Earth pressure balance shield muck in-situ solidification system

Abstract

The utility model relates to the technical field of shield tunnel engineering, in particular to an earth pressure balance shield muck in-situ solidification system. The system comprises a spiral conveyor, a belt conveyor, a spiral conveying device, a vertical conveying device and a curing agent storage tank, the spiral conveyor is arranged at the muck output end of the earth pressure balance shield machine; a belt conveyor is arranged at one end, far away from the earth pressure balance shield machine, of the spiral conveyor; a spiral conveying device is arranged at the end, away from the spiral conveyor, of the belt conveyor. A vertical conveying device is arranged at the end, away from the belt conveyor, of the spiral conveying device. A soil inlet butted with the spiral conveying device is formed in the lower end of the vertical conveying device, and a soil outlet butted with external transfer equipment is formed in the upper end of the vertical conveying device; the curing agent storage tank is connected with the spiral conveying device. According to the utility model, the problems of high investment cost, large occupied area and low muck treatment efficiency in the traditional muck solidification treatment mode can be solved, and the reutilization of muck resources is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield tunnel engineering technical field, concretely relates to a soil pressure balance shield muck in situ solidification system. BACKGROUND

[0002] The shield muck is mostly fine particle, and the water content is higher, and compared with the muck produced by drilling and blasting and other mechanical excavation methods, the harm is greater. The traditional muck removal mode generally is that the shield muck is transported to the muck bucket of electric car through the belt conveyor first, secondly, the electric car is driven to the muck removal well mouth, then, the muck bucket is vertically hoisted by the gantry crane, and the muck is poured into the ground muck pool, then, the muck is loaded into the dump truck by the excavator, and finally, the dump truck is transported to the designated muck disposal field and is stacked in the open air. Although the traditional muck removal mode can achieve the purpose of muck removal, but there are a series of disadvantages. Specifically as follows: first, because the foaming agent is usually added in the shield tunneling process, the foaming agent can increase the flow performance of the muck, and the transportation difficulty is great, secondly, with the large-scale development of rail transit, the muck stacking site is seriously insufficient, and the muck removal efficiency and construction progress are seriously affected, thirdly, in the rainy season, the foaming agent will flow out with rainwater, and pollute the surrounding water and soil environment, and finally, the shield muck has high water content and poor stability, and if direct stacking is not handled, it is easy to develop into a safety hazard.

[0003] The traditional muck solidification and disposal mode is to arrange a complete set of muck solidification and disposal equipment on the ground, and the solidification and disposal mode has a series of disadvantages. Specifically as follows: first, the investment cost is high, because the solidification and disposal mode needs to build muck pool and sedimentation tank, and needs to purchase agitator and solidifying agent storage tank etc., secondly, the equipment occupies large area, and the shield project is generally carried out in the urban area, and the space is relatively small, so that the equipment can only be arranged on the surrounding rented land, and the related procedures are complex, the cost is high, and the transportation cost is increased, thirdly, the muck treatment efficiency is low, and the process from the shield muck to the preparation of solidified soil is long, and fourthly, the muck stacking is difficult to solidify and stir. Therefore, the research on the solidification and treatment of shield muck has important social and economic benefits.

[0004] In summary, it is necessary to develop a soil pressure balance shield muck in situ solidification system to solve the problems of high investment cost, large area and low muck treatment efficiency in the traditional muck solidification and disposal mode. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a soil pressure balance shield muck in situ solidification system, and the specific technical scheme is as follows:

[0006] The earth pressure balance shield muck in-situ solidification system comprises a screw conveyor, a belt conveyor, a screw conveying device, a vertical conveying device and a curing agent storage tank; the screw conveyor is arranged at the muck output end of the earth pressure balance shield machine; the belt conveyor is arranged at the end of the screw conveyor away from the earth pressure balance shield machine; the screw conveying device is arranged at the end of the belt conveyor away from the screw conveyor; the vertical conveying device is arranged at the end of the screw conveying device away from the belt conveyor; the earth inlet is arranged at the lower end of the vertical conveying device and is connected with the screw conveying device, and the earth outlet is arranged at the upper end of the vertical conveying device and is connected with the external transfer equipment; the curing agent storage tank is connected with the screw conveying device.

