CN211648162U - A open shield structure machine system of impulse type for executing and do underground box culvert - Google Patents
A open shield structure machine system of impulse type for executing and do underground box culvert Download PDFInfo
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- CN211648162U CN211648162U CN202020103771.4U CN202020103771U CN211648162U CN 211648162 U CN211648162 U CN 211648162U CN 202020103771 U CN202020103771 U CN 202020103771U CN 211648162 U CN211648162 U CN 211648162U
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Abstract
The utility model discloses an open shield structure of impulse type machine system for executing and make secret box culvert, construct machine, excavator and the culvert body hoisting machine structure including open shield, open shield constructs the machine and arranges in the well of starting and receive the tunnelling route between the well, be provided with support wall and hydro-cylinder advancing mechanism in the well of starting, hydro-cylinder advancing mechanism's one end is fixed in support wall is last, the other end props up in the culvert body afterbody, the excavator is arranged in open shield constructs subaerial in machine the place ahead, the culvert body hoisting machine construct arrange in the well department of starting subaerial. The utility model has the advantages that: the construction influence range of the shield machine is smaller than that of an open cut method, and the shield machine can be used in narrow construction occasions; the hydraulic oil cylinder is adopted for propulsion, so that the noise and vibration can be reduced, the construction amplitude is small, the residue soil is less, and the construction environment is good; the open type shield machine consists of a front tunneling cabin and a rear culvert body connecting cabin which are hinged with each other, and can carry out curve construction.
Description
Technical Field
The utility model belongs to the technical field of the underground box culvert, concretely relates to open shield of impulse type constructs quick-witted system for executing and do underground box culvert.
Background
At present, most of urban underground box culverts are constructed by adopting a construction mode of slope-laying excavation and support cast-in-place, and the mode has the disadvantages of large field workload, difficult guarantee of the on-site pouring quality of the underground box culverts, long maintenance time of the underground box culverts, great influence on the surrounding environment and the like; recently, the construction modes of prefabrication in factories, transportation of underground box culverts and on-site assembly and tensioning are started, and the mode adopts the hoisting modes of slope excavation by an excavator on site, transportation of conventional trailers, truck cranes or crawler cranes and the like for the underground box culverts. Due to the problems that the side of the underground box culvert foundation pit is large in attached slope and bears on the attached slope, the crane is far away in station position and can only lift and assemble the underground box culvert with small tonnage.
In addition, the hoisting steel wire rope is long, so that the assembly precision of the underground box culvert is influenced. With the increasing maturity of shield machine excavation technology and prefabricated box culvert technology, how to comprehensively apply the mature technology to perform safe, economic and efficient prefabricated underground box culvert construction is a problem to be solved urgently.
Disclosure of Invention
The utility model aims at providing a propulsion open shield constructs quick-witted system for executing and constructs as underground box culvert according to the weak point of above-mentioned prior art, this shield constructs quick-witted system and constructs the machine through adopting open shield and tunnel and utilize the hoist and mount of the body hoisting mechanism of culvert body and install the culvert body to realize executing and constructing underground box culvert in narrow and small place, meanwhile advance the jacking that the body of culvert and open shield constructs the machine through setting up hydro-cylinder advancing mechanism in the well of starting.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides an open shield structure of impulse type machine system for executing and do secret box culvert, its characterized in that the shield structure machine system includes open shield structure machine, excavator and culvert body hoisting machine and constructs, open shield structure machine arranges in the tunnelling route between originating well and the receiving well, be provided with supporting wall and hydro-cylinder advancing mechanism in originating the well, hydro-cylinder advancing mechanism's one end is fixed in on the supporting wall, the other end props up in the culvert body afterbody, excavator arrange in open shield structure machine the place ahead subaerial, culvert body hoisting machine construct arrange in originating the subaerial of well department.
The support wall comprises a wall surface of the starting well and a reaction support frame fixed on the wall surface, and the end part of the oil cylinder propelling mechanism is fixed on the reaction support frame.
And a guide track for the culvert body to slide is arranged on the ground of the starting well.
Open shield constructs machine includes mutual articulated anterior tunnelling cabin and rear culvert body linkage cabin, the anterior both sides in anterior tunnelling cabin are provided with the gliding soil retaining arm respectively, the front end portion that the gliding soil retaining arm is and does benefit to the wedge face that the cutting top advances, the rear end portion that the gliding soil retaining arm is by being located hydraulic cylinder drive in the anterior tunnelling cabin slides and stretches out and draws back.
