CN112664197A - Shaft excavation device, large-diameter shaft heading machine and construction method - Google Patents
Shaft excavation device, large-diameter shaft heading machine and construction method Download PDFInfo
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- CN112664197A CN112664197A CN202110109549.4A CN202110109549A CN112664197A CN 112664197 A CN112664197 A CN 112664197A CN 202110109549 A CN202110109549 A CN 202110109549A CN 112664197 A CN112664197 A CN 112664197A
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 138
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 239000002893 slag Substances 0.000 claims abstract description 33
- 238000000926 separation method Methods 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010079 rubber tapping Methods 0.000 description 8
- 239000011440 grout Substances 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a vertical shaft excavation device, a large-diameter vertical shaft heading machine and a construction method, and solves the problems that in the prior art, a large-section vertical shaft is difficult to construct and low in excavation efficiency. The shaft excavation device comprises a supporting platform, wherein a revolution mechanism is arranged on the supporting platform, at least one swing arm excavation assembly capable of rotating automatically is arranged on the revolution mechanism, a slag discharging mechanism is arranged on the swing arm excavation assembly, and the slag discharging mechanism is connected with a slurry separation system. The excavating device has the characteristics of flexibility, compact structure and the like, the working space of the working face is sufficient, local special treatment can be performed according to special geology, the equipment is flexibly controlled to be over-excavated, and the direction adjusting function and the verticality control in the shaft sinking process are completed by matching with a shaft lifting system under high-precision control, so that the high-precision sinking of the shaft is realized, and the phenomena of shaft sinking, deflection sinking, no sinking and the like in the traditional construction process are avoided.
Description
Technical Field
The invention relates to the technical field of shaft excavation, in particular to a shaft excavation device, a large-diameter shaft heading machine and a construction method.
Background
With the deep research and application of underground engineering, the application range of the vertical shaft is wider and wider. The traditional shaft construction method adopts a common shaft sinking method, and the method has the advantages of low excavation speed, low mechanization degree, high safety risk of constructors and high construction cost. The highly mechanized and intelligent shaft boring machine is a development trend, can realize underground unmanned construction, intelligent operation and monitoring, and has high construction precision and high construction speed.
Aiming at the excavation of a large-diameter and ultra-large-diameter section vertical shaft, the heading machine formed by one-time excavation is large in manufacturing difficulty, the weight of a cutter head is heavy, great difficulty is brought to manufacturing, great cost waste is caused in the aspects of transportation, construction site assembly, equipment dismantling, power matching and the like, and the problems of low safety dismantling efficiency, large power consumption and the like are the main characteristics of construction of the full-section heading machine. Especially for the construction in cities, the limitation of the field leads to higher requirements on the size, the operation mode and the excavation efficiency of the heading machine. To sum up, how to effectively solve the problems of low excavation efficiency of the full-section of the large-section vertical shaft and the like is a problem to be solved by the personnel in the field at present.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a vertical shaft excavation device, a large-diameter vertical shaft heading machine and a construction method, and solves the problems that in the prior art, a large-section vertical shaft is difficult to construct and the excavation efficiency is low.
The technical scheme of the invention is realized as follows: the utility model provides a shaft excavation device, includes supporting platform, the last revolution mechanism that is equipped with of supporting platform, be equipped with at least one swing arm excavation subassembly that can the rotation on the revolution mechanism, be equipped with the mechanism of slagging tap on the swing arm excavation subassembly, the mechanism of slagging tap is connected with mud piece-rate system.
Furthermore, revolution mechanism includes slewing bracket and fixes the support frame on the pit shaft, and slewing bracket rotates with fixed support frame to be connected, and slewing bracket is connected with the main drive that sets up on supporting platform through drive mechanism. Preferably, a plurality of swing arm excavation assemblies are arranged on the rotary support along the circumferential direction, the swing arm excavation assemblies are radially arranged from the center to the periphery along the rotary support, and each swing arm excavation assembly can rotate +/-180 degrees.
