Vertical shaft excavation system adopting wire saw method

Abstract

A vertical shaft excavation system adopting a wire saw method solves the problems that a vertical shaft excavation system is low in construction efficiency, large in investment, high in cost and long in construction period, a first guide hole and a second guide hole are formed in the upper end and the lower end of a vertical shaft, upper and lower annular beams and upper and lower wire saw machines are installed on the first guide hole and the second guide hole respectively, and upper and lower annular rails are installed on the upper and lower annular beams respectively; the upper cross beam stretches across an upper annular rail at the upper end of the vertical shaft, the lower cross beam stretches across a lower annular rail at the lower end of the vertical shaft, the lateral walking trolley and the forward walking trolley are QSC three-in-one motor-driven rigid wheels, the first upper rope sawing machine, the second upper rope sawing machine, the first lower rope sawing machine and the second lower rope sawing machine are respectively provided with a first driving wheel, a second driving wheel, a third driving wheel and a fourth driving wheel, and the first driving wheel and the fourth driving wheel are respectively located at the upper end and the lower end of a first guide hole. The second driving wheel and the third driving wheel are located at the upper end and the lower end of the second guide hole respectively, and the first-fourth driving wheels and the rope saw chain wind around the first-fourth driving wheels, the upper guide pulley and the lower guide pulley to form a closed loop.

Description

Technical Field

[0001] The present invention relates to a shaft excavation system. Background Art

[0002] Manual drilling and blasting is commonly used to expand the vertical shaft: The drilling and blasting method for various shafts in hydropower stations adopts the method of reverse drilling to set up pilot shafts and manual secondary blasting to expand the excavation. First, a ZFY3.5 / 150 / 500 reverse drilling rig is used to drill a 295mm pilot hole from top to bottom along the axis of the shaft, and then reverse pulls from bottom to top to form a 2.4m pilot shaft, and then the second expansion of the full section is carried out from top to bottom. The slag is manually dragged into the pilot shaft and slides into the lower slag discharge area, from 2.3m 3 The side-unloading loader is equipped with a 20t dump truck to discharge the slag in the horizontal tunnel under the water diversion.

[0003] The method is to excavate the hole by blasting from top to bottom, with smooth blasting around the perimeter. The depth of the single-cycle blasting hole is controlled within 2.2m. The hole is made by using a YTP-28 drilling rig, manual charging and networking. The advantages of this method are that it is relatively mature and the cost is relatively low. The disadvantages are that it requires more manpower, the construction branch hole needs to be opened first, and the safety is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a rope saw shaft excavation system with high construction efficiency, small investment, low cost, further greatly shortened construction period and good safety.

[0005] The present invention is achieved in that: A rope saw shaft excavation system, in which upper and lower construction branch holes are opened on the horizontal planes of the upper and lower ends of the shaft, the terminals of the upper and lower construction branch holes respectively include the upper and lower end faces of the shaft, and the first and second guide holes 2 are opened at the two ends of the symmetrical diameters of the upper and lower ends of the shaft by using a reverse drilling machine, and upper and lower annular beams 3, 4 and a rope saw machine are respectively installed on the outer sides of the circumferences including the upper and lower ends of the shaft, and upper and lower annular rails are respectively installed on the upper and lower annular beams, and the upper and lower annular rails include upper and side rails, upper and lower annular beams, and the upper and lower annular beams and their upper and lower annular rails are the same, and two forward walking trolleys 7, two lateral walking trolleys 6, the first and second upper rope saw machines 9 and the first and second upper guide pulleys 8 are installed on the upper crossbeam 5, and the upper crossbeam 5 is horizontal. A lower crossbeam 10 spans the lower circular track at the lower end of the shaft, and 2 forward walking trolleys 7, 2 lateral walking trolleys 6, the 1st and 2nd lower rope saws 11 and the 1st and 2nd lower guide pulleys 12 are installed on the lower crossbeam 10. The lateral walking trolleys 6 and the forward walking trolleys 7 are QSC three-in-one motor-driven rigid wheels, which cooperate with the side and upper tracks respectively. The upper and lower rope saws and the upper and lower guide pulleys are fixed to the upper and lower crossbeams with bolts. The 1st and 2nd upper rope saws and the 1st and 2nd lower rope saws have the 1st to 4th driving wheels 13 respectively. The 4 driving wheels 13 of the upper and lower rope saws are located at the four corners of a rectangle. The 1st and 4th driving wheels are located at the upper and lower ends of the 1st guide hole respectively, and the 2nd and 3rd driving wheels are located at the upper and lower ends of the 4th driving wheels 13 respectively. The driving wheels are respectively located at the upper and lower ends of the second guide hole, the first and second upper guide pulleys 8 are located on the upper crossbeam 5, the first and second lower guide pulleys 12 are located on the lower crossbeam 10, and the first to fourth driving wheels and the rope saw chain 14 pass around the first to fourth driving wheels and the upper and lower guide pulleys to form a closed loop.