The oil cylinder propelling mechanism comprises at least two rows of hydraulic propelling oil cylinders and a row of hydraulic propelling oil cylinders at the bottom, one end of each hydraulic propelling oil cylinder is fixed to the supporting wall and the other end of each hydraulic propelling oil cylinder are fixedly provided with axial iron jacking blocks, and the iron jacking blocks are used for being in contact with the tail end face of the culvert body when the hydraulic propelling oil cylinders are jacked.
The shield tunneling machine system further comprises a dredger for backfilling.
The width of the open type shield machine is the same as that of the culvert body.
Mortar injection holes are respectively arranged on the bottom surface and the two side wall surfaces of the culvert body.
And injection holes are respectively formed in the bottom of the machine body and two side wall surfaces of the open type shield tunneling machine, and a friction reducer is injected into a gap between the machine body and an outer side soil body through the injection holes.
The utility model has the advantages that: (1) the construction influence range of the shield machine is smaller than that of an open cut method, and the shield machine can be used in narrow construction occasions; (2) the hydraulic oil cylinder is adopted for propulsion, so that the noise and vibration can be reduced, the construction amplitude is small, the residue soil is less, and the construction environment is good; (3) the open type shield machine consists of a front tunneling cabin and a rear culvert body connecting cabin which are hinged with each other, and can carry out curve construction; (4) the open type shield machine can be covered with a lane plate, and the road surface can be opened outside the working time.
Drawings
Fig. 1 is a schematic construction diagram of the open type shield tunneling machine system of the present invention;
fig. 2 is a schematic plan view of the open shield tunneling machine of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example with reference to the accompanying drawings, for the understanding of those skilled in the art:
referring to fig. 1-2, the labels in the figure are: the open type shield tunneling machine comprises an open type shield tunneling machine 1, a culvert body hoisting mechanism 2, an excavator 3, a culvert body 4, a starting well 5, a guide rail 6, a top iron block 7, a thrust cylinder 8, a counter-force support frame 9, a wall surface 10, a front tunneling cabin 11, a hinge mechanism 12, a rear culvert body connecting cabin 13, a sliding type soil retaining arm 14 and a mortar injection hole 15.
Example (b): as shown in fig. 1 and 2, the embodiment specifically relates to a propulsion open type shield tunneling machine system for constructing an underground box culvert, which mainly comprises an open type shield tunneling machine 1, an excavator 3 and a culvert body hoisting mechanism 2, wherein the open type shield tunneling machine 1 is arranged in a tunneling path between a starting well 4 and a receiving well, a supporting wall and an oil cylinder propulsion mechanism are arranged in the starting well, the open type shield tunneling machine 1 pushes a culvert body 4 at the tail part of the open type shield tunneling machine through the oil cylinder propulsion mechanism so as to realize forward propulsion, the excavator 3 is arranged on the ground in front of the open type shield tunneling machine 1 to excavate and move a soil body, and the culvert body hoisting mechanism 2 is arranged on the bottom surface of the starting well 5 to hoist and mount the culvert body 4.
As shown in fig. 1 and 2, the open shield tunneling machine 1 comprises a front tunneling compartment 11 and a rear culvert connecting compartment 13 which are hinged through a hinge mechanism 12, and the front tunneling compartment 11 and the rear culvert connecting compartment 13 can be relatively bent to perform curve construction through the left-right and up-down stroke difference of the hinge mechanism 12;
the front tunneling cabin 11 can cut and tunnel a soil body, sliding type soil retaining arms 14 are arranged on two sides of the front portion of the front tunneling cabin, the front ends of the sliding type soil retaining arms 14 are wedge-shaped surfaces (single-side) beneficial to cutting and jacking, the rear ends of the sliding type soil retaining arms 14 are driven by a hydraulic oil cylinder located in the front tunneling cabin 11 to slide and stretch back and forth, and the stretching of the sliding type soil retaining arms 14 is used for supporting an excavation area and controlling the gradient of a front excavation surface; the rear culvert connecting cabin 13 is mainly used for fixedly connecting with the front end of the culvert 4, and the width of the culvert 4 is the same as that of the open shield machine 1 in the embodiment.
