CN114033387A - Ultra-large-diameter deep well tunneling system with water operation and construction method - Google Patents
Ultra-large-diameter deep well tunneling system with water operation and construction method Download PDFInfo
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- CN114033387A CN114033387A CN202111310008.4A CN202111310008A CN114033387A CN 114033387 A CN114033387 A CN 114033387A CN 202111310008 A CN202111310008 A CN 202111310008A CN 114033387 A CN114033387 A CN 114033387A
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 230000005641 tunneling Effects 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 92
- 238000003801 milling Methods 0.000 claims abstract description 53
- 239000002002 slurry Substances 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 32
- 238000000926 separation method Methods 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 13
- 238000009412 basement excavation Methods 0.000 claims description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
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Abstract
The invention relates to an ultra-large diameter water-carrying operation deep well tunneling system, which comprises: the pipe piece is used for enclosing a well wall, and a steel blade is arranged at the lower end of the pipe piece at the lowest layer; the segment propulsion device comprises an annular base, wherein a plurality of pressure cylinders are uniformly arranged at the upper end of the annular base along the circumference through an annular beam and are used for applying pressure to the upper end of an upper-layer segment to push a lower-layer segment to move downwards so that the upper-layer segment and the lower-layer segment are sequentially butted to extend a well wall; the supporting mechanism is connected with the inner wall of the lowermost duct piece; the supporting mechanism is provided with a milling and digging mechanism and a slurry extracting mechanism through a rotary support, the digging radius of the milling and digging mechanism is adjustable, and the slurry extracting mechanism can lift relative to the supporting mechanism. The invention also relates to a construction method, which utilizes the segment propulsion device to uniformly apply pressure from the top of the deep well, ensures the verticality of the segment and the segment installation operation precision in the construction process, improves the construction quality, reduces the construction site area and reduces the cost.
Description
Technical Field
The invention relates to the technical field of deep well excavation, in particular to an ultra-large diameter water-carrying operation deep well tunneling system and a construction method.
Background
The underground space is developed and applied to a wide deep well excavation technology, and has important application in the fields of underground three-dimensional parking garages, subway construction starting wells, ventilation shafts of tunnels or subway pipe networks, urban sewage siphon pipelines, deep sea mining and the like.
In the prior art, deep well excavation mostly adopts a semi-mechanical manual construction operation mode, particularly, a large-diameter deep well with the diameter of more than 12 meters is mainly excavated by traditional manual excavation and is matched with a construction method that a cast-in-place or prefabricated segment shaft is placed by self weight or a steel strand, so that the problems of low automation degree, difficulty in controlling indexes such as vertical verticality of the deep well, poor construction operation safety and the like exist, and the phenomena of high comprehensive cost, difficulty in ensuring construction quality, long operation period, large construction site area and the like are caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an ultra-large diameter water-carrying operation deep well tunneling system and a construction method, and aims to solve the technical problem that the operation period is long because indexes such as the vertical perpendicularity of a deep well are difficult to control in the existing ultra-large diameter deep well tunneling construction process.
The technical scheme adopted by the invention is as follows:
an ultra-large diameter water-carrying operation deep well tunneling system, comprising:
the pipe piece is used for enclosing a well wall, and a steel blade is arranged at the lower end of the pipe piece at the lowest layer;
the segment pushing device comprises an annular base used for positioning the diameter of a deep well, wherein a plurality of pressure cylinders are uniformly arranged at the upper end of the annular base along the circumference through an annular beam and used for applying pressure to the upper end of an upper segment and pushing a lower segment to move downwards so that the upper segment and the lower segment are sequentially butted to extend a well wall;
the supporting mechanism is connected with the inner wall of the lowermost duct piece; the supporting mechanism is provided with a milling and digging mechanism and a slurry extracting mechanism through a rotary support, the digging radius of the milling and digging mechanism is adjustable, and the slurry extracting mechanism can lift relative to the supporting mechanism.
The further technical scheme is as follows:
the upper end of the annular base is connected with the annular beam through a support upright post to form an upper layer and a lower layer of annular support structures which are parallel to each other;
the fixed end of the pressure applying oil cylinder is connected with the lower end of the ring beam, the telescopic end of the pressure applying oil cylinder is connected with an action rod, and the bottom surface profile of the action rod is matched with the upper end surface of the duct piece.
