Super-large-diameter earth pressure muddy water multi-mode shield tunneling machine suitable for composite stratum

Abstract

The invention relates to the technical field of water conservancy projects, in particular to a super-large-diameter earth pressure muddy water multi-mode shield tunneling machine suitable for a composite stratum, which comprises a cutter head assembly and a shield body which are arranged at the operation end of a shield tunneling machine main body, and a longitudinal adjusting opening is formed in an end panel, close to the cutter head assembly, of the shield body; lateral adjusting guide rails of L-shaped structures are fixedly assembled on the two sides of the longitudinal adjusting opening, and spiral conveying equipment and slurry conveying equipment which are matched with the lateral adjusting guide rails are arranged in the shield body. According to the ultra-large-diameter earth pressure muddy water multi-mode shield tunneling machine suitable for the composite stratum, the one-machine-three-mode integrated design is adopted, so that the function integration degree is greatly improved, and the application scene range is very wide; the longitudinal adjusting opening is formed in the end face plate, close to the cutterhead assembly, of the shield body, the positions of the spiral conveying equipment and the slurry conveying equipment are controlled through the lateral adjusting guide rails of the L-shaped structures on the two sides of the longitudinal adjusting opening, and therefore the equipment is more compact in structure and more reasonable in layout.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy engineering, and particularly relates to a super-large-diameter earth pressure mud multi-mode shield machine suitable for composite strata. BACKGROUND

[0002] Water conservancy engineering tunnels (such as water diversion tunnels and pumped storage power stations) often pass through extremely complex strata, and the following problems may occur: strong geological discontinuity: water-rich sand layers (permeability coefficient > 10-3 m / s), high-pressure fracture zones (water inflow > 500 m 3 / h), karst development zones and high ground stress hard rock (uniaxial compressive strength > 150 MPa) alternately appear within a short distance; super-large diameter challenge: when the tunnel diameter is greater than or equal to 12 meters, the traditional single-mode shield is prone to sudden gushing (mud mode is better) in water-rich unstable strata, the earth pressure mode is more efficient in homogeneous clay layers, and the TBM mode is required in long hard rock sections to reduce tool wear.

[0003] At present, neither single-mode nor double-mode shields can simultaneously cope with water-rich sand layers and hard rock, resulting in very limited applicability of the equipment. SUMMARY

[0004] The technical problem to be solved by the present application is that neither single-mode nor double-mode shields can simultaneously cope with water-rich sand layers and hard rock, resulting in very limited applicability of the equipment.

[0005] The technical scheme adopted by the present application to solve the technical problem is a super-large-diameter earth pressure mud multi-mode shield machine suitable for composite strata, comprising a cutterhead assembly and a shield body installed at the operating end of the shield machine main body, a longitudinal adjustment opening is formed on the end face plate of the shield body near the cutterhead assembly, L-shaped lateral adjustment guide rails are fixedly assembled on both sides of the longitudinal adjustment opening, and a spiral conveying device and a mud conveying device are arranged inside the shield body and matched with the lateral adjustment guide rails.

[0006] A longitudinal electric control lifting assembly for controlling the spiral conveying device is arranged inside the longitudinal section of the lateral adjustment guide rail, and a transverse electric control translation assembly for controlling the mud conveying device is arranged inside the transverse section of the lateral adjustment guide rail.

[0007] The spiral conveying device comprises an electric control adjustment shell controlled to lift by the longitudinal electric control lifting assembly, a telescopic inclined material guide pipe movably installed inside the electric control adjustment shell, and a spiral material conveying rod installed inside the telescopic inclined material guide pipe.

[0008] The electric control adjustment shell comprises an inner side lifting shell, a rotating material guide shell movably installed at the opening position on the left side of the inner side lifting shell, a side-hung motor for controlling adjustment of the rotating material guide shell, inner threaded lifting blocks fixedly installed on both sides of the inner side lifting shell, and a flexible sealing cover installed on the right side of the inner side lifting shell.

[0009] The mud conveying device comprises a mud conveying pipe, an external translation frame fixed outside the mud conveying pipe, and internal threaded translation blocks fixed on both sides of the external translation frame.