[0006] A rope saw shaft excavation system, in which upper and lower construction branch holes are opened on the horizontal planes of the upper and lower ends of the shaft, the terminals of the upper and lower construction branch holes respectively include the upper and lower end faces of the shaft, and the first and second guide holes 2 are opened at the two ends of the symmetrical diameters of the upper and lower ends of the shaft by using a reverse drilling machine, and upper and lower annular beams 3 and 4 and a rope saw machine are respectively installed on the outer sides of the circumferences including the upper and lower ends of the shaft, and upper and lower annular rails are respectively installed on the upper and lower annular beams, and the upper and lower annular rails include upper and side rails, and the upper and lower annular beams, the upper and lower annular beams and their upper and lower annular rails are the same and can be interchanged, but the installation positions are different, and two forward walking trolleys 7, two lateral walking trolleys 6, and the first and second upper rope saw machines 9 are installed on the upper crossbeam 5, the upper crossbeam 5 spans the upper annular rail at the upper end of the shaft, and the lower crossbeam 10 spans the shaft A circular track is provided at the lower end of the well, and 2 forward traveling trolleys 7, 2 lateral traveling trolleys 6, and the 1st and 2nd lower rope saw machines 11 are installed on the lower crossbeam 10. The lateral traveling trolleys 6 and the forward traveling trolleys 7 are QSC three-in-one motor-driven rigid wheels, which cooperate with the side and upper tracks respectively. The upper and lower rope saw machines and the upper and lower guide pulleys are fixed to the upper and lower crossbeams with bolts. The 1st and 2nd upper rope saw machines and the 1st and 2nd lower rope saw machines have the 1st to 4th driving wheels 13 respectively. The 1st and 4th driving wheels are respectively located at the upper and lower ends of the 1st guide hole, and the 2nd and 3rd driving wheels are respectively located at the upper and lower ends of the 2nd guide hole. The 1st rope saw chain 14 bypasses the 1st and 4th driving wheels to form the 1st closed loop in the 1st guide hole, and the 2nd rope saw chain bypasses the 2nd and 3rd driving wheels to form the 2nd closed loop in the 2nd guide hole.

[0007] In the shaft excavation system using the rope saw method, two forward traveling trolleys 7 and two lateral traveling trolleys 6 are respectively installed on the upper and lower beams through slewing bearings. The slewing bearings are bearings composed of inner and outer rings and balls. The bases of the forward traveling trolleys 7 and the lateral traveling trolleys 6 are fixedly connected to the outer rings of the slewing bearings, and the front or side surfaces of the upper and lower beams are fixedly connected to the inner rings of the slewing bearings.

[0008] The 1st and 2nd motors 1M1 and 1M2 of the upper and lower rope saw machines are connected to the 1st and 2nd frequency converters 1A1 and 1A2 respectively, and the 1st and 2nd frequency converters 1A1 and 1A2 are connected to the 1st and 3rd power supply phase lines U13, V13, and W13 via the 1st and 2nd reactors 1L1 and the 1st and 3rd fuses 1FU1-3. The 3rd and 4th motors 3M1, 3M2, 3M3, and 3M4 of the 1st and 2nd forward traveling trolleys 7 and the 5th and 6th motors 3M1, 3M2, 3M3, and 3M4 of the 1st and 2nd side traveling trolleys 6 are connected to the 4th and 6th power supply phase lines U15, V15, and W15 via the 1st and 4th fuses 3FU1-4, the 3rd frequency converter 3A1, the 3rd reactor 3L1, and the 4th and 6th fuses 3FU1-3 respectively. The communication adopts wireless communication method. The upper and lower construction branch tunnel equipment need to run synchronously. The wireless transmitting module is installed on the upper construction branch tunnel control cabinet, and the wireless receiving module is installed on the lower construction branch tunnel electrical cabinet. The transmitting module is powered by a battery to prevent power supply failure from affecting equipment control. The control personnel is on the upper plane. After pressing the start button, the upper construction branch tunnel wireless transmitting module sends a signal, and the signal is transmitted to the lower construction branch tunnel wireless receiving module along the opened guide hole. After the lower construction branch tunnel receiving module receives the signal, the first intermediate relay K01 is energized, and the rope saw machine motor starts. When stopping, the operator of the upper construction branch tunnel presses the stop button. After the lower construction branch tunnel wireless receiving module receives the signal, the second intermediate relay K02 is energized, and the rope saw machine motor stops. The walking trolley motor is controlled in the same way.