As shown in fig. 1, a supporting wall and a cylinder propelling mechanism are arranged in the originating well 5, the supporting wall specifically comprises a reinforced hardened wall surface 10 and a reaction force supporting frame 9 fixed on the wall surface 10; meanwhile, an oil cylinder propelling mechanism pointing to the tunneling direction is fixedly arranged on the counter-force support frame 9, the oil cylinder propelling mechanism is provided with a left hydraulic propelling oil cylinder 9 and a right hydraulic propelling oil cylinder 9 which are arranged in two rows on the counter-force support frame 9, and a row of hydraulic propelling oil cylinders 9 at the bottom, one end of each hydraulic propelling oil cylinder 9 is fixed on the counter-force support frame 9, the other end of each hydraulic propelling oil cylinder 9 is fixedly provided with an axial iron jacking block 7, the hydraulic propelling oil cylinders 9 on the same row are connected into a whole by the axial iron jacking blocks 7, the iron jacking blocks 7 are used for contacting with the tail end surface of the culvert body 4 and jacking the culvert body when the hydraulic propelling oil cylinders 9 jack, in addition, the culvert body 4 which is arranged for being hung can move in the starting well 5, and a guide rail 6 for.
As shown in fig. 1 and 2, it should be noted that in order to inject a lubricating material around the culvert 4 in the pushing process so as to facilitate the pushing, and to inject a synchronous grouting material around the culvert 4 after the pushing is completed, mortar injection holes 15 are respectively formed on the side wall surface and the bottom surface of each culvert 4, and the grouting material is used for keeping the surrounding soil stable after being solidified, so as to reduce the influence of the tunneling construction on the surrounding soil.
Injection holes are respectively arranged on the bottom of the machine body and two side wall surfaces of the open type shield machine, and a friction reducing agent is filled in a gap between the machine body and an outer side soil body through the injection holes, wherein the friction reducing agent can be mortar or bentonite.
As shown in fig. 1 and 2, the working method for constructing the underground box culvert by the propulsion open type shield tunneling machine system in the embodiment includes the following steps:
(1) the open type shield machine 1 utilizes a front tunneling cabin 11 to tunnel into soil from a starting well 5, the top surface of the open type shield machine 1 is flush with the ground, and the soil generated in the tunneling process is excavated by the excavator 3 and is transported out by a truck;
(2) hoisting a first culvert body 4 to a guide rail 6 in an originating well 5 by using a culvert body hoisting mechanism 2, pushing the first culvert body 4 forwards by using an oil cylinder propelling mechanism and enabling the first culvert body 4 to be opposite to the tail end face of the open shield machine 1, and connecting the front end face of the culvert body 4 with a culvert body connecting cabin 13 at the rear part of the open shield machine 1; meanwhile, lubricating materials are injected into the two sides and the bottom surface of the culvert body 4 through the mortar injection holes 15 on the culvert body 4 so as to facilitate the propulsion of the culvert body;
(3) after the first section of culvert body 4 is connected with the open type shield tunneling machine 1, the culvert body 4 and the open type shield tunneling machine 1 are pushed forward by using the oil cylinder propelling mechanism for a certain distance, then the oil cylinder propelling mechanism is retracted, the culvert body hoisting mechanism 2 is used for hoisting the second section of culvert body 4 to a guide track in the starting well 5, and the oil cylinder propelling mechanism is used for pushing the second section of culvert body 4, the first section of culvert body 4 in front of the second section culvert body and the open type shield tunneling machine 1 forward again; the steps are repeated until all the culvert bodies 4 are pushed, the open type shield machine 1 reaches a receiving well, and in the pushing process, lubricating materials are injected into two sides and the bottom surface of each culvert body 4 through the mortar injection holes 15 on the culvert bodies 4 so as to facilitate the pushing of the culvert bodies;
(4) and after the integral jacking of the underground box culvert is completed, covering backfill soil on the ground by using a backfill soil excavator.
The embodiment is particularly suitable for building and rebuilding drainage channels and river channels in narrow urban areas, can approach important buildings under the severe construction conditions of abundant soft soil and underground water, such as railway, national roads, bridges, iron towers, rainwater storage pipelines and other construction operations, and realizes safe and reliable rapid construction. Conventional ripping equipment can damage the back soil during the machine propulsion process, and the degree of impact has become a construction problem. The advantages are that:
(1) the construction with small curves can be carried out.