[0010] A first flip closure cover plate for closing the longitudinal adjustment opening is hinged to the upper surface of the internal lifting cover, and a first overhead electric control support rod for controlling the first flip closure cover plate is hinged to the upper surface of the telescopic oblique material guide pipe.

[0011] A second flip closure cover plate for closing the longitudinal adjustment opening and a second overhead electric control support rod are hinged to the upper surface of the external translation frame.

[0012] A bottom flip sealing groove is formed in the bottom of the internal lifting cover.

[0013] An annular adjustment guide rail for assembling a rotating material guide cover is installed at the opening position on the left side of the internal lifting cover.

[0014] Embedded pressure sensors are installed on the surfaces of the first flip closure cover plate and the second flip closure cover plate.

[0015] The beneficial effects of the present application are:

[0016] (1) The super-large-diameter soil pressure mud-water multi-mode shield machine suitable for composite strata of the present application adopts an integrated design of one machine and three modes, greatly improving the functional integration degree and making the range of application scenarios very extensive.

[0017] (2) The longitudinal adjustment opening is formed on the end panel of the shield body near the cutter head assembly, and the positions of the screw conveying device and the mud conveying device are controlled through the lateral adjustment guide rails of the L-shaped structure on both sides of the longitudinal adjustment opening, making the structure of the device more compact and the layout more reasonable.

[0018] (3) Automatic switching between the mud-water mode, the soil pressure mode, and the TBM mode is performed based on real-time hydrological data, making the control more accurate and the operation more convenient.

[0019] (4) The three modes are used to cope with different scenarios, and real-time switching is possible, greatly improving the efficiency of the tunnel.

[0020] (5) The electric control adjustment cover shell is provided on the screw conveying device, which can be angle-adjusted according to the needs of the operation scene, making the anti-interference effect more excellent in different modes. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in conjunction with the drawings and examples.

[0022] Figure 1 is a structural schematic diagram of the mud-water mode of the present application.

[0023] Figure 2 is a structural schematic diagram of the earth pressure mode of the present application.

[0024] Figure 3 is a structural schematic diagram of the TBM mode of the present application.

[0025] Figure 4 is a structural schematic diagram of the lateral adjustment guide rail in the present application.

[0026] Figure 5 is a structural schematic diagram of the slurry conveying device in the present application.

[0027] Figure 6 is a structural schematic diagram of the screw conveying device in the present application.

[0028] Figure 7 is a structural schematic diagram of the internal structure of the screw conveying device in the present application. DETAILED DESCRIPTION

[0029] The present application will now be described in further detail with reference to the drawings. These drawings are simplified schematic diagrams and only show the basic structure of the present application in a schematic manner, and thus only show the components relevant to the present application.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 A super-large-diameter earth pressure slurry multi-mode shield machine suitable for composite strata is shown in the drawings, which comprises a cutterhead assembly 1 and a shield body 2 installed at the operating end of the shield machine body, a longitudinally arranged adjusting port 3 is formed on the end panel of the cutterhead assembly 1, L-shaped lateral adjustment guide rails 4 are fixedly assembled on both sides of the longitudinally arranged adjusting port 3, and screw conveying equipment 5 and slurry conveying equipment 6 are arranged inside the shield body 2 and matched with the lateral adjustment guide rails 4.

[0032] Stratum-mode intelligent matching logic:

[0033] Slurry mode: through the soil bin mud pressure real-time control system (pressure fluctuation ≤0.02MPa) stable water-rich sand layer / fracture zone face, prevent sudden gushing, slurry mode will be water-rich strata settlement control in ≤3mm (traditional soil pressure mode ≥10mm);

[0034] Soil pressure mode: close the slurry gate, enable screw conveyor torque adaptive control, optimize clay / soft rock strata discharge efficiency;

[0035] TBM mode: ① The main drive adopts double-reduction ratio reducer, using large reduction ratio in slurry and soil pressure mode to realize low speed and large torque; using small reduction ratio in TBM mode to realize high speed and low torque; ② Switching hard rock cutter head (roller cutter spacing ≤90mm) and starting rock slag stepless discharge device to reduce hard rock section cutter wear; ③ Adjusting the position of the screw conveyor to the center of the main drive. BM mode improves the efficiency of hard rock section by 40% (reduces cutter wear rate by 35%).