[0009] The advantages of the present invention are as follows: (1) High construction efficiency. One set of rope saws, two cutting working surfaces, and a 200m deep shaft construction period is about 35-39 days (8 hours of work per day), and the construction efficiency is higher than all existing construction methods. The entire cutting process has fewer steps and can be overtime, which will further greatly shorten the construction period.

[0010] (2) Small investment and low cost. The manufacturing cost of the rope saw is low, and the control system of the equipment is relatively simple, which is much lower than the traditional method and the new TBM method. The rope saw is an existing product. The upper and lower beams and the walking trolley are simple to manufacture and install. During use, no special operators are required to operate it. The requirements for operation and maintenance personnel are low, and the manufacturing, installation and use costs are low.

[0011] (3) The personnel safety redundancy is high. During the operation of the rope saw, all personnel are operating and supervising in a safe area.

[0012] (4) The equipment of the present invention is simple to manufacture, install and debug, and the on-site preparation time is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a construction scene diagram of the present invention.

[0014] Figure 2This is a structural diagram of the present invention.

[0015] Figure 3 for Figure 2 The upper structure diagram of .

[0016] Figure 4 for Figure 2 The lower structure diagram of .

[0017] Figure 5 This is the structural diagram of the slewing support of the walking trolley.

[0018] Figure 6 This is a layout diagram of a rope saw chain according to Embodiment 1 of the present invention.

[0019] Figure 7 This is the feeding direction diagram of the wire saw.

[0020] Figure 8 This is a layout diagram of a rope saw chain according to Embodiment 2 of the present invention.

[0021] Fig. 9 This is the circuit diagram of the rope saw machine.

[0022] Fig.10 This is the circuit diagram of the walking trolley.

[0023] Fig.11 This is the wireless communication circuit diagram between the upper construction branch tunnel and the lower construction branch tunnel. DETAILED DESCRIPTION Example 1

[0024] A rope saw method shaft excavation system, in which upper and lower construction branch holes are opened on the horizontal planes of the upper and lower ends of the shaft, the terminals of the upper and lower construction branch holes respectively include the upper and lower end faces of the shaft, and the first and second guide holes 2 are opened at the two ends of the symmetrical diameters of the upper and lower ends of the shaft by using a reverse drilling machine, and upper and lower annular beams 3 and 4 and a rope saw machine are respectively installed on the outer sides of the circumferences including the upper and lower ends of the shaft, and upper and lower annular rails are respectively installed on the upper and lower annular beams, and the upper and lower annular rails include upper and side rails, and the upper and lower annular beams, the upper and lower annular beams and their upper and lower annular rails are the same and can be interchanged, but the installation positions are different, and 2 forward walking trolleys 7 and 2 side walking trolleys 6 are installed on the upper crossbeam 5, and the first and second upper rope saws are installed on the upper crossbeam 5. Machine 9, the upper crossbeam 5 spans the upper circular track at the upper end of the shaft, the lower crossbeam 10 spans the lower circular track at the lower end of the shaft, and 2 forward walking trolleys 7, 2 lateral walking trolleys 6, and the first and second lower rope saw machines 11 are installed on the lower crossbeam 10. The lateral walking trolleys 6 and the forward walking trolleys 7 are QSC three-in-one motor-driven rigid wheels, which are respectively matched with the side and upper tracks. The upper and lower rope saw machines and the upper and lower guide pulleys are fixed to the upper and lower crossbeams with bolts. The 1st and 2nd upper rope saw machines and the 1st and 2nd lower rope saw machines have the 1st to 4th driving wheels 13 respectively. The 4 driving wheels 13 of the upper and lower rope saw machines are located at the four corners of a rectangle. The 1st and 4th driving wheels are respectively located at the upper and lower ends of the 1st guide hole, and the 2nd and 3rd driving wheels are respectively located at the upper and lower ends of the 1st guide hole. The driving wheels are respectively located at the upper and lower ends of the second guide hole. The first rope saw chain 14 passes around the first and fourth driving wheels to form a first closed loop in the first guide hole. The second rope saw chain passes around the second and third driving wheels to form a second closed loop in the second guide hole.

