CN111236268A - Support construction method applied to pipe network engineering - Google Patents
Support construction method applied to pipe network engineering Download PDFInfo
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- CN111236268A CN111236268A CN202010039062.9A CN202010039062A CN111236268A CN 111236268 A CN111236268 A CN 111236268A CN 202010039062 A CN202010039062 A CN 202010039062A CN 111236268 A CN111236268 A CN 111236268A
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- groove
- hoisting
- supporting plate
- support
- backfilling
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
- E02D17/083—Shoring struts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/12—Back-filling of foundation trenches or ditches
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application provides a support construction method applied to pipe network engineering, wherein the support construction method comprises the following steps: splicing a plurality of wood boards with the same size into an integral supporting plate; two parallel hoisting frames crossing the groove are arranged on the ground at the two sides of the groove; a plurality of upright posts which are arranged side by side at intervals are arranged in the groove along the groove wall of the groove; hoisting the integral supporting plate between the wall of the groove and the upright column based on the hoisting frame; installing cross braces in the upper area between the adjacent upright columns to finish the installation of the supports; and after the pipe network construction operation is finished, backfilling the groove, disassembling the cross brace wood, backfilling the groove for the second time, disassembling the stand column, and finally lifting out the integral support plate based on the lifting frame to finish the disassembly of the support. The technical scheme that this application provided enables pipe network engineering's construction more convenient and safe.
Description
Technical Field
The application belongs to the field of pipe network engineering, and particularly relates to a support construction method applied to pipe network engineering.
Background
In the pipe network excavation construction field, need open when laying the pipe network and dig out a slot, because the inside both sides of slot that open and dig out are the earthwork structure generally, if the earthwork structure meets with torrential rain weather or because the soil texture of self is loose, cause the earthwork very easily and collapse the accident so cause the casualties. Therefore, it is generally necessary to provide a supporting structure at both sides of the inside of the excavated trench to prevent a construction accident caused by the collapse of earth.
In the prior art, the supporting construction process generally includes firstly digging a groove, then driving a stand column, then mounting supporting wood boards one by one, and finally supporting by using cross-bracing wood to complete the erection of the support. After the construction operation is completed, the supporting structure (such as the cross-brace timber, the supporting wood plate and the upright posts) needs to be removed, and then the groove is backfilled, otherwise, the supporting wood plate is difficult to remove.
Because the prior art needs to demolish the supporting structure first after the construction operation is finished, and then carry out the ditch groove backfill, therefore, can't ensure the operation safety in the ditch groove, for example, when demolising the supporting structure, cause the earth to collapse and then cause the emergence of constructor casualties phenomenon.
Disclosure of Invention
The application provides a support construction method applied to pipe network engineering, so that the construction of the pipe network engineering is more convenient and safer.
In order to achieve the above object, a first aspect of the present application provides a support construction method applied to pipe network engineering, where the support construction method includes:
splicing a plurality of wood boards with the same size into an integral supporting plate;
two parallel hoisting frames crossing the groove are arranged on the ground at the two sides of the groove;
a plurality of upright columns which are arranged in parallel at intervals are arranged in the groove along the groove wall of the groove;
hoisting the integral supporting plate between the groove wall of the groove and the upright column based on the hoisting frame;
installing cross braces in the upper area between the adjacent upright columns to finish the installation of the supports;
and after the pipe network construction operation is finished, backfilling the groove, disassembling the cross brace wood, backfilling the groove for the second time, disassembling the upright post, and finally lifting the integral support plate out based on the lifting frame to finish the disassembly of the support.
Based on the first aspect of the present application, in a first possible implementation manner, after the wood boards with the same block size are spliced into an integral supporting plate, the method further includes:
at least two back ridges are arranged in the vertical direction on one surface of the integral supporting plate;
the top of each back ridge is provided with a first hoisting part, so that the hoisting frame can hoist the integral supporting plate through the first hoisting part.
Based on the first possible implementation manner of the first aspect of the present application, in a second possible implementation manner, after the at least two back ribs are installed in the vertical direction on one surface of the integral supporting plate, the method further includes:
and welding a transverse channel steel at the bottom of the back edge, wherein the transverse channel steel tightly supports the integral supporting plate.