[0007] Optionally, the vertical conveying device further comprises a first housing, a first driving member, an annular conveying belt and a plurality of material buckets; the first housing is vertically arranged; the annular conveying belt is vertically arranged in the first housing and is connected with the inner wall of the first housing through rollers at both ends; the material buckets are arranged on the annular conveying belt at intervals; the first driving member is arranged in the first housing and is connected with one of the rollers at the output end.

[0008] Optionally, the vertical conveying device further comprises a guide chute; the guide chute is arranged on the outer end of the earth outlet in the outlet direction of the earth outlet.

[0009] Optionally, the screw conveying device comprises a second housing, a second driving member, a stirring rod and a plurality of stirring blades; the second housing is arranged in the horizontal direction; the stirring rod is arranged in the second housing in the horizontal direction; the stirring blades are arranged on the stirring rod at intervals; the output end of the second driving member is connected with the stirring rod.

[0010] Optionally, the curing agent storage tank is communicated with the second housing through a pipeline; a flow regulating valve is arranged on the pipeline; the flow regulating valve comprises an electromagnetic valve.

[0011] Optionally, the earth pressure balance shield muck in-situ solidification system further comprises a support rod; the top of the support rod is connected with the bottom of the second housing, and the bottom of the support rod is connected with the ground in the shield tunnel; the support rod is in a plurality and is arranged at intervals.

[0012] Optionally, the earth pressure balance shield muck in-situ solidification system further comprises a connecting and fixing member; the belt conveyor is connected with the top surface in the shield tunnel through the connecting and fixing member.

[0013] Optionally, the belt conveyor is arranged in a U-shaped structure in the conveying section passing through the shield starting shaft.

[0014] Optionally, the earth pressure balance shield tunnel muck in-situ solidification system further comprises automatic weighing components; the automatic weighing components are arranged below the belt conveyor and the screw conveying device.

[0015] Optionally, the earth pressure balance shield tunnel muck in-situ solidification system further comprises a first anti-falling baffle, a second anti-falling baffle and a third anti-falling baffle; the first anti-falling baffle is arranged at the end of the conveying direction of the screw conveyor; the second anti-falling baffle is arranged at the front end of the conveying direction of the belt conveyor; and the third anti-falling baffle is arranged at the front end of the conveying direction of the screw conveying device.

[0016] The technical scheme of the utility model has at least the following beneficial effects:

[0017] The earth pressure balance shield tunnel muck in-situ solidification system provided by the utility model can solve the problems of high investment cost, large land occupation and low muck treatment efficiency in the traditional muck solidification treatment mode, and realizes the reuse of muck resources.

[0018] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated herein for purposes of explanation and are not intended to limit the application. In the drawings:

[0020] Figure 1 is a front view of an earth pressure balance shield tunnel muck in-situ solidification system in an embodiment;

[0021] Figure 2 is a structural schematic view of a vertical conveying device (a guide chute is not shown in the figure, and the black arrow direction in the figure represents the flow direction of the solidified muck);

[0022] Figure 3 is a structural schematic view of a screw conveying device (only a stirring rod and stirring blades are shown in the figure);

[0023] Figure 4is a structural schematic view of a belt conveyor in a U-shaped structure passing through a conveying section of a shield launching shaft (the black dashed arrow direction in the figure represents the shield tunneling direction, and the black solid arrow direction in the figure represents the muck transportation direction);

[0024] Wherein, 1, screw conveyor, 2, belt conveyor, 3, screw conveying device, 3.1, second shell, 3.2, stirring rod, 3.3, stirring blade, 4, vertical conveying device, 4.1, soil inlet, 4.2, soil outlet, 4.3, first shell, 4.4, ring conveyor belt, 4.5, material hopper, 4.6, guide chute, 5, curing agent storage tank, 5.1, pipeline, 6, support rod, 7, connecting and fixing part, A, self-unloading muck truck, B, shield launching shaft. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0026] Embodiment:

[0027] Referring to Figure 1 A soil pressure balance shield muck in-situ curing system, comprising a screw conveyor 1, a belt conveyor 2, a screw conveying device 3, a vertical conveying device 4 and a curing agent storage tank 5; the screw conveyor 1 is arranged at the muck output end of the soil pressure balance shield machine; the soil pressure balance shield machine is arranged in an underground shield tunnel; the belt conveyor 2 is arranged at one end of the screw conveyor 1 away from the soil pressure balance shield machine; the screw conveying device 3 is arranged at one end of the belt conveyor 2 away from the screw conveyor 1; the vertical conveying device 4 is arranged at one end of the screw conveying device 3 away from the belt conveyor 2; a soil inlet 4.1 is arranged at the lower end of the vertical conveying device 4 and is connected with the screw conveying device 3, and a soil outlet 4.2 is arranged at the upper end of the vertical conveying device 4 and is connected with external transfer equipment (such as a self-unloading muck truck A); the curing agent storage tank 5 is arranged on the ground and is connected with the screw conveying device 3.