Further, the swing arm excavation component comprises an auxiliary drive and a cutting arm, the auxiliary drive is connected with the revolution mechanism through a sliding mechanism, the output end of the auxiliary drive is provided with a rotary seat, the cutting arm is hinged on the rotary seat and is connected with the rotary seat through a swing oil cylinder, and the lower part of the cutting arm is provided with a cutting tool bit. Preferably, the sliding mechanism comprises a propelling track and a pushing piece which are fixed on the revolution mechanism, and the secondary drive is in sliding fit with the propelling track and is connected with the pushing piece.
Further, slag discharging mechanism is including fixing elbow pipe and the slush pump on the cutting arm of swing arm excavation subassembly, and elbow pipe and slush pump are connected, and the thick liquid mouth that advances of elbow pipe is equipped with the grid board, and the grid board is towards the cutter head of swing arm excavation subassembly, and the play thick liquid end of elbow pipe is equipped with out the thick liquid pipe, goes out the thick liquid pipe and upwards extends through the vice rotary joint who sets up on swing arm excavation subassembly, and is connected with mud piece-rate system through the main rotary joint who sets up on revolution mechanism.
The utility model provides a major diameter shaft entry driving machine, includes shaft excavation device, pit shaft carry and draw device, mud-water separation system and cable bracket system, shaft excavation device sets up in the pit shaft, and the pit shaft is carried by the pit shaft and is drawn the power that the device provided the up-and-down motion, mud-water separation system and shaft excavation device's slag discharging mechanism intercommunication, cable bracket system and shaft excavation device are connected, shaft carry and draw device, mud-water separation system and cable bracket system to set up subaerial.
Further, the shaft comprises a cylinder body and a cutting edge ring, the cylinder body is composed of pipe pieces, the cutting edge ring is located on the bottom end face of the cylinder body, a sealing element is arranged on the outer circumferential face, in contact with the hole wall, of the cutting edge ring, a fixing device is arranged on the cutting edge ring, a first steel strand is arranged on the fixing device, and the first steel strand is connected with the shaft lifting device. And the power cable on the cable bracket system and the mud pipe of the mud-water separation system both extend downwards through a main rotary joint on the vertical shaft excavation device.
A construction method of the large-diameter shaft heading machine comprises the following steps: s1: carrying out fore shaft construction on the foundation pit;
s2: installing the blade foot ring and the marked pipe joints assembled by the pipe pieces in a foundation pit, installing a shaft lifting device after measuring and confirming the center and the verticality, and fixing a shaft through a first steel strand;
s3: installing a vertical shaft excavating device in a shaft, and connecting corresponding pipelines;
s4: starting the shaft excavation device, integrally revolving the swing arm excavation components of the shaft excavation device under the action of the revolution mechanism, and simultaneously, automatically rotating each swing arm excavation component to perform large-diameter excavation on the foundation pit to form a well hole;
s5: slurry generated in the excavation process enters a slurry separation system through a slag discharging mechanism on the swing arm excavation assembly, the slurry separation system performs filtration treatment on the slurry, and the filtered slurry enters the foundation pit again to form slurry circulation;
s6: in the process of excavating the vertical shaft excavating device, the shaft pulling device drives the vertical shaft excavating device to move downwards through a shaft until the shaft excavating device excavates to a designed elevation;
s7: and (4) disassembling the tunneling machine and related equipment, then carrying out bottom sealing operation, and filling concrete between the shaft and the well hole to form a vertical shaft.
The excavating device has the characteristics of flexibility, compact structure and the like, the working space of the working face is sufficient, local special treatment can be performed according to special geology, the equipment is flexibly controlled to be over-excavated, and the direction adjusting function and the verticality control in the shaft sinking process are completed by matching with a shaft lifting system under high-precision control, so that the high-precision sinking of the shaft is realized, and the phenomena of shaft sinking, deflection sinking, no sinking and the like in the traditional construction process are avoided. Through the organic combination of swing arm excavation subassembly and revolution with the mode of operation of rotation, simplified equipment volume and weight, at the in-process of accomplishing major diameter shaft construction, effectively promote the efficiency of construction, reduced equipment manufacturing cost. The invention realizes the excavation of a vertical shaft with an ultra-large diameter by organically combining swing arm excavation components and combining a corresponding control method and a construction technology, and the development machine realizes an excavation form of full-section coverage by the autorotation of an excavation device and the revolution motion of an integral rotary support; the shaft sinks in a follow-up mode, the excavation and the supporting are carried out synchronously, the shaft is fixed by a plurality of groups of lifting devices arranged on the ground, the stability and the sinking direction of the shaft are kept, a set of complete construction process and construction method are formed by combining the shaft lifting devices with the excavation and slag discharging devices, and the construction efficiency and the construction safety coefficient are greatly improved.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is a schematic view of the overall structure of the present invention.