Based on the first aspect of the present application, in a third possible implementation manner, the hoisting the integral supporting plate between the wall of the groove and the column based on the hoisting frame includes:
at least two steel bar components with U-shaped grooves are used for supporting the integral supporting plate, and second hoisting components are arranged on the steel bar components;
and hoisting the integral supporting plate between the groove wall of the groove and the upright column based on the hoisting frame and the second hoisting part.
Based on the first aspect of the present application or the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the hoisting frame includes: the device comprises a portal upright post, a cross beam and a hoisting tool;
the above-mentioned two side by side of both sides ground installation in the slot just span the hoist and mount frame of above-mentioned slot and include:
leveling the ground on the two sides of the groove and pre-burying and erecting the pre-buried pieces required by the hoisting frame;
erecting a portal upright post on the embedded part, wherein the portal upright post and the embedded part are connected and fixed by adopting a bolt structure;
respectively erecting first inclined struts on two sides below the portal upright post, wherein one ends of the first inclined struts are fixed on the ground, and the other ends of the first inclined struts are fixed on the portal upright post;
erecting a cross beam above the portal upright post;
erecting a second inclined strut at a vertical included angle of the cross beam and the portal upright post;
and a hoisting tool is arranged on the cross beam.
Based on the fourth possible implementation manner of the first aspect of the present application, in a fifth possible implementation manner, the hoisting tool is an electric hoist or a chain block.
Based on the first aspect of the present application or the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in a sixth possible implementation manner, after the installing the cross braces between the adjacent upright columns, the method further includes: and a triangular wood wedge is additionally arranged in a gap at the joint of the cross brace wood and the upright post.
Based on the first aspect of the present application or the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in a seventh possible implementation manner, the backfilling the trench includes: backfilling the backfill material to be below the height of the cross brace wood so as to remove the cross brace wood.
Based on the first aspect of the present application or the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in an eighth possible implementation manner, the backfilling the trench twice includes: backfilling the backfill material to the dismantling height limit of the upright post so as to dismantle the upright post subsequently.
Based on the first aspect of the present application, or the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in a ninth possible implementation manner, after the completing the disassembling of the support, the method further includes: and backfilling holes left after the support is disassembled.
As can be seen from the above, according to the support construction method provided by the application, a plurality of wood boards with the same size are spliced into an integral support plate; two parallel hoisting frames crossing the groove are arranged on the ground at the two sides of the groove; then, a plurality of upright posts which are arranged side by side at intervals are arranged in the groove along the groove wall of the groove; then hoisting the whole supporting plate between the wall of the groove and the upright column based on the hoisting frame; finally, installing cross braces in the upper area between the adjacent upright columns to finish the installation of the supports; and after the pipe network construction operation is finished, backfilling the groove, disassembling the cross brace wood, backfilling the groove for the second time, disassembling the stand column, and finally lifting out the integral support plate based on the lifting frame to finish the disassembly of the support. Therefore, according to the construction method, the plurality of boards can be spliced into the integral supporting plate, the integral supporting plate is hoisted based on the hoisting frame to be installed, the integral supporting plate is hoisted out based on the hoisting tool frame after the groove is backfilled, on one hand, constructors do not need to move the supporting plate one by one to the groove to be installed, the construction difficulty is reduced, meanwhile, construction safety accidents caused by collapse of earthwork possibly caused by dismantling the supporting plate firstly are avoided, and the construction of pipe network engineering is more convenient and safer.
Drawings
In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of a support construction method provided in the embodiment of the present application.
Fig. 2 is a schematic structural diagram of an integral supporting plate provided in the embodiment of the present application.
Fig. 3 is a schematic structural diagram of a hoisting frame provided in the embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited by the specific embodiments disclosed below.
