CN101092878B - Main duct construction method laid down tunnel structure article - Google Patents

Main duct construction method laid down tunnel structure article Download PDF

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Publication number
CN101092878B
CN101092878B CN2007100868387A CN200710086838A CN101092878B CN 101092878 B CN101092878 B CN 101092878B CN 2007100868387 A CN2007100868387 A CN 2007100868387A CN 200710086838 A CN200710086838 A CN 200710086838A CN 101092878 B CN101092878 B CN 101092878B
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CN
China
Prior art keywords
trunk line
cut
conduit
initial
underground
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CN2007100868387A
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Chinese (zh)
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CN101092878A (en
Inventor
金正允
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株式会社Ntsenc
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Priority to KR1020060056427A priority Critical patent/KR100781357B1/en
Priority to KR1020060056427 priority
Priority to KR10-2006-0056427 priority
Priority to KR10-2006-0116340 priority
Priority to KR1020060116340 priority
Priority to KR1020060116340A priority patent/KR100768243B1/en
Application filed by 株式会社Ntsenc filed Critical 株式会社Ntsenc
Publication of CN101092878A publication Critical patent/CN101092878A/en
Application granted granted Critical
Publication of CN101092878B publication Critical patent/CN101092878B/en

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Abstract

The invention discloses a main pipe construction method for establishing the tunnel formation, comprising following steps: pushing down a leading pipe and an initial main pipe underground; preventing landslide; conveying the next main pipe whose outer diameter is far smaller than the initial pipe to the inside of the main pipe setting space; expanding the diameter of the next main pipe to make it the same as the diameter of the initial main pipe; connecting the next main pipe after expansion treatment with the front end of the initial main pipe; repeating the connection operation of the next main pipe for establishing the tunnel formation. The technique scheme is able to construct in a direct or curve way, swift, safe and simple.

Description

Lay the trunk line job practices of tunnel construction thing

Technical field

The present invention relates to for easy, lay the straight line of adaptation to the ground or underground condition design or the trunk line job practices that is used to lay the tunnel construction thing that the tunnel of tracing pattern must carry out in advance fast, securely, this method specifically, compare the applicant korean patent application 2004-91846 number of first to file and patent application 2005-101768 number, can further significantly curtail expenditure, can finish the trunk line construction easier, more rapidly, more safely.

Background technology

In general, in order to lay the tunnel, the tunnel construction thing that must setting can bear the tunnel external stress, almost all be after carrying out the tunnelling of certain depth in advance in the past, utilize crossbeam (beam) or iron plate or angle block etc. to set up engineering, the tunnel construction thing is set then, carries out above job practices so repeatedly, finish the tunnel and lay.

But, this tunnel in the past laying method, the tunnel still curve that is in line no matter, its method is all quite complicated, and occurs the setting of ground of mine working portion and the underground water phenomenon of gushing out easily, not only be not easy to carry out operation, and potential safety hazard is very big.

In addition, need a large amount of manpowers and equipment and building materials, therefore very uneconomical.

In addition to the above methods, do not dig out sandy soil in addition earlier, force to be pressed into a certain number of trunk line in the long distance of lower edge, ground tunnel line earlier, and connect these trunk lines by stress material, portion's reinforcement placing concrete within it is provided with the tunnel construction thing then, and it is fully met with stresses in advance, excavate this tunnel construction thing inboard then, form the method in tunnel.But, this method is underground forced when being pressed into trunk line, if trunk line length is long, then can't continue to be pressed into, therefore subsequent job is very difficult and inconvenient, the most important thing is long can't the connection along curve trunk line is set, be difficult to form the tunnel of pressing the curve design apart from the method that is pressed into trunk line.

At the problems referred to above, the applicant in korean patent application 2004-91846 number of first to file and patent application 2005-101768 number publicity underground rapid, easy, lay the specific process and the constructing structure thereof of a plurality of trunk lines along straight line or curve safely.Said method is provided with the tunnel construction thing for the variform with adaptation to the ground or underground condition, utilize hydraulic jack underground be pressed into first conduit and initial trunk line simultaneously after, utilize the oil/pneumatic cylinder between the reaction platform that guide's pipe internal surface and initial trunk line inner surface be provided with, behind first conduit propelling certain distance, by the trunk line that forms the space is set, connect next trunk line, the trunk line that is used to be provided with the tunnel construction thing is laid in above-mentioned so repeatedly operation.In the said method, must be when being pressed into first conduit and initial trunk line, dig out the soil in the first conduit, prevent the plate input port by the landslide that forms on the first conduit simultaneously, the soil of outer periphery is dug out, drop into successively then and connect landslide and prevent plate, and prevent to be in the milk with cement paste on the plate in landslide, it is identical forming the step that prevents the grouting portion of caving in.Wherein, the applicant is in the korean patent application of first to file 2004-91846 number, with the next trunk line that is divided into a plurality of parts be transported to insert the trunk line that forms in the underground first conduit and be provided with in the space after, again these parts are welded as again a homogeneous tube, and its rear end is welded to the initial trunk line front end that has inserted, start the oil/pneumatic cylinder in the next trunk line that is arranged at the tube shape welding once more then, by being pressed into the reaction force of underground existing trunk line, first conduit is pushed ahead certain distance, and the space is set by the trunk line that forms, connect another trunk line that is divided into a plurality of parts is set, above-mentioned repeatedly so continuously operation, by the tunnel-shaped of design, trunk line is set with straight line or the long distance connection of curve.

On the other hand, the applicant is in the korean patent application of first to file 2005-101768 number, the front and back both side ends is all welded the circular arc downside iron plate that is provided with soil pressure brace table backing plate to be transported to the trunk line that first catheter-shaped becomes interior volume is set, and the rear end is welded to the initial trunk line front end that has inserted, soil pressure brace table (pillar) vertically is set on soil pressure brace table backing plate then, the upside of side carrying thereon iron plate, soil pressure brace table backing plate is installed to be welded, simultaneously the rear end of upside iron plate is welded to the front end of initial trunk line, to landslide be set in insertion on the soil pressure brace table of the left and right sides and prevent that the next trunk line that plate forms is welded on the initial trunk line that has been provided with, start the oil/pneumatic cylinder in the next trunk line that is arranged at the tube shape welding once more then, by the reaction force that is pressed into underground existing trunk line first conduit is pushed ahead certain distance, and the space is set by the trunk line that forms, connect and be provided with on the next circular arc, downside iron plate, above-mentioned repeatedly so continuously operation, with the tunnel-shaped of design, in underground long distance connection trunk line is set along straight line or curve.

