CN212389339U - TBM for drainage gallery of pumped storage power station - Google Patents

Abstract

The utility model relates to the technical field of tunnel construction, concretely relates to TBM for pumped storage power station drainage corridor, including TBM host computer, belt conveyor, TBM back supporting and bracket, the TBM host computer includes front shield, thrust cylinder and support shield, and front shield rear end upper portion is equipped with finger type shield, and the thrust cylinder front end is connected with main drive box rear portion, and the rear end is connected with the front panel of support shield, and the front shield includes the front shield upper shield body that connects on the main drive box through telescopic cylinder and the front shield lower shield body that links together with the main drive box, is equipped with the support boots system in the support; the belt conveyor is used for conveying the muck to the muck conveying assembly; the bracket comprises a starting bracket arranged in the assembling hole and a receiving bracket arranged in the receiving hole, and the starting bracket and the receiving bracket are both provided with pushing oil cylinders. The utility model discloses rational in infrastructure, compact, the turning ability is strong, the construction is stable, and is efficient, can reduce the construction risk.

Description

TBM for drainage gallery of pumped storage power station

Technical Field

The utility model relates to a tunnel construction technical field, concretely relates to TBM for pumped storage power station drainage corridor.

Background

Under general conditions, the drainage gallery of the pumped storage power station is a tunnel with a small hole diameter and a small curve radius, the tunnel is short in length, small in curvature radius and large in construction and excavation difficulty. The traditional drainage gallery construction is carried out by adopting a mode of reinforcing the stratum and manually perforating and blasting, has the characteristics of complex approval procedures, high safety risk, low construction efficiency, high cost and the like, and needs to find safe, reliable and economic mechanized and intelligent equipment to complete the drainage gallery construction.

The TBM (rock tunnel boring machine) is a highly mechanized and automated excavation supporting complete equipment which integrates the technologies of machinery, electronics, hydraulic pressure, laser, control and the like by adopting a shield method. The TBM technology adopts a hob cutter to cut rock without explosive blasting, adopts automatic control for all, has faster engineering progress, and is a construction technology which can reduce engineering pollution and greatly save engineering investment.

The TBM equipment is self-integrated complex equipment of machine, electricity and liquid, has large structural volume and needs a proper starting base when in starting and receiving. The open TBM performs tunneling and step-changing operations by means of a supporting boot, a shield and a rear support; the shield type TBM depends on the pipe piece to carry out step-changing tunneling operation. The open type and shield type TBM are limited by the structure and the step changing mode, the turning capability is weak, and the small curve turning tunneling construction of the drainage gallery is difficult to realize.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that above-mentioned exists with not enough, provide a TBM for pumped storage power station drainage corridor, the utility model has the advantages of reasonable design, compactness, the strong, the equipment construction of turning ability is stable, efficient, can reduce the construction risk.

In order to realize the purpose of the utility model, the technical proposal of the utility model is that:

a TBM for a drainage corridor of a pumped storage power station comprises a TBM host, a belt conveyor, a TBM rear support and a bracket, wherein the TBM host comprises a cutter head, a front shield, a propulsion oil cylinder and a support shield, a main drive and a slag collecting hopper are arranged in the front shield, a finger-shaped shield is arranged at the upper part of the rear end of the front shield, the front end of the propulsion oil cylinder is connected with the rear part of a main drive box body, the rear end of the propulsion oil cylinder is connected with a front panel of the support shield, the front shield comprises a front shield upper shield body and a front shield lower shield body, the front shield upper shield body is connected to the upper part of the main drive box body through a telescopic oil cylinder, the front shield lower shield body is connected with the main drive box body together, the front shield upper shield body can move up and down relative to the main drive box body, a supporting shoe system is arranged in the support shield, and the supporting shoe system; the belt conveyor is used for conveying the muck to the muck conveying assembly; the rear part of the TBM main machine is connected with the rear part of the TBM in a matching way, and the rear part of the TBM in a matching way comprises a multi-section pulley; the bracket comprises a starting bracket arranged in the assembling hole and a receiving bracket arranged in the receiving hole, wherein both the starting bracket and the receiving bracket are provided with pushing oil cylinders, and the pushing oil cylinders are used for pushing the TBM host machine to move on the bracket.

Further, in the TBM for the drainage gallery of the pumped storage power station, the thrust oil cylinders are divided into four groups, namely an upper group, a lower group, a left group and a right group, each group is assembled by two oil cylinders, and the opening of each group of oil cylinders is backwards arranged in a V shape.

Further, in the TBM for the drainage gallery of the pumped storage power station, the belt conveyor is an integrated belt conveyor, and the integrated belt conveyor penetrates through the head and the tail of TBM equipment.

Further, in the above TBM for the drainage corridor of the pumped storage power station, the originating tray and the receiving tray are the same device.

