Slurry mode slagging system of slurry-soil pressure double-mode shield machine

Abstract

This invention discloses a slurry-mode muck removal system for a slurry-earth pressure dual-mode shield tunneling machine, comprising a slurry inlet pipe, a screw conveyor, a quarry box, a crusher, and two direct discharge pipes. A third pneumatic ball valve is installed at the front of the slurry inlet pipe; the slurry inlet of the screw conveyor is connected to the lower part of the slurry chamber; the slurry inlet of the quarry box is connected to the main slurry outlet of the screw conveyor, and a second pneumatic ball valve is installed at the slurry inlet of the direct discharge pipe of the quarry box; the crusher is located at the front of the first trolley of the shield tunneling machine, and its inlet and outlet are respectively connected to the slurry outlet of the quarry box and the front end of the main slurry discharge pipe; the inlets of the two direct discharge pipes are symmetrically located on both sides of the slurry inlet of the screw conveyor, and their rear ends are connected to the inlet of the second pneumatic ball valve; an emergency backup slurry discharge pipe is connected between the spare slurry outlet of the screw conveyor and the slurry outlet of the quarry box; a flushing pipe is connected between the inlet of the third pneumatic ball valve and the inlet of the second pneumatic ball valve. This invention can ensure the continuity of tunneling while avoiding pipe and quarry blockage.

Description

Technical Field

[0001] This invention relates to a slurry-mode muck removal system for a slurry-earth pressure dual-mode shield tunneling machine. Background Technology

[0002] In the construction of underground projects such as urban subways and river-crossing tunnels, slurry / earth pressure dual-mode shield tunneling machines have become the mainstream equipment for construction in complex composite strata, water-rich sandy gravel strata with strong karst development, and strata with uneven soft and hard surfaces due to their advantages of stable pressure in slurry mode and strong adaptability in earth pressure mode. Most existing dual-mode shield tunneling machines use a single-row slurry pipeline + quarry box for their slurry mode muck removal system, while a small number use a parallel muck removal method in slurry mode. The traditional slurry mode muck removal system of dual-mode shield tunneling machines has a relatively simple channel design, which cannot fully adapt to various geological environments. In general, muck removal system stagnation is unavoidable, and the system lacks an emergency redundancy mechanism. Once the screw conveyor jams or the quarry box becomes severely blocked, it usually has to be shut down for maintenance or manual clearing, which not only increases labor costs but also affects construction efficiency. Furthermore, in traditional systems, the quarry box and crusher are integrated at the muck discharge gate of the screw conveyor, making it impossible to screen and intercept large materials in advance, which can easily cause the crusher to jam or the cutting edge to wear out, reducing the service life of the equipment. In addition, the traditional slag removal system lacks anti-clogging measures, which affects the continuous tunneling of the shield. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a slurry-mode muck removal system for a slurry-earth pressure dual-mode shield tunneling machine, which can ensure the continuity of tunneling while avoiding pipe and box blockage.

