TBM slag discharge device

Abstract

The present invention discloses a TBM slag discharge device, comprising: a water filtration conveying assembly, comprising a water filtration conveyor, a collecting hopper disposed above one end of the water filtration conveyor, and drainage grooves disposed on the front and rear sides of the water filtration conveyor; and an improvement conveying assembly, comprising a twin-screw conveyor, one end of which is sequentially provided with a special-shaped guide hopper and an improvement agent feed hopper. The water filtration conveyor comprises a first frame, a first conveyor belt, a pair of end straight rollers, a plurality of low-position rollers, a plurality of high-position rollers, and a first motor. The pair of end straight rollers are respectively mounted on both ends of the first frame via bearing seats. The plurality of low-position rollers and the plurality of high-position rollers are alternately arranged between the pair of end straight rollers, and the height of the low-position rollers is slightly lower than that of the high-position rollers. The present invention can meet the continuous slag discharge requirements of general TBM excavation projects and is also suitable for the continuous slag discharge of slag carrying a large amount of mud and water.

Description

Technical Field

[0001] The present invention relates to the technical field of TBM slag discharge equipment, and more specifically, to a TBM slag discharge device and a slag discharge method. Background Art

[0002] TBM (full-face tunnel boring machine) uses the cutters on the rotating cutterhead to squeeze and shear the rock, and picks up the slag through the bucket teeth on the rotating cutterhead, which falls into the main machine belt conveyor and is transported backward. First, the slag often carries a lot of mud and water, which makes it difficult to clean up later, and the transportation efficiency is low, affecting the efficiency of tunneling construction. Secondly, if the slag discharge method of locomotive plus bridge crane is adopted, continuous slag discharge cannot be achieved, which also affects the efficiency of tunneling construction. For example, the utility model patent with application number 201922269921.9 and the name of a double-shield TBM slag discharge combined belt conveyor system discloses that the system includes at least one horizontally arranged continuous belt conveyor, a vertical belt conveyor connected to the continuous belt conveyor is vertically arranged at the slag discharge end of the continuous belt conveyor, and a material distribution belt conveyor connected to the vertical belt conveyor is arranged at the slag discharge end of the vertical belt conveyor. Although it can realize continuous slag discharge, its transportation efficiency is low for slag carrying a large amount of mud and water. Another example is the utility model patent with application number 20202306465.8, named A Slag Discharge System for Inclined Shaft TBM. It discloses that the system includes a self-sliding slag discharge device arranged in the inclined shaft. The self-sliding slag discharge device is located below the inclined shaft TBM and corresponds to the slag-water separation device arranged at the inclined shaft entrance. The slag outlet of the slag-water separation device is provided with a slag transportation device. The slag-water separation device is arranged at the entrance to effectively separate the moisture in the slag, but it requires the arrangement of a longer self-sliding slag discharge device, which is suitable for inclined shaft projects with a slope greater than 40% and is not universally applicable. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] Another object of the present invention is to provide a TBM mucking device that can not only meet the continuous mucking needs of general TBM excavation projects, but also adapt to the continuous mucking work of muck carrying a large amount of mud and water.

[0005] In order to achieve these purposes and other advantages according to the present invention, a TBM slag discharge device is provided, comprising:

[0006] The water filter conveying assembly includes a water filter conveyor, a collection hopper located above one end of the water filter conveyor, and drainage channels located on the front and rear sides of the water filter conveyor. The collection hopper is located below the discharge end of the TBM main machine belt conveyor.