As mentioned above, use the applicant in korean patent application 2004-91846 number of first to file and the method for 2005-101768 number prompting of patent application, can compare other method in the past, rapider, easy, be used to the tunnel construction thing is set and necessary prior a plurality of trunk lines along straight line or curve laying safely at underground construction, therefore not only the setting of tunnel construction thing becomes easy, and not limited by straight line or curve according to the tunnel of landform or underground condition design, only use a small amount of manpower and equipment and the building materials can be easy, fast, firmly construct according to the tunnel form of design.

Though the applicant has above-mentioned advantage and characteristics in the invention of first to file, but be provided with in the space owing to be transported to the trunk line that inserts formation in the underground first conduit, the diameter of follow-up trunk line that the initial trunk line the place ahead that has been provided with in first conduit connects setting successively is all identical with initial trunk line, therefore in order to make it can pass through initial trunk line inside, must earlier follow-up trunk line be cut, be divided into a plurality of parts, the part needs of cutting apart are carried respectively, need after the carrying it is welded again, therefore not only operation is loaded down with trivial details, be difficult for inserting follow-up trunk line, but also need more manpower to take and cost of materials.

Summary of the invention

The present invention seeks to further develop the applicant korean patent application 2004-91846 number of first to file and patent application 2005-101768 number with These characteristics, a kind of trunk line job practices that is used to lay the tunnel construction thing is provided, it not only significantly cuts down material usage, and with still less manpower and equipment, easier, lay a plurality of trunk lines that are used to the tunnel construction thing is set and must construct in advance more rapidly, more safely.

The invention provides a kind of trunk line job practices of laying the tunnel construction thing, it is characterized in that, in order to lay the tunnel construction thing with the variform that is fit to landform or underground condition, will be long underground along straight line or curve apart from being connected in by the circular trunk line that the steel pipe that is cut into specific length constitutes, this method comprises the steps:

Conduit inner surface and being inserted in before and after the inside of the initial trunk line in the first conduit formerly, the a certain number of reaction platform of mutual correspondence is set with predetermined distance respectively, be respectively arranged with between the reaction platform of direction of propulsion both sides under the state of oil/pneumatic cylinder load, utilize hydraulic jack, be pushed down into the step of guide's pipe and initial trunk line on ground;

When being pressed into first conduit and initial trunk line, prevent the soil of plate input port around digging out by the landslide that forms on the first conduit, drop into successively and connect landslide and prevent plate, and on landslide prevents plate, water cement grouting, form grouting portion, with the step that prevents to cave in;

Under the state of removing the oil/pneumatic cylinder that is provided with on the initial trunk line, external diameter is cut the formation cut much smaller than a side of the next one first trunk line of initial trunk line internal diameter along the pipeline direction of propulsion, reserve a part of both side ends simultaneously and form not cut, then it is transported to the step that trunk line is provided with interior volume;

The not cut incision of residue that trunk line is provided with the next one first trunk line of interior volume will be transported to, after cutting fully along its length, at section or pipe interior cut expansion hydraulic jack is set, hydraulic jack is started, enlarge pipe diameter in the time of the expansion cut, make the identical step of diameter of diameter with the initial trunk line of next first trunk line;

After the rear end of the next one first trunk line that will handle through expander is welded to the front end of initial trunk line, vertical topography is set or around the soil pressure brace table of form or annulus form in the cut of expansion, perhaps elder generation is provided with the soil pressure brace table in the cut of the expansion of the next one first trunk line of handling through expander, then the rear end of next first trunk line is welded to the front end of initial trunk line, thereby will connects the step that is set to the initial trunk line front end that has inserted through the next one first trunk line that expander is handled;

Removing the cut expansion with under the state of hydraulic jack, utilization is relocated onto the oil/pneumatic cylinder between the reaction platform of guide's pipe internal surface and the next first trunk line inner surface, first conduit is advanced certain-length, form trunk line the space is set, next second trunk line is connected to first trunk line again, on second trunk line, connect next the 3rd trunk line then again, carry out this operation repeatedly, according to the tunnel-shaped of design, in the underground step that connects the trunk line that is provided for laying the tunnel construction thing with the long distance of straight line or curve.

The present invention also provides another to lay the trunk line job practices of tunnel construction thing, it is characterized in that, in order to lay the tunnel construction thing with the variform that is fit to landform or underground condition, will be long underground along straight line or curve apart from being connected in by the circular trunk line that the steel pipe that is cut into specific length constitutes, this method comprises the steps:

Formerly before and after the inside of the initial trunk line of conduit inner surface and insertion, the a certain number of reaction platform of mutual correspondence is set with predetermined distance respectively, be respectively arranged with under the state of oil/pneumatic cylinder load between the reaction platform of direction of propulsion both sides, utilizing hydraulic jack to be pushed down into the step of guide's pipe and initial trunk line on ground;

When being pressed into first conduit and initial trunk line, prevent the soil of plate input port around digging out by the landslide that forms on the first conduit, drop into successively and connect landslide and prevent plate, and on landslide prevents plate, water cement grouting, form grouting portion, with the step that prevents to cave in;

Under the state of removing the oil/pneumatic cylinder that is provided with on the initial trunk line, formerly the conduit inner surface is provided with the step that a certain number of supply power can have the electromagnet of magnetic;

External diameter is cut the formation cut much smaller than a side of the next one first trunk line of initial trunk line internal diameter along the pipeline direction of propulsion, reserve a part of both side ends simultaneously and form not cut, then it is transported to the step that trunk line is provided with interior volume;

The not cut incision of residue that trunk line is provided with the next one first trunk line of interior volume will be transported to, after cutting fully along its length, to the electromagnet supply power that is arranged on guide's pipe internal surface, make it have very strong magnetic, utilize strong magnetic attraction body, make cut expansion time enlarge pipe diameter, make next first trunk line have step with initial trunk line same diameter;

After the rear end of the next one first trunk line that will handle through expander is welded to the front end of initial trunk line, vertical topography is set or around the soil pressure brace table of form or annulus form in the cut of expansion, perhaps elder generation is provided with the soil pressure brace table in the cut of the expansion of the next one first trunk line of handling through expander, then the rear end of next first trunk line is welded to the front end of initial trunk line, thereby will connects the step that is set to the initial trunk line front end that has inserted through the next one first trunk line that expander is handled;

Utilization is relocated onto the oil/pneumatic cylinder between the reaction platform of guide's pipe internal surface and the next first trunk line inner surface, first conduit is advanced certain-length, form trunk line the space is set, next second trunk line is connected to first trunk line again, on second trunk line, connect next the 3rd trunk line then again, carry out this operation repeatedly, will be used to lay the tunnel-shaped of the trunk line of tunnel construction thing, in underground step with straight line or curve long distance construction according to design.