The number of the pressure applying oil cylinders is even, and the pressure applying oil cylinders are controlled by the control system in a unified mode.
The rotary support rotates by taking the center of the support mechanism as an axis;
the milling and digging mechanism and the slurry extracting mechanism are respectively connected to the rotary support and are symmetrically arranged with the rotation center of the rotary support.
The slurry extraction mechanism comprises a slurry pump, the slurry pump is movably connected to the guide stand column through a lifting oil cylinder, and the guide stand column is vertically connected to the lower portion of the rotary support.
A plurality of stirring devices are uniformly arranged around the mortar pump.
The milling and excavating mechanism comprises a supporting arm and a supporting arm oil cylinder;
one end of the supporting arm is hinged with the rotary support, the other end of the supporting arm is provided with a milling head through a telescopic mechanism, and the milling head can rotate; one end of the supporting arm oil cylinder is hinged with the rotary support, and the other end of the supporting arm oil cylinder is hinged with the middle part of the supporting arm.
The device also comprises a mud-water separation device and a pipeline bracket;
an inlet of the mud-water separation device is connected with the slurry extraction mechanism through a mud discharge pipeline through the supporting mechanism, and an outlet of the mud-water separation device is connected with a water return pipeline;
the pipeline bracket is used for providing support and guide for the sludge discharge pipeline and the water return pipeline.
The construction method for tunneling the ultra-large diameter water-carrying operation deep well adopts the ultra-large diameter water-carrying operation deep well tunneling system, and comprises the following steps:
1) manufacturing a segment pushing device:
excavating a cast concrete annular base at a position where a deep well needs to be built;
mounting a plurality of support columns on the annular base in a pre-pouring mode, and fixedly connecting ring beams at the upper ends of the support columns;
n pressure cylinders are uniformly arranged on the ring beam, the fixed ends of the pressure cylinders are fastened on the ring beam, the telescopic ends face the direction of the annular base, and action rods are arranged at the end parts of the pressure cylinders, wherein n is an even number;
2) manufacturing a supporting side wall:
placing a steel blade attached to the inner wall of the annular base, splicing the pipe pieces at the upper ends of the steel blades, splicing the pipe pieces layer by layer along the well depth direction to form a supporting side wall, wherein the depth of the supporting side wall is the foundation depth formed by the construction of pouring the annular base;
3) installing a supporting mechanism:
connecting the milling and digging mechanism and the slurry extraction mechanism with a rotary support on a supporting mechanism, and connecting a supporting leg of the supporting mechanism with an embedded part arranged on the side wall of the lowermost duct piece;
4) and (3) pushing the pipe piece: controlling the telescopic ends of the pressure cylinders to be synchronously pushed out, uniformly pressing the upper end surface of the pipe piece by the action rods along the circumference, and downwards cutting the geological layer on the outer side of the supporting side wall by the bottom of the pipe piece through a steel blade;
5) milling and digging operation: adjusting the excavation radius and depth by using a support arm of the milling and excavating mechanism and a support arm oil cylinder, and milling and excavating the geological layer by using a milling head arranged on the support arm; pumping the slurry to the ground by using a slurry pump and a stirring device of the slurry extraction mechanism;
6) segment stacking: when the extending displacement of the pressure applying oil cylinder is the same as the height of the single-layer duct piece, stopping the milling and digging operation; firstly retracting n/2 of the n pressure cylinders at intervals, adding the segment at the corresponding position after retraction, and then controlling the pressure cylinder which is retracted firstly to apply pressure to the newly added segment layer; the rest n/2 pressing oil cylinders are also retracted, and the segments are added at the corresponding positions after retraction to complete the installation of the rest segments on the current layer;
repeating the step 5) and the step 6) until the tunneling reaches the design depth of the deep well;
7) and (3) injecting concrete to the bottom of the well, sealing the bottom, pumping underground water in the well, and lifting a tunneling system in the well by using hoisting equipment to finish deep well operation.
The further technical scheme is as follows:
the mounting and supporting mechanism also comprises a mud-water separating device mounted on the ground, an inlet of the mud-water separating device is connected with the slurry extracting mechanism through a mud discharging pipeline through the supporting mechanism, and an outlet of the mud-water separating device is connected with a water return pipeline;
the milling and digging operation further comprises a mud-water separation device for extracting mud to the ground, and separated underground water is conveyed into the well through the water return pipeline so as to balance underground water pressure in the well.