[0007] The improved conveying assembly includes a twin-screw conveyor, one end of which is provided with a special-shaped guide hopper and an improver feed hopper in sequence, the special-shaped guide hopper is located below the discharge end of the water filter conveyor, the inner cavity of the special-shaped guide hopper is a special Z-shape so that the inner cavity has at least one horizontal conveying section, and the horizontal conveying section is provided with a near-infrared moisture tester;

[0008] Among them, the water filtration conveyor includes a first frame, a first conveyor belt, a pair of end straight rollers, multiple low-position rollers, multiple high-position rollers and a first motor. A pair of end straight rollers are respectively installed at both ends of the first frame through bearing seats, multiple low-position rollers and multiple high-position rollers are located between the pair of end straight rollers and are arranged alternately, and the height of the low-position rollers is slightly lower than that of the high-position rollers. The first conveyor belt is matched and installed on a pair of end straight rollers, multiple low-position rollers and multiple high-position rollers.

[0009] Preferably, the low-position roller includes a first crossbeam located on the first frame, a short straight cross roller and a pair of oblique rollers, the cross roller is installed in the middle of the first cross beam through a bearing seat, one end of the pair of oblique rollers is installed on the first frame through a first support column, and the other end is connected to both sides of the cross roller to form an inverted trapezoid.

[0010] Preferably, the high-position roller includes a second crossbeam located on the first frame and a long straight cross roller installed on the second crossbeam through second support columns arranged on both sides of the first frame, and the height of the first support column is slightly lower than that of the second support column.

[0011] Preferably, the TBM slag discharge device also includes a straight conveying assembly, which is a straight conveyor located below the discharge end of the twin-screw conveyor. The straight conveyor includes a second frame, a second conveyor belt, a pair of end straight rollers, a plurality of intermediate rollers and a second motor. The pair of end straight rollers are respectively installed at both ends of the second frame through bearing seats, and the plurality of intermediate rollers are arranged between the pair of end straight rollers. The second conveyor belt is matched and installed on the pair of end straight rollers and the plurality of intermediate rollers.

[0012] Preferably, the bottoms of the water filtration conveyor, twin-screw conveyor and straight conveyor are respectively provided with a first leg, a second leg and a third leg, and a first connecting rod is provided between adjacent first legs and second legs, and a second connecting rod is provided between adjacent second legs and third legs.

[0013] Preferably, wheels are provided at the bottoms of the first tripod, the second tripod and the third tripod.

[0014] Preferably, the distance between the adjacent low-position rollers and high-position rollers along the extending direction from one end to the other end of the water filtration conveyor gradually increases.

[0015] The present invention further claims protection for a slag discharge method based on the TBM slag discharge device, comprising:

[0016] Step 1: The TBM main machine belt conveyor transports the soil through the collecting hopper to the water filter conveyor to complete the initial water filtering;

[0017] Step 2: The water filter conveyor further transports the preliminarily filtered soil to the special-shaped guide hopper of the twin-screw conveyor. At the same time, the soil moisture content W at the discharge end of the water filter conveyor and the conveying speed V of the water filter conveyor are measured by the near-infrared moisture tester in the special-shaped guide hopper. 料 Calculate the feed rate V of the improver in the improver feed hopper 改良 , add improver;

[0018] Step 3: The twin-screw conveyor transports the slag and improver mixture to the straight conveyor, and then transports it to the transport vehicle, or uses other transport devices to transport it to the transport vehicle.

[0019] Preferably, the soil moisture content W at the discharge end of the water filter conveyor in step 2 and the conveying speed V of the water filter conveyor are 料 , Twin screw conveyor conveying speed V 螺杆 and the feed rate V of the improver 改良 The relationship is as follows:

[0020] The soil moisture content W at the discharge end of the water filter conveyor is ≤ 25%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C1, where C1 is 0.15 to 0.32;

[0021] The moisture content of the soil at the discharge end of the water filter conveyor is 25%<W<60%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C2, where C2 is 0.33 to 0.43;

[0022] The soil moisture content W at the discharge end of the water filter conveyor is ≥ 60%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C3, where C3 is 0.44~0.57;

[0023] The value of K is 0.2~0.4.