Figure 2 is a schematic plan view of the shaft boring machine of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Fig. 4 is a schematic side view of the assembly state of the swing arm excavating assembly and the slag discharging mechanism.
Fig. 5 is a schematic front view of the assembly state of the swing arm excavating assembly and the slag discharging mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, in embodiment 1, a shaft excavation apparatus includes a support platform 6, where the support platform 6 is a main support part of the excavation apparatus, and during construction, the support platform is fixed on a shaft and moves downward along with the shaft synchronously. The supporting platform 6 is provided with a revolution mechanism 7, the revolution mechanism can rotate 360 degrees relative to the supporting platform, the revolution mechanism 7 is provided with at least one swing arm excavation component 8 capable of rotating automatically, the swing arm excavation component can synchronously rotate along with the revolution mechanism and can also rotate 360 degrees, and the rotation and the revolution are combined to realize the excavation of a full section. Be equipped with out slag mechanism 11 on the swing arm excavation subassembly 8, it is connected with mud separation system to go out slag mechanism 11. And (4) enabling slurry generated in the excavation process to enter a slurry separation system through a slag discharging mechanism to finish slag discharging.
Further, the revolution mechanism 7 includes a rotary support 701 and a fixed support frame 703 fixed on the shaft 9, the fixed support frame provides a part of support for the rotary support, the rotary support 701 is rotatably connected with the fixed support frame 703, and the rotary support 701 is connected with a main drive 702 arranged on the support platform 6 through a transmission mechanism. The rotary support is connected with the supporting platform through rotary parts such as bearings and the like, and then rotates relative to the fixed supporting frame under the action of the main drive, so that the revolution of the swing arm excavation assembly is realized. Preferably, a plurality of swing arm excavation assemblies 8 are arranged on the rotating support 701 along the circumferential direction, and the number of the swing arm excavation assemblies is set according to the requirement. The best mode is that the swing arm excavation assemblies 8 are arranged from the center to the periphery along the radial direction of the rotating support 701, and each swing arm excavation assembly 8 can rotate +/-180 degrees. The swing arm excavation component can be used as an independent unit excavation vertical shaft, and an excavation system can be formed to realize excavation with larger diameter.
In the construction process, a central channel is reserved in the rotary support, and the slag tapping mode can be switched between the water-bearing geology and the waterless geology. Aiming at the water-rich geology, a main rotary joint is arranged on a rotary support and is connected with a mud pipe to realize mud-water circulation deslagging. Aiming at arid and low-water geology, a central channel of the rotary support is left empty and is used as a dry-type slag discharging channel of a grab bucket or a bucket, and the like, so that the slag soil conveying requirement of an anhydrous environment is met.
Further, as shown in fig. 3, the swing arm excavation assembly 8 includes a secondary drive 802 and a cutting arm 804, the secondary drive 802 is connected with the revolution mechanism 7 through a sliding mechanism, and the secondary drive provides power for rotation of the cutting arm. The output end of the auxiliary drive 802 is provided with a rotary seat 801, the cutting arm 804 is hinged on the rotary seat 801 and is connected with the rotary seat 801 through a swing oil cylinder 805, and the swing oil cylinder 805 stretches and retracts to drive the cutting arm to swing to adjust the excavation diameter. The lower part of the cutting arm 804 is provided with a cutting tool head 806, and the cutting tools are uniformly and spirally arranged, so that the excavation efficiency is improved. Realize the large diameter section excavation through digging a plurality of swing arm excavation subassembly linkage work, still possess simultaneously and excavate the adjustable function of diameter. Compared with the traditional excavation mode, the reverse thrust and the torsion moment born by equipment and a shaft in the excavation process are reduced, the energy consumption is reduced, the whole working range is enlarged under the condition that the equipment installed power and the whole weight are controlled, the large-section shaft excavation device is suitable for excavation of a large-section shaft, the working efficiency is improved, and the equipment manufacturing cost is reduced. Wherein, preferably, the sliding mechanism comprises a propelling track 803 fixed on the revolving mechanism 7 and a pushing member 807, and the secondary drive 802 is in sliding fit with the propelling track 803 and is connected with the pushing member 807. The pushing piece can adopt a driving oil cylinder, and under the action of the driving oil cylinder, the swing arm excavation component performs vertical feeding motion, so that the excavation efficiency is improved.
