A simulation experimental device for mud and water slag discharge of full-section vertical shaft boring machine

Abstract

The present invention provides a full-section vertical shaft boring machine mud and water slag discharge simulation experimental device, including an experimental water tank, a liquid inlet component and a liquid return component, the liquid inlet component includes a water tank and a liquid inlet pipeline, the water tank is connected to the experimental water tank through the liquid inlet pipeline, a liquid inlet pump is arranged on the liquid inlet pipeline, the liquid return component includes a liquid return pipeline, a liquid return pump is arranged on the liquid return pipeline, the connection between the liquid inlet pipeline and the experimental water tank is branched, the flow rate is controlled by a flow control unit at the branch, and the flushing jet angle, height and direction sprayed to the experimental water tank are adjusted by a flushing adjustment unit. The present invention can simulate the slag discharge process under the action of the flushing jet of the full-section vertical shaft, and study the influence of various design parameters on the flushing and slag discharge performance. It has the advantages of simple structure, easy operation, reliable experiment, etc., and can better guide the design of the flushing and slag discharge system of the vertical shaft boring machine.

Description

Technical Field

[0001] The invention relates to the technical field of tunneling experiments, and in particular to a muddy and slag-discharging simulation experiment device for a full-section vertical shaft tunneling machine. Background Art

[0002] The drilling of shaft boring machines is one of the main development directions of mechanized drilling in recent years. The excavation diameter of the shaft boring machine is much larger than the diameter of the slurry discharge pipe. The excavated slag is accumulated in the excavation bin during the construction process, and the slag needs to be discharged efficiently. The mud and water slag discharge system of the full-section shaft boring machine is mainly composed of a flushing pipeline and a slurry discharge pipe. The flushing jet from the flushing pipeline flushes the slag to the suction area of ​​the slurry discharge pipe, and then the mud carries the slag and is discharged from the slurry discharge pipe. There are very few studies on the mud and water slag discharge system of the full-section shaft boring machine in China. In actual construction, the problem of insufficient slag discharge capacity is faced, which seriously restricts the construction efficiency. In view of the problem of low slag discharge efficiency, the cost of optimizing the actual full-section shaft boring machine mud and water slag discharge system based only on engineering experience is high, the cycle is long, and it is difficult to effectively solve the problem. Building a full-section shaft boring machine mud and water slag discharge simulation experimental device to simulate the slag discharge process is helpful to guide the design of the shaft boring machine flushing slag discharge system. Summary of the invention

[0003] The purpose of the present invention is to provide a mud and water slag discharge simulation experimental device for a full-section vertical shaft boring machine in view of the deficiencies in the above-mentioned background technology, which can simulate the slag discharge process under different scouring and slag discharge structures and study the influence of various design parameters on the scouring and slag discharge performance.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a full-section vertical shaft boring machine mud and water slag discharge simulation experimental device, including an experimental water tank, a liquid inlet component and a liquid return component, the liquid inlet component includes a water tank and a liquid inlet pipeline, the water tank is connected to the experimental water tank through the liquid inlet pipeline, a liquid inlet pump is arranged on the liquid inlet pipeline, the liquid return component includes a liquid return pipeline, a liquid return pump is arranged on the liquid return pipeline, the liquid inlet pipeline and the experimental water tank are connected at the connection point. The flow rate is controlled by a flow control part at the branch point, and the flushing jet angle, height and direction sprayed to the experimental water tank are adjusted by a flushing adjustment part.

[0005] Furthermore, the liquid inlet pipeline includes a main liquid inlet pipe and a branch liquid inlet pipe, the first end of the main liquid inlet pipe is connected to the water tank, the second end of the main liquid inlet pipe is connected to the first end of each branch liquid inlet pipe through a diverter, and the liquid inlet pump is connected to the main liquid inlet pipe.

[0006] Furthermore, the flow control unit includes valves and flow sensors arranged on the branch liquid inlet pipes, which are used to control the flow of each branch liquid inlet pipe.

[0007] Furthermore, the second ends of the branch liquid inlet pipes are respectively connected to the first ends of a liquid inlet hose, the second ends of the liquid inlet hoses are connected to the first end of the clamping tube, and the clamping tube is connected to the flushing regulating part.

[0008] Furthermore, the flushing adjustment part includes a nozzle base connected to the second end of the clamping tube, the nozzle base is provided with a universal ball, the universal ball is connected to the nozzle, and the angle of the flushing jet is adjusted by the angle of the universal ball.

[0009] Furthermore, the flushing adjustment part includes a supporting frame, a first fixing member and a second fixing member, the supporting frame is erected above the experimental water tank, a first slide groove is provided on the supporting frame, the first fixing member and the first slide groove are connected by bolts, and the longitudinal position can be adjusted, a second slide groove is provided on the first fixing member, the second fixing member and the second slide groove are connected by bolts, and the lateral position can be adjusted, and the second fixing member is connected to the clamping tube through a rotating sleeve, so that the clamping tube can adjust the height position and rotate 360 ​​degrees.