[0024] The present invention includes at least the following beneficial effects: the present invention adopts a water filtering conveying component and an improved conveying component to respectively perform initial slag-water separation and deep improvement on the slag. Among them, the initial slag-water separation of the slag is achieved by changing the arrangement of the rollers of the water filtering conveyor, so that the slag forms a low-level depression at the low-level roller on the water filtering conveyor due to its own gravity. Then, according to the difference in friction between water and slag on the water filtering conveyor, the slag and water are separated, the water is discharged from the drainage trough, and the slag is further transported forward. Then, through the improved conveying component, the slag and the improver are fully mixed and transported to the next conveying link, which meets the continuous slag discharge needs of most slag, and especially greatly improves the transportation efficiency of slag with high water content.

[0025] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the TBM slag discharge device in one technical solution of the present invention;

[0027] Figure 2 This is a schematic structural diagram of the low-position rollers and the high-position rollers in the water filtration conveyor according to another technical solution of the present invention;

[0028] Among them, 1. First frame; 2. Drainage trough; 3. End straight roller; 4. Collecting hopper; 5. Low-position roller; 6. High-position roller; 7. Special-shaped hopper; 8. Modifier guide hopper; 9. Twin-screw conveyor; 10. Middle roller; 11. Second frame; 12. End straight roller; 13. Third tripod; 14. Second tripod; 15. First tripod; 16. Wheel; 17. First connecting rod; 18. Second connecting rod; 19. Oblique roller; 20. Short straight roller; 21. First support column; 22. First crossbeam; 23. Second support column; 24. Long straight roller; 25. Second crossbeam. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0030] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0031] like Figure 1 、 2 As shown, the present invention provides a slag discharge device for TBM, comprising:

[0032] The filtered water conveying assembly includes a filtered water conveyor, a collecting hopper 4 arranged above one end of the filtered water conveyor, and drainage troughs 2 arranged on the front and rear sides of the filtered water conveyor. The collecting hopper 4 is located below the discharge end of the TBM main machine belt conveyor;

[0033] The improved conveying assembly includes a twin-screw conveyor 9, one end of which is provided with a special-shaped guide hopper 7 and an improver feed hopper 8 in sequence. The special-shaped guide hopper 7 is located below the discharge end of the water filter conveyor. The inner cavity of the special-shaped guide hopper 7 is a special Z-shape so that the inner cavity has at least one horizontal conveying section, and the horizontal conveying section is provided with a near-infrared moisture tester; the improver feed hopper 8 is provided with a vertical stirrer;

[0034] Among them, the water filtration conveyor includes a first frame 1, a first conveyor belt, a pair of end straight rollers 3, multiple low-position rollers 5, multiple high-position rollers 6 and a first motor. A pair of end straight rollers 3 are respectively installed at both ends of the first frame 1 through bearing seats. Multiple low-position rollers 5 and multiple high-position rollers 6 are located between the pair of end straight rollers 3 and are arranged alternately, and the height of the low-position rollers 5 is slightly lower than that of the high-position rollers 6. The first conveyor belt is matched and installed on a pair of end straight rollers 3, multiple low-position rollers 5 and multiple high-position rollers 6.