Description of drawings

Fig. 1 a to Fig. 1 h is the job engineering figure that realizes the 1st embodiment of the present invention: wherein,

Fig. 1 a is the view that is pushed down into first conduit and trunk line at the state that advances oil/pneumatic cylinder;

Fig. 1 b is when being pressed into first conduit and trunk line, landslide is set prevents plate, prevents the view of caving in;

Fig. 1 c is that the trunk line that forms in first conduit is provided with carrying diameter in the space and is formed with cut and the view before the next one first trunk line of cut not less than initial trunk line and in the side;

Fig. 1 d utilizes cut expansion will be transported to trunk line with hydraulic jack the next one first trunk line expander in the space to be set to the process schematic diagram identical with initial trunk line diameter;

Fig. 1 e will be connected in the process schematic diagram of initial trunk line through the next one first trunk line of expander processing;

Fig. 1 f advances first conduit once more, after the formation trunk line is provided with the space, carries next again second trunk line process schematic diagram before;

Fig. 1 g connects the process schematic diagram that next again second trunk line of handling through expander is set;

Fig. 1 h is after connecting next again second trunk line of setting, the view of removing interim soil pressure brace table in the soil pressure brace table that is arranged on the previous first trunk line cut.

Fig. 2 a to Fig. 2 i is the job engineering figure that realizes the 2nd embodiment of the present invention: wherein,

Fig. 2 a is the view that is pushed down into first conduit and trunk line at the state that advances oil/pneumatic cylinder;

Fig. 2 b is when being pressed into first conduit and trunk line, landslide is set prevents plate, prevents the view of caving in;

Fig. 2 c is after the trunk line of the interior formation of conduit formerly is provided with the space, and the view of electromagnet is set;

Fig. 2 d is that the trunk line that forms in first conduit is provided with carrying diameter in the space and is formed with cut and the view before the next one first trunk line of cut not less than initial trunk line and in the side;

Fig. 2 e utilizes electromagnet will be transported to trunk line the next one first trunk line expander in the space to be set to the process schematic diagram identical with initial trunk line diameter;

Fig. 2 f will be connected in the process schematic diagram of initial trunk line through the next one first trunk line of expander processing;

Fig. 2 g advances first conduit once more, after the formation trunk line is provided with the space, carries next again second trunk line process schematic diagram before;

Fig. 2 h connects the process schematic diagram that next again second trunk line of handling through expander is set;

Fig. 2 i is after connecting next again second trunk line of setting, the view of removing interim soil pressure brace table in the soil pressure brace table that is arranged on the previous first trunk line cut.

Fig. 3 a, Fig. 3 b be the present invention according to underground condition, select to be pressed into the embodiment schematic diagram of gutter or grout pipe: wherein,

Fig. 3 a discharges phreatic view by gutter to the outside;

Fig. 3 b pours into cement paste by grout pipe, improves the view of ground or formation waterproof film.

Fig. 4 a to Fig. 6 c is that the present invention is provided with a side trunk line and opposite side trunk line by the connection of waterproof iron plate, thereby realizes the embodiment schematic diagram of waterproof effect.

Reference numeral

10: first conduit, 11: landslide prevents the plate input port, 12: landslide prevents plate, 13: grouting portion, 20 (20a, 20b, 20c): trunk line, 21,21 ': cut, 22: cut not, 23,23a, 23b: soil pressure brace table, 26a: steel pipe tube connector, 26b: reinforcing bar, 26c: crossbeam (beam), 27: iron plate, 28: stress material patchhole, 30: oil/pneumatic cylinder, 31,32: the reaction platform, 40: hydraulic jack, 45: the cut expansion is used hydraulic jack, 50: argillic horizon, 60: cut expansion electromagnet, 70: gutter, 70a: through hole, 80: grout pipe; 81: cement paste, 100: underground; 200: trunk line is provided with the space; 300: stress material; 400: waterproof iron plate.

The specific embodiment

The trunk line job practices that is used to lay the tunnel construction thing that the present invention relates to that proposes for achieving the above object can be divided into embodiment 1 and embodiment 2, further describes with reference to accompanying drawing.

Embodiment 1

The present invention is in order to lay the tunnel construction thing with the variform that is fit to landform or underground condition, to be connected in underground along straight line or the long distance of curve by the circular trunk line that the steel pipe that is cut into specific length constitutes, comprise: as shown in Figure 1a, conduit 10 inner surfaces and being inserted in before and after the initial trunk line 20a inside in the first conduit 10 formerly, the a certain number of reaction platform 31 of mutual correspondence is set with predetermined distance respectively, 32, reaction platform 31 in the direction of propulsion both sides, be respectively arranged with between 32 under the state of oil/pneumatic cylinder 30 loads, utilize hydraulic jack 40, in underground 100 steps that are pressed into first conduit 10 and initial trunk line 20a; As shown in Figure 1a, when being pressed into first conduit 10 and initial trunk line 20a, prevent the soil of plate input port 11 around digging out by the landslide that forms on the first conduit 10, then shown in Fig. 1 b, drop into successively and connect landslide and prevent plate 12, and on landslide prevents plate 12, water cement grouting, form grouting portion 13, with the step that prevents to cave in; Shown in Fig. 1 c, under the state of removing the oil/pneumatic cylinder 30 that is provided with on the initial trunk line 20a, external diameter is cut formation cut 21 much smaller than the side of the next one first trunk line 20b of initial trunk line 20a internal diameter along the pipeline direction of propulsion, reserve a part of both side ends simultaneously and form not cut 22, then it is transported to the step that trunk line is provided with 200 inside, space; Shown in Fig. 1 d, not cut 22 incisions of residue that trunk line is provided with the next one first trunk line 20b of 200 inside, space will be transported to, after cutting off (incision) fully along its length, at section or pipe interior cut expansion hydraulic jack 45 is set, make its startup, enlarge pipe diameter in the time of expansion cut 21, make the diameter of the next first trunk line 20b and the initial identical step of diameter of trunk line 20a; Shown in Fig. 1 e, after the rear end of the next one first trunk line 20b that will handle through expander is welded to initial trunk line 20a front end, vertical topography is set or around the soil pressure brace table 23 of variforms such as form or annulus form in the cut 21 of expansion, perhaps elder generation is provided with soil pressure brace table 23 in the cut 21 of the expansion of the next one first trunk line 20b that handles through expander, then the rear end of the next first trunk line 20b is welded to the front end of initial trunk line 20a, thereby will connects the step that is set to the initial trunk line 20a front end that has inserted through the next one first trunk line 20b that expander is handled; Shown in Fig. 1 f, removing the cut expansion with under the state of hydraulic jack 45, utilization is relocated onto the reaction platform 31 of first conduit 10 inner surfaces and the setting of the next first trunk line 20b inner surface, oil/pneumatic cylinder 30 between 32, first conduit 10 is advanced certain-length, form trunk line space 200 is set, shown in Fig. 1 g, the next second trunk line 20c is connected to the first trunk line 20b again, then shown in Fig. 1 h, on the second trunk line 20c, connect next the 3rd trunk line 20d, carry out this operation repeatedly, to be used to lay the tunnel-shaped of the trunk line 20 of tunnel construction thing, carry out the step of long distance construction with straight line or curve underground 100 according to design.