The invention has the following beneficial effects:
according to the construction method, the pipe piece is controlled by the bidirectional acting force of the upper end and the lower end all the time in the construction process by utilizing the pipe piece pushing device to uniformly apply pressure from the top of the deep well, so that the perpendicularity of the pipe piece and the installation operation precision of the pipe piece in the construction process are ensured, the construction quality is improved, the construction site area is reduced, and the cost is reduced.
The milling and digging mechanism can be contracted, swung and rotated, and is matched with the segment propulsion device to realize synchronous operation of milling and digging and cutting, so that the automation degree is high, and the construction efficiency is greatly improved.
The slurry extraction mechanism conveys the slurry formed after milling and digging to the mud-water separation device, and the separated underground water is discharged into the well, so that the water pressure in the well is maintained, and the safety of construction operation is improved. The influence of the operation with water on the surrounding environment is reduced, and the construction period is shortened.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of the heading system of the present invention.
Fig. 2 is a schematic structural diagram of a segment propulsion device of the tunneling system.
Fig. 3 is a schematic structural diagram of a milling and excavating mechanism of the heading system of the present invention.
In the figure: 1. a milling head; 2. a steel blade; 3. a support arm; 4. a support arm cylinder; 5. a mortar pump; 6. a lift cylinder; 7. a guide upright post; 8. a conveying pipe; 9. a support mechanism; 10. a duct piece; 11. a sludge discharge pipeline; 12. a pipe support; 13. a mud-water separation device; 14. an annular base; 15. supporting the upright post; 16. a ring beam; 17. a pressure applying oil cylinder; 18. a rotary support; 19. a water return pipe; 301. a first hinge point; 302. a telescopic shaft; 401. a second hinge point; 501. a stirring device; 171. an action rod.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the ultra-large diameter deep well excavation system with water work of the present embodiment includes: the pipe piece 10 is used for enclosing a well wall, and a steel blade 2 is arranged at the lower end of the pipe piece 10 at the lowest layer;
the segment propulsion device comprises an annular base 14, a plurality of pressure cylinders 17 and a plurality of oil cylinders, wherein the annular base 14 is used for positioning the diameter of a deep well, the upper end of the annular base 14 is uniformly provided with the pressure cylinders along the circumference through an annular beam 16, and the pressure cylinders are used for applying pressure to the upper end of an upper segment 10 and pushing a lower segment 10 to move downwards so that the upper segment 10 and the lower segment 10 are sequentially butted to extend a well wall;
and a support mechanism 9 connected to the inner wall of the lowermost segment 10;
the supporting mechanism 9 is provided with a milling and digging mechanism and a slurry extracting mechanism through a rotary support 18, the digging radius of the milling and digging mechanism is adjustable, and the slurry extracting mechanism can lift relative to the supporting mechanism 9.
The ultra-large diameter water-carrying operation deep well tunneling system of the embodiment further comprises a mud-water separation device 13 and a pipeline bracket 12; the inlet of the mud-water separation device 13 is connected with the mud extraction mechanism through a mud discharge pipeline 11 and a support mechanism 9, the outlet of the mud-water separation device 13 is connected with a water return pipeline 19, and the outlet of the mud-water separation device extends into the well;
the pipe bracket 12 serves to provide support and guide for the sludge discharge pipe 11 and the water return pipe 19.
As shown in fig. 2, the upper end of the annular base 14 is connected with the annular beam 16 through the support upright 15 to form an upper and a lower layers of annular support structures which are parallel to each other; the fixed end of the pressure cylinder 17 is connected with the lower end of the ring beam 16, the telescopic end of the pressure cylinder 17 is connected with an action rod 171, and the bottom surface profile of the action rod is matched with the upper end surface of the duct piece 10.
The pressure cylinders 17 are arranged in even number and are controlled by the control system in a unified way.
In particular, the action bars 171 are located at the inner edge of the annular base 14 to facilitate the application of pressure to the segment 10 mounted on the inner wall of the annular base 14.
Specifically, the steel blade 2 is a steel annular structure with a blade angle at the outer diameter side and is used for cutting the geology at the outer side of the bottom of the deep well along the outer diameter.
As shown in fig. 3, the rotary support 18 rotates around the center of the support mechanism 9.
The milling and digging mechanism and the slurry extracting mechanism are respectively connected to the rotary support 18 and are symmetrically arranged with the rotation center of the rotary support 18.