[0035] In the above technical solution, the TBM slag discharge device is arranged below the discharge end of the TBM main machine belt conveyor, and includes a water filtration and conveying component and an improved conveying component arranged in sequence in the opposite direction of the TBM excavation direction, wherein the water filtration and conveying component includes a water filtration conveyor, a collecting hopper 4 arranged above one end of the water filtration conveyor, and a drainage trough 2 arranged on the front and rear sides of the water filtration conveyor, wherein the collecting hopper 4 is used to receive the slag at the discharge end of the TBM main machine belt conveyor, and the water filtration conveyor is used for the preliminary separation of slag and water and the continued transportation of the slag after separation. The water filtration conveyor is provided with alternating low-level rollers 5 and high-level rollers 6. During the transportation of the slag by the water filtration conveyor, a low-level depression is formed at the low-level roller due to the action of the slag's own gravity, and then according to the difference in friction between water and slag on the water filtration conveyor, the slag and water are separated, and the water content is reduced. The slag is discharged from the drainage grooves 2 on the front and rear sides, and the separated slag is further transported forward; the improved conveying component is used to improve the slag after the slag and water are separated, which is conducive to the timely transfer and secondary use of the slag. The improver used is bentonite and super absorbent resin mixed in a weight ratio of 0-1:2-6; the improved conveying component includes a twin-screw conveyor 9, which is used for sufficient mixing of the improver and slag and forced transportation to the next transportation section; the twin-screw conveyor 9 is provided with a special-shaped guide hopper 7 and a improver feed hopper 8, wherein the special-shaped guide hopper 7 has at least one horizontal conveying section, and its horizontal conveying section is provided with a near-infrared moisture tester, which can instantly measure the moisture content of the slag, and is used to control the feeding speed of the improver feed hopper 8, and the feeding speed of the improver feed hopper 8 is measured by the speed of the agitator in the improver feed hopper 8 (t / s).

[0036] In the above technical solution, the TBM slag discharge device of the present application does not affect the slag improvement in front of the TBM main machine belt conveyor for the purpose of protecting the cutter disc and soil chamber. The working process of the TBM slag discharge device is as follows: the TBM main machine belt conveyor transports the slag through the collecting hopper to the water filtration conveyor to complete the preliminary water filtration; the water filtration conveyor further transports the slag that has undergone preliminary water filtration to the special-shaped guide hopper of the twin-screw conveyor, and at the same time adds the modifier to the modifier feed hopper; the twin-screw conveyor transports the slag and modifier mixture to the straight conveyor, and then transports it to the transport vehicle, or uses other transport devices to transport it to the transport vehicle.

[0037] like Figure 2 As shown, in one of the technical solutions, the low-position roller 5 includes a first crossbeam 22, a short straight cross roller 20 and a pair of inclined rollers 19 located on the first frame 1. The short straight cross roller 20 is installed in the middle of the first crossbeam 22 through a bearing seat. One end of a pair of inclined rollers 19 is installed on the first frame 1 through a first support column 21, and the other end is connected to both sides of the short straight cross roller 20 to form an inverted trapezoid. The arrangement of the inverted trapezoidal short straight cross roller 20 and the inclined roller 19 allows the slag to form a low point at the short straight cross roller 20 due to its own gravity when perpendicular to the conveying direction. The first support column 21 is slightly lower than the second support column 23, so that multiple relatively low points are formed in the slag conveying direction. The difference in friction between water and slag on the conveyor belt separates the slag and water, which facilitates the smooth discharge of water from the drainage trough 2.

[0038] exist Figure 2 In one of the technical solutions, the high-position roller 6 includes a second crossbeam 25 located on the first frame 1 and a long straight cross roller 24 installed on the second crossbeam 25 through second support columns 23 arranged on both sides of the first frame 1. The height of the first support column 21 is slightly lower than that of the second support column 23. The setting of the long straight cross roller 24 has two functions: one is to form a height difference with the short straight cross roller 20, and the other is to appropriately reduce the resistance of the conveyor belt operation. Preferably, the straight rollers 3 closest to the two side ends are all high-position rollers 6.

[0039] like Figure 1 In one of the technical solutions, the TBM slag discharge device also includes a straight conveying assembly, which is a straight conveyor located below the discharge end of the twin-screw conveyor 9. The straight conveyor includes a second frame 11, a second conveyor belt, a pair of end straight rollers 12, a plurality of intermediate rollers 10 and a second motor. The pair of end straight rollers 12 are respectively installed at both ends of the second frame 11 through bearing seats, and the plurality of intermediate rollers 10 are arranged between the pair of end straight rollers 12. The second conveyor belt is matched and installed on the pair of end straight rollers 12 and the plurality of intermediate rollers 10. The arrangement of the straight conveying assembly facilitates the transportation of the improved slag to the transport vehicle.