[0004] The objective of this invention is achieved as follows: a slurry-mode muck removal system for a slurry-earth pressure dual-mode shield tunneling machine, comprising a slurry inlet pipe, a screw conveyor, a quarry box, a crusher, two direct discharge pipes, an emergency backup slurry discharge pipe, a main slurry discharge pipe, and a flushing pipe; wherein, The front end of the grout inlet pipe is connected to the upper part of the slurry chamber of the tunnel boring machine. A third pneumatic ball valve is installed at the front of the grout inlet pipe, and the rear end of the grout inlet pipe is connected to a set position outside the tunnel. The slag inlet of the screw conveyor is connected to the lower part of the slurry chamber of the tunnel boring machine, and a spare slag outlet is opened on the cylinder wall of the screw conveyor above the main slag outlet. The slag inlet of the quarry box is connected to the main slag outlet of the screw conveyor, and a second pneumatic ball valve is installed at the slurry inlet of the straight discharge pipe of the quarry box. The crusher is located at the front of the No. 1 trolley of the tunnel boring machine, and the inlet of the crusher is connected to the slurry outlet of the quarry box through a front-mounted slurry discharge pipe. The inlet ends of the two straight discharge pipes are also located in the mud and water chamber of the tunnel boring machine and are symmetrically located on both sides of the slag inlet of the screw conveyor; one straight discharge pipe is connected to the inlet of the second pneumatic ball valve in sequence through the first manual gate valve and the first hydraulic gate valve; the other straight discharge pipe is connected to the inlet of the second pneumatic ball valve in sequence through the second manual gate valve and the second hydraulic gate valve. The inlet end of the emergency backup slurry discharge pipe is connected to the backup slag outlet of the screw conveyor, and the outlet end of the emergency backup slurry discharge pipe is connected to the slurry discharge outlet of the quarry box. A third hydraulic gate valve is installed on the emergency backup slurry discharge pipe. The front end of the main slurry discharge pipe is connected to the outlet of the crusher, and the rear end of the main slurry discharge pipe is connected to a designated position outside the tunnel. The flushing pipe is connected between the inlet of the third pneumatic ball valve and the inlet of the second pneumatic ball valve, and the first pneumatic ball valve is installed on the flushing pipe; During the normal slurry tunneling stage, the main passage muck removal mode or the dual auxiliary passage muck removal mode shall be selected. When the main channel slag discharge mode is adopted, the gate of the main slag discharge port of the screw conveyor is opened, and the third pneumatic ball valve is opened. The first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve, the second pneumatic ball valve, and the third hydraulic gate valve are closed. At this time, the slag in the mud and water bin is first transported to the quarry box for screening through the main slag discharge port of the screw conveyor, and then enters the crusher through the pre-installed slurry discharge pipe. After being crushed by the crusher, it is discharged through the main slurry discharge pipe or directly. If the quarry box is blocked or there is a sudden abnormal flow, the gate of the main slag discharge port of the screw conveyor is closed, the spare slag discharge port of the screw conveyor is opened, and the third hydraulic gate valve is opened separately to establish an emergency slurry discharge channel to maintain the tunnel boring machine's continuous tunneling. The slag in the mud and water bin is sent to the crusher through the spare slag discharge port of the screw conveyor in sequence through the emergency spare slurry discharge pipe and the pre-installed slurry discharge pipe. After being crushed by the crusher, it is discharged through the main slurry discharge pipe or directly. When the dual auxiliary passage slag discharge mode is adopted, the gate valve of the main slag discharge port of the screw conveyor and the third hydraulic gate valve are closed, the third pneumatic ball valve is opened, and the first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve and the second pneumatic ball valve are opened. The slurry in the mud and water bin is first transported to the quarry for screening through two direct discharge pipes, and then enters the crusher through the pre-discharge pipe. After being crushed by the crusher, it is discharged through the main discharge pipe or directly discharged. When the tunnel boring machine is in bypass mode, the gate of the main slag discharge port of the screw conveyor is closed, the third pneumatic ball valve is closed, and the first manual gate valve, the first hydraulic gate valve, the second manual gate valve and the second hydraulic gate valve are closed. The first pneumatic ball valve and the second pneumatic ball valve are opened. The flushing water source is connected through the slurry inlet pipe, and the quarry box is flushed with a large flow rate by controlling the opening degree of the second pneumatic ball valve.

[0005] The above-mentioned slurry-water mode muck removal system of the slurry-water earth pressure dual-mode shield machine includes a slurry pump set installed on the main slurry discharge pipe, which is installed on the No. 2 trolley of the shield machine.

