CN211648163U - Self-propelled open type shield machine system for constructing underground box culvert - Google Patents
Self-propelled open type shield machine system for constructing underground box culvert Download PDFInfo
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- CN211648163U CN211648163U CN202020104761.2U CN202020104761U CN211648163U CN 211648163 U CN211648163 U CN 211648163U CN 202020104761 U CN202020104761 U CN 202020104761U CN 211648163 U CN211648163 U CN 211648163U
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Abstract
The utility model discloses a self-propelled open shield machine system for constructing underground box culvert, which comprises an open shield machine, an excavator and a culvert body hoisting mechanism, wherein the open shield machine is arranged in a tunneling path between a starting well and a receiving well, the excavator is arranged on the ground in front of the open shield machine for soil body excavation, and the culvert body hoisting mechanism is arranged on the ground for hoisting a culvert body; the open type shield tunneling machine comprises a front tunneling cabin, a middle counter-force supporting cabin and a rear culvert body mounting cabin which are sequentially connected, and a plurality of hydraulic propulsion oil cylinders are arranged at the tail end of the front tunneling cabin. 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 middle counter-force supporting cabin generates friction force with soil bodies on two sides and the bottom through the telescopic hydraulic supporting arms, provides propelling counter-force for the hydraulic propelling oil cylinder on the front tunneling cabin, and achieves self-walking of the open type shield tunneling machine.
Description
Technical Field
The utility model belongs to the technical field of the underground box culvert, concretely relates to a from walking open shield structure machine system for executing make 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 weak point according to above-mentioned prior art, provide a from walking open shield structure machine system for executing make underground box culvert, this shield structure machine system is through adopting open shield structure machine to tunnel and utilize the hoist and mount of culvert body hoisting machine to construct the installation culvert body, in order to realize executing in narrow and small place and make underground box culvert, meanwhile through setting open shield structure machine to the anterior tunnelling cabin that connects gradually, middle part counter-force supports cabin and rear portion culvert body installation cabin, come from walking with the frictional force that realizes open shield structure machine dependence self between with the soil body all around.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
a self-propelled open shield machine system for constructing an underground box culvert is characterized by comprising an open shield machine, an excavator and a culvert body hoisting mechanism, wherein the open shield machine is arranged in a tunneling path between a starting well and a receiving well, the excavator is arranged on the ground in front of the open shield machine for soil excavation, and the culvert body hoisting mechanism is arranged on the ground for hoisting a culvert body; the open type shield tunneling machine comprises a front tunneling cabin, a middle reaction supporting cabin and a rear culvert body mounting cabin which are sequentially connected, wherein a plurality of hydraulic propulsion oil cylinders are arranged at the tail end of the front tunneling cabin, one end of each hydraulic propulsion oil cylinder is fixed on the tail end face of the front tunneling cabin, and the other end of each hydraulic propulsion oil cylinder is fixed on the front end face of the middle reaction supporting cabin.
The front two sides of the front tunneling cabin of the open type shield tunneling machine are respectively provided with a sliding type soil retaining arm, the front end part of the sliding type soil retaining arm is a wedge-shaped surface beneficial to cutting and jacking, and the rear end part of the sliding type soil retaining arm is driven by a hydraulic oil cylinder in the front tunneling cabin to slide and stretch.
The hydraulic propulsion oil cylinders are arranged along two side edge parts, a top edge part and a bottom edge part of the tail end face of the front driving cabin.
And two side wall surfaces of the middle counter-force supporting cabin are respectively provided with a telescopic hydraulic supporting arm.
The end surface of the supporting and ejecting arm is provided with a friction iron block.
The rear culvert body installation cabin comprises culvert body leading-in box chambers and tail retaining plates, the size of the culvert body leading-in box chambers is matched with the size of culvert bodies, and the culvert body leading-in box chambers comprise bottom plates and partition plates on two sides.
The shield tunneling machine system further comprises a dredger for backfilling.
Mortar injection holes are respectively arranged on the bottom surface and the two side wall surfaces of the culvert body.
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 middle counter-force supporting cabin generates friction force with soil bodies on two sides and the bottom through the telescopic hydraulic supporting arms, provides propelling counter-force for the hydraulic propelling oil cylinder on the front tunneling cabin, and achieves self-walking of the open type shield tunneling machine.
Drawings
Fig. 1 is a schematic diagram of the operation of a self-walking open shield tunneling machine system according to the present invention;
fig. 2 is a schematic plan view of the open type shield tunneling machine of the present invention;
figure 3 is the vertical section schematic view of the culvert body of the utility model.