Further, in foretell pumped storage power station TBM for corridor, the sediment fill is located the blade disc inside, and fixed mounting is at the front end face of main drive box, the blade disc is panel-type blade disc, and the inside swift current sediment board that disposes of blade disc.

Furthermore, in the TBM for the pumped storage power station drainage corridor, each pulley matched behind the TBM is divided into an upper layer and a lower layer, TBM matching equipment is arranged on a platform at the lower part of the pulley, a belt conveyor and a pipeline are arranged at the upper part of the pulley, a steel pipe is matched at the bottom of the pulley, and the pulley is pulled by a host to slide on the ground to advance.

Further, in the TBM for the drainage gallery of the pumped storage power station, the muck transportation assembly comprises a shuttle-type mine car, a slag transferring belt conveyor and an earthwork vehicle, and the shuttle-type mine car adopts a side slag discharging mode.

The utility model discloses a pumped storage power station is TBM's for drainage corridor beneficial effect:

the TBM for the pumped storage power station drainage gallery adopts the structural design of a tailless shield, an auxiliary push-free oil cylinder and a semi-telescopic shield, has compact and reasonable structural design, and has short host length compared with the existing double-shield type; compared with an open type machine type, the front shield and the support shield are connected by adopting a ball-head oil cylinder, so that the flexibility is enhanced, and the turning capability is enhanced;

the TBM for the drainage corridor of the pumped storage power station provides stable counter-force support for the forward movement of the TBM through the structural design of the telescopic oil cylinder, the upper shield body and the lower shield body of the front shield, and the telescopic oil cylinder extends out to enable the upper shield body and the lower shield body of the front shield to compress the tunnel wall in the step changing process of the TBM, so that the friction force generated by the shield and the rock wall ensures the smooth step changing operation;

the TBM for the drainage gallery of the pumped storage power station adopts an integrated belt conveyor, has less parts, simple maintenance, no slag hole lap joint, compact structure and space saving;

the starting bracket of the utility model is arranged in the assembling hole in the front of the starting hole, and the assembled host is pushed into the starting hole chamber by the pushing oil cylinder, so that the limited space can be effectively utilized, and the assembly operation can be carried out orderly;

the utility model discloses a pumped storage power station is TBM for drainage corridor can realize automatic mechanized excavation, and non-broken geology drainage corridor can one shot forming, need not secondary lining and bottom and backfill, greatly reduced intensity of labour, reduced energy resource consumption, practice thrift the cost, its equipment construction is stable simultaneously, and is efficient, and the effective control stratum disturbance reduces the construction risk, the utility model discloses the TBM equipment and attached corollary equipment of application can realize quick, the circulation excavation of a plurality of drainage corridors, the utility model has the advantages of reasonable design, filled the blank that little curve drainage corridor adopted the TBM excavation well, have efficiently, the risk is little, characteristics such as economic environmental protection.

Drawings

Fig. 1 is the overall structure of the TBM for the pumped storage power station drainage corridor according to the embodiment of the utility model.

Fig. 2 is a schematic structural diagram of a TBM host.

Fig. 3 is a schematic sectional structure view a-a of fig. 2.

Fig. 4 is a schematic sectional structure view of B-B of fig. 2.

Fig. 5 is a schematic cross-sectional structure view of C-C of fig. 2.

Figure 6 is according to the utility model discloses a pumped storage power station is TBM's for drainage corridor constructional schematic diagram of the position of slagging tap.

Fig. 7 is a schematic sectional view of the structure of fig. 6D-D.

Fig. 8 is a schematic perspective view of a bracket according to an embodiment of the present invention.

In the figure: the device comprises a TBM host machine 1, a main driving box 11, a slag collecting hopper 12, a cutter head 13, a front shield 14, a telescopic oil cylinder 141, an upper front shield body 142, a lower front shield body 143, a 15-type protective shield, a propulsion oil cylinder 16, a support shield 17, a shoe supporting system 18, a shoe supporting system 181, a shoe supporting cylinder 182, a driving motor 19, a TBM rear matching system 2, an integrated belt conveyor 3, a bracket 4, a muck conveying assembly 5, a shuttle car 51, a slag turning belt conveyor 52, an earthwork vehicle 53, a starting hole 6, an assembly hole 7, a rail 8 and a traffic hole 9.