[0010] Furthermore, the liquid return pipeline includes a liquid return main pipe and a liquid return hose, the first end of the liquid return main pipe is detachably mounted with a suction head, the suction head has different forms for replacement and adjustment, the second end of the liquid return main pipe is connected to the first end of the liquid return hose, the second end of the liquid return hose is connected to the water tank, and the liquid return pump is arranged on the liquid return hose.

[0011] Furthermore, the liquid return main pipe is arranged vertically and is made of transparent organic glass, and the liquid return main pipe or the liquid return hose is provided with a pressure sensor and a flow sensor.

[0012] Furthermore, a pressure sensor is arranged in the experimental water tank, a water outlet and a screen are provided at the bottom of the experimental water tank, and a valve is provided at the water outlet to quickly discharge the water in the experimental water tank through the water outlet, so as to facilitate the observation of the distribution characteristics of the debris in the experimental water tank under the scouring action.

[0013] Furthermore, a solid-liquid separation structure is provided in the water tank, and the solid-liquid separation structure divides the water tank into a clean water area and a slurry area, the liquid inlet pipeline is connected to the clean water area, and the liquid return pipeline is connected to the slurry area.

[0014] The above scheme of the present invention has the following beneficial effects:

[0015] The muddy water slag discharge simulation experimental device for a full-section shaft boring machine provided by the present invention can simulate the slag discharge process under the action of the flushing jet of the full-section shaft, and study the influence of various design parameters on the flushing and slag discharge performance. It has the advantages of simple structure, easy operation, reliable experiment, etc., and can better guide the design of the flushing and slag discharge system of the shaft boring machine;

[0016] In the present invention, the liquid return pipeline is directly connected to the water tank to realize the recycling of liquid. The water tank contains a solid-liquid separation structure for separating soil residues, and the amount of residue discharge under different flushing conditions is counted. The experimental water tank has a fast drainage structure to facilitate the observation of the distribution characteristics of the residue under the flushing action.

[0017] The jet flow rate and slurry discharge flow rate of the present invention can be adjusted by corresponding components, the jet medium and slag types can be replaced, the number and arrangement position of the flushing jets can be adjusted, and the slag discharge process under different flushing conditions can be simulated;

[0018] The experimental water tank and the liquid return pipe of the present invention are both transparently arranged to facilitate observation of the distribution characteristics of the slag in the experimental water tank under the scouring action, as well as the movement of the slag in the pipe during the hydraulic lifting process. The suction head can be replaced to study the slag discharge effect under different forms;

[0019] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional axonometric diagram of the overall structure of the present invention;

[0021] Figure 2 It is a front view of the overall structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the nozzle base installation structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the water tank structure of the present invention.

[0024] [Description of Reference Numerals]

[0025] 1- experimental water tank; 2- water tank; 3- liquid inlet pump; 4- liquid return pump; 5- main liquid inlet pipe; 6- branch liquid inlet pipe; 7- primary adapter; 8- water inlet hose; 9- secondary adapter; 10- clamping tube; 11- nozzle base; 12- nozzle; 13- valve; 14- flow sensor; 15- pressure cap; 16- universal ball; 17- support frame; 18- first fixing piece; 19- second fixing piece; 20- liquid return main pipe; 21- liquid return hose; 22- suction head; 23- elbow adapter; 24- pressure sensor; 25- screen; 26- flange; 27- diverter. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a locking connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a full-section vertical shaft boring machine mud and water slag discharge simulation experimental device, including an experimental water tank 1, a liquid inlet component and a liquid return component. Among them, the liquid inlet component includes a water tank 2 and a liquid inlet pipeline, the water tank 2 is connected to the experimental water tank 1 through the liquid inlet pipeline, and a liquid inlet pump 3 is arranged on the liquid inlet pipeline. The liquid return component includes a liquid return pipeline, preferably the experimental water tank 1 is connected to the water tank 2 through the liquid return pipeline, and a liquid return pump 4 is arranged on the liquid return pipeline. Therefore, the water in the water tank 2 can be pumped into the experimental water tank 1 along the liquid inlet pipeline by the liquid inlet pump 3 to simulate the flushing jet effect. The liquid return pipeline is directly connected to the water tank 2, and the slag discharge process is simulated under the action of the liquid return pump, and the recycling of the liquid is realized.

[0030] In this embodiment, the connection between the liquid inlet pipeline and the experimental water tank 1 is branched so that the flushing jet forms multiple beams, which is closer to the actual construction site. The flow rate is controlled by the flow control unit at the branch, and the flushing adjustment unit is used to adjust the flushing jet angle, height and direction sprayed to the experimental water tank 1, so as to conveniently control different experimental conditions, parameters, etc.