Further, as shown in fig. 4 and 5, the slag discharging mechanism 11 comprises an elbow pipe 111 fixed on a cutting arm 804 of the swing arm excavation assembly 8 and a mud pump 116, wherein the elbow pipe 111 is connected with the mud pump 116, and the mud pump provides power for mud feeding. The grout inlet of elbow pipe 111 is equipped with grid plate 112, the grout inlet is the horn mouth, grid plate 112 is towards cutterhead 806, the grid that the tip of elbow pipe set up avoids the massive dregs to concentrate into and advances the grout pipe and cause the jam, the entry part that advances the grout pipe is towards the cutterhead, can make the dregs directly get into the grout pipe under the effect of centrifugal force on the one hand through the rotation of cutterhead, on the one hand oversized stone or barrier can be swept by the pick on the cutterhead and follow and advance the grout pipe and go out the separation, prevent to advance the grout pipe jam. The slurry outlet end of the elbow pipe 111 is provided with a slurry outlet pipe 113, and the slurry outlet pipe 113 extends upwards through a secondary rotary joint 114 arranged on the swing arm excavation component 8 and is connected with the slurry separation system through a primary rotary joint 115 arranged on the revolution mechanism 7. The mud pump is driven by a motor, circulating mud enters the mud inlet pipe through the mud pump, is collected into the channel of the main rotary joint through the central channel of the auxiliary rotary joint, is conveyed out of the well, is filtered by the mud-water separation system 3 and then returns into the well, and forms mud-water circulating flow.
The independent rotation excavation of each swing arm excavation component can cover the whole excavation section by cooperating with the revolution motion of the supporting platform. Under the excavation outline of the same area, the excavation devices are designed and arranged in groups, compared with a single group of excavation devices, the overall size of the excavation devices can be correspondingly reduced, the driving power is also reduced at any time, the working efficiency of the single group of excavation devices is obviously improved, meanwhile, compared with the traditional excavation mode, the diameter of a single circular excavation surface is reduced, the counter thrust and the torsion moment borne by equipment and a shaft in the excavation process of the heading machine are reduced, the fatigue failure of the component under a large load condition is prevented, the overall working range is expanded, the excavation device is suitable for excavation of a large-section shaft, the working efficiency can be effectively improved, and the manufacturing cost of the equipment is reduced. Because the characteristics such as flexibility and compact structure of excavation device, face operating space is abundant, can carry out local special treatment to special geology, and nimble controlgear is surpassed and is dug inadequately, and the pit shaft that cooperates under the high accuracy control carries the system to accomplish the direction adjusting function and the straightness control that hangs down of pit shaft in the process of sinking to realize the high accuracy of pit shaft and sink, avoid the pit shaft in traditional work progress phenomenon such as protruding sinking, partial sinking, not sinking to take place. The obvious advantages brought by the organic combination of the multiple groups of small-diameter tunneling machines in the excavation mode of the tunneling machine are high in efficiency, low in installed power and the like, the modular design of the single group of devices is favorable for improving the efficiency of a manufacturing link, due to the fact that the size is reduced, on one hand, the modular design of the single group of devices is favorable for organizing mass production, accessories are easy to purchase, on the one hand, the processing and manufacturing difficulty is reduced, the requirements for processing equipment, hoisting equipment, transport capacity and the like are further reduced, in conclusion, the comprehensive energy efficiency of the equipment is improved, the cost performance is improved, the optimal solution for excavation of the current large-diameter shaft is provided, and the market popularization and application are facilitated.