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. 1-3, the labels 1-16 in the figures are: the device comprises an open shield machine 1, an excavator 2, a culvert body hoisting mechanism 3, a front tunneling cabin 4, a middle counter-force supporting cabin 5, a rear culvert body mounting cabin 6, a culvert body 7, a hydraulic propulsion oil cylinder 8, a hydraulic supporting arm 9, a sliding type soil retaining arm 10, a friction iron block 11, a culvert body leading-in box chamber 12, a tail soil retaining plate 13, a mortar injection hole 14, a first grouting material layer 15 and a second grouting material layer 16.
Example (b): as shown in fig. 1, 2 and 3, the present embodiment specifically relates to a self-propelled open type shield tunneling machine system for constructing an underground box culvert, which mainly comprises an open type shield tunneling machine 1, an excavator 2 and a culvert hoisting mechanism 3, wherein the open type shield tunneling machine 1 is arranged in a tunneling path between a starting well and a receiving well, the excavator 2 is arranged on the ground in front of the open type shield tunneling machine 1 to excavate and transport soil, and the culvert hoisting mechanism 3 is arranged on the ground to hoist and mount a culvert 7.
As shown in fig. 1, 2 and 3, the open shield tunneling machine 1 comprises a front tunneling cabin 4, a middle reaction supporting cabin 5 and a rear culvert body installation cabin 6 which are sequentially connected, wherein:
the front tunneling cabin 4 can cut and tunnel a soil body, sliding type soil retaining arms 10 are arranged on two sides of the front portion of the front tunneling cabin, the front ends of the sliding type soil retaining arms 10 are wedge-shaped surfaces (single-side) beneficial to cutting and jacking, the rear ends of the sliding type soil retaining arms 10 are driven by a hydraulic oil cylinder (not shown in the figure) in the front tunneling cabin 4 to slide and stretch back and forth, and the stretching of the sliding type soil retaining arms 10 is used for supporting an excavation area and controlling the gradient of a front excavation surface; meanwhile, a plurality of hydraulic propulsion cylinders 8 are arranged between the front tunneling cabin 4 and the middle counterforce support cabin 5 for connection, one end of each hydraulic propulsion cylinder 8 is fixedly connected with the tail end face of the front tunneling cabin 4, the other end of each hydraulic propulsion cylinder 8 is fixedly connected with the front end face of the middle counterforce support cabin 5, and the middle counterforce support cabin 5 can serve as a counterforce support to provide counterforce for the hydraulic propulsion cylinders 8 to propel the front tunneling cabin 4 to advance;
telescopic hydraulic supporting arms 9 are respectively arranged on two side wall surfaces of the middle counter-force supporting cabin 5, friction iron blocks 11 are arranged at the end parts of the hydraulic supporting arms 9, and the hydraulic supporting arms 9 are controlled to extend outwards and act on soil mass on the periphery of the middle counter-force supporting cabin 5, so that the friction force between the friction iron blocks 11 at the end parts of the hydraulic supporting arms 9 and the soil mass is enhanced, when the hydraulic propulsion oil cylinder 8 jacks and propels the front tunneling cabin 4, the middle counter-force supporting cabin 5 can keep in-situ and provide counter-force support for the hydraulic propulsion oil cylinder 8;
the back culvert body installation cabin 6 comprises a culvert body introduction box chamber 12 and a tail retaining plate 13 from front to back, the culvert body introduction box chamber 12 comprises a bottom plate and partition plates on two sides, and the size of an inner chamber of the culvert body introduction box chamber 12 is matched with that of the culvert body 7 so as to guide the culvert body 7 to be installed; the rear soil guard plate 13 is used for soil guard operation at the time of construction.
In order to facilitate the grouting operation of the culvert bodies 7 of the underground box culvert during the excavation process, mortar injection holes 14 are respectively formed in the bottom surface and the two side wall surfaces of each culvert body 7.