[0025] Two forward traveling trolleys 7 and two lateral traveling trolleys 6 are respectively installed on the upper and lower cross beams through slewing bearings. The slewing bearings are bearings composed of inner and outer rings and balls. The bases of the forward traveling trolleys 7 and the lateral traveling trolleys 6 are fixedly connected to the outer rings of the slewing bearings, and the front or side surfaces of the upper and lower cross beams are fixedly connected to the inner rings of the slewing bearings.

[0026] The 1st and 2nd motors 1M1 and 1M2 of the upper and lower rope saw machines are connected to the 1st and 2nd frequency converters 1A1 and 1A2 respectively. The 1st and 2nd frequency converters 1A1 and 1A2 are connected to the 1st and 3rd power supply phase lines U13, V13 and W13 via the 1st and 2nd reactors 1L1 and the 1st and 3rd fuses 1FU1-3. The 3rd and 4th motors 3M1, 3M2, 3M3 and 3M4 of the 1st and 2nd forward traveling trolleys 7 and the 5th and 6th motors 3M1, 3M2, 3M3 and 3M4 of the 1st and 2nd side traveling trolleys 6 are connected to the 4th and 6th power supply phase lines U15, V15 and W15 via the 1st and 4th fuses 3FU1-4, the 3rd frequency converter 3A1, the 3rd reactor 3L1 and the 4th and 6th fuses 3FU1-3 respectively. The upper construction branch hole control cabinet and the lower construction branch hole electrical cabinet are connected. Wireless communication is used for communication. The upper and lower construction branch tunnel equipment need to run synchronously. The wireless transmitting module is installed on the control cabinet of the upper construction branch tunnel, and the wireless receiving module is installed on the electrical cabinet of the lower construction branch tunnel. The transmitting module is powered by a battery to prevent power supply failure from affecting equipment control. The control personnel is on the upper plane. After pressing the start button, the upper construction branch tunnel wireless transmitting module sends a signal, and the signal is transmitted to the lower construction branch tunnel wireless receiving module along the opened guide hole. After the lower construction branch tunnel receiving module receives the signal, the first intermediate relay K01 is energized, and the rope saw machine motor starts. When stopping, the operator of the upper construction branch tunnel presses the stop button. After the lower construction branch tunnel wireless receiving module receives the signal, the second intermediate relay K02 is energized, and the rope saw machine motor stops. The walking trolley motor is controlled in the same way.

[0027] The specific steps are as follows: 1. First, use a raise borer or a directional drill to drill two guide holes around the shaft. like Figure 1 As shown, after the construction branch tunnel of the vertical shaft (open-air or underground) is opened, a 295mm Ø guide hole 2 is drilled along the shaft wall by a raise boring machine 1. The guide hole 2 uses a guide instrument to control the hole direction and correct the deviation in time.

[0028] 2. Install the circular track beam and rope saw machine.

[0029] (1) After the guide hole 2 is drilled, the raise boring machine 1 is removed and the upper annular beam 3 and the track are installed. Two tracks are arranged on the upper annular beam 3, one on the upper top surface of the upper annular beam 3 and the other on the side of the upper annular beam 3. The upper annular beam 3 and the track are manufactured in sections, and the sections are connected as a whole by bolts to ensure that the coplanarity and misalignment of the track top surface are within the permitted range.

[0030] (2) At the same time, the lower plane (construction branch hole) lower ring beam 4 and track must be installed. The area where the lower ring beam 4 is installed needs to be expanded to form a Figure 2 The outline shown in the solid line ensures that there is enough space for the lower ring beam and the rope saw to be installed. The lower ring beam 4 and its track are identical with the upper ring beam 3 and can be interchanged, except that the installation positions are different.

[0031] (3) Install the upper rope saw 9, upper crossbeam 5 and its components. After the upper and lower ring beams and their tracks are installed, install the upper and lower rope saws. Figure 3 , 4 As shown, the lower plane rope saw can be installed after the upper plane rope saw is installed, or they can be installed at the same time. It is necessary to measure the verticality and colinearity of the upper and lower rope saw machine drive wheels in time.

[0032] The upper crossbeam 5 is equipped with 2 forward travel trolleys 7, 2 lateral travel trolleys 6, 2 upper rope saws 9 and 2 guide pulleys 8. The upper crossbeam 5 spans the shaft. After the rock mass of the shaft is removed, the upper crossbeam 5 must have sufficient rigidity to ensure that the equipment installed on it does not fall into the shaft. The forward travel trolley 7 and the lateral travel trolley 6 are QSC three-in-one motor driven rigid wheels and travel on P24 tracks. The upper rope saw 9 and the guide pulley 8 are bolted to the upper crossbeam. The upper rope saw is produced by a professional manufacturer and the power is not less than 75kW.