(2) Can be constructed in the proximity range of buildings and other structures.
(3) The construction method can be used for constructing weak formations and water-bearing formations.
(4) The top of the shield machine can be opened.
(5) The construction method has low noise and vibration.
(6) The construction range is small, the environmental influence is low, and the slag soil or the piled soil generated on the site is little, so the method is an environment-friendly method.
(7) The existing underground structure can be penetrated.
(8) The existing water channel can be easily repaired.
(9) The construction method has little influence on surrounding residents and traffic.
(10) The shield machine may be left in the ground.
(11) The construction period can be shortened.
(12) Safe and economical.
The open shield construction method and the open excavation method in the embodiment have the advantages that:
(1) compared with the prior art, the construction surface is small, and the amount of the produced muck is small.
(2) The special sheet pile plugging operation of a steel sheet pile maintenance method, namely the pressing-in and drawing-out operation of the steel sheet pile is not needed, and the influence on the ground and the surrounding ground is small.
(3) In the open shield construction method, plastic materials are used for filling gaps at the side and the bottom of the box culvert in real time, and the open excavation method causes the inner part of the box culvert to be loose because the backfill materials at the side of the box culvert cannot be compacted.
(4) Because the side plates and the bottom plate of the open shield machine form a soil body maintenance structure, surrounding rocks are excavated, disasters such as gushing of soil bodies and sand boiling piping are basically avoided, and the safety of box culvert construction operation can be ensured.
(5) Compared with the open cut method, the open section has short operation time, small construction operation surface, less collapse accidents and third-party disaster accidents and higher safety.
Claims (9)
1. The utility model provides an open shield structure of impulse type machine system for executing and do secret box culvert, its characterized in that the shield structure machine system includes open shield structure machine, excavator and culvert body hoisting machine and constructs, open shield structure machine arranges in the tunnelling route between originating well and the receiving well, be provided with supporting wall and hydro-cylinder advancing mechanism in originating the well, hydro-cylinder advancing mechanism's one end is fixed in on the supporting wall, the other end props up in the culvert body afterbody, excavator arrange in open shield structure machine the place ahead subaerial, culvert body hoisting machine construct arrange in originating the subaerial of well department.
2. The system of claim 1, wherein the support wall comprises a wall of the launch well and a reaction support frame secured to the wall, and wherein the ends of the cylinder propulsion mechanism are secured to the reaction support frame.
3. The system of claim 1, wherein the ground of the originating well is provided with a guide track for the culvert body to slide.
4. The system of claim 1, wherein the open shield tunneling machine comprises a front tunneling compartment and a rear culvert body connecting compartment hinged to each other, sliding soil-retaining arms are respectively disposed on two sides of the front portion of the front tunneling compartment, the front end portions of the sliding soil-retaining arms are wedge-shaped surfaces facilitating cutting and jacking, and the rear end portions of the sliding soil-retaining arms are driven by a hydraulic cylinder located in the front tunneling compartment to slide and stretch.
5. The system of claim 1, wherein the cylinder propulsion mechanism comprises at least two rows of hydraulic propulsion cylinders and a bottom row of hydraulic propulsion cylinders, one end of each hydraulic propulsion cylinder is fixed to the support wall, the other end of each hydraulic propulsion cylinder is fixedly provided with an axial iron jacking block, and the iron jacking blocks are used for contacting with the tail end surface of the culvert body when the hydraulic propulsion cylinders jack up.
6. The propelled open shield tunneling system for constructing an underground box culvert according to claim 1, wherein the shield tunneling system further comprises a backfill excavator.
7. The system of claim 1, wherein the open shield machine has a width that is the same as the width of the culvert body.
8. The system of claim 1, wherein the bottom surface and the two side walls of the culvert body are respectively provided with mortar injection holes.
9. The system of claim 1, wherein the bottom and two side walls of the open shield machine are provided with injection holes respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103771.4U CN211648162U (en) | 2020-01-17 | 2020-01-17 | A open shield structure machine system of impulse type for executing and do underground box culvert |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103771.4U CN211648162U (en) | 2020-01-17 | 2020-01-17 | A open shield structure machine system of impulse type for executing and do underground box culvert |
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| CN211648162U true CN211648162U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020103771.4U Active CN211648162U (en) | 2020-01-17 | 2020-01-17 | A open shield structure machine system of impulse type for executing and do underground box culvert |
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