The slurry extraction mechanism comprises a slurry pump 5, the slurry pump 5 is movably connected to a guide upright post 7 through a lifting oil cylinder 6, and the guide upright post 7 is vertically connected below a rotary support 18. A plurality of stirring devices 501 are uniformly arranged around the mortar pump 5.
Specifically, one end of the lifting oil cylinder 6 is fixed with the guide upright post 7, the other end of the lifting oil cylinder is connected with the mounting seat of the mortar pump 5, and the lifting oil cylinder 6 drives the mortar pump 5 to move up and down along the guide upright post 7 so as to adjust the depth, adapt to the depth of the current tunneling layer and effectively extract slurry.
Specifically, the stirring devices 501 are uniformly distributed three along the circumference, so that the mud around the bottom of the mortar pump 5 is stirred, and the extraction is convenient. The slurry pumped by the slurry pump 5 is input into a transmission pipe 8, the transmission pipe 8 is connected with a corresponding inlet on a supporting mechanism 9, an outlet on the upper part of the supporting mechanism 9 is connected with a sludge discharge pipeline 11, the slurry is conveyed to a mud-water separation station 13, and the underground water after cement separation is discharged back into the well through a water return pipeline 19, so that the pressure balance of the underground water is ensured.
The milling and excavating mechanism comprises a supporting arm 3 and a supporting arm oil cylinder 4. One end of the supporting arm 3 is hinged with the rotary support 18, the hinged position is shown as a first hinged point 301 shown in figure 2, the other end is provided with the milling head 1 through a telescopic mechanism, and the milling head 1 can rotate; one end of the supporting arm cylinder 4 is hinged with the rotary support 18, the hinged position is shown as a second hinged point 401 in fig. 2, and the other end is hinged with the middle part of the supporting arm 3.
Specifically, the telescopic mechanism of the support arm 3 adopts a telescopic shaft 301, the telescopic shaft is driven by a driving unit to move axially along the support arm 3, the deeper milling and digging operation is realized, and the support arm 3 swings in a fan shape around a first hinge point 301 under the action of a support arm oil cylinder 4 to finish cutting on a certain section. The milling head 1 can rotate along the axis thereof, and can perform cutting operation on the geological layer at the bottom, so that mud and the like can be formed into slurry under the action of underground water. The range of the effective working fan-shaped angle of the milling head 1 is kept the same as the outer diameter of the steel blade 2, and in the cutting and tunneling working process, the pressure of the upper-end pressurizing oil cylinder 7 acting on the duct piece 10 is transmitted to the steel blade 2, so that synchronous axial cutting is formed, and the tunneling construction of a deep well is completed under the combined action of milling, digging and cutting.
Specifically, the rotary support 18 rotates to realize synchronous rotation of the milling head 1 and the mortar pump 5 mounted on the rotary support, and milling, digging and tunneling in a circumference with a fixed depth of 360 degrees of a deep well are realized.
Those skilled in the art can understand that the supporting arm 3 of the milling and digging mechanism is provided with a sealing device at a position close to an end face of one end of the telescopic shaft 301 extending out and the like, so that silt is prevented from being poured into the shell of the supporting arm 3, and the water-carrying operation of the equipment is realized.
The construction method for tunneling the ultra-large diameter water-carrying operation deep well adopts the ultra-large diameter water-carrying operation deep well tunneling system, and comprises the following steps:
1) manufacturing a segment pushing device:
excavating a cast concrete annular base 14 at a position where a deep well needs to be built;
a plurality of support columns 15 are arranged on the annular base 14 in a pre-pouring mode, and ring beams 16 are fixedly connected to the upper ends of the support columns 15;
Specifically, the outer diameter and depth of the annular base 14 can be designed according to the diameter and depth of the construction deep well. Preferably, the inner diameter of the annular base 14 is 0.3-0.5 m larger than the outer diameter of the deep well being constructed.
Specifically, the action bar 171 has a length of 1.5 meters.
2) Manufacturing a supporting side wall:
place the inner wall of 2 laminating annular bases 14 of steel sword, piece together section of jurisdiction 10 in 2 upper ends of steel sword, assemble section of jurisdiction 10 layer upon layer along the well depth direction, constitute and support the lateral wall, support the degree of depth of lateral wall promptly and build the basic degree of depth that annular bases 14 were under construction and form promptly.