[0033] Install the lower rope saw machine 11, the lower crossbeam 10 and its components. The lower rope saw machine and the lower crossbeam and its assembly installation method are the same as the upper crossbeam, except that the guide pulleys are different.

[0034] The wire saw chain 14 and the upper and lower wire saw machines can be divided into concrete cutting wire saw, granite and mining wire saw, granite rough material shaping wire saw, granite special-shaped processing wire saw, marble mining wire saw, marble rough material shaping wire saw, marble special-shaped processing wire saw, etc. according to different uses. Therefore, the wire saw chain 14 can be reasonably selected according to geological data. The lower guide pulley 12 has a different structural type and installation method from the guide pulley 8 of the upper wire saw machine 9, and is arranged according to the needs of saw rope winding.

[0035] The lower ring beam 4 is connected to the ground with pre-buried anchor bolts. At the same time, a winch is arranged at a location where the construction branch hole does not hinder traffic. When cutting close to the theoretical fracture position of the shaft rock mass, the anchor bolts are cut off with flames, and the winch is started to pull the lower ring beam away from the vertical slag falling position to prevent the slag from damaging the equipment. A rock drill is used to drill and blast at the top of the shaft to release the rock connection. Under the action of its own weight, part of the rock mass of the shaft falls to the construction branch hole by itself, and then the loader and dump truck cooperate to complete the slag removal.

[0036] In order to adapt to the circular track, the forward traveling trolley 7 and the lateral traveling trolley 6 need to be installed with a slewing bearing at the connection with the cross beam.

[0037] How it works 1. Use a rope saw to cut the rock mass and cut along the perimeter of the shaft. 竖井圆周内岩体 >∑F 岩体剪力Under the action of gravity, the rock mass in the shaft is sheared and separated from the surrounding rock mass. The rock mass in the shaft falls to the bottom of the construction branch tunnel, forming slag, which is loaded by a loader and transported to the slag yard by a dump truck, completing the excavation of the rock mass in the shaft and penetrating the shaft.

[0038] 2. Wire saw installation and layout The rope saw is designed based on the principle of rope sawing wood cutting. It is a kind of saw that can cut brittle and hard materials. The rope saw machine driving wheel 13, upper guide wheel 8, lower guide wheel 12, rope saw chain 14 (made of diamond material) are arranged as follows: Figure 6 As shown: On the circumference of the shaft, two Ф295mm guide holes 2 are drilled along any diameter, and the rope saw chain 14 passes through the two guide holes 2 to connect the four rope saw machines. The rope saw chain 14 also forms a ring. There are a total of 4 sets of guide wheels, which cooperate to complete the transition and direction change of the rope saw chain 14 in the entire circular motion direction, ensuring that the wrap angle of the rope saw machine drive wheel is not less than the technical requirements.

[0039] Wire saw chain Figure 6 run, Figure 6 In the left guide hole (along the water flow direction), the chain cuts the rock downward, while in the right guide hole, the chain cuts the rock upward, forming a loop.

[0040] 3. Wire saw cutting feed like Figure 5 As shown, when the rope saw is cutting, the walking trolley is started, the upper crossbeam 5 will rotate counterclockwise as shown in the figure, with a speed between 3-4.5m / min, and the rope saw chain 14 runs at a speed of about 20m / s. The rope saw of the lower crossbeam 10 also runs synchronously, thus ensuring the verticality and straightness of the chain and the cutting efficiency.

[0041] Wire saw control system The wire saw uses wireless communication to control the operation of the upper and lower plane motors. The main control cabinet is installed on the upper plane. The four wire saws are powered by inverters, the lower plane trolley is powered by an inverter, and the lower plane wire saw is powered by an inverter. The upper plane power supply and the lower plane equipment power supply can be supplied separately or centrally.

[0042] Fig. 9Among them, U13, V13, and W13 are three power supply phase lines, 1FU13 is a fuse, 1L1 is a reactor, 1A1 and 1A2 are frequency converters, 1M1 and 1M2 are rope saw motors, 1G1 and 1G2 are speed encoders, 1Y-2 is a brake, 1KM1, 1KM2, and 1KM3 are AC contactors, and QF21, QF22, and QF23 are air switches. The frequency converter is started and speed controlled by PLC. The upper limit frequency of the frequency converter is 50, the lower limit frequency is 0, the acceleration and deceleration time are both 3 seconds, and the remote control function is set to 1. When operating, close QF, turn on forward rotation, press the start button, release the start button after starting, and the motor runs in a self-locking state. When stopping, press the stop button. Because the cutting surface of the rope saw is different from the non-cutting surface, the motor is not set to reverse control.

