CN110552702B - Underground excavation construction method for assembled corrugated steel plate underground comprehensive pipe gallery - Google Patents
Underground excavation construction method for assembled corrugated steel plate underground comprehensive pipe gallery Download PDFInfo
- Publication number
- CN110552702B CN110552702B CN201910735067.2A CN201910735067A CN110552702B CN 110552702 B CN110552702 B CN 110552702B CN 201910735067 A CN201910735067 A CN 201910735067A CN 110552702 B CN110552702 B CN 110552702B
- Authority
- CN
- China
- Prior art keywords
- pipe
- grouting
- vertical shaft
- pipe gallery
- underground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/06—Lining shafts; Linings therefor with iron or steel
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/12—Accessories for making shaft linings, e.g. suspended cradles, shutterings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
An underground excavation construction method for an assembled corrugated steel plate underground comprehensive pipe gallery belongs to the technical field of municipal underground facility construction methods and is used for underground excavation construction of the underground pipe gallery. The technical scheme is as follows: the vertical excavation shaft, with the shaft that shaft helical bellows placed, the helical bellows tee bend is connected to shaft helical bellows one side, along the horizontal piping lane of helical bellows tee bend lateral excavation, on one side the ripple steel sheet is assembled in the tunnelling, constitutes horizontal piping lane, then carries out the slip casting through the slip casting mouth, and the slip casting forms a body structure with the steel buckled plate of assembling of horizontal piping lane. The invention is the initiative of using the assembled corrugated steel plate material to carry out the construction of the underground comprehensive pipe gallery, solves the problem that the municipal underground comprehensive pipe gallery needs open cut construction, saves the steps of primary lining and temporary supporting compared with the traditional concrete-structured comprehensive pipe gallery, is simple, convenient and quick, greatly improves the construction speed, saves the construction cost, and has excellent popularization and application values in municipal construction engineering.
Description
Technical Field
The invention relates to a construction method of an urban underground comprehensive pipe gallery, and belongs to the technical field of municipal underground facility construction methods.
Background
In municipal pipeline arrangement, the underground space resources can be developed and utilized more scientifically and reasonably by building the comprehensive pipe gallery. The construction utility tunnel can concentrate six major types of pipelines in the municipal administration to arrange, forms neotype city underground facilities management system, is the development trend of current city municipal construction. In the construction of building an underground comprehensive pipe gallery, the corrugated steel structure is more and more widely applied due to the advantages of environmental protection, low cost, short construction period, earthquake resistance, disaster prevention, reliable operation and the like.
At present, the construction of many municipal utility tunnel all need dig the whole road surfaces open, arrange the pipeline again, refurbish the road surface again at last, take a lot of work, take time, construction cost is big. Meanwhile, in a plurality of sections, as the underground pipelines are generally deeper, the construction time is greatly increased by completely excavating, the urban traffic is greatly influenced, and great inconvenience is brought to the life of citizens.
With the application of a large number of underground comprehensive pipe galleries in municipal engineering, how to solve various defects caused by open excavation of the road surface, and the full play of the advantages of the corrugated steel structure in construction is the task faced by engineering technicians.
Disclosure of Invention
The invention aims to solve the technical problem of providing a subsurface excavation construction method for an assembled corrugated steel plate underground comprehensive pipe gallery, which adopts the specially designed assembled corrugated steel plate, can be assembled while tunneling underground, and solves the problem of how to support and assemble the assembled corrugated steel plate in the safest and rapid mode under the non-excavation condition.
The technical scheme for solving the technical problems is as follows:
an underground excavation construction method for an assembled corrugated steel plate underground comprehensive pipe gallery comprises the following steps:
a. manufacturing a vertical shaft spiral corrugated pipe of the comprehensive pipe gallery: the vertical shaft spiral corrugated pipe is upright, four reinforcing steel bar rings for hoisting are welded at the upper end opening of the vertical shaft spiral corrugated pipe, the lower part of the vertical shaft spiral corrugated pipe is connected with a spiral corrugated pipe tee, the diameter of the spiral corrugated pipe tee is matched with that of the transverse pipe gallery, one side of the lower part of the vertical shaft spiral corrugated pipe is provided with a connecting hole, the rear end of the spiral corrugated pipe tee is welded with the connecting hole of the vertical shaft spiral corrugated pipe, and the front end of the spiral corrugated pipe tee is welded with a flange for connecting an assembled corrugated steel plate of the transverse pipe gallery;
b. excavating a vertical shaft; the method comprises the steps of downwards excavating a vertical shaft at the position of an excavation starting point of a comprehensive pipe gallery, if the excavation depth is within 8 meters and slope release is allowed, and the soil is good and the well wall is not easy to collapse, mechanically excavating by using a hook machine, wherein the excavation diameter is 115% -125% of the design diameter, then vertically placing a vertical shaft helical bellows into the vertical shaft, and enabling a helical bellows tee at the lower part of the vertical shaft helical bellows to be opposite to the direction of a transverse pipe gallery;
