CN117759248A - System and method for tunneling large-diameter vertical shaft well completion machine - Google Patents

Abstract

The invention discloses a large-diameter shaft well-forming machine tunneling system and a method, wherein the large-diameter shaft well-forming machine tunneling system comprises the following components: the double-layer metal cylinder wall assembly is provided with an annular track and comprises an inner cylinder, an outer cylinder and a supporting frame, a spacing cavity is formed between the inner cylinder and the outer cylinder, and the supporting frame is arranged in the spacing cavity; a lifting system; the swing type rock drilling mechanical arm comprises a base, a rotating seat, an upper arm, a lower arm and a rotary rock breaking tool bit; the water supply and slag discharge power supply system comprises a system main body, a water supply and slag discharge power supply pipeline, an auxiliary slag discharge baffle and a slag discharge water supply branch pipe. The large-diameter shaft well-forming machine tunneling system can realize the mechanized and automatic rapid excavation and well-forming of the large-diameter shaft, and has the advantages of high construction efficiency, strong adaptability, high flexibility and the like.

Description

System and method for tunneling large-diameter vertical shaft well completion machine

Technical Field

The invention relates to the technical field of shaft tunneling construction, in particular to a large-diameter shaft well forming machine tunneling system and a large-diameter shaft well forming machine tunneling method.

Background

Along with the development and utilization of underground space, the excavation construction of large-scale chambers in the fields of water and electricity, traffic, mining, military and the like is more and more, and the volume and construction difficulty of engineering are also increased. Shafts are widely used in various underground works as a kind of communication passage into an underground space.

The shaft excavation mode in the related art adopts a sinking method, and has the advantages of low well forming speed, low mechanization degree and large construction amount.

For this reason, partly the shaft adopts the rig to carry out the tunnelling, although can improve the degree of mechanization to a certain extent, nevertheless all to the shaft of diameter less, for the shaft of diameter great, the complexity of required rig increases doubly for the tunnelling of major diameter shaft. For example, in the shaft drilling machine of the related art, a plurality of excavating bits are arranged along the radial direction, and when the excavating diameter is increased, additional bits and matched driving and slag discharging devices are required, so that the complexity of the drilling machine is increased by times.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the large-diameter shaft well-forming machine tunneling system which can realize the mechanized and automatic rapid excavation and well-forming of the large-diameter shaft and has the advantages of high construction efficiency, strong adaptability, high flexibility and the like.

The invention also provides a tunneling method of the large-diameter vertical shaft well completion machine.

To achieve the above object, an embodiment according to a first aspect of the present invention proposes a large diameter shaft mill tunnelling system comprising: the double-layer metal cylinder wall assembly is provided with an annular track extending along the circumferential direction of the double-layer metal cylinder wall assembly, the double-layer metal cylinder wall assembly comprises an inner cylinder, an outer cylinder and a supporting frame, the inner cylinder is arranged on the radial inner side of the outer cylinder, the inner cylinder and the outer cylinder are arranged at intervals to form a spacing cavity between the inner cylinder and the outer cylinder, and the supporting frame is arranged in the spacing cavity and is respectively connected with the inner cylinder and the outer cylinder; the lifting system is connected with the double-layer metal cylinder wall assembly and drives the double-layer metal cylinder wall assembly to lift; the swing type rock drilling mechanical arm comprises a base, a rotating seat, an upper arm, a lower arm, a rotary rock breaking tool bit, a revolution driving device, a rotation driving device, a swing driving device, a telescopic driving device and a tool bit driving device, wherein the base can be arranged on the annular track in a movable manner along the circumferential direction of the double-layer metal cylinder wall assembly, the rotating seat is rotatably arranged on the base, the rotating axis is oriented in the vertical direction, the upper arm is arranged on the rotating seat in a swingable manner, the swing axis is oriented in the horizontal direction, the lower arm is telescopically arranged on the upper arm, the rotary rock breaking tool bit is arranged on the lower arm, a part of the swing type rock drilling mechanical arm is positioned in the interval cavity, the part of the swing driving device extends downwards out of the interval cavity, the base is driven to move on the annular track, the rotation driving device drives the rotating seat to rotate relative to the base, the swing driving device drives the upper arm to swing, the telescopic driving device drives the lower arm, and the rotary rock breaking tool bit is driven to rotate; the water supply, slag and power supply system comprises a system main body, a water supply, slag and power supply pipeline, an auxiliary slag discharging baffle and a slag discharging water supply branch pipe, wherein the system main body is arranged on the ground, the water supply, slag and power supply pipeline is respectively connected with the system main body and the swing type rock drilling mechanical arm, the auxiliary slag discharging baffle is arranged outside the rotary rock breaking tool bit, and the slag discharging water supply branch pipe is respectively communicated with the auxiliary slag discharging baffle and the water supply, slag discharging and power supply pipeline.