Namely; The present invention is in order to lay the tunnel construction thing with the variform that is fit to landform or underground condition; For as shown in Figure 1a; Utilize hydraulic jack 40 underground be pressed into simultaneously first conduit 10 and initial trunk line 20a after; The oil that arranges between the reaction platform 31,32 that utilizes first conduit 10 inner surfaces and initial trunk line 20a inner surface to arrange/air pressure cylinder 30; First conduit 10 is advanced a set a distance; By the trunk line that forms space 200 is set and connects the next first trunk line 20b; Repeatedly above-mentioned operation; Supervisor's pipeline construction method of tunnel construction thing is set

As shown in Figure 1a, when being pressed into first conduit 10 and initial trunk line 20a, carry out preventing the soil of plate input port 11 around digging out by the landslide that forms on the first conduit 10, then shown in Fig. 1 b, drop into successively and connect landslide and prevent plate 12, and on landslide prevents plate 12, water cement grouting, form grouting portion 13, with the step that prevents to cave in;

The trunk line that forms in the first conduit 10 of insertion underground 100 is provided with the next first trunk line 20b of space 200 inner carryings, when connecting operation, carry out shown in Fig. 1 c, external diameter is cut formation cut 21 much smaller than the side of the next one first trunk line 20b of initial trunk line 20a internal diameter along the pipeline direction of propulsion, reserve a part of both side ends simultaneously and form not cut 22, then this next first trunk line 20b is transported to the step that trunk line is provided with 200 inside, space;

Shown in Fig. 1 d, with not cut 22 incisions of residue of not cutting, after cutting off fully, at section or pipe interior cut expansion hydraulic jack 45 is set, it is started, enlarge pipe diameter in the time of expansion cut 21, make itself and the initial identical step of diameter of trunk line 20a;

Shown in Fig. 1 e, after the rear end of the next one first trunk line 20b that will handle through expander is welded to initial trunk line 20a front end, vertical topography is set or around the soil pressure brace table 23 of form or annulus form in the cut of expansion, perhaps elder generation is provided with soil pressure brace table 23 in the cut 21 of the expansion of the next one first trunk line 20b that handles through expander, then the rear end of the next first trunk line 20b is welded to the front end of initial trunk line 20a, thereby the next first trunk line 20b is connected the step that is set to the initial trunk line 20a front end that has inserted;

Shown in Fig. 1 f, utilization is relocated onto the reaction platform 31 of first conduit 10 inner surfaces and the setting of the next first trunk line 20b inner surface, oil/pneumatic cylinder 30 between 32, first conduit 10 is advanced certain-length, form trunk line space 200 is set, shown in Fig. 1 g, the next second trunk line 20c is connected to the first trunk line 20b again, then shown in Fig. 1 h, on the second trunk line 20c, connect next the 3rd trunk line 20d, carry out aforesaid operations repeatedly, to be used to lay the tunnel-shaped of the trunk line 20 of tunnel construction thing, carry out the step of long distance construction with straight line or curve underground 100 according to design.

Embodiment 2

The present invention is shown in Fig. 2 a, and in order to lay the tunnel construction thing with the variform that is fit to landform or underground 100 conditions, the circular trunk line 20 that will be made of the steel pipe that is cut into specific length is connected in underground along straight line or the long distance of curve, comprising:

Before and after the initial trunk line 20a inside of conduit 10 inner surfaces and insertion formerly, the a certain number of reaction platform 31,32 of mutual correspondence is set with predetermined distance respectively, between the reaction platform 31,32 of direction of propulsion both sides, be respectively arranged with under the state of oil/pneumatic cylinder 30 loads, utilize hydraulic jack 40 in underground 100 steps that are pressed into first conduit 10 and initial trunk line 20a;

When being pressed into first conduit 10 and initial trunk line 20a, prevent the soil of plate input port 11 around digging out by the landslide that forms on the first conduit 10, then shown in Fig. 2 b, drop into successively and connect landslide and prevent plate 12, and on preventing plate 12, landslide waters cement grouting, form grouting portion 13, with the step that prevents to cave in;

Shown in Fig. 2 c, under the state of removing the oil/pneumatic cylinder 30 that is provided with on the initial trunk line 20a, formerly conduit 10 inner surfaces are provided with the step that a certain number of supply power can have the electromagnet 60 of magnetic;

Shown in Fig. 2 d, with the next one first trunk line of external diameter much smaller than initial trunk line 20a internal diameter

The side of 20b is cut along the pipeline direction of propulsion and is formed cut 21, reserves a part of both side ends simultaneously and forms not cut 22, then it is transported to the step that trunk line is provided with 200 inside, space;

Shown in Fig. 2 e, not cut 22 incisions of residue that trunk line is provided with the next one first trunk line 20b of 200 inside, space will be transported to, after cutting off (incision) fully along its length, to electromagnet 60 supply powers that are arranged on first conduit 10 inner surfaces, make it have very strong magnetic, utilize strong magnetic attraction body, enlarge pipe diameter when making cut 21 expansions, make the identical step of diameter of diameter with the initial trunk line 20a of the next first trunk line 20b;