As shown in fig. 1, 2 and 3, the working method for constructing the underground box culvert by the self-propelled open shield tunneling machine system in the embodiment includes the following steps:
(1) controlling the middle counter-force support cabin 5 of the open type shield tunneling machine 1 to enable the hydraulic support arms 9 on the two side wall surfaces of the middle counter-force support cabin to extend out of peripheral soil bodies, so that the friction force between the friction iron blocks 11 of the hydraulic support arms 9 and the soil bodies is improved, and the middle counter-force support cabin 5 can be kept in a fixed position after being stressed;
(2) under the condition that the middle counter-force supporting cabin 5 provides counter-force, the hydraulic propulsion oil cylinder 8 is controlled to lift and propel the front tunneling cabin 4 to advance, the front tunneling cabin 4 tunnels in soil, the top surface of the open type shield tunneling machine 1 is flush with the ground, and the soil generated in the tunneling process is excavated by the excavator 2 and is transported out by a truck;
(3) after the front tunneling cabin 4 tunnels to reach the maximum stroke of the hydraulic propulsion oil cylinder 8, controlling the hydraulic supporting arms 9 on the middle reaction supporting cabin 5 to contract inwards so as to reduce the friction force between the hydraulic supporting cabin and the soil body, and then contracting the hydraulic propulsion oil cylinder 8 so as to drive the middle reaction supporting cabin 5 and the rear culvert body installation cabin 6 to advance, wherein the self weight of the front tunneling cabin 4 is larger so that larger friction force can be generated between the front tunneling cabin 4 and the soil body; after the middle counter-force supporting cabin 5 advances for a certain distance, hoisting the culvert body 7 to the culvert body leading-in box chamber 12 of the open shield machine 1 by using the culvert body hoisting mechanism 3, and longitudinally connecting the culvert body 7 with the culvert body 7 of the existing underground box culvert to form an integral structure; after the connection is completed, in the range of the tail retaining plate 13, performing first grouting by means of a mortar injection hole 14 formed in the culvert 7 to form a first grouting material layer 15 as shown in fig. 2 and 3, wherein the first grouting material layer 15 fills the gap between the outer wall surface of the culvert 7 and the open type shield tunneling machine 1, including the gaps at the two sides and the bottom of the culvert 7; at the same time, the periphery of the culvert body 7 behind the tail retaining plate 13 is subjected to secondary grouting through the mortar injection hole 14, so that the gap between the primary grouting material layer 15 and the soil body is filled with grout, and a secondary grouting material layer 16 shown in figures 2 and 3 is formed; it should be noted that, the upper part of the culvert body 7 which is finished with the construction is covered with backfill soil by a dredger;
(4) and (4) repeating the steps (1) to (3) to continuously lay the culvert body 7 until the construction of the whole underground box culvert is completed, and enabling the open type shield tunneling machine 1 to reach a receiving well.
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 tunneling 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 (8)
1. A self-propelled open shield machine system for constructing an underground box culvert is characterized by comprising an open shield machine, an excavator and a culvert body hoisting mechanism, wherein the open shield machine is arranged in a tunneling path between a starting well and a receiving well, the excavator is arranged on the ground in front of the open shield machine for soil excavation, and the culvert body hoisting mechanism is arranged on the ground for hoisting a culvert body; the open type shield tunneling machine comprises a front tunneling cabin, a middle reaction supporting cabin and a rear culvert body mounting cabin which are sequentially connected, wherein a plurality of hydraulic propulsion oil cylinders are arranged at the tail end of the front tunneling cabin, one end of each hydraulic propulsion oil cylinder is fixed on the tail end face of the front tunneling cabin, and the other end of each hydraulic propulsion oil cylinder is fixed on the front end face of the middle reaction supporting cabin.
2. The self-propelled line-type open shield tunneling machine system for constructing the underground box culvert according to claim 1, wherein sliding type soil-retaining arms are respectively arranged on two sides of the front part of the front tunneling compartment of the open shield tunneling machine, the front end parts of the sliding type soil-retaining arms are wedge-shaped surfaces which are beneficial to cutting and jacking, and the rear end parts of the sliding type soil-retaining arms are driven by a hydraulic oil cylinder in the front tunneling compartment to slide and stretch.
3. The self-propelled line-type open shield tunneling machine system for constructing an underground box culvert according to claim 1, wherein the hydraulic thrust cylinders are arranged along both side edge portions, the top edge portion and the bottom edge portion of the front excavation tail end face.
4. The self-propelled line-type open shield tunneling machine system for constructing an underground box culvert according to claim 1, wherein telescopic hydraulic jacking arms are respectively arranged on two side wall surfaces of the middle reaction force supporting cabin.
5. The self-propelled line-type open shield tunneling machine system for constructing an underground box culvert according to claim 4, wherein the end face of the supporting arm has a friction iron block.
6. The self-propelled line-type open shield tunneling machine system for constructing an underground box culvert according to claim 1, wherein the rear culvert body installation compartment comprises a culvert body introduction box chamber and a tail retaining plate, the size of the culvert body introduction box chamber is matched with that of the culvert body, and the culvert body introduction box chamber comprises a bottom plate and partition plates on two sides.
7. The self-propelled line-type open shield tunneling machine system for constructing an underground box culvert according to claim 1, wherein the shield tunneling machine system further comprises a back-fill excavator.
8. The self-propelled line-type open shield tunneling machine system for constructing the underground box culvert according to claim 1, wherein mortar injection holes are respectively formed on the bottom surface and the two side wall surfaces of the culvert body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104761.2U CN211648163U (en) | 2020-01-17 | 2020-01-17 | Self-propelled open type shield machine system for constructing underground box culvert |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104761.2U CN211648163U (en) | 2020-01-17 | 2020-01-17 | Self-propelled open type shield machine system for constructing underground box culvert |
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| CN211648163U true CN211648163U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020104761.2U Active CN211648163U (en) | 2020-01-17 | 2020-01-17 | Self-propelled open type shield machine system for constructing underground box culvert |
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