According to the large-diameter vertical shaft well-forming machine tunneling system, the large-diameter vertical shaft can be mechanically and automatically rapidly excavated and formed, and the large-diameter vertical shaft well-forming machine tunneling system has the advantages of being high in construction efficiency, strong in adaptability, high in flexibility and the like.

In addition, the large-diameter shaft well completion tunneling system according to the embodiment of the invention can also have the following additional technical features:

according to one embodiment of the invention, the inner barrel and the outer barrel are coaxially arranged.

According to one embodiment of the invention, the double-layer metal cylinder wall assembly comprises a plurality of mutually spliced sub-cylinder sections in the axial direction.

According to one embodiment of the invention, the swing type rock drilling mechanical arm is multiple and is arranged at intervals along the circumferential direction of the double-layer metal cylinder wall assembly.

According to one embodiment of the invention, the lifting system comprises a plurality of suspension lifting devices arranged on the ground and circumferentially spaced around the wellhead.

According to one embodiment of the invention, the bit drive is provided in at least one of the upper arm and the lower arm.

According to one embodiment of the invention, the swing driving device is a swing hydraulic lever pivotally connected to the rotating base and the upper arm, respectively.

According to one embodiment of the invention, the telescopic driving device is a telescopic hydraulic rod, and the telescopic hydraulic rod is respectively connected with the upper arm and the lower arm.

According to one embodiment of the invention, the revolution driving device comprises a driving motor, a gear and a rack, wherein the gear is in transmission connection with the driving motor, the driving motor is arranged on the base, and the rack is arranged on the annular track.

An embodiment according to a second aspect of the present invention proposes a large diameter shaft logging method employing a large diameter shaft logging system according to an embodiment of the first aspect of the present invention, comprising the steps of:

s1, hardening a field at a wellhead of a vertical shaft, locking the wellhead with concrete, constructing an originating foundation pit, and arranging a system main body;

s2, arranging the lifting system around the wellhead, arranging the inner cylinder and the outer cylinder in the originating foundation pit, installing a swinging type rock drilling mechanical arm on the annular track, connecting the water supply, slag discharge and power supply pipeline, and installing the support frame;

s3, digging by using the swing type rock drilling mechanical arm to form a peripheral annular pit, driving the base to move on the annular track through the revolution driving device in the process, driving the rotating seat to rotate relative to the base through the rotation driving device, driving the upper arm to swing through the swing driving device, driving the lower arm to stretch and retract through the telescopic driving device, discharging slag through the water supply and slag discharge power supply system, and adjusting the water level height in the originating foundation pit;

s4, after the preset depth is excavated, the lifting system drives the double-layer metal cylinder wall assembly to descend to the bottom of the peripheral annular pit, the lifting system is locked, and the core foundation pit in the peripheral annular pit is excavated;

s5, repeating the steps S3 and S4 until the excavation of the vertical shaft is completed;

s6, dismantling the swing type rock drilling mechanical arm, performing bottom sealing operation, installing a reinforcement cage in the double-layer metal cylinder wall assembly, and performing concrete pouring to form a steel cylinder concrete structure.

According to the large-diameter shaft well-forming machine tunneling method, the large-diameter shaft well-forming machine tunneling system can realize the mechanical and automatic rapid excavation and well-forming of the large-diameter shaft, and has the advantages of high construction efficiency, strong adaptability, high flexibility and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a large diameter shaft-well-forming machine tunneling system according to an embodiment of the present invention.