Specifically, the pipe piece 10 arranged on the upper side of the steel blade 2 in a splicing assembly mode has the same inner diameter and the same outer diameter as the steel blade 2.
The foundation depth formed by pouring the annular base 14 in the embodiment can just finish the installation of the three-layer duct piece, and the side wall of the third-layer duct piece is also provided with an embedded part for installing the supporting legs of the supporting mechanism 9, so that the installation of the main body part of the heading machine is realized, and the main body part and the duct piece 10 are fastened into an integral structure.
3) Installing a supporting mechanism:
connecting a milling and digging mechanism and a slurry extracting mechanism with a rotary support 18 on a supporting mechanism 9, and connecting a supporting leg of the supporting mechanism 9 with an embedded part arranged on the side wall of the lowermost duct piece 10;
a mud-water separation device 13 is arranged on the ground, the inlet of the mud-water separation device 13 is connected with a slurry extraction mechanism through a mud discharge pipeline 11 and a support mechanism 9, and the outlet of the mud-water separation device 13 is connected with a water return pipeline 19;
4) and (3) pushing the pipe piece:
the telescopic ends of the pressure applying oil cylinders 17 are controlled to be synchronously pushed out, the action rod 171 evenly presses the upper end face of the pipe piece 10 downwards along the circumference, and the bottom of the pipe piece 10 downwards cuts the geological layer on the outer side of the supporting side wall through the steel blade 2.
Specifically, in the pressing process, the pipe piece 10 forms a clamping state under the action of the upper-end pressing oil cylinder 17 and the lower-end geological formation; the pressure application displacement between the pressure application oil cylinders 17 is strictly controlled, so that the uniform pressure application within a circle of the duct piece 10 is realized, and the downward verticality of the deep well is ensured.
5) Milling and digging operation:
adjusting the excavation radius and depth by using a support arm 3 and a support arm oil cylinder 4 of the milling and excavating mechanism, and milling and excavating the geological layer by using a milling head 1 arranged on the support arm 3;
the slurry is extracted to the mud-water separation device 13 on the ground by the mortar pump 5 and the stirring device 501 of the slurry extraction mechanism, and the separated underground water is conveyed into the well through the water return pipeline 19 so as to balance the underground water pressure in the well.
6) Segment stacking:
when the extending displacement of the pressure applying oil cylinder 17 is the same as the height of the single-layer duct piece 10, the milling and digging operation is stopped; firstly retracting n/2 of the n pressure cylinders 17 at intervals, adding the duct piece 10 at the corresponding position after retraction, and then controlling the pressure cylinder 17 retracted firstly to apply pressure to the newly added duct piece 10 layer; and the rest n/2 pressure cylinders 17 are also withdrawn, and the segment 10 is added at the corresponding position after the withdrawal, so that the installation of the residual segment 10 on the current layer is completed.
And (5) repeating the step 5) and the step 6), and continuously installing the pipe piece 10 layer by layer along with the depth of the deep well until the tunneling reaches the design depth of the deep well.
7) And withdrawing the supporting arm 3 and the supporting arm oil cylinder 4 of the milling and excavating mechanism, and the mortar pump 5 and the stirring device 501 of the slurry extracting mechanism to form a larger space at the bottom of the well, pouring concrete to the bottom of the well to seal the bottom, pumping underground water in the well, and lifting the tunneling system in the well by using hoisting equipment to complete the construction operation of the deep well.
Specifically, the number n of the pressure cylinders 17 is set according to actual needs, and preferably 6.
The tunneling system is small in occupied area during operation and construction, and suitable for completing deep well construction operation under working conditions of narrow and small streets, buildings and the like. The construction method is convenient to adjust the posture of the vertical shaft, ensures the verticality of the vertical shaft, is high in construction efficiency and short in period, is suitable for construction operation of a deep well with a large diameter of more than 12 meters, and is particularly suitable for construction of a deep well with a diameter of 16-20 meters. The tunneling system and the construction method are suitable for underwater work, surrounding underground water operation does not need to be reduced, and the surrounding environment is not affected.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an ultra large diameter area water work deep well tunnelling system which characterized in that includes:
the pipe piece (10) is used for enclosing a well wall, and a steel blade (2) is arranged at the lower end of the pipe piece (10) at the lowest layer;
the segment propulsion device comprises an annular base (14) used for positioning the diameter of a deep well, wherein a plurality of pressure cylinders (17) are uniformly arranged at the upper end of the annular base (14) along the circumference through an annular beam (16) and used for applying pressure to the upper end of an upper segment (10) and pushing a lower segment (10) to move downwards so that the upper segment (10) and the lower segment (10) are sequentially butted to extend a well wall;
and a support mechanism (9) connected to the inner wall of the lowermost segment (10); the supporting mechanism (9) is provided with a milling and digging mechanism and a slurry extracting mechanism through a rotary support (18), the digging radius of the milling and digging mechanism is adjustable, and the slurry extracting mechanism can lift relative to the supporting mechanism (9).