The following describes a supporting construction method applied to pipe network engineering provided by the present application with an embodiment; as shown in fig. 1, the support construction method includes:
in step 11, the size of the wood board may be determined according to a construction length of a construction site; meanwhile, the wood board can be a fir wood board, a composite wood board and the like, and is not particularly limited herein. Specifically, the wood boards with the same size can be spliced into the integral supporting plate by 7 cm carpenter iron nails in a slanting nail manner. It should be noted that, the splicing manner that can realize the above-mentioned function of splicing a plurality of boards with the same size into an integral supporting plate belongs to the protection scope of the present application.
Optionally, after the step 11 is completed, at least two back ridges are installed in the vertical direction on one surface of the integral supporting plate; and the top of each back ridge is provided with a first hoisting part, so that the hoisting frame can hoist the integral supporting plate through the first hoisting part. Furthermore, a transverse channel steel can be welded at the bottom of the back edge, wherein the transverse channel steel tightly supports the integral supporting plate, so that the process of hoisting the integral supporting plate is guaranteed. Specifically, the structure of the integral supporting plate completed by the above method can be further described by the structural schematic diagram of the integral supporting plate shown in fig. 2, as shown in fig. 2, the integral supporting plate is formed by splicing a plurality of wood boards 21, a plurality of back ridges 22 (two back ridges are shown in fig. 2 as an example) are installed in the vertical direction on one surface of the integral supporting plate, a first hoisting member 24 is arranged at the top of each back ridge (in fig. 2, the first hoisting member arranged at the top of one back ridge is marked by the reference number 24), and a transverse channel steel 23 tightly supporting the integral supporting plate is welded at the bottom of the back ridge.
The concrete application scenario of municipal pipe network engineering with the trench excavation depth of 1.2m-1.7m is used for explaining the overall supporting plate structure shown in fig. 2 in detail. As shown in fig. 2, in this specific application scenario, the integral supporting plate is formed by splicing 5 wood boards; the length, width and thickness dimensions of the single wood board 21 are 4 meters (i.e., m) x 0.3m x 0.06 m; the number M of the back ridges 22 is 2; the back edge 22 is a 10# channel steel with the length of 2 m; the transverse channel steel 23 is a No. 10 channel steel and is welded and fixed with the back edge 22 in an electric welding mode; the first lifting member 24 may be a circular metal sling.
Of course, besides the above application scenarios, the integral supporting plate in the embodiment of the present application may also be implemented in other forms, which is not limited herein.
under an application scenario, the hoisting frame comprises: portal stand, crossbeam and lifting device. Optionally, step 12 includes: leveling the ground on the two sides of the groove and pre-burying and erecting the pre-buried pieces required by the hoisting frame; erecting a portal upright post on the embedded part, wherein the portal upright post and the embedded part are connected and fixed by adopting a bolt structure; respectively erecting first inclined struts on two sides below the portal upright post, wherein one ends of the first inclined struts are fixed on the ground, and the other ends of the first inclined struts are fixed on the portal upright post; erecting a cross beam above the portal upright post; erecting a second inclined strut at a vertical included angle of the cross beam and the portal upright post; and a hoisting tool is arranged on the cross beam. Specifically, the structure of the hoisting frame completed by the method can be further described by using the schematic structural diagram of the hoisting frame shown in fig. 3, it should be noted that fig. 3 is illustrated by only one of two hoisting frames which are arranged side by side and cross the groove, and the structure of the hoisting frame in fig. 3 is a symmetrical structure (except for a hoisting tool, only one hoisting tool is installed on each hoisting frame), and fig. 3 only indicates one side of the symmetrical structure of the hoisting frame. As shown in fig. 3, a denotes the ground on both sides of the trench, b denotes the trench, and the sling frame includes a gantry upright 31, a cross beam 32, a first inclined strut 33, a second inclined strut 34, and a lifting tool 35.
The concrete application scenario of the municipal pipe network engineering with the trench excavation depth of 1.2m to 1.7m is described in detail below for the hoisting frame structure shown in fig. 3. In the specific application scenario, the gantry upright column 31 is 12.6# I-steel 2m high; the beam 32 is a 20# I-steel with a length of 3 m; the first inclined strut 34 is 12.6# I-steel with the length of 2 m; the second inclined strut 33 is 8# channel steel; optionally, the hoisting tool is an electric hoist or a chain block. The method of erecting the cross beam above the portal column, the first diagonal braces respectively erected on both sides below the portal column, and the second diagonal braces erected at the vertical included angle between the cross beam and the portal column is welding.