Fig. 2 is a schematic partial structure of a large diameter shaft-well-forming machine driving system according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a swing type rock drilling robot of a large diameter shaft-cutter tunneling system according to an embodiment of the present invention.

Fig. 4 is a flow chart of a large diameter shaft logging method according to an embodiment of the invention.

Reference numerals: the large-diameter shaft well completion tunneling system 1, a double-layer metal cylinder wall assembly 10, an inner cylinder 11, an outer cylinder 12, a supporting frame 13, a spacing cavity 14, an annular track 15, a lifting system 20, a suspension lifting device 21, a swinging type rock drilling mechanical arm 30, a base 31, a rotating seat 32, an upper arm 33, a lower arm 34, a rotating rock breaking tool bit 35, a revolution driving device 36, a rotation driving device 37, a swinging driving device 38, a telescopic driving device 39, a water supply and slag discharging power supply system 40, a system main body 41, a water supply and slag discharging power supply pipeline 42, an auxiliary slag discharging baffle 43 and a slag discharging water supply branch pipe 44.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

A large diameter shaft well completion tunneling system 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, a large-diameter shaft-forming machine tunneling system 1 according to an embodiment of the present invention includes a double-layered metal cylinder wall assembly 10, a lifting system 20, a swing type rock drilling robot arm 30, and a water supply and slag discharge power supply system 40.

The double-layer metal cylinder wall assembly 10 is provided with an annular track 15 extending along the circumferential direction of the double-layer metal cylinder wall assembly 10.

The double-layer metal cylinder wall assembly 10 comprises an inner cylinder 11, an outer cylinder 12 and a supporting frame 13, wherein the inner cylinder 11 is arranged on the radial inner side of the outer cylinder 12, the inner cylinder 11 and the outer cylinder 12 are arranged at intervals to form a spacing cavity 14 between the inner cylinder 11 and the outer cylinder 12, and the supporting frame 13 is arranged in the spacing cavity 14 and is respectively connected with the inner cylinder 11 and the outer cylinder 12.

The lifting system 20 is connected with the double-layer metal cylinder wall assembly 10 and drives the double-layer metal cylinder wall assembly 10 to lift.

The swing type rock drilling machine arm 30 includes a base 31, a rotating base 32, an upper arm 33, a lower arm 34, a rotary rock breaking bit 35, a revolution driving device 36, a rotation driving device 37, a swing driving device 38, a telescopic driving device 39 and a bit driving device (up-down direction is shown by arrow in the figure), the base 31 is movably provided on the annular track 15 in the circumferential direction of the double-layer metal cylinder wall assembly 10, the rotating base 32 is rotatably provided on the base 31 with a rotation axis oriented in the vertical direction, the upper arm 33 is swingably provided on the rotating base 32 with a swing axis oriented in the horizontal direction, the lower arm 34 is retractably provided on the upper arm 33, and the rotary rock breaking bit 35 is provided on the lower arm 34.

A part of the oscillating rock drilling robot 30 is located in the compartment 14 and a part extends downwards out of the compartment 14.

The revolution driving device 36 drives the base 31 to move on the annular track 15, the rotation driving device 37 drives the rotating seat 32 to rotate relative to the base 31, the swing driving device 38 drives the upper arm 33 to swing, the telescopic driving device 39 drives the lower arm 34 to stretch and retract, and the tool bit driving device drives the rotary rock breaking tool bit 35 to rotate.

The water supply, slag removal and power supply system 40 comprises a system main body 41, a water supply, slag removal and power supply pipeline 42, an auxiliary slag removal baffle 43 and a slag removal water supply branch pipe 44, wherein the system main body 41 is arranged on the ground, the water supply, slag removal and power supply pipeline 42 is respectively connected with the system main body 41 and the swing type rock drilling mechanical arm 30, the auxiliary slag removal baffle 43 is arranged outside the rotary rock breaking tool bit 35, and the slag removal and water supply branch pipe 44 is respectively communicated with the auxiliary slag removal baffle 43 and the water supply, slag removal and power supply pipeline 42. The system main body 41 may include a power supply device, a water supply pump, a slag discharge pump, etc.