2. The ultra-large diameter water-carrying working deep well tunneling system according to claim 1, wherein the upper end of the annular base (14) is connected with the annular beam (16) through a support upright post (15) to form an upper layer and a lower layer of annular support structures which are parallel to each other;
the fixed end of the pressure applying oil cylinder (17) is connected with the lower end of the ring beam (16), the telescopic end of the pressure applying oil cylinder (17) is connected with an action rod (171), and the bottom surface profile of the pressure applying oil cylinder is matched with the upper end surface of the duct piece (10).
3. The ultra-large diameter water-carrying working deep well tunneling system according to claim 2, wherein an even number of the pressure applying oil cylinders (17) are arranged and are uniformly controlled by the control system.
4. The ultra-large diameter water-carrying working deep well excavation system according to claim 1, wherein the slewing support (18) rotates with the center of the support mechanism (9) as an axis;
the milling and digging mechanism and the slurry extracting mechanism are respectively connected to the rotary support (18) and are symmetrically arranged with the rotation center of the rotary support (18).
5. The ultra-large diameter water-carrying working deep well tunneling system according to claim 1, wherein the slurry extraction mechanism comprises a slurry pump (5), the slurry pump (5) is movably connected to a guide upright post (7) through a lifting cylinder (6), and the guide upright post (7) is vertically connected below the rotary support (18).
6. The ultra-large diameter water-carrying working deep well tunneling system according to claim 5, wherein a plurality of stirring devices (501) are uniformly arranged around the mortar pump (5).
7. The ultra-large diameter water-carrying working deep well excavation system according to claim 1, wherein the milling and excavation mechanism comprises a support arm (3) and a support arm cylinder (4);
one end of the supporting arm (3) is hinged with the rotary support (18), the other end of the supporting arm is provided with a milling head (1) through a telescopic mechanism, and the milling head (1) can rotate;
one end of the supporting arm oil cylinder (4) is hinged with the rotary support (18), and the other end of the supporting arm oil cylinder is hinged with the middle part of the supporting arm (3).
8. The ultra-large diameter water-carrying working deep well excavation system according to claim 1, further comprising a mud-water separation device (13) and a pipe support (12);
an inlet of the mud-water separation device (13) is connected with the slurry extraction mechanism through the support mechanism (9) through a mud discharge pipeline (11), and an outlet of the mud-water separation device (13) is connected with a water return pipeline (19);
the pipeline bracket (12) is used for providing support and guide for the sludge discharge pipeline (11) and the water return pipeline (19).