[0036] A cross-hole resistivity CT probe is arranged in front of the cutter head to predict the location of the solution cavity and automatically switch the slurry mode to balance the water pressure.

[0037] In order to cooperate with the lifting and translation adjustment, the longitudinal section of the lateral adjustment guide rail 4 is internally provided with a longitudinal electric control lifting assembly 41 for controlling the screw conveying device 5, and the transverse section of the lateral adjustment guide rail 4 is internally provided with a transverse electric control translation assembly 42 for controlling the slurry conveying device 6.

[0038] The longitudinal electric control lifting assembly 41 and the transverse electric control translation assembly 42 are both composed of an adjusting screw rod and an adjusting motor controlled by the adjusting screw rod.

[0039] In order to cooperate with the screw adjustment of the material, the screw conveying device 5 includes an electric control adjustment shell 51 controlled by the longitudinal electric control lifting assembly 41 to lift, a telescopic inclined material guide pipe 52 movably installed inside the electric control adjustment shell 51, and a screw material conveying rod 53 installed inside the telescopic inclined material guide pipe 52.

[0040] When the electric control adjustment shell 51 is lifted along the longitudinal section of the lateral adjustment guide rail 4 by the longitudinal electric control lifting assembly 41, the telescopic inclined material guide pipe 52 is controlled to extend and retract.

[0041] In order to cooperate with the rotation adjustment, the electric control adjustment shell 51 includes an inner lifting shell 511, a rotating material guide shell 512 movably installed at the left opening position of the inner lifting shell 511, a side-hung motor 513 for controlling the adjustment of the rotating material guide shell 512, inner threaded lifting blocks 514 fixedly installed on both sides of the inner lifting shell 511, and a flexible sealing shell 515 installed on the right side of the inner lifting shell 511.

[0042] The inner side lifting cover 511 is slidingly installed inside the longitudinal adjusting opening 3, and the longitudinal electric control lifting assembly 41 is screw-fitted with the inner screw lifting block 514, which is lifted along the longitudinal section of the lateral adjusting guide rail 4.

[0043] The side-hung motor 513 is fixed on the inner wall of the inner side lifting cover 511.

[0044] In order to cooperate with the mud conveying and translation adjustment, the mud conveying device 6 comprises a mud conveying pipe 61, an outer translation frame 62 fixed outside the mud conveying pipe 61, and inner screw translation blocks 63 fixed on both sides of the outer translation frame 62.

[0045] The transverse electric control translation assembly 42 is screw-fitted with the inner screw translation block 63, which drives the inner screw translation block 63 to perform translation adjustment along the transverse section of the lateral adjusting guide rail 4.

[0046] In order to cooperate with the closure and sealing of the longitudinal adjusting opening 3 at the upper end of the inner side lifting cover 511, the upper surface of the inner side lifting cover 511 is hinged with a first flip closure cover plate 7 for closing the longitudinal adjusting opening 3, and the upper surface of the telescopic obliquely placed guide pipe 52 is hinged with a first top electric control support rod 8 for controlling the first flip closure cover plate 7.

[0047] The extended end of the first top electric control support rod 8 is movably connected with the side surface of the first flip closure cover plate 7. The first top electric control support rod 8 is extended to control the first flip closure cover plate 7 to flip upward, so as to close the longitudinal adjusting opening 3 at the upper end.

[0048] In order to cooperate with the closure and sealing of the longitudinal adjusting opening 3 at the lower end of the inner side lifting cover 511, the upper surface of the outer translation frame 62 is hinged with a second flip closure cover plate 9 and a second top electric control support rod 10 for closing the longitudinal adjusting opening 3.

[0049] The extended end of the second top electric control support rod 10 is movably connected with the side surface of the second flip closure cover plate 9.

[0050] In order to cooperate with the second flip closure cover plate 9 to close the longitudinal adjusting opening 3, the bottom of the inner side lifting cover 511 is provided with a bottom flip sealing groove 516.