Specifically, when the shaft is driven, the swing type rock drilling mechanical arm 30 is firstly utilized to excavate to form a peripheral annular pit, in the process, the revolution driving device 36 drives the base 31 to move on the annular track 15, the rotation driving device 37 drives the rotation seat 32 to rotate relative to the base 31, the swing driving device 38 drives the upper arm 33 to swing, and the telescopic driving device 39 drives the lower arm 34 to stretch and retract, so that the super-excavation function is realized.

After the excavation is performed to a preset depth, the lifting system 20 drives the double-layer metal cylinder wall assembly 10 to descend to the bottom of the peripheral annular pit, the lifting system 20 is locked, and other excavating equipment is adopted to perform large-area high-efficiency excavation on the core foundation pit in the peripheral annular pit, such as a drilling and blasting method, mechanical rock drilling and the like.

Repeating the steps until the excavation of the vertical shaft is completed.

And finally, dismantling the swing type rock drilling mechanical arm 30, performing bottom sealing operation, installing a reinforcement cage in the double-layer metal cylinder wall assembly 10, and performing concrete pouring to form a steel cylinder concrete structure.

According to the large-diameter shaft well completion tunneling system 1 provided by the embodiment of the invention, the annular track 15 and the revolution driving device 36 are arranged, so that the swinging type rock drilling mechanical arm 30 can move along the circumferential direction of the double-layer metal cylinder wall assembly 10, and the excavation of a rock layer around the periphery of a shaft is facilitated.

By providing the inner barrel 11 and the outer barrel 12, the formation of the spacing chamber 14 is facilitated, a part of the swing type rock drilling mechanical arm 30 is conveniently arranged in the spacing chamber 14, and concrete can be poured in the double-layer metal barrel wall assembly 10 after excavation so as to form a steel barrel concrete structure, so that the shaft is conveniently well-formed.

By providing the supporting frame 13, the supporting frame 13 can support the inner tube 11 and the outer tube 12, and the relative positions of the inner tube 11 and the outer tube 12 can be maintained.

Through setting up operating system 20, can utilize operating system 20 to drive double-deck metal section of thick bamboo wall subassembly 10 to rise, can make double-deck metal section of thick bamboo wall subassembly 10 and swing rock drilling arm 30 can follow the deep gradual decline of tunnelling, the excavation of completion shaft from top to bottom of being convenient for.

By making the swing type rock drilling machine arm 30 comprise a base 31, a rotating seat 32, an upper arm 33 and a lower arm 34, wherein the base 31 is movably arranged on the annular track 15 along the circumferential direction of the double-layer metal cylinder wall assembly 10, the rotating seat 32 is rotatably arranged on the base 31, the rotating axis is oriented along the vertical direction, the upper arm 33 is swingably arranged on the rotating seat 32, the swinging axis is oriented along the horizontal direction, and the lower arm 34 is retractably arranged on the upper arm 33, so that the movement of the rotary rock breaking cutter head 35 in multiple degrees of freedom can be realized, the flexibility of the rotary rock breaking cutter head 35 is improved, the excavating range of the swing type rock drilling machine arm 30 is enlarged, and the super-excavating function is conveniently realized.

By positioning a portion of the swing type rock drilling machine arm 30 in the partition 14 and extending a portion of the swing type rock drilling machine arm 30 downward out of the partition 14, the swing type rock drilling machine arm 30 can conveniently excavate a rock and soil layer, the swing angle of the swing type rock drilling machine arm 30 is ensured, and the phenomenon that the swing type rock drilling machine arm 30 cannot swing smoothly when the distance between the double-layer metal cylinder wall assembly 10 and the pit bottom is too low is avoided.

By providing the water supply and slag removal power supply system 40, the water supply and slag removal power supply system 40 can be utilized to supply water, power and remove slag to the swing type rock drilling mechanical arm 30, and the water level can be controlled through adjustment of water supply efficiency and slag removal efficiency.

The auxiliary slag discharging baffle 43 is arranged to collect the excavated rock slag, slurry and the like, and the excavated rock slag, slurry and the like are conveyed to the ground through the slag discharging water supply branch pipe 44 and the water supply slag discharging power supply pipeline 42.