[0043] Fig.10 U15, V15, and W15 are three power supply phase lines, 3FU1-3 is a fuse, 3L1 is a reactor, 2A1 is a frequency converter, 3M1, 3M2, 3M3, and 3M4 are trolley motors, equipped with speed encoders, which are not shown in the figure due to the size of the figure. 3Y1-2 is a brake, 3KM1 and 3KM2 are AC contactors, and QF41 and QF42 are air switches. The frequency converter is started and speed controlled by PLC. The upper limit frequency of the frequency converter is 50, the lower limit frequency is 0, the acceleration and deceleration time are both 3 seconds, and the remote control function is set to 1. During operation, close QF, turn on forward rotation, press the start button, release the start button after starting, and the motor runs in a self-locking state. When stopping, press the stop button. Because the track is circular, no reverse control is equipped.

[0044] The communication between the control cabinet and the electrical cabinet adopts wireless communication, and the upper and lower construction branch tunnel equipment must operate synchronously. Fig.11 As shown, a wireless transmitter module is installed on the control cabinet of the upper branch tunnel, and a wireless receiver module is installed on the electrical cabinet of the lower branch tunnel. The transmitter module is powered by a battery to prevent power supply failure from affecting equipment control. When the control personnel press the start button in the upper branch tunnel, the wireless transmitter module of the upper branch tunnel sends a signal, and the signal is transmitted to the wireless receiver module of the lower branch tunnel along the opened guide hole. After the lower branch tunnel receiver module receives the signal, the intermediate relay K01 is energized, and the rope saw machine starts. When stopping, the operator of the upper branch tunnel presses the stop button, and after the wireless receiver module of the lower branch tunnel receives the signal, the intermediate relay K02 is energized, and the rope saw machine stops. The motor control of the walking trolley is the same. Example 2

[0045] The upper and lower construction branch holes are opened on the horizontal planes of the upper and lower ends of the shaft. The terminals of the upper and lower construction branch holes include the upper and lower end faces of the shaft respectively. The first and second guide holes 2 are opened at the two ends of the symmetrical diameters of the upper and lower ends of the shaft by using a reverse drilling machine. The upper and lower annular beams 3 and 4 and a rope saw are respectively installed on the outer sides of the circumferences including the upper and lower ends of the shaft. The upper and lower annular rails are respectively installed on the upper and lower annular beams. The upper and lower annular beams and their upper and lower annular rails are the same and can be interchanged, but the installation positions are different. Two forward walking trolleys 7 and two lateral walking trolleys 6 are installed on the upper crossbeam 5. The first and second upper rope saws 9, the upper crossbeam 5 spans the upper circular track at the upper end of the shaft, the lower crossbeam 10 spans the lower circular track at the lower end of the shaft, 2 forward walking trolleys 7, 2 lateral walking trolleys 6, the 1st and 2nd lower rope saw machines 11 are installed on the lower crossbeam 10, the lateral walking trolleys 6 and the forward walking trolleys 7 are QSC three-in-one motor driven rigid wheels, which travel on the upper and lower circular tracks, the upper and lower rope saw machines and the upper and lower guide pulleys are fixed to the upper and lower crossbeams with bolts, the 1st and 2nd upper rope saw machines and the 1st and 2nd lower rope saw machines have the 1st-4th driving wheels 13 respectively, the 1st and 4th driving wheels are respectively located at the upper and lower ends of the 1st guide hole, the 2nd and 3rd driving wheels are respectively located at the upper and lower ends of the 2nd guide hole, the 1st rope saw chain 14 bypasses the 1st and 4th driving wheels to form the 1st closed loop, and the 2nd rope saw chain bypasses the 2nd and 3rd driving wheels to form the 2nd closed loop.

[0046] Two forward traveling trolleys 7 and two lateral traveling trolleys 6 are respectively installed on the upper and lower cross beams through slewing bearings. The slewing bearings are bearings composed of inner and outer rings and balls. The bases of the forward traveling trolleys 7 and the lateral traveling trolleys 6 are fixedly connected to the outer rings of the slewing bearings, and the front or side surfaces of the upper and lower cross beams are fixedly connected to the inner rings of the slewing bearings.