[0006] The above-mentioned slurry-water mode muck removal system of the slurry-water earth pressure dual-mode shield machine, when using the main passage muck removal mode or the dual auxiliary passage muck removal mode, comprehensively judges whether the quarry box and slurry chamber are stuck during the tunneling process based on the pressure of the quarry box, the inlet and outlet pressure of the slurry pump group, and the flow rate of the slurry inlet and outlet. When the quarry box is stuck, the opening and closing action of the first pneumatic ball valve is controlled to intermittently flush the quarry box. When the bottom of the slurry chamber is stuck, the first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve and the first pneumatic ball valve are opened, the second pneumatic ball valve is closed, and the bottom of the slurry chamber is flushed by two straight discharge pipes. If the screw conveyor jams, wears out, or is under maintenance, close the gate of the main slag outlet of the screw conveyor. By opening the first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve, and the second pneumatic ball valve, the slurry in the mud and water bin is first sent to the quarry box through two direct discharge pipes, and then enters the crusher through the pre-discharge pipe. After being crushed by the crusher, it is discharged externally through the main discharge pipe or directly.

[0007] The slurry mode muck removal system for a slurry-water earth pressure dual-mode shield tunneling machine of the present invention 1. During the normal slurry tunneling phase, a slag removal mode of screw conveyor + quarry + crusher is adopted to fully utilize the active slag carrying capacity of screw conveyor and achieve efficient slag removal. At the same time, the parallel slag removal and online flushing anti-clogging function in slurry mode are utilized. Based on the pressure, the quarry is intermittently flushed to solve the problem of easy quarry blockage in slurry mode. This realizes online active intervention in the risk of quarry blockage and solves the passive cycle problem of "blockage-stop-cleaning" in the traditional mode, thereby improving the tunneling speed.

[0008] 2. In tunneling mode, the mud valve can be opened to select the direct discharge pipe to flush the bottom of the mud and water chamber, which solves the problem of bottom stagnation in the mud and water chamber and improves the overall construction efficiency by more than 30%.

[0009] 3. The pre-positioned quarry for centralized screening has outstanding efficiency in reducing blockages and losses. All materials under working conditions are uniformly collected into the quarry for pre-screening and interception. During the early grouting and reinforcement process, pipes, drill bits, and irregularly shaped debris that accidentally fall off are pre-isolated by the quarry, which not only reduces the probability of pipeline blockage but also reduces the load on the crusher and the wear on the cutting edge. The rear crusher crushes large-diameter objects and discharges slag, reducing the safety hazards of collapse and settlement caused by downtime, extending the service life of the equipment, and reducing the frequency of equipment maintenance.

[0010] 4. A comprehensive redundancy emergency system ensures controllable construction continuity: A dedicated emergency backup slurry discharge pipeline for the screw conveyor has been added, forming a multi-channel slag discharge system consisting of "main slurry discharge path + dual auxiliary slurry discharge paths + emergency slurry discharge pipeline". In case of slurry pipe failure, the screw conveyor is used for diversion, and in case of emergencies, the emergency backup slurry discharge pipeline is used for diversion, effectively reducing unplanned downtime and ensuring continuous tunneling operations. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the middle shield body of the slurry mode muck removal system of the slurry-water-earth-pressure dual-mode shield machine of the present invention. Figure 2 This is a structural principle diagram of the slurry mode muck removal system of the slurry-water earth pressure dual-mode shield machine of the present invention (main passage muck removal mode during normal tunneling). Figure 3 This is a structural principle diagram of the slurry mode muck removal system of the slurry-water earth pressure dual-mode shield machine of the present invention (dual auxiliary passage muck removal mode during normal tunneling). Figure 4 This is a structural principle diagram of the slurry mode muck removal system of the slurry-water earth pressure dual-mode shield machine of the present invention (the bottom of the slurry chamber is flushed by the straight discharge pipe during the normal tunneling stage). Figure 5 This is a structural principle diagram of the slurry mode muck removal system of the slurry-water earth pressure dual-mode shield machine of the present invention (the muck removal mode of the emergency backup pipeline is opened during the normal tunneling stage). Figure 6 This is a structural principle diagram of the slurry mode muck removal system of the slurry-water earth pressure dual-mode shield machine of the present invention (washing of the quarry box during bypass mode tunneling). Detailed Implementation

[0012] The invention will now be further described with reference to the accompanying drawings.