That is, the large-diameter shaft-forming machine tunneling system 1 can utilize the swing type rock drilling mechanical arm 30 to excavate the outer layer annular pit first, then adopts other modes to excavate the core foundation pit in the double-layer metal cylinder wall assembly 10, compared with a drilling machine in the related art, only the diameter of the double-layer metal cylinder wall assembly 10 is required to be increased when the excavation diameter is increased, and the swing type rock drilling mechanical arm 30 is not required to be additionally increased in the radial direction, so that devices such as matched driving and deslagging are omitted, the large-diameter shaft-forming machine tunneling system 1 can be suitable for the excavation of the large-diameter shaft, the applicability of the large-diameter shaft-forming machine tunneling system 1 is improved, the space in the core foundation pit excavation is large, the large-area high-efficiency excavation mode can be adopted, and the outer layer annular pit and the core foundation pit are excavated respectively, so that the tunneling efficiency can be greatly improved.

And, the double-layer metal cylinder wall assembly 10 sinks synchronously in the process of excavation, realizes that excavation and support are carried out synchronously, guarantees construction reliability, and the double-layer metal cylinder wall assembly 10 can also assist in forming a steel drum concrete cylinder wall structure after excavation, improves compressive strength, shear strength, plasticity, toughness, shock resistance and shock resistance of a shaft wall, and is convenient for the large-diameter shaft well-forming machine tunneling system 1 to be suitable for different engineering geological conditions.

Therefore, the large-diameter shaft well-forming machine tunneling system 1 can realize the mechanized and automatic rapid excavation and well forming of the large-diameter shaft, and has the advantages of high construction efficiency, strong adaptability, high flexibility and the like.

A large diameter shaft well logging system 1 according to an embodiment of the invention is described below with reference to the accompanying drawings.

In some embodiments of the present invention, as shown in fig. 1-4, a large diameter shaft logging system 1 according to an embodiment of the present invention includes a double metal drum wall assembly 10, a lifting system 20, a swing type rock drilling robot arm 30, and a water supply and slag removal power supply system 40.

Specifically, as shown in fig. 1 and 2, the inner cylinder 11 and the outer cylinder 12 are coaxially disposed. This allows the thickness of the compartment 14 to be kept uniform, ensures a uniform wall thickness after casting, and facilitates the circumferential movement of the swing type rock drilling machine arm 30.

Advantageously, as shown in fig. 1, the double metal cartridge wall assembly 10 comprises a plurality of mutually spliced sub-cartridge segments in the axial direction. Specifically, the number of the sub-cylinder sections can be adjusted according to the depth of the vertical shaft, so that the axial length of the double-layer metal cylinder wall assembly 10 can be adjusted, and the sub-cylinder sections can be connected and sealed in a welding, lap joint or other mode. This may facilitate adjustment of the length of the double metal cartridge wall assembly 10.

More advantageously, as shown in fig. 1 and 2, the oscillating drilling machine arms 30 are plural and spaced apart along the circumference of the double metal cylinder wall assembly 10. Specifically, the swing type rock drilling robot 30 may be 2 to 4. Thus, a plurality of swing type rock drilling machine arms 30 can be utilized to synchronously excavate a plurality of positions in the circumferential direction of the double-layer metal cylinder wall assembly 10, and the overall excavation efficiency is improved.

It will be appreciated by those skilled in the art that the number of swing type rock drilling robots 30 is much smaller than the number of tools required for the drilling machine in the related art. The construction of the large diameter shaft well completion system 1 is simpler and easier to implement than the drilling rigs of the related art.

Fig. 1-3 illustrate a large diameter shaft logging system 1 according to some examples of the invention. The lifting system comprises a plurality of suspension lifting devices 21, and the plurality of suspension lifting devices 21 are arranged on the ground and circumferentially spaced around the wellhead. Specifically, the plurality of suspension/lifting devices 21 are provided at equal intervals in the circumferential direction of the wellhead. In this way, the plurality of suspension lifting devices 21 can be used to drive the double-layer metal cylinder wall assembly 10 to lift, so that the stress of the double-layer metal cylinder wall assembly 10 is more uniform.