[0047] The 1st and 2nd motors 1M1 and 1M2 of the upper and lower rope saw machines are connected to the 1st and 2nd frequency converters 1A1 and 1A2 respectively. The 1st and 2nd frequency converters 1A1 and 1A2 are connected to the 1st and 3rd power supply phase lines U13, V13 and W13 via the 1st and 2nd reactors 1L1 and the 1st and 3rd fuses 1FU1-3. The 3rd and 4th motors 3M1, 3M2, 3M3 and 3M4 of the 1st and 2nd forward traveling trolleys 7 and the 5th and 6th motors 3M1, 3M2, 3M3 and 3M4 of the 1st and 2nd side traveling trolleys 6 are connected to the 4th and 6th power supply phase lines U15, V15 and W15 via the 1st and 4th fuses 3FU1-4, the 3rd frequency converter 3A1, the 3rd reactor 3L1 and the 4th and 6th fuses 3FU1-3 respectively. The upper construction branch hole control cabinet and the lower construction branch hole electrical cabinet are connected. Wireless communication is used for communication. The upper and lower construction branch tunnel equipment need to run synchronously. The wireless transmitting module is installed on the control cabinet of the upper construction branch tunnel, and the wireless receiving module is installed on the electrical cabinet of the lower construction branch tunnel. The transmitting module is powered by a battery to prevent power supply failure from affecting equipment control. The control personnel is on the upper plane. After pressing the start button, the upper construction branch tunnel wireless transmitting module sends a signal, and the signal is transmitted to the lower construction branch tunnel wireless receiving module along the opened guide hole. After the lower construction branch tunnel receiving module receives the signal, the first intermediate relay K01 is energized, and the rope saw machine motor starts. When stopping, the operator of the upper construction branch tunnel presses the stop button. After the lower construction branch tunnel wireless receiving module receives the signal, the second intermediate relay K02 is energized, and the rope saw machine motor stops. The walking trolley motor is controlled in the same way.

[0048] like Figure 8 As shown, the rope winding method is changed, the guide pulley is removed, and only the upper and lower rope saws in the vertical direction are connected into a ring, with a total of 2 cutting loops. This method should minimize the diameter of the rope saw drive wheel to reduce the distance between the cutting edge and the rope return edge of the rope saw chain to meet the requirements of different shaft diameters and avoid friction between the rope return edge and the rock mass.

[0049] The rest is the same as Example 1.

Claims

1. A rope saw shaft excavation system, characterized in that: Upper and lower construction branch holes are opened on the horizontal planes of the upper and lower ends of the shaft, and the terminals of the upper and lower construction branch holes include the upper and lower end surfaces of the shaft respectively. The first and second guide holes (2) are opened at the two ends of the symmetrical diameters of the upper and lower ends of the shaft by using a reverse drilling machine. Upper and lower annular beams (3, 4) and a rope saw are respectively installed on the outer sides of the circumferences including the upper and lower ends of the shaft. Upper and lower annular rails are respectively installed on the upper and lower annular beams. The upper and lower annular rails include upper and side rails, upper and lower annular beams, and the upper and lower annular beams and their upper and lower annular rails are the same. The first and second forward traveling trolleys (7), the first and second lateral traveling trolleys (6), the first and second upper rope saws (9) and the first and second upper guide pulleys (8) are installed on the upper crossbeam (5). The upper crossbeam (5) spans The upper circular track at the upper end of the shaft, the lower crossbeam (10) spans the lower circular track at the lower end of the shaft, the third and fourth forward walking trolleys, the third and fourth side walking trolleys, the first and second lower rope saw machines (11) and the first and second lower guide pulleys (12) are installed on the lower crossbeam (10), the side walking trolley and the forward walking trolley are QSC three-in-one motor driven rigid wheels, respectively matched with the side and upper tracks, the upper and lower rope saw machines and the upper and lower guide pulleys are fixed to the upper and lower crossbeams by bolts, the first and second upper rope saw machines and the first and second lower rope saw machines respectively have the first to fourth driving wheels (13), the four driving wheels (13) of the upper and lower rope saw machines are located at the four corners of a rectangle, the first and fourth driving wheels are respectively located at the upper and lower ends of the first guide hole, the second and third driving wheels are respectively located at the upper and lower ends of the second guide hole, and the third and fourth driving wheels are respectively located at the upper and lower ends of the second guide hole. The driving wheels are respectively located at the upper and lower ends of the second guide hole, the first and second upper guide pulleys (8) are located on the upper crossbeam (5), the first and second lower guide pulleys (12) are located on the lower crossbeam 10, and the first to fourth driving wheels and the rope saw chain 14 pass around the first to fourth driving wheels and the upper and lower guide pulleys to form a closed loop.