[0040] like Figure 1 As shown, in one of the technical solutions, the bottoms of the water filtration conveyor, the twin-screw conveyor and the straight conveyor are respectively provided with a first leg 15, a second leg 14 and a third leg 13, and a first connecting rod 17 is provided between adjacent first legs 15 and second legs 14, and a second connecting rod 18 is provided between adjacent second legs 14 and third legs 13, so as to connect multiple conveying mechanisms and facilitate overall movement.

[0041] As shown in Figure 1 , in one of the technical solutions, wheels 16 are provided at the bottom of the first leg 15 , the second leg 14 and the third leg 13 to facilitate the movement of the TBM slag discharge device.

[0042] like Figure 1 As shown, in one of the technical solutions, the distance between the adjacent low-position rollers 5 and high-position rollers 6 along the extension direction of the water filtration conveyor from one end to the other end gradually increases, forming a larger low position, which is convenient for the full separation of slag and water.

[0043] The present invention further claims protection for a slag discharge method based on the TBM slag discharge device, comprising:

[0044] Step 1: The TBM main machine belt conveyor transports the soil through the collecting hopper to the water filter conveyor to complete the initial water filtering;

[0045] Step 2: The water filter conveyor further transports the preliminarily filtered soil to the special-shaped guide hopper of the twin-screw conveyor. At the same time, the soil moisture content W at the discharge end of the water filter conveyor and the conveying speed V of the water filter conveyor are measured by the near-infrared moisture tester in the special-shaped guide hopper. 料 Calculate the feed rate V of the improver in the improver feed hopper 改良 , add improver;

[0046] Step 3: The twin-screw conveyor transports the slag and improver mixture to the straight conveyor, and then transports it to the transport vehicle, or uses other transport devices to transport it to the transport vehicle.

[0047] Preferably, the soil moisture content W at the discharge end of the water filter conveyor in step 2 and the conveying speed V of the water filter conveyor are 料 , Twin screw conveyor conveying speed V 螺杆 and the feed rate V of the improver 改良 The relationship is as follows:

[0048] The soil moisture content W at the discharge end of the water filter conveyor is ≤ 25%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C1, where C1 is 0.15 to 0.32;

[0049] The moisture content of the soil at the discharge end of the water filter conveyor is 25%<W<60%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C2, where C2 is 0.33 to 0.43;

[0050] The soil moisture content W at the discharge end of the water filter conveyor is ≥ 60%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C3, where C3 is 0.44~0.57;

[0051] The value of K is 0.2~0.4.

[0052] Example 1

[0053] The slag discharge method based on the TBM slag discharge device includes:

[0054] Step 1: The TBM main machine belt conveyor transports the soil through the collecting hopper to the water filter conveyor to complete the initial water filtering;

[0055] Step 2: The water filter conveyor further transports the preliminarily filtered soil to the special-shaped guide hopper of the twin-screw conveyor. At the same time, the soil moisture content W at the discharge end of the water filter conveyor and the conveying speed V of the water filter conveyor are measured by the near-infrared moisture tester in the special-shaped guide hopper. 料 Calculate the feed rate V of the improver in the improver feed hopper 改良 , add improver; wherein the water content of the soil at the discharge end of the water filter conveyor W is the value measured by the infrared moisture tester, the conveying speed of the water filter conveyor V 料 In terms of the speed ratio of the filter conveyor (m / s), the feed rate of the improver V 改良 The conveying speed V of the twin screw conveyor is measured by the speed (r / s) of the stirrer in the improver feed hopper 8. 螺杆 Measured as one tenth of the screw speed (r / min);

[0056] Step 3: The twin-screw conveyor transports the slag and improver mixture to the straight conveyor, and then transports it to the transport vehicle, or uses other transport devices to transport it to the transport vehicle.