Advantageously, the head drive means are provided in at least one of the upper arm 33 and the lower arm 34. Thus, the space inside the upper arm 33 and the lower arm 34 can be fully utilized, the space utilization rate can be improved, and the cutter head driving device can be protected by utilizing the upper arm 33 and the lower arm 34.

Specifically, as shown in fig. 3, the swing drive device 38 is a swing hydraulic lever pivotally connected to the rotary base 32 and the upper arm 33, respectively. This can drive the upper arm 33 to swing by hydraulic pressure, ensuring the driving force to the upper arm 33.

More specifically, as shown in fig. 3, the telescopic driving means 39 is a telescopic hydraulic rod connected to the upper arm 33 and the lower arm 34, respectively. This allows the lower arm 34 to be hydraulically driven to expand and contract, thereby ensuring the driving force for the lower arm 34.

Alternatively, as shown in fig. 3, the revolution driving device 36 includes a driving motor, a gear and a rack, the gear is in transmission connection with the driving motor, the driving motor is provided on the base, and the rack is provided on the endless track 15. This facilitates axial movement of the swing type drilling robot 30 along the double metal cylinder wall assembly 10.

Specifically, the upper arm 33 has a maximum swing position that swings to a maximum angle with respect to the vertical direction within a swing range, and the angle of the upper arm 33 with respect to the vertical direction at the maximum swing position is 45 degrees or more. This may facilitate ensuring the swing range of the swing type rock drilling robot arm 30.

The rotary rock breaking tool bit 35 is provided with a plurality of milling tools which are arranged at intervals along the circumferential direction of the rotary rock breaking tool bit 35. This facilitates the excavation of rock and soil by rotation of the rotary rock breaking bit 35.

The annular rail 15 includes an inner ring provided on the outer surface of the inner cylinder 11 and an outer ring provided on the inner surface of the outer cylinder 12. This may facilitate the setting of the endless track 15, and the setting of the oscillating rock drilling machine arm 30 on the endless track 15.

The operation of the large diameter shaft machine tunnelling system 1 according to an embodiment of the invention is described below with reference to fig. 1-3.

Hardening the site at the wellhead of the vertical shaft, locking the wellhead with concrete, and constructing an originating foundation pit. A system main body 41 and the like are arranged.

A plurality of suspension lifting devices 21 are arranged around the wellhead. The inner cylinder 11 and the outer cylinder 12 with the annular track 15 are installed inside the foundation pit. A plurality of swing type rock drilling robots 30 are mounted on the endless track 15. A water supply and slag discharge power supply pipeline 42 and a slag discharge water supply branch pipe 44 are connected. A support bracket 13 is installed between the inner cylinder 11 and the outer cylinder 12.

The system is started, and the rotary rock breaking cutter head 35 rotates. The deslagging mode can flexibly select a slurry pump pumping mode or a mud-water separation mode for deslagging according to hydrogeological conditions. The non-drainage operation mode is selected in the double-layer metal cylinder wall assembly 10 to keep pressure balance, and the conditions of peripheral geological settlement, tunnel face instability and the like are kept, and the adjustment of the water level in the foundation pit is controlled by a water supply pump and a slag discharge system of the water supply slag discharge power supply system 40.

In the pit excavation process, the swing type rock drilling mechanical arm 30 is driven by the revolution driving device 36 to circumferentially move along the annular track 15, so that excavation of a part of sector areas in the circumferential direction is realized. The rotation driving device 37 drives the upper arm 33 to rotate for 360 degrees so as to meet the excavation of the outer annular pit, and the excavation of the foundation pit with a certain depth range is realized by controlling the extension and retraction of the lower arm 34. The above mechanisms are mutually matched to realize the super-digging function. The combined excavation of a plurality of groups of mechanical arms can be carried out according to the engineering progress requirement, so that the construction progress is greatly improved.

After the double-layer metal cylinder wall assembly 10 is excavated to a certain depth, the lifting system 20 drives the double-layer metal cylinder wall assembly 10 to slowly descend to the bottom of the outer annular pit, the lifting system 20 is locked, and after the sub-pipe section and the supporting frame 13 are additionally arranged on the sub-pipe section at the upper end, the swing type rock drilling mechanical arm 30 performs excavation of the next stage.

