) that has been installed in advance to the head of the No. 2 flexible transport robot (5), connect the head of the No. 2 flexible transport robot (5) and the tail of the No. 3 flexible transport robot (7), and the head of the No. 3 flexible transport robot (7) is close to the entrance of the branch roadway. Install the No. 2 swing bridge belt conveyor (6) at the head of the No. 3 flexible transport robot (7), and connect the No. 2 swing bridge belt conveyor (6) with the main roadway belt conveyor (1) without contact and keep it in place. 7) Zone III tunneling: The tunneling machine (2), No. 1 flexible transport robot (3), and No. 1 swing bridge belt conveyor (4) work together to complete the tunneling and transport in Zone III, and then stop the tunneling operation; 8) After completing the tunneling operation, proceed in sequence from steps 1) to 7) to move to the next tunneling face for tunneling.

2. The construction method for rapid tunneling in potash mines according to claim 1, characterized in that, The transport channel between the main conveyor belt (1) and the No. 1 flexible transport robot (3) in step 2) shall be no less than 3m.

3. The construction method for rapid tunneling in potash mines according to claim 1, characterized in that, In step 4), the distance between the tail of the 2# flexible transport robot (5) and the tail of the 1# flexible transport robot (3) is not less than 18 meters.

4. The construction method for rapid tunneling in potash mines according to claim 1, characterized in that, The swing amplitude of the No. 1 swing bridge belt conveyor (4) and the No. 2 swing bridge belt conveyor (6) is ±90°, and the transfer length is not less than 15 meters.

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