[0057] Example 2

[0058] The present invention also includes the feed rate V of the improver in step 2 改良 The optimization step, the feed rate of the improver V 改良According to the soil moisture content W at the discharge end of the water filter conveyor and the conveying speed V of the water filter conveyor 料 , Twin screw conveyor conveying speed V 螺杆 and the feed rate V of the improver 改良 Relational calculation:

[0059] The soil moisture content W at the discharge end of the water filter conveyor is ≤ 25%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C1, where C1 is 0.15 to 0.32;

[0060] The moisture content of the soil at the discharge end of the water filter conveyor is 25%<W<60%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C2, where C2 is 0.33 to 0.43;

[0061] The soil moisture content W at the discharge end of the water filter conveyor is ≥ 60%, and the feed rate of the improver is V 改良 =(conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ╳K)╳C3, where C3 is 0.44~0.57;

[0062] The value of K is 0.2~0.4.

[0063] The feed rate of the improver is affected by the soil moisture content W at the discharge end of the filter conveyor and the conveying speed V of the filter conveyor. 料 , Twin screw conveyor conveying speed V 螺杆 The influence of three factors, among which the soil moisture content W at the discharge end of the water filter conveyor has the greatest impact on it, and the conveying speed V of the water filter conveyor 料 Secondly, the applicant proposed the feed rate V of the improver after experiments. 改良 Regarding the soil moisture content W at the discharge end of the water filter conveyor and the conveying speed V of the water filter conveyor 料 , Twin screw conveyor conveying speed V 螺杆 The fitting function, the feed rate V of the improver determined according to the above fitting function 改良This not only ensures the smooth and continuous operation of the TBM's slag discharge device, but also closely coordinates with back-end transportation equipment to ensure timely transfer of slag, thereby ensuring the efficiency of TBM excavation. Furthermore, the feed rate of the modifier also affects the final shape of the slag. The modifier used in this application can effectively increase the porosity of the slag, with a porosity of up to 43%. Planting soil can be directly produced by adding soil, sand, gravel, sawdust, peat, dead leaves, etc., supplemented with high-organic fermented manure, fermented food waste, and fermented garden waste.

[0064] The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the TBM slag discharge device of the present invention will be apparent to those skilled in the art.

[0065] As described above, according to the present invention, the present invention includes at least the following beneficial effects: the present invention adopts a water filtering conveying component and an improved conveying component to respectively perform initial slag-water separation and deep improvement on the slag, wherein the initial slag-water separation of the slag is performed by changing the arrangement of the rollers of the water filtering conveyor, so that the slag forms a low-level depression at the low-level roller on the water filtering conveyor due to its own gravity, and then according to the difference in friction between water and slag on the water filtering conveyor, the slag and water are separated, the water is discharged from the drainage trough, and the slag is further transported forward, and then through the improved conveying component, the slag and the improver are fully mixed and transported to the next conveying link, which meets the continuous slag discharge needs of most slag, especially greatly improves the transportation efficiency of slag with high water content.

[0066] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. TBM slag discharge device, characterized in that: include: The water filter conveying assembly includes a water filter conveyor, a collection hopper located above one end of the water filter conveyor, and drainage channels located on the front and rear sides of the water filter conveyor. The collection hopper is located below the discharge end of the TBM main machine belt conveyor. The improved conveying assembly includes a twin-screw conveyor, one end of which is provided with a special-shaped guide hopper and an improver feed hopper in sequence, the special-shaped guide hopper is located below the discharge end of the water filter conveyor, the inner cavity of the special-shaped guide hopper is a special Z-shape so that the inner cavity has at least one horizontal conveying section, and the horizontal conveying section is provided with a near-infrared moisture tester; Among them, the water filtration conveyor includes a first frame, a first conveyor belt, a pair of end straight rollers, multiple low-position rollers, multiple high-position rollers and a first motor. A pair of end straight rollers are respectively installed at both ends of the first frame through bearing seats, multiple low-position rollers and multiple high-position rollers are located between the pair of end straight rollers and are arranged alternately, and the height of the low-position rollers is slightly lower than that of the high-position rollers. The first conveyor belt is matched and installed on a pair of end straight rollers, multiple low-position rollers and multiple high-position rollers.