2. A rope saw shaft excavation system, characterized in that: Upper and lower construction branch holes are opened on the horizontal planes of the upper and lower ends of the shaft, and the terminals of the upper and lower construction branch holes include the upper and lower end surfaces of the shaft respectively. The first and second guide holes (2) are opened at the two ends of the symmetrical diameters of the upper and lower ends of the shaft by using a reverse drilling machine. Upper and lower annular beams (3, 4) and a rope saw are respectively installed on the outer sides of the circumferences including the upper and lower ends of the shaft. Upper and lower annular rails are respectively installed on the upper and lower annular beams. The upper and lower annular rails include upper and side rails, upper and lower annular beams, and the upper and lower annular beams and their upper and lower annular rails are the same. The first and second forward traveling trolleys (7), the first and second lateral traveling trolleys (6), the first and second upper rope saws (9), and the upper cross beam (5) are installed on the upper cross beam (5). ) spans the upper circular track at the upper end of the shaft, and the lower crossbeam (10) spans the lower circular track at the lower end of the shaft. The 3rd and 4th forward walking trolleys, the 3rd and 4th side walking trolleys, and the 1st and 2nd lower rope saw machines (11 and) are installed on the lower crossbeam (10). The side walking trolley and the forward walking trolley are QSC three-in-one motor-driven rigid wheels, which are respectively matched with the side and upper tracks. The upper and lower rope saw machines are fixed to the upper and lower crossbeams with bolts. The 1st and 2nd upper rope saw machines and the 1st and 2nd lower rope saw machines have 1st to 4th driving wheels (13), respectively. The 4 driving wheels (13) of the upper and lower rope saw machines are located at the four corners of a rectangle. The 1st and 4th driving wheels are respectively located at the upper and lower ends of the 1st guide hole, and the 2nd and 3rd driving wheels are respectively located at the upper and lower ends of the 2nd and 3rd guide holes. The driving wheels are respectively located at the upper and lower ends of the second guide hole, the first rope saw chain (14) passes around the first and fourth driving wheels to form a first closed loop in the first guide hole, and the second rope saw chain passes around the second and third driving wheels to form a second closed loop in the second guide hole.

3. The wire saw shaft excavation system according to claim 1 or 2, characterized in that: The first and second forward traveling trolleys (7) and the first and second lateral traveling trolleys (6) are respectively mounted on the upper and lower cross beams through slewing bearings. The slewing bearings are bearings composed of inner and outer rings and balls. The bases of the forward traveling trolleys and the lateral traveling trolleys are fixedly connected to the outer rings of the slewing bearings. The front or side surfaces of the upper and lower cross beams are fixedly connected to the inner rings of the slewing bearings.

4. The wire saw shaft excavation system according to claim 1 or 2, characterized in that: The 1st and 2nd motors 1M1 and 1M2 of the upper and lower rope saw machines are connected to the 1st and 2nd frequency converters 1A1 and 1A2 respectively, and the 1st and 2nd frequency converters 1A1 and 1A2 are connected to the 1st and 3rd power supply phase lines U13, V13, and W13 via the 1st and 2nd reactors 1L1 and the 1st and 3rd fuses 1FU1-3. The 3rd and 4th motors 3M1, 3M2, 3M3, and 3M4 of the 1st and 2nd forward traveling trolleys 7 and the 5th and 6th motors 3M1, 3M2, 3M3, and 3M4 of the 1st and 2nd side traveling trolleys 6 are connected to the 4th and 6th power supply phase lines U15, V15, and W15 via the 1st and 4th fuses 3FU1-4, the 3rd frequency converter 3A1, the 3rd reactor 3L1, and the 4th and 6th fuses 3FU1-3 respectively. The communication adopts wireless communication method. The upper and lower construction branch tunnel equipment need to run synchronously. The wireless transmitting module is installed on the upper construction branch tunnel control cabinet, and the wireless receiving module is installed on the lower construction branch tunnel electrical cabinet. The transmitting module is powered by a battery to prevent power supply failure from affecting equipment control. The control personnel is on the upper plane. After pressing the start button, the upper construction branch tunnel wireless transmitting module sends a signal, and the signal is transmitted to the lower construction branch tunnel wireless receiving module along the opened guide hole. After the lower construction branch tunnel receiving module receives the signal, the first intermediate relay K01 is energized, and the rope saw machine motor starts. When stopping, the operator of the upper construction branch tunnel presses the stop button. After the lower construction branch tunnel wireless receiving module receives the signal, the second intermediate relay K02 is energized, and the rope saw machine motor stops. The walking trolley motor is controlled in the same way.

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