[0031] In this embodiment, the liquid inlet pump 3 is provided with a speed regulating part for adjusting the pump pressure flow. The liquid inlet pipeline includes a main liquid inlet pipe 5 and a branch liquid inlet pipe 6. The main liquid inlet pipe 5 is connected to each branch liquid inlet pipe 6 through a flow divider 27. The second end of the branch liquid inlet pipe 6 is connected to a primary adapter 7, which is connected to the first end of a water inlet hose 8 through the primary adapter 7. The second end of the water inlet hose 8 is connected to the first end of a clamping tube 10 through a secondary adapter 9. The second end of the clamping tube 10 is connected to the first end of a nozzle base 11. The nozzle base 11 is provided with a nozzle 12 to form a flushing jet.

[0032] Among them, the flow control part includes a valve 13 and a flow sensor 14 arranged at the branch liquid inlet pipe 6, which is used to control the flow of each branch liquid inlet pipe 6, and can control each branch liquid inlet pipe 6 to deliver at a different flow rate, thereby controlling different flushing jet effects.

[0033] At the same time Figure 3 As shown, in this embodiment, the second end of the nozzle base 11 is connected to the pressure cap 15, and a universal ball 16 is arranged between the two. The universal ball 16 is connected to the nozzle 12, and the angle of the flushing jet is adjusted by the angle change of the universal ball 16. Specifically, a channel is opened in the middle of the nozzle base 11 and the universal ball 16, and the nozzle 12 is connected to one end of the channel of the universal ball 16. The universal ball 16 can be made of elastic sealing materials such as rubber. After the pressure cap 15 is fixed to the nozzle base 11, the universal ball 16 is clamped, so that the other end of the channel of the universal ball 16 is connected to the channel of the nozzle base 11, and the other parts rely on rubber to form a seal.

[0034] In this embodiment, the clamping tube 10 is connected to the flushing adjustment part, and the flushing adjustment part includes a support frame 17, a first fixing member 18 and a second fixing member 19. Among them, the support frame 17 is erected above the experimental water tank 1, and a first slide groove is provided on the support frame 17. The first fixing member 18 is connected to the first slide groove by bolts, and the longitudinal position can be adjusted and locked. The first fixing member 18 is provided with a second slide groove, and the second fixing member 19 is connected to the second slide groove by bolts, and the lateral position can be adjusted and locked. The second fixing member 19 is connected to the clamping tube 10 through a rotating sleeve, and the sleeve is also made of rubber material, so that the clamping tube 10 can be adjusted relative to the sleeve and then elastically clamped, so as to adjust the height position and 360-degree rotation of the clamping tube 10. Therefore, relying on the flushing adjustment part, the spatial position and rotation angle of the clamping tube 10 can be conveniently adjusted, so as to control different flushing jet positions, directions and angles.

[0035] In addition, the influence of different numbers of flushing jets on the slag removal performance can be studied by changing the number of fixtures and pipelines, and various actual working conditions can be further tested.

[0036] In this embodiment, the liquid return pipeline includes a liquid return main pipe 20 and a liquid return hose 21. The first end of the liquid return main pipe 20 is detachably mounted with a suction head 22, and the suction head 22 has different forms for replacement and adjustment. The second end of the liquid return main pipe 20 is connected to the first end of the liquid return hose 21 through an elbow adapter 23, and the second end of the liquid return hose 21 is connected to the water tank 2, and the liquid return pump 4 is arranged on the liquid return hose 21.

[0037] The liquid return main pipe 20 or the liquid return hose 21 is provided with a pressure sensor 24 and a flow sensor 14 to control the slag discharge pressure and flow.

[0038] Preferably, in this embodiment, the liquid return pipe 20 is arranged vertically and made of transparent organic glass to facilitate observation of the movement of slag in the vertical pipe. The liquid return pipe 20 is also connected to the second fixing member 19 and can also adjust the height position to control the position of the suction head 22 to simulate the process of slag discharge at different positions.

[0039] In this embodiment, the experimental water tank 1 is a vertically placed cylinder to simulate a full-section shaft construction site. A pressure sensor 24 is also arranged in the experimental water tank 1 to detect the internal pressure. In addition, a water outlet and a screen 25 are provided at the bottom of the experimental water tank 1, and a valve 13 is provided at the water outlet to quickly discharge the water in the experimental water tank 1 through the water outlet, so as to facilitate the observation of the distribution characteristics of the slag in the experimental water tank 1 under the scouring effect.

[0040] At the same time Figure 4As shown, as a preference, a solid-liquid separation structure is provided in the water tank 2 in this embodiment, and the solid-liquid separation structure separates the water tank 2 into a clean water area and a slurry area. Among them, the liquid inlet pipeline is connected to the clean water area, and the liquid return pipeline is connected to the slurry area. As a preference, the solid-liquid separation structure also adopts the form of a screen 25, which can filter and recycle water on the one hand, and retain the filtered slag soil at the same time, which is used to count the slag discharge amount under different flushing conditions, and is easy to operate.