[0013] Please see Figures 1 to 6 The slurry mode muck removal system of the slurry-water earth pressure dual-mode shield machine of the present invention includes a slurry inlet pipe 1, a screw conveyor 2, a quarry box 3, a crusher 4, two direct discharge pipes 5, an emergency backup slurry discharge pipe 6, a main slurry discharge pipe 7, and a flushing pipe 8.

[0014] The shield body 01 of the tunnel boring machine is equipped with a partition 03 at the front end. The space between the partition 03 and the cutterhead 02 is a slurry chamber 04. The upper part of the partition 03 is equipped with a slurry inlet 031. A slurry inlet 031 can be symmetrically opened on both sides of the upper part of the partition 03. The lower part of the partition 03 is equipped with a screw conveyor slag discharge port 033. Two straight discharge pipe slag discharge ports 032 are also symmetrically opened on both sides of the screw conveyor slag discharge port 033 on the partition 03.

[0015] A third pneumatic ball valve 3A is installed at the front of the grout inlet pipe 1. The third ball valve 3A is located inside the shield body 01 of the tunnel boring machine. The front end of the grout inlet pipe 1 is divided into two paths, which are connected one-to-one to the two grout inlets 031 of the partition plate 03 (see...). Figure 1 The rear end of the grout inlet pipe 1 is connected to a designated position outside the tunnel; The slag inlet of the screw conveyor 2 is connected to the screw discharge port 033 of the partition plate 03; a gate is installed on the main slag outlet 21 of the screw conveyor 2; a spare slag outlet 22 is opened on the cylinder wall of the screw conveyor 2 above the main slag outlet 21. The slag inlet of the quarry box 3 is connected to the main slag outlet 21 of the screw conveyor 2; a second pneumatic ball valve 2A is installed at the slurry inlet of the straight discharge pipe of the quarry box 3. The crusher 4 is installed at the front of the No. 1 trolley of the tunnel boring machine. The inlet of the crusher 4 is connected to the discharge port of the quarry box 3 through the front discharge pipe 40. The inlet ends of the two straight discharge pipes 5 are connected one-to-one to the two slag discharge ports 032 of the two straight discharge pipes on the partition plate 03; one straight discharge pipe 5 is connected to the inlet of the second pneumatic ball valve 2A installed at the slurry inlet of the straight discharge pipe installed in the quarry box 3 through the first manual gate valve 1B and the first hydraulic gate valve 1C in sequence; the other straight discharge pipe 5 is connected to the inlet of the second pneumatic ball valve 2A installed at the slurry inlet of the straight discharge pipe installed in the quarry box 3 through the second manual gate valve 2B and the second hydraulic gate valve 2C in sequence; the two straight discharge pipes 5 are arranged in parallel with the screw conveyor 2 to form a double slag discharge circuit; The inlet end of the emergency backup slurry discharge pipe 6 is connected to the backup slag outlet 22 of the screw conveyor 2, and the outlet end of the emergency backup slurry discharge pipe 6 is connected to the slurry outlet of the quarry box 3 as a redundant slurry discharge channel. A third hydraulic gate valve 3C is installed on the emergency backup slurry discharge pipe 6. The front end of the main slurry discharge pipe 7 is connected to the outlet of the crusher 4, and the rear end of the main slurry discharge pipe 7 is connected to a set position outside the tunnel; a slurry discharge pump set 70 is installed on the main slurry discharge pipe 7, and the slurry discharge pump set 70 is located on the No. 2 trolley of the tunnel boring machine.

[0016] The flushing pipe 8 is connected between the inlet of the third pneumatic ball valve 3A and the inlet of the second pneumatic ball valve 3A, and the first pneumatic ball valve 1A is installed on the flushing pipe 8.