Detailed Description

The TBM for the drainage gallery of the pumped storage power station according to the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-8, the embodiment discloses a TBM for a drainage corridor of a pumped storage power station, which comprises a TBM host, a belt conveyor, a TBM rear support and a bracket, wherein the TBM host comprises a cutter head, the front shield comprises a front shield upper shield body connected to the upper part of the main driving box body through a telescopic oil cylinder and a front shield lower shield body connected with the main driving box body, the front shield upper shield body can move up and down relative to the main driving box body, a supporting shoe system is arranged inside the supporting shield, the supporting shoe system comprises supporting shoes and supporting shoe oil cylinders for driving the supporting shoes to move, the supporting shoe oil cylinders extend out, and the supporting shoe panels can support and tightly press the wall of the hole; the belt conveyor is arranged below the slag collecting hopper and is used for conveying slag to the slag conveying assembly; the rear part of the TBM main machine is connected with the rear part of the TBM main machine in a matching way, and the rear part of the TBM main machine comprises a multi-section pulley; the bracket comprises an originating bracket arranged in an assembly hole and a receiving bracket arranged in a receiving hole, in the embodiment, the assembly hole is positioned in front of the originating hole, the receiving hole is positioned at the intersection position of a traffic hole and a tunneling tunnel, the originating bracket and the receiving bracket are both provided with tracks, the originating bracket and the receiving bracket are both provided with a pushing oil cylinder and an auxiliary pump station, the pushing oil cylinder is connected with the auxiliary pump station and used for pushing a TBM host to move on the bracket, and the originating bracket and the receiving bracket are formed by connecting multiple sections and used for equipment assembly and receiving.

In this embodiment, preferably, the thrust cylinders are divided into four groups, i.e., an upper group, a lower group, a left group and a right group, each group is assembled by two cylinders, and an opening of each group is arranged backwards in a V shape. The front shield and the support shield in the TBM equipment are connected by adopting the ball-head oil cylinder, and compared with an open type machine type, the flexibility is enhanced, and the turning capability is enhanced.

In this embodiment, preferably, the belt conveyor is an integrated belt conveyor, the integrated belt conveyor runs through the TBM equipment from head to tail, a front end and tail roller of the integrated belt conveyor is located in the cutter head and below the slag collecting hopper, and a rear end driving roller is located at the tail of the pulley and extends out of the pulley. Compared with the belt conveyor which is divided into two sections on the existing TBM equipment, the belt conveyor has the advantages of less parts, simple maintenance, no slag notch overlapping, compact structure and space saving.

In this embodiment, the originating bracket and the receiving bracket are preferably the same device, which can be recycled, reducing the manufacturing and construction costs.

In this embodiment, specifically, the slag collecting hopper is located inside the cutter head, and is fixedly mounted on the front end face of the main drive box, the cutter head is a panel cutter head, a disc-shaped hob is configured for cutting rock, a chute is configured inside the cutter head, and the rock crushed by the hob enters the slag collecting hopper through the chute and falls to the belt conveyor to be conveyed backwards.

In the embodiment, each pulley matched behind the TBM is divided into an upper layer and a lower layer, TBM matching equipment is arranged on a platform at the lower part of the pulley, a belt conveyor and a pipeline are arranged at the upper part of the pulley, a steel pipe is matched at the bottom of the pulley, and the pulley is pulled by a main machine to slide on the ground to advance.

In this embodiment, preferably, the dregs transportation subassembly contains shuttle car, changes sediment belt feeder and earthwork car, and the shuttle car adopts the lateral part mode of slagging tap, and the convenient and fast that slags tap.

The method for constructing the drainage corridor of the pumped storage power station by using the TBM comprises the following steps:

(1) assembling and debugging: after the TBM is transported to the underground, equipment assembly is carried out on an initial bracket, after equipment assembly and debugging are finished, a pushing oil cylinder pushes the TBM to enter an initial grotto and start tunneling operation, and after a host enters the hole, a slag tapping track and a slag soil transportation assembly are arranged outside the hole and used for system slag tapping;

(2) tunneling and deslagging: the TBM starts to tunnel after entering a starting tunnel cavern and having construction conditions, the excavation operation of the cavern is carried out, the slag conveyed by the belt conveyor is transferred to an earthwork vehicle through a shuttle mine car and a slag transferring belt conveyor, and the earthwork vehicle is used for transporting the slag out of the tunnel, and the specific operation flow is as follows:

a supporting shoe oil cylinder of the supporting shoe system extends out to enable the supporting shoe to tightly support the wall of the hole, a driving motor of a main drive drives a cutter head to rotate, a propulsion oil cylinder extends out to push a front shield, a finger-type protective shield, the cutter head, the main drive and a slag collecting hopper to move forwards, the cutter head rotates to cut broken rocks, slag soil is scraped by the cutter head and falls into the slag collecting hopper and is transported to a shuttle-type mine car by an integrated belt conveyor, the shuttle-type mine car transports the slag soil to a slag belt conveyor and further transports the slag belt conveyor to a earthwork vehicle, and a TBM rear sleeve is matched with the TBM to provide power in the tunneling process;