Shown in Fig. 2 f, after the rear end of the next one first trunk line 20b that will handle through expander is welded to initial trunk line 20a front end, vertical topography is set or around the soil pressure brace table 23 of form or annulus form in the cut 21 of expansion, perhaps elder generation is provided with soil pressure brace table 23 in the cut 21 of the expansion of the next one first trunk line 20b that handles through expander, then the rear end of the next first trunk line 20b is welded to the front end of initial trunk line 20a, thereby will connects the step that is set to the initial trunk line 20a front end that has inserted through the next one first trunk line 20b that expander is handled;

Shown in Fig. 2 g, utilization is relocated onto the reaction platform 31 of first conduit 10 inner surfaces and the setting of the next first trunk line 20b inner surface, oil/pneumatic cylinder 30 between 32, first conduit 10 is advanced certain-length, form trunk line space 200 is set, shown in Fig. 2 h, the next second trunk line 20c is connected to the first trunk line 20b again, then shown in Fig. 2 i, on the second trunk line 20c, connect next the 3rd trunk line 20d, carry out this operation repeatedly, to be used to lay the tunnel-shaped of the trunk line 20 of tunnel construction thing, carry out the step of long distance construction with straight line or curve underground 100 according to design.

Namely; The present invention is in order to lay the tunnel construction thing with the variform that is fit to landform or underground 100 conditions; For shown in Fig. 2 a; Utilize hydraulic jack 40 underground 100 be pressed into simultaneously first conduit 10 and initial trunk line 20a after; The oil that arranges between the reaction platform 31,32 that utilizes first conduit 10 inner surfaces and initial trunk line 20a inner surface to arrange/air pressure cylinder 30; First conduit 10 is advanced a set a distance; By the trunk line that forms space 200 is set and connects the next first trunk line 20b; Repeatedly above-mentioned operation; The trunk line 20 construction methods of tunnel construction thing are set

Shown in Fig. 2 a, when being pressed into first conduit 10 and initial trunk line 20a, carry out preventing the soil of plate input port 11 around digging out by the landslide that forms on the first conduit 10, then shown in Fig. 2 b, drop into successively and connect landslide and prevent plate 12, and on landslide prevents plate 12, water cement grouting, form grouting portion 13, with the step that prevents to cave in;

The trunk line that forms in the first conduit 10 of insertion underground 100 is provided with the next first trunk line 20b of space 200 inner carryings, when connecting operation, carries out

Shown in Fig. 2 c, under the state of removing the oil/pneumatic cylinder 30 that is provided with on the initial trunk line 20a, formerly conduit 10 inner surfaces are provided with the step that a certain number of supply power can have the electromagnet 60 of magnetic;

Shown in Fig. 2 d, external diameter is cut formation cut 21 much smaller than the side of the next one first trunk line 20b of initial trunk line 20a internal diameter along the pipeline direction of propulsion, reserve a part of both side ends simultaneously and form not cut 22, then it is transported to the step that trunk line is provided with 200 inside, space;

Shown in Fig. 2 e, not cut 22 incisions of residue that trunk line is provided with the next one first trunk line 20b of 200 inside, space will be transported to, after cutting off (incision) fully along its length, to electromagnet 60 supply powers that are arranged on first conduit 10 inner surfaces, make it have very strong magnetic, enlarge pipe diameter when utilizing strong magnetic attraction body to make cut 21 expansions, make the identical step of diameter of diameter with the initial trunk line 20a of the next first trunk line 20b;

Shown in Fig. 2 f, after the rear end of the next one first trunk line 20b that will handle through expander is welded to initial trunk line 20a front end, vertical topography is set or around the soil pressure brace table 23 of form or annulus form in the cut 21 of expansion, perhaps elder generation is provided with soil pressure brace table 23 in the cut 21 of the expansion of the next one first trunk line 20b that handles through expander, then the rear end of the next first trunk line 20b is welded to the front end of initial trunk line 20a, thereby will connects the step that is set to the initial trunk line 20a front end that has inserted through the next one first trunk line 20b that expander is handled;

Shown in Fig. 2 g, utilization is relocated onto the reaction platform 31 of first conduit 10 inner surfaces and the setting of the next first trunk line 20b inner surface, oil/pneumatic cylinder 30 between 32, first conduit 10 is advanced certain-length, form trunk line space 200 is set, shown in Fig. 2 h, the next second trunk line 20c is connected to the first trunk line 20b again, then shown in Fig. 2 i, on the second trunk line 20c, connect next the 3rd trunk line 20d, carry out this operation repeatedly, to be used to lay the tunnel-shaped of the trunk line 20 of tunnel construction thing, carry out the step of long distance construction with straight line or curve underground 100 according to design.

Here, the embodiment of the invention 2 can be shown in Fig. 2 e and 2f, also comprise: in the space 500 that between trunk line 20b, 20c, 20d and first conduit 10, forms, fill the step that gap fill material (not having diagram) plugs the gap, wherein, trunk line 20b, 20c, 20d are transported on the first conduit 10 trunk line that forms respectively and are provided with in the space 200, enlarge pipe diameter in the time of strong magnetic force expansion cut by electromagnet 60 21, thereby have same diameter with initial trunk line 20a.

On the other hand, the present invention is by embodiment 1,2 described methods, tunnel-shaped according to design, along straight line or the long distance connection of curve a certain number of trunk line 20 is set underground 100, wherein, the soil pressure brace table 23 that is provided with on the cut 21 of trunk line 20b, the 20c of the processing of process expander is made up of permanent soil pressure brace table 23a and interim soil pressure brace table 23b.Interim soil pressure brace table 23b is after releasing, can be used in the trunk line that is connected in the second trunk line 20c back successively (not diagram) again and be provided with, wherein interim soil pressure brace table 23b connects at the front end of the previous first trunk line 20b that has been provided with and is arranged on the previous first trunk line 20b when the next second trunk line 20c is set.

In addition, the embodiment of the invention 1,2, shown in Fig. 3 a, if a large amount of underground water of underground existence, can also comprise: discharge underground water in order to utilize existing pipeline, at the underground forced gutter 70 that is drilled with a plurality of through hole 70a that is pressed into, make by through hole 70a and flow into the step that the underground water of gutter 70 inside discharges by gutter 70; Shown in Fig. 3 b,, can also comprise if underground 100 relatively loose or contain a small amount of underground water for geology: pressing-in grouting pipe 80, pour into cement paste 81 at front end, improve ground or form the step of waterproof film.