[0017] During the normal slurry tunneling stage, the main passage muck removal mode or the dual auxiliary passage muck removal mode shall be selected. When using the main discharge mode, i.e., the discharge mode of screw conveyor 2 + quarry 3 + crusher 4, open the gate of the main discharge port 21 of screw conveyor 2, and open the third pneumatic ball valve 3A installed in front of the slurry inlet pipe 1. Close the first manual gate valve 1B and the first hydraulic gate valve 1C on one straight discharge pipe 5, close the second manual gate valve 2B and the second hydraulic gate valve 2C on the other straight discharge pipe 5, close the third hydraulic gate valve 3C on the emergency backup slurry discharge pipe 6, and close the second pneumatic ball valve 2A installed at the slurry inlet of the straight discharge pipe of quarry 3. At this time, the slurry in the mud and water bin 04 is first transported to the quarry 3 for screening by the main discharge port 21 of screw conveyor 2, and then enters the crusher 4 through the pre-discharge pipe 40. After being crushed by the crusher 4, it is discharged through the main discharge pipe 7 or directly discharged (see Figure 2 If the quarry box 3 becomes blocked or experiences a sudden flow abnormality, the gate of the main slag outlet 21 of the screw conveyor 2 is closed, the spare slag outlet 22 of the screw conveyor 2 is opened, and the third hydraulic gate valve 3C installed on the emergency spare slurry discharge pipe 6 is opened separately to establish an emergency slurry discharge channel and maintain the tunnel boring machine's continuous excavation. The slurry in the mud and water chamber 04 is sent to the crusher 4 via the spare slag outlet 22 of the screw conveyor 2, through the emergency spare slurry discharge pipe 6 and the pre-installed slurry discharge pipe 40, and after being crushed by the crusher 4, it is discharged through the main slurry discharge pipe 7 or directly (see...). Figure 5 After the window period is completed and the normal passage is restored, close the backup slag outlet 22 of the screw conveyor 2 and the third hydraulic gate valve 3C on the emergency backup pipe 6.

[0018] When using the dual-auxiliary-path slag discharge mode, close the gate of the main slag discharge port 21 of the screw conveyor 2, and open the third pneumatic ball valve 3A installed in front of the slurry inlet pipe 1. At the same time, open the second pneumatic ball valve 2A installed at the slurry inlet of the straight discharge pipe of the quarry box 3. Open the first manual gate valve 1B and the first hydraulic gate valve 1C on one straight discharge pipe 5, and simultaneously open the second manual gate valve 2B and the second hydraulic gate valve 2C on the other straight discharge pipe 5. Close the third hydraulic gate valve 3C on the emergency backup slurry discharge pipe 6. The slurry in the mud-water bin 04 is first transported to the quarry box 3 for screening through the two straight discharge pipes 5, and then enters the crusher 4 through the pre-discharge pipe 40. After being crushed by the crusher 4, it is discharged through the main discharge pipe 7 or directly discharged (see...). Figure 3 ); During the tunneling process, the pressure of the quarry box 3, the inlet and outlet pressures of the slurry pump set 70, and the flow rates of the slurry inlet and outlet are used to comprehensively determine whether the quarry box 3 and the slurry chamber 04 are experiencing sludge buildup. When quarry box 3 experiences sludge buildup, the opening and closing of the first pneumatic ball valve 1A on the flushing pipe 8 is controlled to intermittently flush quarry box 3, ensuring the slurry passage of quarry box 3 is always maintained, increasing the tunneling speed, and achieving drainage as the primary function. When slurry chamber 04 experiences sludge buildup, the first manual gate valve 1B and the first hydraulic gate valve 1C on one straight discharge pipe 5 are opened, and the second manual gate valve 2B and the second hydraulic gate valve 2C on the other straight discharge pipe 5, as well as the first pneumatic ball valve 1A on the flushing pipe 8, are opened. The second pneumatic ball valve 2A installed at the slurry inlet of the straight discharge pipe in quarry box 3 is closed, so that the bottom of slurry chamber 04 can be flushed by the two straight discharge pipes 5 under normal slurry tunneling conditions (see...). Figure 4 This solves the problem of stagnant drainage at the bottom of mud and water tank 04.