Example 2: as shown in fig. 1 and 2, the large-diameter shaft heading machine comprises a shaft excavation device, a shaft lifting device 1, a mud-water separation system 3 and a cable bracket system 2, wherein the shaft excavation device is arranged in a shaft 9, the shaft 9 is powered by the shaft lifting device 1 to move up and down, the mud-water separation system 3 is communicated with a slag discharging mechanism 11 of the shaft excavation device, the cable bracket system 2 is connected with the shaft excavation device, and the shaft excavation device 1, the mud-water separation system 3 and the cable bracket system 2 are arranged on the ground. The shaft lifting device is provided with a plurality of groups of lifting devices which are uniformly distributed around the foundation pit and provide stable lifting force. The shaft is connected to the lower end of the lifting device through a first steel strand 10 steel strand fixer, and the lifting device is used for lifting the shaft stably and keeping a vertical state. The ground equipment also comprises a power system and a control operation unit. The mud pipe and the power cable are wound and unwound through the cable bracket system 2, redundant pipelines can be stored in the cable bracket, and the stored pipelines are placed at a constant speed under the control of operating personnel along with continuous tunneling of equipment.
Further, the shaft 9 comprises a cylinder body consisting of pipe pieces 901 and a cutting edge ring 904, wherein the cutting edge ring is in a wedge-shaped design, so that sinking resistance is reduced. The edge foot ring 904 is positioned on the bottom end face of the barrel, a sealing element 903 is arranged on the outer circumferential face, in contact with the hole wall, of the edge foot ring 904 and used for sealing antifriction slurry with the wall thickness of a shaft, and the sealing element is composed of an annular rubber sleeve and a pressing plate and is fixed on the outer wall of the edge foot ring through bolts. The edge foot ring 904 is provided with a fixer 902, the fixer 902 is provided with a first steel strand 10, and the first steel strand 10 is connected with the shaft pulling device 1. The steel strand fixer is used for connecting the steel strand and bearing the gravity of a shaft and a heading machine, the fixer can be arranged behind the blade foot wall so as to keep the vertical stress of the steel strand, and the fixer can also be arranged in a ring so as to facilitate the disassembly and assembly of the steel strand. The power cable 4 on the cable bracket system 2 and the mud pipe 5 of the mud-water separation system 3 both extend downwards through a main swivel joint 115 on the shaft excavation device. The mud pipe comprises a mud outlet pipeline and a mud inlet pipeline, so that mud is circulated. The other structure is the same as embodiment 1.
Example 3: a construction method of the large-diameter shaft boring machine according to embodiment 2, comprising the steps of: s1: carrying out fore shaft construction on the foundation pit; completing the construction of a locking opening and an initial foundation pit according to the installation and initial site arrangement outline of the development machine;
s2: installing the blade foot ring and the marked pipe joints assembled by the pipe pieces in a foundation pit, installing a shaft lifting device after measuring and confirming the center and the verticality, and fixing a shaft through a first steel strand;
s3: installing a vertical shaft excavating device in a shaft, and connecting corresponding pipelines; after the preparation work of the steps S1 and S2 is finished, the equipment is installed by wiring, an installation interface is preset on the wall of the shaft, the supporting platform, the rotary joint and the excavating device are installed underground in sequence through hoisting equipment, then the pipeline is connected to a control room and a power unit on the ground, and excavating and starting are started. The slag tapping mode can be flexibly combined and selected according to geological and hydrological conditions, and the slag tapping mode adopts a mode of combining a slurry pump pumping system and a mud-water separation system to tap slag aiming at a water-rich stratum. The construction engineering well adopts non-drainage operation to keep the underground water level balance, and the phenomena of peripheral geological settlement, tunnel face instability and the like are prevented. The dry-type slag tapping can be carried out through the channel where the rotary joint is located in a grab bucket mode in the arid water-deficient area, the problems of difficulty in water taking, environmental damage and the like are solved, and the dry-type slag tapping device is energy-saving, environment-friendly, green and efficient.