The present invention is by embodiment 1,2 described methods, tunnel-shaped according to design, along straight line or the long distance connection of curve a certain number of trunk line 20 is set underground 100, can also be shown in Fig. 4 a to Fig. 4 c, comprise: connection is provided with trunk line, make the direction or relative of the cut 21 of the expansion that forms on each trunk line 20 towards left and right sides, then the side of not cutting of cut 21 opposition sides of expansion is cut, form another cut 21 ', soil pressure brace table 23 is set, weld a side trunk line 20 and opposite side trunk lines at section by waterproof iron plate 400 afterwards, thereby when laying the subterranean tunnel structure, play the step of waterproof effect.At this moment, in the cut 21 of trunk line 20 expansion and cut these cut 21 opposition sides and do not cut the cut that the side forms, weld fixedly iron plate 27 respectively, be used to insert stress material, get through stress material 300 then the position is set, after forming circle or polygon stress material patchhole 28, by stress material patchhole 28, stress material 300 welding that steel pipe tube connector 26a that will be shown in Fig. 4 a or the reinforcing bar 26b shown in Fig. 4 b or the crossbeam shown in Fig. 4 c (beam) 26c form are provided with, and stress material 300 and opposite side trunk line 20 are joined.

In addition, the present invention can be shown in Fig. 5 a to Fig. 5 c, comprise: connection is provided with trunk line, make the direction or relative of the cut 21 of the expansion that forms on each trunk line 20 towards left and right sides, weld fixedly iron plate 27 in the cut 21 of trunk line then, be used to insert stress material, get through stress material 300 then the position is set, form stress material patchhole 28, do not cut at opposition side and then directly to get through stress material 300 on the side position is set, form stress material patchhole 28, then by stress material patchhole 28, the stress material 300 that steel pipe tube connector 26a that will be shown in Fig. 5 a or the reinforcing bar 26b shown in Fig. 5 b or the crossbeam shown in Fig. 5 c (beam) 26c form welds with the opposite side trunk line 20 of adjacency, weld a side trunk line 20 and opposite side trunk lines 20 at section with waterproof iron plate 400 afterwards, thereby when laying the subterranean tunnel structure, play the step of waterproof effect;

Also can be shown in Fig. 6 a to 6c, comprise: cut 21 side-lower in left and right sides that forms on each trunk line 20 is connected, or connection makes it relative downwards, vertical topography is set then or around the soil pressure brace table 23 of form or annulus form, get through the position that is provided with of stress material 300 afterwards respectively at the upper side of these trunk line 20 cut 21, after forming stress material patchhole 28, by stress material patchhole 28, stress material 300 that steel pipe tube connector 26a that will be shown in Fig. 6 a or the reinforcing bar 26b shown in Fig. 6 b or the crossbeam shown in Fig. 6 c (beam) 26c form and 20 welding of the opposite side trunk line of adjacency, it can not broken away from, the cut 21 of the expansion by downside is dug out soil again, section in cut 21 welds a side trunk line 20 and opposite side trunk lines with waterproof iron plate 400, thereby plays the step of waterproof effect when laying the subterranean tunnel structure.

As mentioned above, the present invention advances as long as the direction of propulsion of first conduit 10 is adjusted certain angle, just can be quick, simply, ideally lay the trunk line 20 that is used to be provided with the tunnel construction thing along straight line or curve underground 100, because being transported to trunk line is provided with the initial trunk line 20a internal diameter of the next one first trunk line 20b external diameter of 200 inside, space much smaller than the first conduit 10 of previous insertion, therefore need not the next first trunk line 20b is cut into carrying one by one after a plurality of parts, or 2 unnecessary subjobs such as expansion again after using the diameter variset earlier its external diameter to be diminished in addition, just can pass through initial trunk line 20a inside, wherein above-mentioned trunk line is provided with in the first conduit 10 that space 200 is insertions underground 100 and forms.

In addition, incision is transported to not cut 22 of residue that trunk line is provided with the next one first trunk line 20b in the space 200, after cutting off (incision) fully along its length, taked among the embodiment 1 cut expansion hydraulic jack 45 to be set at section or pipe interior, it is started, in the time of expansion cut 21, enlarge pipe diameter, after making the next first trunk line 20b diameter have the diameter identical with initial trunk line 20a, the method for welding; Electromagnet 60 supply powers have been taked among the embodiment 2 to the setting of guide's pipe internal surface, make it have ferromagnetism, in the time of attraction expansion cut 21 by strong magnetic force, enlarge pipe diameter, after the diameter that makes the next first trunk line 20b is identical with initial trunk line diameter, the method for welding.Therefore, in embodiment 1,2,, all be formed naturally very much stress material the space has been set, thereby omitted the operation that the stress material that is formed for inserting stress material in addition in this part is provided with the space by the expansion of cut 21.

Therefore, simplified operation, made the connection setting of trunk line 20 easier, rapid.

In addition, in the embodiment of the invention 1,2, on the cut 21 of carrying out trunk line 20b, 20c that expander handles by cut expansion with the magnetic force of hydraulic jack 45 and electromagnet 60, soil pressure brace table 23 is set, this soil pressure brace table 23 by permanent soil pressure brace table 23a and temporarily soil pressure brace table 23b form.Interim soil pressure brace table 23b is after releasing, can be used in the setting of the trunk line that is connected in the second trunk line 20c back successively again, wherein interim soil pressure brace table 23b connects when the next second trunk line 20c is set at the previous first trunk line 20b front end that has been provided with, be arranged on the previous first trunk line 20b, therefore can significantly curtail expenditure.

Here, the present invention can also be shown in Fig. 1 b and 2b, after the step that is pressed into first conduit 10 and trunk line 20, formerly inject inferior colloidal clay agent---bentonite around the conduit 10, form argillic horizon (50), like this after, when advancing first conduit 10, can reduce the tube circumference frictional force that acts on first conduit 10 by argillic horizon 50, first conduit 10 slidingtypes are advanced, advance operation to become easy thereby make.

In addition, among the embodiment 2, along with formerly in the conduit 10 a certain number of electromagnet 60 being set, can expand the cut 21 of next trunk line 20b, 20c by the strong magnetic force of electromagnet 60, enlarge pipe diameter simultaneously, make itself and initial trunk line 20a have same diameter, when forming space 500 between follow-up trunk line and the first conduit 10, can drop into void filler (not diagram) plugs the gap, because the waterproof action of void filler (not having diagram) need not to worry that water infiltrates first conduit 10 inside.