And excavating a core foundation pit on the inner side of the double-layer metal cylinder wall assembly 10. Because the space in the center of the large-diameter vertical shaft is larger, the earthwork is larger, and the high-efficiency excavation and slag discharging operation can be performed by flexibly selecting the modes of drilling and blasting, mechanical rock drilling and the like, so that the excavation efficiency is greatly improved.

For the deslagging operation of the slurry, the slurry and the rock slag are pumped to the ground for circulation through an auxiliary deslagging baffle 43 and a deslagging water supply branch pipe 44 in the process of excavation. The deslagging mode can be flexibly combined and selected according to geological hydrologic conditions, and the deslagging mode adopts a mode of combining a slurry pump pumping and a mud-water separation system for deslagging aiming at a water-rich stratum. The underground water level balance is kept by adopting non-drainage operation in the construction engineering well, and the phenomena of peripheral geological settlement, tunnel face instability and the like are prevented. The dry slag is discharged through the channel where the rotary joint is located in a grab bucket mode for arid and water-deficient areas.

After tunneling to the bottom of the foundation pit, the swing type rock drilling mechanical arm 30 is dismantled for bottom sealing operation. And installing a reinforcement cage in the double-layer metal cylinder wall assembly 10, and performing concrete pouring to form a steel cylinder concrete structure.

The following describes a large diameter shaft well completion tunneling method according to an embodiment of the present invention. The large diameter shaft logging system tunneling method according to the embodiment of the present invention includes the large diameter shaft logging system 1 according to the above-described embodiment of the present invention.

The method comprises the following steps:

s1, hardening a field at a wellhead of a vertical shaft, locking the wellhead with concrete, constructing an originating foundation pit, and arranging a system main body;

s2, arranging the lifting system around the wellhead, arranging the inner cylinder and the outer cylinder in the originating foundation pit, installing a swinging type rock drilling mechanical arm on the annular track, connecting the water supply, slag discharge and power supply pipeline, and installing the support frame;

s3, digging by using the swing type rock drilling mechanical arm to form a peripheral annular pit, driving the base to move on the annular track through the revolution driving device in the process, driving the rotating seat to rotate relative to the base through the rotation driving device, driving the upper arm to swing through the swing driving device, driving the lower arm to stretch and retract through the telescopic driving device, discharging slag through the water supply and slag discharge power supply system, and adjusting the water level height in the originating foundation pit;

s4, after the preset depth is excavated, the lifting system drives the double-layer metal cylinder wall assembly to descend to the bottom of the peripheral annular pit, the lifting system is locked, and the core foundation pit in the peripheral annular pit is excavated;

s5, repeating the steps S3 and S4 until the excavation of the vertical shaft is completed;

s6, dismantling the swing type rock drilling mechanical arm, performing bottom sealing operation, installing a reinforcement cage in the double-layer metal cylinder wall assembly, and performing concrete pouring to form a steel cylinder concrete structure.

According to the large-diameter shaft well completion tunneling method, the large-diameter shaft well completion tunneling system 1 can realize the mechanized and automatic rapid excavation and well completion of the large-diameter shaft, and has the advantages of high construction efficiency, strong adaptability, high flexibility and the like.

Other constructions and operations of the large diameter shaft logging system 1 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A large diameter shaft machine tunneling system, comprising:

the double-layer metal cylinder wall assembly is provided with an annular track extending along the circumferential direction of the double-layer metal cylinder wall assembly, the double-layer metal cylinder wall assembly comprises an inner cylinder, an outer cylinder and a supporting frame, the inner cylinder is arranged on the radial inner side of the outer cylinder, the inner cylinder and the outer cylinder are arranged at intervals to form a spacing cavity between the inner cylinder and the outer cylinder, and the supporting frame is arranged in the spacing cavity and is respectively connected with the inner cylinder and the outer cylinder;

the lifting system is connected with the double-layer metal cylinder wall assembly and drives the double-layer metal cylinder wall assembly to lift;