S4: starting the shaft excavation device, integrally revolving the swing arm excavation assemblies 8 of the shaft excavation device under the action of the revolution mechanism, and simultaneously, automatically rotating each swing arm excavation assembly to perform large-diameter excavation on the foundation pit to form a well hole; the excavating device is formed by organically combining a plurality of groups of swing arm excavating components through a certain position relation, the single group of excavating devices can realize vertical movement, the vertical feeding function of excavation is realized, the cutting head rotationally cuts rock soil under the driving of the cutting arm, the cutting arm is arranged at the lower end of the driving device, the rotation of +/-180 degrees can be realized, the cutting of different diameters is realized through a swing arm oil cylinder arranged at the lower end of the driving device, and the diameter of a circle drawn by the cutting arm is determined according to the diameter of a vertical shaft in actual construction. When the multiple groups of swing arm excavation assemblies draw circles to cut rock soil, the swing arm excavation assemblies do revolution motion around the center of the shaft under the driving action of the rotary support, and the rotation and the revolution of the excavation device are fitted to complete excavation of the end face of the large-diameter shaft. And the cutting diameter changed by the swinging of the cutting arm can enable the cutting head on the cutting arm to stretch into the lower part of the cutting edge foot to realize the full-section excavation, so that the over-excavation function is realized, and the shaft lifting system is assisted to realize the control of the shaft verticality.
S5: aiming at mud-water slag discharge, slurry generated in the excavation process enters a slurry separation system through a slag discharge mechanism 11 on the swing arm excavation component 8, the slurry separation system performs filtration treatment on the slurry, and the filtered slurry enters the foundation pit again to form mud-water circulation. The slag tapping mode can be flexibly combined and selected according to geological and hydrological conditions, and the slag tapping mode adopts a mode of combining a slurry pump pumping system and a mud-water separation system to tap slag aiming at a water-rich stratum. The construction engineering well adopts non-drainage operation to keep the underground water level balance, and the phenomena of peripheral geological settlement, tunnel face instability and the like are prevented. Dry slag tapping can be carried out through a channel where the rotary joint is positioned in a grab bucket mode aiming at the arid water-deficient area.
S6: in the process of excavating the vertical shaft excavating device, the shaft pulling device drives the vertical shaft excavating device to move downwards through a shaft until the shaft excavating device excavates to a designed elevation;
s7: and (4) disassembling the tunneling machine and related equipment, then carrying out bottom sealing operation, and filling concrete between the shaft and the well hole to form a vertical shaft.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A shaft excavation device, includes supporting platform (6), its characterized in that: the slurry separation device is characterized in that a revolution mechanism (7) is arranged on the supporting platform (6), at least one swing arm excavation assembly (8) capable of rotating automatically is arranged on the revolution mechanism (7), a slag discharging mechanism (11) is arranged on the swing arm excavation assembly (8), and the slag discharging mechanism (11) is connected with a slurry separation system.
2. Shaft excavation apparatus according to claim 1, wherein: the revolution mechanism (7) comprises a rotary support (701) and a fixed support frame (703) fixed on the shaft (9), the rotary support (701) is rotatably connected with the fixed support frame (703), and the rotary support (701) is connected with a main drive (702) arranged on the support platform (6) through a transmission mechanism.
3. Shaft excavation apparatus according to claim 2, wherein: a plurality of swing arm excavation assemblies (8) are arranged on the rotary support (701) along the circumferential direction, the swing arm excavation assemblies (8) are radially arranged from the center to the periphery along the rotary support (701), and each swing arm excavation assembly (8) can rotate +/-180 degrees.
4. Shaft excavation apparatus according to claim 1 or 3, wherein: the swing arm excavation assembly (8) comprises an auxiliary drive (802) and a cutting arm (804), the auxiliary drive (802) is connected with the revolution mechanism (7) through a sliding mechanism, a rotary seat (801) is arranged at the output end of the auxiliary drive (802), the cutting arm (804) is hinged to the rotary seat (801) and is connected with the rotary seat (801) through a swing oil cylinder (805), and a cutting tool bit (806) is arranged at the lower part of the cutting arm (804).
5. Shaft excavation apparatus according to claim 4, wherein: the sliding mechanism comprises a propelling track (803) and a pushing piece (807) which are fixed on the revolution mechanism (7), and the auxiliary drive (802) is in sliding fit with the propelling track (803) and is connected with the pushing piece (807).