The trunk line that forms in being inserted into underground 100 first conduit 10 is provided with in the space 200, when a certain number of trunk line 20 being set by the tunnel-shaped connection, if a large amount of underground water of underground existence, can be shown in Fig. 3 a, take by first conduit 10 to the underground forced gutter 70 that is drilled with a plurality of through hole 70a that is pressed into, the method that underground water is discharged by gutter 70, like this, when being pressed into first conduit 10 and carrying out the inner excavated operation, just quality problems can not occur, can carry out trunk line 20 at an easy rate operation is set.

If geology is relatively loosened or is contained a small amount of underground water, then can be shown in Fig. 3 b, take pressing-in grouting pipe 80, inject cement paste 81 at front end, improve the method for ground or formation waterproof film in advance, like this, when being pressed into first conduit 10 and carrying out the inner excavated operation, just quality problems can not occur, can carry out trunk line 20 at an easy rate operation is set.

The invention effect

As mentioned above, the present invention can be when laying the tunnel construction thing must be rapid, easy at underground a plurality of trunk lines of constructing in advance with straight line or curve, construct safely;

Biggest advantage is to the above-mentioned trunk line that forms in the underground first conduit that is inserted into when the next trunk line of carrying is set in the space, be connected to the follow-up trunk line that is arranged on the initial first conduit the place ahead in the first conduit, have much smaller than the external diameter of initial trunk line internal diameter, therefore do not need fully extra operations such as follow-up trunk line external diameter diminish, just can make it pass through initial trunk line inside, thereby not only insert follow-up trunk line easily, and significantly cut down the buying expenses of whole trunk line;

Cut the back in a side of the less follow-up trunk line of above-mentioned internal diameter along the pipeline direction of propulsion and form cut, reserve a part of both side ends simultaneously and form not cut, be transported to trunk line then interior volume is set, again remainder is cut, after cutting off (incision) fully along its length, utilize the powerful magnetic force of the electromagnet that cut expansion is provided with hydraulic jack or by guide's pipe internal surface, in section or pipe interior expansion cut, enlarge the diameter of body simultaneously, make the diameter of follow-up trunk line identical with the diameter of initial trunk line, and weld, owing to be formed naturally stress material in the process of expansion of cut the space is set, thereby omitted to inserting stress material and formed the operation that stress material is provided with the space, stress material can conveniently promptly be set;

Utilize cut to expand with hydraulic jack or electromagnet, formerly in the conduit the less follow-up trunk line of diameter is carried out the once-through operation that expander is handled, make itself and initial trunk line have same diameter, be connected in the place ahead of initial trunk line then, this operation of singly depositing makes the connection setting of trunk line more rapid, easy.

In addition, carry out the soil pressure brace table that is provided with on the cut of trunk line of expander processing with the magnetic force of hydraulic jack and electromagnet by cut expansion, form by permanent soil pressure brace table and interim soil pressure brace table, so when the previous trunk line front end connection that has been provided with is provided with follow-up trunk line, the interim soil pressure brace table that is arranged at previous trunk line can be used for connecting successively the setting of the follow-up trunk line of setting after releasing, therefore not only the soil pressure brace table be provided with simply, and can significantly curtail expenditure.

On the other hand, if a large amount of underground water of underground existence during construction, can take by first conduit at the underground forced gutter that is drilled with a plurality of through holes that is pressed into, discharge phreatic method by gutter, if the loose location of geology or comprise a small amount of phreatic soil property, then take at underground pressing-in grouting pipe, pour into cement paste at front end, improve the method for ground or formation waterproof film, quality problems can not occur thereby guarantee to be pressed in first conduit and the inner excavated work, make the construction operation of trunk line become very easy.

The present invention compare korean patent application 2004-91846 number of the previous application of the applicant and patent application 2005-101768 number and other trunk line job practices more economically, easier, can time faster inherently down safety lay the trunk line that is used to be provided with the tunnel construction thing.

Claims (5)