[0051] When the second top electric control support rod 10 is extended to control the upper end of the second flip closure cover plate 9 along the bottom flip sealing groove 516 to ensure the sealing of the upper end of the second flip closure cover plate 9.

[0052] In order to facilitate assembly and guide adjustment, the left side opening position of the inner side lifting cover 511 is provided with an annular adjusting guide rail 517 for assembling the rotating guide cover 512.

[0053] The rotary material guide cover 512 is inserted into the annular adjusting guide rail 517 through a mounting flange and is in driving connection with the side-hung motor 513, and the rotary material guide cover 512 is driven to rotate along the annular adjusting guide rail 517 by the side-hung motor 513.

[0054] In order to monitor the internal pressure at different positions in real time, the first and second flip closure cover plates 7 and 9 are both provided with embedded pressure sensors 11.

[0055] The pressure on the surfaces of the first and second flip closure cover plates 7 and 9 can be monitored by the embedded pressure sensors, so that the pressure change between the cutterhead assembly 1 and the shield 2 can be understood in real time, and the airtightness of the vertically arranged adjusting port 3 can also be understood according to the pressure change.

[0056] Based on the above ideal embodiments according to the present application, the above description can be varied and modified by relevant personnel without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A super-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground, comprising a cutterhead assembly (1) and a shield body (2) installed at the operation end of the main body of the shield machine, characterized in that: The shield body (2) is provided with a longitudinal adjusting opening (3) on the end panel of the cutter head assembly (1), and L-shaped lateral adjusting guide rails (4) are fixedly arranged on both sides of the longitudinal adjusting opening (3); the shield body (2) is internally provided with screw conveying equipment (5) and mud conveying equipment (6) matched with the lateral adjusting guide rails (4).

2. The super-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 1, characterized in that: The longitudinal section of the lateral adjusting guide rail (4) is internally provided with a longitudinal electric control lifting assembly (41) for controlling the screw conveying equipment (5), and the transverse section of the lateral adjusting guide rail (4) is internally provided with a transverse electric control translation assembly (42) for controlling the mud conveying equipment (6).

3. The super-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 2, characterized in that: The screw conveying equipment (5) comprises an electric control adjusting cover (51) controlled to lift by the longitudinal electric control lifting assembly (41), a telescopic inclined material guide pipe (52) movably mounted in the electric control adjusting cover (51), and a screw conveying rod (53) mounted in the telescopic inclined material guide pipe (52).

4. The super-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 3, characterized in that: The electric control adjusting cover (51) comprises an inner lifting cover (511), a rotating material guide cover (512) movably mounted at the opening position on the left side of the inner lifting cover (511), a side-hung motor (513) for controlling the adjustment of the rotating material guide cover (512), inner threaded lifting blocks (514) fixedly mounted on both sides of the inner lifting cover (511), and a flexible sealing cover (515) mounted on the right side of the inner lifting cover (511).

5. The super-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 1, characterized in that: The mud conveying equipment (6) comprises a mud conveying pipe (61), an outer translation frame (62) fixed on the outer side of the mud conveying pipe (61), and inner threaded translation blocks (63) fixed on both sides of the outer translation frame (62).

6. The super-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 4, characterized in that: A first top-mounted electric control support rod (8) for controlling the first flip closure cover plate (7) is hinged to the upper surface of the telescopic inclined material guide pipe (52).

7. The ultra-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 5, characterized in that: A second flip closure cover plate (9) and a second top-mounted electric control support rod (10) for closing the longitudinal adjusting opening (3) are hinged to the upper surface of the outer translation frame (62).

8. The ultra-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 4, characterized in that: A bottom flip sealing groove (516) is formed in the bottom of the inner lifting cover (511).

9. The ultra-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 4, characterized in that: An annular adjusting guide rail (517) for mounting the rotating material guide cover (512) is mounted at the opening position on the left side of the inner lifting cover (511).

10. The ultra-large diameter earth pressure slurry multi-mode shield machine suitable for composite ground according to claim 1, characterized in that: Embedded pressure sensors (11) are mounted on the surfaces of the first flip closure cover plate (7) and the second flip closure cover plate (9).

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