6. A shaft excavation apparatus as claimed in any one of claims 1 to 3 and 5, wherein: slag discharging mechanism (11) is including fixing elbow pipe (111) and slush pump (116) on cutting arm (804) of swing arm excavation subassembly (8), elbow pipe (111) and slush pump (116) are connected, the thick liquid mouth that advances of elbow pipe (111) is equipped with grid plate (112), grid plate (112) are towards cutting tool bit (806) of swing arm excavation subassembly (8), the play thick liquid end of elbow pipe (111) is equipped with out thick liquid pipe (113), it upwards extends through vice rotary joint (114) that sets up on swing arm excavation subassembly (8) to go out thick liquid pipe (113), and be connected with mud separation system through main rotary joint (115) that sets up on revolution mechanism (7).
7. The utility model provides a major diameter shaft entry driving machine which characterized in that: the shaft excavation device comprises the shaft excavation device, a shaft lifting device (1), a mud-water separation system (3) and a cable bracket system (2) according to any one of claims 1 to 6, wherein the shaft excavation device is arranged in a shaft (9), the shaft (9) is powered by the shaft lifting device (1) to move up and down, the mud-water separation system (3) is communicated with a slag discharging mechanism (11) of the shaft excavation device, the cable bracket system (2) is connected with the shaft excavation device, and the shaft lifting device (1), the mud-water separation system (3) and the cable bracket system (2) are arranged on the ground.
8. A large diameter shaft boring machine according to claim 7, wherein: the shaft (9) comprises a cylinder body consisting of pipe pieces (901) and a cutting edge ring (904), the cutting edge ring (904) is located on the bottom end face of the cylinder body, a sealing element (903) is arranged on the outer circumferential face, in contact with the hole wall, of the cutting edge ring (904), a fixer (902) is arranged on the cutting edge ring (904), a first steel strand (10) is arranged on the fixer (902), and the first steel strand (10) is connected with the shaft lifting device (1).
9. A large diameter shaft boring machine according to claim 8, wherein: and the power cable (4) on the cable bracket system (2) and the mud pipe (5) of the mud-water separation system (3) both extend downwards through a main rotary joint (115) on the shaft excavation device.
10. A construction method of a large-diameter shaft boring machine according to any one of claims 7 to 9, characterized in that: the method comprises the following steps: s1: carrying out fore shaft construction on the foundation pit;
s2: installing the blade foot ring and the marked pipe joints assembled by the pipe pieces in a foundation pit, installing a shaft lifting device after measuring and confirming the center and the verticality, and fixing a shaft through a first steel strand;
s3: installing a vertical shaft excavating device in a shaft, and connecting corresponding pipelines;
s4: starting the vertical shaft excavation device, integrally revolving a swing arm excavation assembly (8) of the vertical shaft excavation device under the action of a revolution mechanism, and simultaneously, automatically rotating each swing arm excavation assembly to perform large-diameter excavation on the foundation pit to form a well hole;
s5: slurry generated in the excavation process enters a slurry separation system through a slag discharging mechanism (11) on the swing arm excavation assembly (8), the slurry separation system performs filtration treatment on the slurry, and the filtered slurry enters the foundation pit again to form slurry circulation;
s6: in the process of excavating the vertical shaft excavating device, the shaft pulling device drives the vertical shaft excavating device to move downwards through a shaft until the shaft excavating device excavates to a designed elevation;
s7: and (4) disassembling the tunneling machine and related equipment, then carrying out bottom sealing operation, and filling concrete between the shaft and the well hole to form a vertical shaft.
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| CN113446008A (en) * | 2021-08-04 | 2021-09-28 | 中铁工程装备集团有限公司 | Shaft excavation device and construction 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 |
| CN113914864A (en) * | 2021-10-20 | 2022-01-11 | 中铁工程装备集团有限公司 | Shaft heading machine and construction method thereof |
| CN114855908A (en) * | 2022-03-25 | 2022-08-05 | 中铁工程装备集团有限公司 | Dual-mode trenching machine |
| CN117005870A (en) * | 2023-09-08 | 2023-11-07 | 中铁七局集团广州工程有限公司 | Deviation correction detection device and method for curve jacking engineering |
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Application publication date: 20210416 |