in the tunneling process, the TBM adjusts the direction to realize turning by adjusting the stroke difference of the grouped cylinders of the propulsion cylinder, for example, when turning left, the stroke of the right side cylinder minus the stroke of the left side cylinder is a positive value, and when turning right, the stroke of the right side cylinder is a negative value. When the heading is carried out, the stroke of the lower propelling oil cylinder and the stroke of the upper oil cylinder are reduced to positive values;

after the propelling oil cylinder extends out of a set length, the step changing operation is started, the telescopic oil cylinder extends out to enable the upper shield body and the lower shield body of the front shield to tightly press the wall of the hole, the shoe supporting oil cylinder is recovered to drive the shoe supporting to be recovered, and the propelling oil cylinder is recovered to drive the support shield, the shoe supporting system and the rear matching to move forwards together;

after the stroke of the propelling oil cylinder is recovered, a shoe supporting oil cylinder of the shoe supporting system extends out to enable the shoe supporting to tightly support the wall of the hole, and a telescopic oil cylinder is recovered to enable the shield body on the front shield not to tightly press the wall of the hole;

and (5) after the step is changed, starting a new-stroke tunneling operation, and repeating the tunneling and step changing operations until the tunneling is completed.

(3) And (3) station crossing: after the TBM tunneling section is finished, the tunnel is opened, the cutter head, the front shield, the main drive and the slag collecting hopper are pushed to the receiving bracket by the pushing oil cylinder, and the pushing oil cylinder on the receiving bracket pushes the TBM host machine into the starting chamber of the next tunneling section for tunneling;

(4) receiving: and after the mileage tunneling of the TBM tunnel is finished, the tunnel is taken out, the machine is disassembled on the receiving bracket and the tunnel chamber is pulled out by the tractor, so that the tunneling of a drainage gallery is finished.

In this embodiment, specifically, in the step (3), when the support shield does not exit the tunnel, the pushing cylinder on the receiving bracket pushes the front shield to move the TBM; after the front shield enters the tunnel, the pushing oil cylinder pushes the support shield to move the TBM.

In this embodiment, specifically, the initiating cradle needs to be removed after the TBM enters the hole, and the receiving cradle needs to be removed after the TBM is dismantled.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments without departing from the concept of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention.

Claims (7)

1. The utility model provides a TBM for pumped storage power station drainage corridor which characterized in that includes:

the TBM host comprises a cutter head, a front shield, a propulsion oil cylinder and a support shield, wherein a main drive and a slag collecting hopper are arranged in the front shield, a finger-shaped protective shield is arranged at the upper part of the rear end of the front shield, the front end of the propulsion oil cylinder is connected with the rear part of a main drive box body, the rear end of the propulsion oil cylinder is connected with a front panel of the support shield, the front shield comprises a front shield upper shield body and a front shield lower shield body, the front shield upper shield body is connected with the upper part of the main drive box body through a telescopic oil cylinder, the front shield lower shield body is connected with the main drive box body, the front shield upper shield body can move up and down relative to the main drive box body, a shoe supporting system is arranged in the support shield, and the shoe supporting system comprises a supporting shoe and;

a belt conveyor for conveying the muck to the muck transport assembly;

the TBM rear matching device is connected to the rear part of the TBM main machine and comprises a multi-section pulley; and

the bracket comprises a starting bracket arranged in the assembling hole and a receiving bracket arranged in the receiving hole, wherein both the starting bracket and the receiving bracket are provided with jacking oil cylinders, and the jacking oil cylinders are used for jacking the TBM host machine to move on the bracket.

2. The TBM for the drainage corridor of the pumped storage power station according to claim 1, wherein the thrust cylinders are divided into four groups, namely an upper group, a lower group, a left group and a right group, each group is assembled by two cylinders, and each group is backwards arranged in a V shape.

3. The TBM for the pumped-storage power station drainage corridor of claim 1, wherein the belt conveyor is an integrated belt conveyor which extends through the TBM equipment end-to-end.

4. The TBM for the pumped-storage power station drain corridor of claim 1, wherein the origination bracket and the receiving bracket are the same device.

5. The TBM for the drainage corridor of the pumped storage power station according to claim 1, wherein the slag collecting hopper is positioned inside a cutter head and is fixedly installed on the front end surface of the main driving box body, the cutter head is a panel-type cutter head, and a slag chute is arranged inside the cutter head.

6. The TBM for the drainage corridor of the pumped storage power station as claimed in claim 1, wherein each trolley matched behind the TBM is divided into an upper layer and a lower layer, TBM matched equipment is arranged on a lower platform of the trolley, a belt conveyor and a pipeline are arranged on the upper part of the trolley, and a steel pipe is matched at the bottom of the trolley and is pulled by a main machine to slide on the ground.

7. The TBM for the drainage corridor of the pumped storage power station according to claim 1, wherein the muck transportation assembly comprises a shuttle car, a slag belt conveyor and an earthwork vehicle, and the shuttle car adopts a side deslagging mode.

Images