Of course, besides the above application scenarios, the hoisting frame in the embodiment of the present application may also be implemented in other forms, which is not limited herein.
optionally, in a concrete application scenario of the municipal pipe network engineering with the trench excavation depth of 1.2m to 1.7m, the size of the column is 3.5m × 0.15m × 0.2 m; the interval of the upright posts is 1.2 m; the depth of the upright post driven into the ground is 2 m.
optionally, hoisting the integral supporting plate to the position between the groove wall of the groove and the upright column based on the hoisting frame in step 14 may further include: at least two steel bar components with U-shaped grooves are used for supporting the integral supporting plate, and second hoisting components are arranged on the steel bar components; and hoisting the integral supporting plate between the groove wall of the groove and the upright column based on the hoisting frame and the second hoisting part. Optionally, the second hoisting member may be a circular metal hoisting ring.
in an application scenario, step 15 further includes, after the installing the cross braces between the adjacent columns: and a triangular wood wedge is additionally arranged in a gap at the joint of the cross brace wood and the upright post.
And step 16, backfilling the groove after the pipe network construction operation is finished, disassembling the cross brace wood, backfilling the groove for the second time, disassembling the upright post, and finally lifting the integral supporting plate based on the lifting frame to finish the disassembly of the support.
Optionally, the backfilling of the trench may be: backfilling the backfill material to be below the height of the cross brace wood so as to remove the cross brace wood.
Optionally, the backfilling of the trench for the second time may be: backfilling the backfill material to the dismantling height limit of the upright post so as to dismantle the upright post subsequently.
In an application scenario, the method further includes, after the dismantling of the support is completed: and backfilling holes left after the support is disassembled.
In the concrete application scenario of the municipal pipe network engineering with the trench excavation depth of 1.2m to 1.7m, in the step 16, the pipe network construction operation specifically comprises: laying a sand cushion layer in the groove and installing a pipeline; the backfill material backfilling the backfill material to be below the height of the cross brace wood is medium coarse sand, preferably, the backfill material backfilling to be below the height of the cross brace wood is preferably performed at a position where the horizontal plane of the backfill material is 10 centimeters (namely cm) away from the lower bottom surface of the cross brace wood; the secondary backfilling is to backfill the backfill material to the position of the dismantling height limit of the upright post, preferably to the position of the horizontal plane of the backfill material 10cm away from the upper surface of the upright post, and the backfill material of the secondary backfilling is the stone powder slag. And compacting backfill materials of the backfilling holes after the holes left after the backfilling support is disassembled.
As can be seen from the above, according to the support construction method provided by the application, a plurality of wood boards with the same size are spliced into an integral support plate; two parallel hoisting frames crossing the groove are arranged on the ground at the two sides of the groove; then, a plurality of upright posts which are arranged side by side at intervals are arranged in the groove along the groove wall of the groove; then hoisting the whole supporting plate between the wall of the groove and the upright column based on the hoisting frame; finally, installing cross braces in the upper area between the adjacent upright columns to finish the installation of the supports; and after the pipe network construction operation is finished, backfilling the groove, disassembling the cross brace wood, backfilling the groove for the second time, disassembling the stand column, and finally lifting out the integral support plate based on the lifting frame to finish the disassembly of the support. Therefore, according to the construction method, the plurality of boards can be spliced into the integral supporting plate, the integral supporting plate is hoisted based on the hoisting frame to be installed, the integral supporting plate is hoisted out based on the hoisting tool frame after the groove is backfilled, on one hand, constructors do not need to move the supporting plate one by one to the groove to be installed, the construction difficulty is reduced, meanwhile, construction safety accidents caused by collapse of earthwork possibly caused by dismantling the supporting plate firstly are avoided, and the construction of pipe network engineering is more convenient and safer.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It should be noted that, the methods and the details thereof provided by the foregoing embodiments may be combined with the apparatuses and devices provided by the embodiments, which are referred to each other and are not described again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described apparatus/device embodiments are merely illustrative, and for example, the division of the above-described modules or units is only one logical functional division, and the actual implementation may be implemented by another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A support construction method applied to pipe network engineering is characterized by comprising the following steps:
splicing a plurality of wood boards with the same size into an integral supporting plate;
two parallel hoisting frames crossing the groove are arranged on the ground at the two sides of the groove;
a plurality of upright posts which are arranged side by side at intervals are arranged in the groove along the groove wall of the groove;
hoisting the integral supporting plate between the groove wall of the groove and the upright column based on the hoisting frame;
installing cross braces in the upper area between the adjacent upright columns to finish the installation of the supports;
and backfilling the groove after the pipe network construction operation is finished, disassembling the cross brace wood, backfilling the groove for the second time, disassembling the upright post, and finally lifting out the integral support plate based on the lifting frame to finish the disassembly of the support.