[0019] If the screw conveyor 2 is jammed, worn, or under maintenance, close the gate of the main slag outlet 21 of the screw conveyor, open the first manual gate valve 1B and the first hydraulic gate valve 1C on one straight discharge pipe 5, and at the same time open the second manual gate valve 2B and the second hydraulic gate valve 2C on the other straight discharge pipe 5. Also open the second pneumatic ball valve 2A installed at the slurry inlet of the straight discharge pipe in the quarry box 3. The slurry in the mud and water bin 04 is first sent to the quarry box 3 through the two straight discharge pipes 5, and then enters the crusher 4 through the pre-discharge pipe 40 for crushing treatment, and is then discharged through the main discharge pipe 7 or directly discharged.

[0020] When the tunnel boring machine is in bypass mode, the gate of the main slag outlet 21 of the screw conveyor 2 is closed, and the third pneumatic ball valve 3A installed in front of the slurry inlet pipe 1 is closed. The first manual gate valve 1B and the first hydraulic gate valve 1C on one straight discharge pipe 5 are closed, and the second manual gate valve 2B and the second hydraulic gate valve 2C on the other straight discharge pipe 5 are closed. The first pneumatic ball valve 1A installed on the flushing pipe 8 is opened, and the second pneumatic ball valve 2A installed at the slurry inlet of the straight discharge pipe of the quarry box 3 is opened. The flushing water source is connected through the slurry inlet pipe 1, and the quarry box 3 is flushed with a large flow rate by controlling the opening of the second pneumatic ball valve 2A (see...). Figure 6 ).

[0021] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of the invention and should be defined by the claims.