9. A construction method for tunneling an ultra-large diameter water-carrying deep well is characterized in that the ultra-large diameter water-carrying deep well tunneling system of any one of claims 1 to 8 is adopted, and comprises the following steps:
1) manufacturing a segment pushing device:
excavating a cast concrete annular base (14) at a position where a deep well needs to be built;
a plurality of support columns (15) are arranged on the annular base (14) in a pre-pouring mode, and ring beams (16) are fixedly connected to the upper ends of the support columns (15);
n pressure cylinders (17) are uniformly arranged on the ring beam (16), the fixed end of each pressure cylinder (17) is fastened on the ring beam (16), the telescopic end faces the direction of the ring base (14), and an action rod (171) is arranged at the end part, wherein n is an even number;
2) manufacturing a supporting side wall:
placing a steel blade (2) in a manner of being attached to the inner wall of an annular base (14), splicing pipe pieces (10) at the upper ends of the steel blades (2), splicing the pipe pieces (10) layer by layer along the well depth direction to form a supporting side wall, wherein the depth of the supporting side wall is the foundation depth formed by pouring the annular base (14);
3) installing a supporting mechanism:
connecting a milling and digging mechanism and a slurry extracting mechanism with a rotary support (18) on a supporting mechanism (9), and connecting a supporting leg of the supporting mechanism (9) with an embedded part arranged on the side wall of the lowermost duct piece (10);
4) and (3) pushing the pipe piece:
the telescopic ends of the pressure cylinders (17) are controlled to be pushed out synchronously, the action rods (171) uniformly press the upper end surface of the pipe piece (10) downwards along the circumference, and the bottom of the pipe piece (10) downwards cuts the geological layer on the outer side of the supporting side wall through the steel blade (2);
5) milling and digging operation:
the support arm (3) and the support arm oil cylinder (4) of the milling and digging mechanism are used for adjusting the digging radius and depth, and the milling head (1) arranged on the support arm (3) is used for milling and digging the geological layer;
the slurry is extracted to the ground by a slurry pump (5) and a stirring device (501) of the slurry extraction mechanism;
6) segment stacking:
when the extending displacement of the pressure applying oil cylinder (17) is the same as the height of the single-layer duct piece (10), the milling and digging operation is stopped;
firstly retracting n/2 of the n pressure cylinders (17) at intervals, adding the duct piece (10) at the corresponding position after retraction, and then controlling the pressure cylinder (17) retracted firstly to apply pressure to the newly added duct piece (10) layer;
the rest n/2 pressure applying oil cylinders (17) are also retracted, and the segment (10) is added at the corresponding position after retraction to complete the installation of the rest segment (10) on the current layer;
repeating the step 5) and the step 6) until the tunneling reaches the design depth of the deep well;
7) and (3) injecting concrete to the bottom of the well, sealing the bottom, pumping underground water in the well, and lifting a tunneling system in the well by using hoisting equipment to finish deep well operation.
10. The ultra-large diameter deep well tunneling construction method with water work according to claim 9, characterized in that the mounting of the supporting mechanism further comprises mounting of a mud-water separating device (13) on the ground, the inlet of the mud-water separating device (13) is connected with the slurry extracting mechanism through the supporting mechanism (9) through a mud discharging pipeline (11), and the outlet of the mud-water separating device (13) is connected with a water return pipeline (19);
the milling and digging operation further comprises a mud-water separation device (13) for pumping mud to the ground, and separated underground water is conveyed into the well through the water return pipeline (19) so as to balance underground water pressure in the well.
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| CN202111310008.4A CN114033387A (en) | 2021-11-05 | 2021-11-05 | Ultra-large-diameter deep well tunneling system with water operation and construction method |
| PCT/CN2022/105949 WO2023077863A1 (en) | 2021-11-05 | 2022-07-15 | Super-large diameter deep well excavation system working with presence of water and construction method |
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| WO2023077863A1 (en) * | 2021-11-05 | 2023-05-11 | 建湖富力智能科技有限公司 | Super-large diameter deep well excavation system working with presence of water and construction method |
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| CN117005870B (en) * | 2023-09-08 | 2024-03-05 | 中铁七局集团广州工程有限公司 | Deviation correction detection device and method for curve jacking engineering |
| CN117231159B (en) * | 2023-11-10 | 2024-02-20 | 克拉玛依市禹荣有限责任公司 | Bentonite shutoff construction equipment of self-flowing well |
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| JP4138568B2 (en) * | 2003-04-30 | 2008-08-27 | 株式会社加藤建設 | Construction method of shaft using liner plate |
| CN106761764B (en) * | 2016-12-27 | 2020-03-10 | 山河智能装备股份有限公司 | Simple shield device and shield method for ultra-large-diameter deep shaft |
| CN112459784A (en) * | 2020-11-20 | 2021-03-09 | 徐工集团凯宫重工南京股份有限公司 | Sinking type vertical shaft tunneling machine and well completion method thereof |
| CN113482054A (en) * | 2021-07-13 | 2021-10-08 | 上海隧道工程有限公司 | Active press-in type vertical shaft construction system and method suitable for soft soil area |
| CN114033387A (en) * | 2021-11-05 | 2022-02-11 | 建湖富力智能科技有限公司 | Ultra-large-diameter deep well tunneling system with water operation and construction method |
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| WO2023077863A1 (en) * | 2021-11-05 | 2023-05-11 | 建湖富力智能科技有限公司 | Super-large diameter deep well excavation system working with presence of water and construction method |
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