[0041] As a preferred embodiment, the pipe fittings and the adapter, the nozzle base 11, the suction head 22, etc. are all connected by threads, the nozzle base 11 and the pressure cap 15, the universal ball 16 and the nozzle 12, etc. are also connected by threads, which is convenient for installation and disassembly. The inlet pump 3, the outlet pump 4 and the corresponding pipelines are connected by flanges 26.

[0042] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A full-section vertical shaft boring machine mud and water slag simulation experimental device, It is characterized in that It includes an experimental water tank, a liquid inlet component and a liquid return component, wherein the liquid inlet component includes a water tank and a liquid inlet pipeline, the water tank is connected to the experimental water tank through the liquid inlet pipeline, a liquid inlet pump is arranged on the liquid inlet pipeline, the liquid return component includes a liquid return pipeline, a liquid return pump is arranged on the liquid return pipeline, a branch is formed at the connection between the liquid inlet pipeline and the experimental water tank, a flow control unit is used to control the flow at the branch, and a flushing adjustment unit is used to adjust the flushing jet angle, height and direction sprayed to the experimental water tank; The liquid return pipeline includes a liquid return main pipe and a liquid return hose, the first end of the liquid return main pipe is detachably mounted with a suction head, and the suction head has different forms for replacement and adjustment, the second end of the liquid return main pipe is connected to the first end of the liquid return hose, the second end of the liquid return hose is connected to the water tank, and the liquid return pump is arranged on the liquid return hose; The liquid return main pipe is arranged vertically and is made of transparent organic glass to observe the movement of slag in the vertical pipe. The liquid return main pipe can also adjust the height position to control the position of the suction head and simulate the slag discharge process at different positions; the liquid return main pipe or the liquid return hose is provided with a pressure sensor and a flow sensor.

2. A muddy and slag-discharging simulation experimental device for a full-section vertical shaft boring machine according to claim 1, It is characterized in that The liquid inlet pipeline includes a main liquid inlet pipe and a branch liquid inlet pipe. The first end of the main liquid inlet pipe is connected to the water tank, and the second end of the main liquid inlet pipe is connected to the first end of each branch liquid inlet pipe through a diverter. The liquid inlet pump is connected to the main liquid inlet pipe.

3. A muddy and slag-discharging simulation experimental device for a full-face vertical shaft boring machine according to claim 2, It is characterized in that The flow control unit includes valves and flow sensors arranged on the branch liquid inlet pipes, and is used to control the flow of each branch liquid inlet pipe.

4. A muddy and slag-discharging simulation experimental device for a full-section vertical shaft boring machine according to claim 2, It is characterized in that The second ends of the branch liquid inlet pipes are respectively connected to the first ends of a liquid inlet hose, the second ends of the liquid inlet hoses are connected to the first end of the clamping tube, and the clamping tube is connected to the flushing regulating part.

5. A muddy and slag-discharging simulation experimental device for a full-face shaft boring machine according to claim 4, It is characterized in that The flushing adjustment part includes a nozzle base connected to the second end of the clamping tube, and the nozzle base is provided with a universal ball, and the universal ball is connected to the nozzle, and the angle of the flushing jet is adjusted by the angle of the universal ball.

6. A full-section vertical shaft boring machine muddy water slag simulation experimental device according to claim 4, It is characterized in that The flushing adjustment part includes a supporting frame, a first fixing member and a second fixing member. The supporting frame is erected above the experimental water tank. A first slide groove is provided on the supporting frame. The first fixing member is connected to the first slide groove by bolts and can adjust the longitudinal position. A second slide groove is provided on the first fixing member. The second fixing member is connected to the second slide groove by bolts and can adjust the lateral position. The second fixing member is connected to the clamping tube through a rotating sleeve so that the clamping tube can adjust the height position and rotate 360 ​​degrees.

7. A muddy and slag-discharging simulation experimental device for a full-face shaft boring machine according to claim 1, It is characterized in that A pressure sensor is arranged in the experimental water tank, a water outlet and a screen are provided at the bottom of the experimental water tank, and a valve is provided at the water outlet to quickly discharge the water in the experimental water tank through the water outlet, so as to facilitate the observation of the distribution characteristics of the debris in the experimental water tank under the scouring effect.

8. A full-section vertical shaft boring machine muddy water slag discharge simulation experimental device according to claim 1, It is characterized in that A solid-liquid separation structure is arranged in the water tank, and the solid-liquid separation structure divides the water tank into a clean water area and a slurry area. The liquid inlet pipeline is connected to the clean water area, and the liquid return pipeline is connected to the slurry area.

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