2. The supporting construction method according to claim 1, wherein after the wood boards with the same size are spliced into a whole supporting plate block, the method further comprises the following steps:
at least two back ridges are arranged in the vertical direction of one surface of the integral supporting plate;
and arranging a first hoisting part at the top of each back edge so that the hoisting frame can hoist the integral supporting plate through the first hoisting part.
3. The support construction method according to claim 2, wherein after the at least two back ridges are installed in the vertical direction on one surface of the integral support plate, the method further comprises the following steps:
and welding a transverse channel steel at the bottom of the back edge, wherein the transverse channel steel tightly supports the integral supporting plate.
4. The support construction method according to claim 1, wherein the hoisting of the integral support plate between the wall of the groove and the column based on the hoisting frame comprises:
supporting the integral supporting plate by using at least two steel bar parts with U-shaped grooves, wherein the steel bar parts are provided with second hoisting parts;
and hoisting the integral supporting plate between the groove wall of the groove and the upright column based on the hoisting frame and the second hoisting part.
5. The support construction method according to any one of claims 1 to 4, wherein the hoisting frame comprises: the device comprises a portal upright post, a cross beam and a hoisting tool;
two side by side just span at the both sides ground installation of slot hoist and mount frame of slot includes:
leveling the ground on the two sides of the groove and pre-burying and erecting pre-embedded parts required by the hoisting frame;
erecting a portal upright post on the embedded part, wherein the portal upright post and the embedded part are connected and fixed by adopting a bolt structure;
respectively erecting first inclined struts on two sides below the portal upright post, wherein one ends of the first inclined struts are fixed on the ground, and the other ends of the first inclined struts are fixed on the portal upright post;
a cross beam is erected above the portal upright post;
erecting a second inclined strut at a vertical included angle of the cross beam and the portal upright post;
and a hoisting tool is arranged on the cross beam.
6. The support construction method according to claim 5, wherein the hoisting tool is an electric hoist or a chain block.
7. The support construction method according to any one of claims 1 to 4, further comprising, after installing the cross braces between the adjacent columns: and a triangular wood wedge is additionally arranged in a gap at the joint of the cross brace wood and the upright post.
8. The method of timbering construction of any one of claims 1 to 4, wherein said backfilling said trench comprises: backfilling the backfill material below the height of the cross brace wood so as to dismantle the cross brace wood.
9. The method of timbering construction according to any one of claims 1 to 4, wherein said secondary backfilling of said trench comprises: backfilling backfill material to the demolition height limit of the column for subsequent demolition of the column.
10. The method for constructing a support according to any one of claims 1 to 4, further comprising, after the completion of the dismantling of the support: and backfilling holes left after the support is disassembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039062.9A CN111236268A (en) | 2020-01-14 | 2020-01-14 | Support construction method applied to pipe network engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039062.9A CN111236268A (en) | 2020-01-14 | 2020-01-14 | Support construction method applied to pipe network engineering |
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| CN111236268A true CN111236268A (en) | 2020-06-05 |
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| CN202010039062.9A Pending CN111236268A (en) | 2020-01-14 | 2020-01-14 | Support construction method applied to pipe network engineering |
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Application publication date: 20200605 |