2. The TBM slag discharge device according to claim 1, characterized in that: The low-position roller includes a first crossbeam located on the first frame, a short straight cross roller and a pair of oblique rollers. The short straight cross roller is installed in the middle of the first cross beam through a bearing seat. One end of the pair of oblique rollers is installed on the first frame through a first support column, and the other end is connected to both sides of the short straight cross roller to form an inverted trapezoid.

3. The TBM slag discharge device according to claim 2, characterized in that: The high-position roller includes a second crossbeam located on the first frame and a long straight cross roller installed on the second crossbeam through second support columns arranged on both sides of the first frame, and the height of the first support column is slightly lower than that of the second support column.

4. The TBM slag discharge device according to claim 3, characterized in that: It also includes a straight conveying assembly, which is a straight conveyor located below the discharge end of the twin-screw conveyor. The straight conveyor includes a second frame, a second conveyor belt, a pair of end straight rollers, multiple intermediate rollers and a second motor. The pair of end straight rollers are respectively installed at both ends of the second frame through bearing seats, and the multiple intermediate rollers are arranged between the pair of end straight rollers. The second conveyor belt is matched and installed on the pair of end straight rollers and the multiple intermediate rollers.

5. The TBM slag discharge device according to claim 4, characterized in that: The bottoms of the water filtration conveyor, twin-screw conveyor and flat conveyor are respectively provided with a first leg, a second leg and a third leg, and a first connecting rod is provided between adjacent first legs and second legs, and a second connecting rod is provided between adjacent second legs and third legs.

6. The TBM slag discharge device according to claim 5, characterized in that: The bottoms of the first tripod, the second tripod and the third tripod are all provided with wheels.

7. The TBM slag discharge device according to claim 6, characterized in that: The distance between the adjacent low-position rollers and high-position rollers gradually increases along the extending direction from one end to the other end of the water filtration conveyor.

8. The slag discharge method of the TBM slag discharge device according to any one of claims 1 to 7, characterized in that: include: Step 1: The TBM main machine belt conveyor transports the soil through the collecting hopper to the water filter conveyor to complete the initial water filtering; Step 2: The water filter conveyor further transports the preliminarily filtered soil to the special-shaped guide hopper of the twin-screw conveyor. At the same time, the soil moisture content W at the discharge end of the water filter conveyor and the conveying speed V of the water filter conveyor are measured by the near-infrared moisture tester in the special-shaped guide hopper. 料 Calculate the feed rate V of the improver in the improver feed hopper 改良 , add improver; Step 3: The twin-screw conveyor transports the slag and improver mixture to the straight conveyor, and then transports it to the transport vehicle, or uses other transport devices to transport it to the transport vehicle.

9. The slag discharging method according to claim 8, characterized in that: The soil moisture content W at the discharge end of the water filter conveyor in step 2 and the conveying speed V of the water filter conveyor 料 , Twin screw conveyor conveying speed V 螺杆 and the feed rate V of the improver 改良 The relationship is as follows: The soil moisture content W at the discharge end of the water filter conveyor is ≤ 25%, and the feed rate of the improver is V 改良 = (conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ×K) ×C1, where C1 is 0.15~0.32; The soil moisture content at the discharge end of the water filter conveyor is 25%<W<60%, and the feed rate of the improver is V 改良 = (conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ×K) ×C2, where C2 is 0.33~0.43; The soil moisture content W at the discharge end of the water filter conveyor is ≥ 60%, and the feed rate of the improver is V 改良 = (conveying speed of water filter conveyor V 料 +Conveying speed V of twin screw conveyor 螺杆 ×K) ×C3, where C3 is 0.44~0.57; The value of K is 0.2~0.4.

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