Claims

1. A slurry discharge system for a slurry-water pressure dual-mode shield tunneling machine, comprising a slurry inlet pipe, a screw conveyor, a quarry, a crusher, two direct discharge pipes, and a main slurry discharge pipe; the front end of the slurry inlet pipe is connected to the upper part of the slurry chamber of the shield tunneling machine, and the rear end of the slurry inlet pipe is connected to a designated position outside the tunnel; the slurry inlet of the screw conveyor is connected to the lower part of the slurry chamber of the shield tunneling machine; the inlet ends of the two direct discharge pipes are also located in the slurry chamber of the shield tunneling machine and symmetrically positioned on both sides of the slurry inlet of the screw conveyor; characterized in that, The slurry removal system also includes an emergency backup slurry discharge pipe and a flushing pipe; The screw conveyor has a spare slag outlet on its cylinder wall above the main slag outlet; The quarry inlet is connected to the main outlet of the screw conveyor; a second pneumatic ball valve is installed at the slurry inlet of the straight discharge pipe of the quarry. The crusher is located at the front of the No. 1 trolley of the tunnel boring machine, and the inlet of the crusher is connected to the slurry outlet of the quarry box through a front-mounted slurry discharge pipe. One straight pipe is connected to the inlet of the second pneumatic ball valve in sequence through the first manual gate valve and the first hydraulic gate valve; the other straight pipe is connected to the inlet of the second pneumatic ball valve in sequence through the second manual gate valve and the second hydraulic gate valve. The inlet end of the emergency backup slurry discharge pipe is connected to the backup slag outlet of the screw conveyor, and the outlet end of the emergency backup slurry discharge pipe is connected to the slurry discharge outlet of the quarry box. A third hydraulic gate valve is installed on the emergency backup slurry discharge pipe. The front end of the main slurry discharge pipe is connected to the outlet of the crusher, and the rear end of the main slurry discharge pipe is connected to a designated position outside the tunnel. A third pneumatic ball valve is installed at the front of the slurry inlet pipe; The flushing pipe is connected between the inlet of the third pneumatic ball valve and the inlet of the second pneumatic ball valve, and the first pneumatic ball valve is installed on the flushing pipe; During the normal slurry tunneling stage, the main passage muck removal mode or the dual auxiliary passage muck removal mode shall be selected. When the main channel slag discharge mode is adopted, the gate of the main slag discharge port of the screw conveyor is opened, and the third pneumatic ball valve is opened. The first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve, the second pneumatic ball valve, and the third hydraulic gate valve are closed. At this time, the slag in the mud and water bin is first transported to the quarry box for screening through the main slag discharge port of the screw conveyor, and then enters the crusher through the pre-installed slurry discharge pipe. After being crushed by the crusher, it is discharged through the main slurry discharge pipe or directly. If the quarry box is blocked or there is a sudden abnormal flow, the gate of the main slag discharge port of the screw conveyor is closed, the spare slag discharge port of the screw conveyor is opened, and the third hydraulic gate valve is opened separately to establish an emergency slurry discharge channel to maintain the tunnel boring machine's continuous tunneling. The slag in the mud and water bin is sent to the crusher through the spare slag discharge port of the screw conveyor in sequence through the emergency spare slurry discharge pipe and the pre-installed slurry discharge pipe. After being crushed by the crusher, it is discharged through the main slurry discharge pipe or directly. When the dual auxiliary passage slag discharge mode is adopted, the gate valve of the main slag discharge port of the screw conveyor and the third hydraulic gate valve are closed, the third pneumatic ball valve is opened, and the first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve and the second pneumatic ball valve are opened. The slurry in the mud and water bin is first transported to the quarry for screening through two direct discharge pipes, and then enters the crusher through the pre-discharge pipe. After being crushed by the crusher, it is discharged through the main discharge pipe or directly discharged. When the tunnel boring machine is in bypass mode, the gate of the main slag discharge port of the screw conveyor is closed, the third pneumatic ball valve is closed, and the first manual gate valve, the first hydraulic gate valve, the second manual gate valve and the second hydraulic gate valve are closed. The first pneumatic ball valve and the second pneumatic ball valve are opened. The flushing water source is connected through the slurry inlet pipe, and the quarry box is flushed with a large flow rate by controlling the opening degree of the second pneumatic ball valve.

2. The slurry-mode muck removal system of the slurry-earth pressure dual-mode shield tunneling machine according to claim 1, characterized in that, A slurry pump set is installed on the main slurry pipe, and the slurry pump set is installed on the No. 2 trolley of the tunnel boring machine.

3. The slurry-mode muck removal system of the slurry-earth pressure dual-mode shield tunneling machine according to claim 1, characterized in that, When using the main channel slag removal mode or the dual auxiliary channel slag removal mode, during the tunneling process, the pressure of the quarry box, the inlet and outlet pressures of the slurry pump set, and the flow rate of the slurry inlet and outlet are used to comprehensively determine whether the quarry box and the slurry chamber are experiencing sludge buildup. When quarry box sludge buildup occurs, the opening and closing action of the first pneumatic ball valve is controlled to intermittently flush the quarry box. When sludge buildup occurs at the bottom of the slurry chamber, the first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve, and the first pneumatic ball valve are opened, and the second pneumatic ball valve is closed. The bottom of the slurry chamber is flushed by two direct discharge pipes. If the screw conveyor jams, wears out, or is under maintenance, close the gate of the main slag outlet of the screw conveyor. By opening the first manual gate valve, the first hydraulic gate valve, the second manual gate valve, the second hydraulic gate valve, and the second pneumatic ball valve, the slurry in the mud and water bin is first sent to the quarry box through two direct discharge pipes, and then enters the crusher through the pre-discharge pipe. After being crushed by the crusher, it is discharged externally through the main discharge pipe or directly.

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