1. trunk line job practices of laying the tunnel construction thing, it is characterized in that, in order to lay the tunnel construction thing with the variform that is fit to landform or underground (100) condition, will be long underground along straight line or curve apart from being connected in by the circular trunk line (20) that the steel pipe that is cut into specific length constitutes, this method comprises the steps:
Conduit (10) inner surface and being inserted in before and after the inside of the initial trunk line (20a) in the first conduit (10) formerly, the a certain number of reaction platform (31) (32) of mutual correspondence is set with predetermined distance respectively, between the reaction platform (31) (32) of direction of propulsion both sides, be respectively arranged with under the state of oil/pneumatic cylinder (30) load, utilize hydraulic jack (40), be pressed into the step of first conduit (10) and initial trunk line (20a) in underground (100);
When being pressed into first conduit (10) and initial trunk line (20a), the landslide that go up to form by first conduit (10) prevents the soil of plate input port (11) around digging out, drop into successively and connect landslide and prevent plate (12), and on preventing plate (12), landslide waters cement grouting, form grouting portion (13), with the step that prevents to cave in;
Under the state of removing the last oil/pneumatic cylinder (30) that is provided with of initial trunk line (20a), external diameter is cut formation cut (21) much smaller than a side of the next one first trunk line (20b) of initial trunk line (20a) internal diameter along the pipeline direction of propulsion, reserve a part of both side ends simultaneously and form not cut (22), then it is transported to trunk line the inner step in space (200) is set;
To be transported to not cut (22) incision of residue that trunk line is provided with the inner next one first trunk line (20b) in space (200), after cutting fully along its length, at section or pipe interior cut expansion hydraulic jack (45) is set, hydraulic jack (45) is started, enlarge pipe diameter in the time of expansion cut (21), make the identical step of diameter of diameter with the initial trunk line (20a) of next first trunk line (20b);
After the rear end of the next one first trunk line (20b) that will handle through expander is welded to the front end of initial trunk line (20a), vertical topography is set or around the soil pressure brace table (23) of form or annulus form in the cut (21) of expansion, perhaps elder generation is provided with soil pressure brace table (23) in the cut (21) of the expansion of the next one first trunk line of handling through expander (20b), then the rear end of next first trunk line (20b) is welded to the front end of initial trunk line (20a), thereby will connects the step that is set to initial trunk line (20a) front end that has inserted through the next one first trunk line (20b) that expander is handled;
Removing under the state of cut expansion with hydraulic jack (45), utilization is relocated onto the oil/pneumatic cylinder (30) between the reaction platform (31) (32) of first conduit (10) inner surface and next first trunk line (20b) inner surface, first conduit (10) is advanced certain-length, form trunk line space (200) is set, next second trunk line (20c) is connected to first trunk line (20b) again, on described second trunk line (20c), connect next the 3rd trunk line (20d) then again, carry out this operation repeatedly, according to the tunnel-shaped of design, connect the step of the trunk line (20) that is provided for laying the tunnel construction thing with straight line or the long distance of curve in underground (100).
2. trunk line job practices of laying the tunnel construction thing, it is characterized in that, in order to lay the tunnel construction thing with the variform that is fit to landform or underground (100) condition, to be connected in underground (100) along straight line or the long distance of curve by the circular trunk line (20) that the steel pipe that is cut into specific length constitutes, this method comprises the steps:
Before and after the inside of the initial trunk line (20a) of conduit (10) inner surface and insertion formerly, the a certain number of reaction platform (31) (32) of mutual correspondence is set with predetermined distance respectively, between the reaction platform (31) (32) of direction of propulsion both sides, be respectively arranged with under the state of oil/pneumatic cylinder (30) load, utilize hydraulic jack (40) to be pressed into the step of first conduit (10) and initial trunk line (20a) in underground (100);
When being pressed into first conduit (10) and initial trunk line (20a), the landslide that go up to form by first conduit (10) prevents the soil of plate input port (11) around digging out, drop into successively and connect landslide and prevent plate (12), and on preventing plate (12), landslide waters cement grouting, form grouting portion (13), with the step that prevents to cave in;
Under the state of removing oil/pneumatic cylinder (30) that initial trunk line (20a) go up to be provided with, formerly conduit (10) inner surface is provided with the step of the electromagnet (60) that a certain number of supply power can have magnetic;
External diameter is cut formation cut (21) much smaller than a side of the next one first trunk line (20b) of initial trunk line (20a) internal diameter along the pipeline direction of propulsion, reserve a part of both side ends simultaneously and form not cut (22), then it is transported to trunk line the inner step in space (200) is set;
To be transported to not cut (22) incision of residue that trunk line is provided with the inner next one first trunk line (20b) in space (200), after cutting fully along its length, to electromagnet (60) supply power that is arranged on first conduit (10) inner surface, make it have very strong magnetic, utilize strong magnetic attraction body, make cut (21) expansion time enlarge pipe diameter, make next first trunk line (20b) have step with initial trunk line (20a) same diameter;
After the rear end of the next one first trunk line (20b) that will handle through expander is welded to the front end of initial trunk line (20a), vertical topography is set or around the soil pressure brace table (23) of form or annulus form in the cut (21) of expansion, perhaps elder generation is provided with soil pressure brace table (23) in the cut (21) of the expansion of the next one first trunk line of handling through expander (20b), then the rear end of next first trunk line (20b) is welded to the front end of initial trunk line (20a), thereby will connects the step that is set to initial trunk line (20a) front end that has inserted through the next one first trunk line (20b) that expander is handled;
Utilization is relocated onto the oil/pneumatic cylinder (30) between the reaction platform (31) (32) of first conduit (10) inner surface and next first trunk line (20b) inner surface, first conduit (10) is advanced certain-length, form trunk line space (200) is set, next second trunk line (20c) is connected to described first trunk line (20b) again, on described second trunk line (20c), connect next the 3rd trunk line (20d) then again, carry out this operation repeatedly, to be used to lay the tunnel-shaped of the trunk line (20) of tunnel construction thing, step in underground (100) with straight line or curve long distance construction according to design.
3. the trunk line job practices of laying tunnel construction thing as claimed in claim 1 or 2, it is characterized in that, job practices according to claim 1 and 2, the trunk line that forms in the first conduit (10) that inserts underground (100) is provided with in the space (200), according to tunnel-shaped, long distance connection is provided with a certain number of trunk line (20), wherein, on trunk line (20b) cut (21) (20c) of carrying out the expander processing by cut expansion with the magnetic force of hydraulic jack (45) or electromagnet (60), soil pressure brace table (23) is set, this soil pressure brace table (23) is made up of permanent soil pressure brace table (23a) and interim soil pressure brace table (23b), when the front end connection of previous first trunk line (20b) that has been provided with is provided with next second trunk line (20c), the interim soil pressure brace table (23b) that is arranged at previous first trunk line (20b) can be used for being connected in successively the connection setting of the trunk line of next second trunk line (20c) back once more after releasing.
4. the trunk line job practices of laying tunnel construction thing as claimed in claim 2, it is characterized in that, job practices according to claim 2, the trunk line that forms in the first conduit (10) that inserts underground (100) is provided with in the space (200), when a certain number of trunk line (20) being set according to the tunnel-shaped connection, this method also comprises: in the space (500) that follow-up trunk line (20b) (20c) forms between (20d) and the first conduit (10), fill the step that gap fill material plugs the gap, wherein, follow-up trunk line (20b) (20c) (20d) is transported to the trunk line that first conduit (10) go up to form respectively and is provided with in the space (200), enlarge pipe diameter when expanding cut (21), thereby have same diameter with initial trunk line (20a) by the strong magnetic force of electromagnet (60).
5. the trunk line job practices of laying tunnel construction thing as claimed in claim 1 or 2, it is characterized in that, job practices according to claim 1 and 2, the trunk line that forms in the first conduit (10) that inserts underground (100) is provided with in the space (200), according to tunnel-shaped, connect when a certain number of trunk line (20) is set, if a large amount of underground water of underground existence, this method also comprises: at the underground forced gutter (70) that is drilled with a plurality of through holes (70a) that is pressed into, discharge phreatic step by gutter (70), make it can utilize existing pipeline to discharge underground water.
CN2007100868387A 2006-06-22 2007-03-14 Main duct construction method laid down tunnel structure article CN101092878B (en)

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KR101069705B1 (en) * 2009-06-09 2011-10-04 주식회사 엔티에스이앤씨 Method for installing waterproofing steel plate in construction of undergound tunnel
CN101813214B (en) * 2010-04-29 2011-09-07 中国石油化工集团公司 Mounting and construction method of U-shaped tunnel pipelines
KR101343370B1 (en) * 2012-10-23 2013-12-20 현대주철산업 주식회사 Method for fixing socket to water pipe
KR102087969B1 (en) * 2019-06-17 2020-03-11 주식회사 인스코엔지니어링 Construction method of underground tunnel forming structure

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