[0028] The vertical conveying device 4 further comprises a first housing 4.3, a first driving member (such as a motor, not shown in the figure), an annular conveying belt 4.4, and a plurality of material buckets 4.5; the first housing 4.3 is vertically arranged; the annular conveying belt 4.4 is vertically arranged in the first housing 4.3, and both ends thereof are connected with the inner wall of the first housing 4.3 through rollers; each of the material buckets 4.5 is arranged on the annular conveying belt 4.4 in a spaced manner; and the first driving member is arranged in the first housing 4.3, and the output end thereof is connected with one of the rollers.

[0029] The vertical conveying device 4 further comprises a guide chute 4.6; the guide chute 4.6 is welded on the outer end of the unearthing opening 4.2 in the outlet direction of the unearthing opening 4.2, so as to facilitate the guiding of the solidified sludge to the transfer equipment.

[0030] The spiral conveying device 3 comprises a second housing 3.1, a second driving member (such as a motor, not shown in the figure), a stirring rod 3.2, and a plurality of stirring blades 3.3 (specifically, spiral blades); the second housing 3.1 is arranged in a horizontal direction; the stirring rod 3.2 is arranged in the second housing 3.1 in a horizontal direction; each of the stirring blades 3.3 is arranged on the stirring rod 3.2 in a spaced manner; and the output end of the second driving member is connected with the stirring rod 3.2.

[0031] The solidifying agent storage tank 5 is communicated with the second housing 3.1 through a pipeline 5.1; a flow regulating valve (not shown in the figure) is arranged on the pipeline 5.1; the flow regulating valve is an electromagnetic valve, which facilitates the real-time adjustment of the flow of the solidifying agent and ensures the solidification effect of the sludge.

[0032] The earth pressure balance shield sludge in-situ solidification system further comprises a support rod 6; the top of the support rod 6 is welded with the bottom of the second housing 3.1, and the bottom of the support rod 6 is connected with the ground in the shield tunnel; the number of the support rods 6 is multiple, and the support rods 6 are arranged in a spaced manner.

[0033] The earth pressure balance shield sludge in-situ solidification system further comprises a connecting and fixing component 7 (such as a connecting rod); the belt conveyor 2 is connected with the top surface (such as the top of the segment in the shield tunnel or the top plate of the station hall layer) in the shield tunnel through the connecting and fixing component 7.

[0034] The belt conveyor 2 is arranged in a U-shaped structure in the conveying section passing through the shield starting shaft B, so as to avoid affecting the vertical hoisting of the segments and other materials.

[0035] The earth pressure balance shield muck in-situ solidification system further comprises automatic weighing components (such as automatic weighing machines, not shown in the figure); the automatic weighing components are arranged below the belt conveyor 2 and the screw conveying device 3; the automatic weighing component arranged below the belt conveyor 2 is convenient for weighing the weight of the muck before solidification; the automatic weighing component arranged below the screw conveying device 3 is convenient for weighing the weight of the muck in solidification, and further convenient for monitoring whether the weight of the solidifying agent flowing out of the solidifying agent storage tank 5 meets the standard.

[0036] The earth pressure balance shield muck in-situ solidification system further comprises a first material falling prevention baffle (not shown in the figure), a second material falling prevention baffle (not shown in the figure) and a third material falling prevention baffle (not shown in the figure); the first material falling prevention baffle is arranged at the end of the conveying direction of the screw conveyor 1; the second material falling prevention baffle is arranged at the front end of the conveying direction of the belt conveyor 2; and the third material falling prevention baffle is arranged at the front end of the conveying direction of the screw conveying device 3.