the swing type rock drilling mechanical arm comprises a base, a rotating seat, an upper arm, a lower arm, a rotary rock breaking tool bit, a revolution driving device, a rotation driving device, a swing driving device, a telescopic driving device and a tool bit driving device, wherein the base can be arranged on the annular track in a movable manner along the circumferential direction of the double-layer metal cylinder wall assembly, the rotating seat is rotatably arranged on the base, the rotating axis is oriented in the vertical direction, the upper arm is arranged on the rotating seat in a swingable manner, the swing axis is oriented in the horizontal direction, the lower arm is telescopically arranged on the upper arm, the rotary rock breaking tool bit is arranged on the lower arm, a part of the swing type rock drilling mechanical arm is positioned in the interval cavity, the part of the swing driving device extends downwards out of the interval cavity, the base is driven to move on the annular track, the rotation driving device drives the rotating seat to rotate relative to the base, the swing driving device drives the upper arm to swing, the telescopic driving device drives the lower arm, and the rotary rock breaking tool bit is driven to rotate;

the water supply, slag and power supply system comprises a system main body, a water supply, slag and power supply pipeline, an auxiliary slag discharging baffle and a slag discharging water supply branch pipe, wherein the system main body is arranged on the ground, the water supply, slag and power supply pipeline is respectively connected with the system main body and the swing type rock drilling mechanical arm, the auxiliary slag discharging baffle is arranged outside the rotary rock breaking tool bit, and the slag discharging water supply branch pipe is respectively communicated with the auxiliary slag discharging baffle and the water supply, slag discharging and power supply pipeline.

2. The large diameter shaft well completion tunneling system of claim 1 wherein the inner and outer drums are coaxially disposed.

3. The large diameter shaft logging system of claim 1 wherein said double metal cartridge wall assembly comprises a plurality of sub-cartridge segments axially spliced to one another.

4. The large diameter shaft well completion tunneling system of claim 1, wherein the plurality of swing type rock drilling machine arms are arranged at intervals along the circumference of the double-layer metal cylinder wall assembly.

5. A large diameter shaft boring system according to claim 1 wherein the lifting system comprises a plurality of suspension lifting devices disposed on the ground and circumferentially spaced about the wellhead.

6. A large diameter shaft boring system according to claim 1, wherein the bit drive is provided in at least one of the upper and lower arms.

7. A large diameter shaft boring system according to claim 1 wherein the swing drive is a swing lever pivotally connected to the swivel mount and the upper arm respectively.

8. The large diameter shaft well completion tunneling system of claim 1 wherein the telescoping drive is a telescoping hydraulic rod connected to the upper arm and the lower arm, respectively.

9. The large diameter shaft well completion tunneling system of claim 1, wherein the revolution driving device comprises a driving motor, a gear and a rack, the gear is in transmission connection with the driving motor, the driving motor is arranged on the base, and the rack is arranged on the annular track.

10. A method of large diameter shaft mill tunnelling, characterized by using a large diameter shaft mill tunnelling system according to any one of claims 1-9, comprising the steps of:

s1, hardening a field at a wellhead of a vertical shaft, locking the wellhead with concrete, constructing an originating foundation pit, and arranging a system main body;

s2, arranging the lifting system around the wellhead, arranging the inner cylinder and the outer cylinder in the originating foundation pit, installing a swinging type rock drilling mechanical arm on the annular track, connecting the water supply, slag discharge and power supply pipeline, and installing the support frame;

s3, digging by using the swing type rock drilling mechanical arm to form a peripheral annular pit, driving the base to move on the annular track through the revolution driving device in the process, driving the rotating seat to rotate relative to the base through the rotation driving device, driving the upper arm to swing through the swing driving device, driving the lower arm to stretch and retract through the telescopic driving device, discharging slag through the water supply and slag discharge power supply system, and adjusting the water level height in the originating foundation pit;

s4, after the preset depth is excavated, the lifting system drives the double-layer metal cylinder wall assembly to descend to the bottom of the peripheral annular pit, the lifting system is locked, and the core foundation pit in the peripheral annular pit is excavated;

s5, repeating the steps S3 and S4 until the excavation of the vertical shaft is completed;

s6, dismantling the swing type rock drilling mechanical arm, performing bottom sealing operation, installing a reinforcement cage in the double-layer metal cylinder wall assembly, and performing concrete pouring to form a steel cylinder concrete structure.