[0037] The operation process of the earth pressure balance shield muck in-situ solidification system is as follows:

[0038] Step 1: the muck generated by the earth pressure balance shield tunneling machine is transmitted to the belt conveyor 2 through the screw conveyor 1;

[0039] Step 2: the muck is conveyed by the belt conveyor 2 and is unloaded in the screw conveying device 3;

[0040] Step 3: the solidifying agent is conveyed into the screw conveying device 3 from the solidifying agent storage tank 5, the muck and the solidifying agent are fully stirred and uniformly mixed by the second driving member driving the stirring rod 3.2 and the stirring blade 3.3, so that the muck is solidified; then, the solidified muck is conveyed to the vertical conveying device 4;

[0041] Step 4: the solidified muck is conveyed to the transfer equipment by the vertical conveying device 4; and then, the solidified muck is transported to a muck disposal site or used as a roadbed filler by the transfer equipment.

[0042] The above only describes preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An in-situ solidification system for earth pressure balance shield tunnel excavation soil, characterized in that, The system includes a screw conveyor (1), a belt conveyor (2), a screw conveyor device (3), a vertical conveyor device (4), and a curing agent storage tank (5); the screw conveyor (1) is located at the soil output end of the earth pressure balance shield machine; the belt conveyor (2) is located at the end of the screw conveyor (1) away from the earth pressure balance shield machine; the screw conveyor device (3) is located at the end of the belt conveyor (2) away from the screw conveyor (1); the vertical conveyor device (4) is located at the end of the screw conveyor device (3) away from the belt conveyor (2); an inlet (4.1) is located at the lower end of the vertical conveyor device (4) to connect with the screw conveyor device (3), and an outlet (4.2) is located at the upper end to connect with external transfer equipment; the curing agent storage tank (5) is connected to the screw conveyor device (3).

2. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 1, characterized in that, The vertical conveying device (4) further includes a first housing (4.3), a first driving member, an annular conveyor belt (4.4), and a plurality of hoppers (4.5); the first housing (4.3) is arranged vertically; the annular conveyor belt (4.4) is arranged vertically inside the first housing (4.3), and its two ends are respectively connected to the inner wall of the first housing (4.3) through rollers; each of the hoppers (4.5) is spaced apart on the annular conveyor belt (4.4); the first driving member is arranged inside the first housing (4.3), and its output end is connected to one of the rollers.

3. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 1, characterized in that, The vertical conveying device (4) further includes a guide chute (4.6); the guide chute (4.6) is arranged on the outer end of the soil outlet (4.2) along the outlet direction of the soil outlet (4.2).

4. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 1, characterized in that, The spiral conveying device (3) includes a second housing (3.1), a second driving member, a stirring rod (3.2), and a plurality of stirring blades (3.3); the second housing (3.1) is arranged in a horizontal direction; the stirring rod (3.2) is arranged in a horizontal direction inside the second housing (3.1); each of the stirring blades (3.3) is spaced apart on the stirring rod (3.2); the output end of the second driving member is connected to the stirring rod (3.2).

5. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 4, characterized in that, The curing agent storage tank (5) is connected to the second outer shell (3.1) through a pipeline (5.1); a flow regulating valve is provided on the pipeline (5.1); the flow regulating valve includes a solenoid valve.

6. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 4, characterized in that, It also includes support rods (6); the top of the support rods (6) is connected to the bottom of the second outer shell (3.1), and the bottom of the support rods (6) is connected to the ground inside the shield tunnel; there are multiple support rods (6) and they are spaced apart.

7. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 1, characterized in that, It also includes a connecting and fixing component (7); the belt conveyor (2) is connected to the top surface inside the shield tunnel through the connecting and fixing component (7).

8. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 1, characterized in that, The belt conveyor (2) is configured with a U-shaped structure in the conveying section passing through the shield tunneling starting shaft.

9. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to any one of claims 1-8, characterized in that, It also includes an automatic weighing component; an automatic weighing component is provided below both the belt conveyor (2) and the screw conveyor (3).

10. The in-situ solidification system for earth pressure balance shield tunnel excavation soil according to claim 9, characterized in that, It also includes a first anti-drop baffle, a second anti-drop baffle and a third anti-drop baffle; the first anti-drop baffle is located at the end of the conveying direction of the screw conveyor (1); the second anti-drop baffle is located at the front end of the conveying direction of the belt conveyor (2); and the third anti-drop baffle is located at the front end of the conveying direction of the screw conveyor (3).

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