c. and (3) entering a vertical shaft: firstly, adjusting the position of a spiral corrugated pipe tee joint at the lower part of a vertical shaft spiral corrugated pipe, then uniformly filling soil around the vertical shaft spiral corrugated pipe, enabling constructors to enter the lower part of the vertical shaft spiral corrugated pipe through a crane, and starting to manually excavate a transverse pipe gallery of a comprehensive pipe gallery from an outlet of the spiral corrugated pipe tee joint;
d. tunneling and assembling a transverse pipe gallery; firstly excavating the upper layer of the soil surface of the outlet of the spiral corrugated pipe tee joint, then connecting an assembled corrugated steel plate with the upper part of a flange of the outlet of the spiral corrugated pipe tee joint through a bolt, then using a jack and a stand column to temporarily support the assembled corrugated steel plate at the upper end of a connecting flange, excavating the earthwork below the support, then assembling a whole circle along the flange of the outlet of the spiral corrugated pipe tee joint, continuously excavating the earthwork below after the assembly of the first circle is completed, excavating and assembling the corrugated steel plate for one circle in a circulating forward manner, and aiming at the position by using a laser level instrument when excavating for one circle forwards;
e. setting a grouting opening: the assembly plates are provided with a grouting opening with the diameter of 80mm at the top of the pipe gallery every other truss, and the assembly sequence needs to be paid attention to during assembly to ensure that the grouting opening is positioned at the top of the pipe gallery;
f. manufacturing a grouting pipe: the grouting pipe is an iron pipe with the diameter of 80mm and the length of 300mm, the front end of the grouting pipe is made into a pointed shape so as to be conveniently inserted into a soil body, grouting holes are uniformly distributed on the side surface of the front end of the grouting pipe, the bottom of the grouting pipe is connected with a valve, and the rear part of the valve is provided with a quick connector which is connected with a grouting conveying pipeline;
g. grouting: the method comprises the steps of driving a transverse pipe gallery forwards for 5 meters every time, grouting through a grouting opening, inserting the front end of a grouting pipe into a reserved grouting opening during grouting, enabling the front end of the grouting pipe to reach gaps between the outer walls of assembled corrugated steel plates on the two sides and the top surface of the transverse pipe gallery and the surrounding soil body, controlling the depth of the front end of the grouting pipe entering the soil body to be 0.3 meter deepest, opening a valve of the grouting pipe for grouting, enabling the grouting pipe to enter the gaps between the outer walls of the assembled corrugated steel plates and the surrounding soil body, enabling the water cement ratio of grouting to be 0.8-1.2, adding water glass according to 1% -3% of the volume of the grout, adding a cement accelerator according to 5% of the weight of cement, improving the condensation speed, and enabling the grouting ending pressure to be 0.1-0.2 MPa.
According to the underground excavation construction method for the assembled corrugated steel plate underground comprehensive pipe gallery, in the step b of shaft excavation, if the excavation depth is deep and the site is not allowed to be set to a slope, or the soil quality is poor and the shaft wall is easy to collapse, a method for manually excavating and downwards placing the shaft helical bellows is adopted, namely: firstly, mechanically excavating to the maximum depth which can be excavated without slope, then arranging a portal frame at the position of the vertical shaft, hoisting the spiral corrugated pipe of the vertical shaft at the position of the vertical shaft, and when the spiral corrugated pipe of the vertical shaft enters the spiral corrugated pipe of the vertical shaft to excavate downwards, the spiral corrugated pipe of the vertical shaft is downwards moved by 0.5 meter when the spiral corrugated pipe of the vertical shaft is excavated by 0.5 meter until the designed excavation depth is reached.
According to the excavation construction method of the assembled corrugated steel plate underground comprehensive pipe gallery, in the step d of tunneling and assembling the transverse pipe gallery, earthwork is manually transported in the transverse pipe gallery by using a trolley, poured into a bucket and lifted to the ground by a truck-mounted crane, and soil on the ground cannot be stacked above the transverse pipe gallery.
According to the underground excavation construction method for the assembled corrugated steel plate underground comprehensive pipe gallery, the installation of pipe gallery supports and the arrangement of pipe fittings in the transverse pipe gallery are in accordance with DB13(J) T225-2017 corrugated steel comprehensive pipe gallery engineering technical regulations.
According to the underground excavation construction method for the assembled corrugated steel plate underground comprehensive pipe gallery, after all pipe fittings in the transverse pipe gallery are placed, the vertical shaft is provided with the rotary ladder or the crawling ladder, and the rotary ladder or the crawling ladder is required to meet the corresponding building engineering standard.
The invention has the beneficial effects that:
the method saves the step of concrete primary lining necessary in shaft excavation, and is simple and quick. In the traditional shaft excavation method, in order to prevent the collapse of a shaft wall, a mode of mechanical excavation and artificial primary lining is adopted. The primary lining generally adopts anchor rods, soil nail walls, steel wire meshes, sprayed concrete and other methods, the construction is complex, and the aim of safe construction is only achieved. And the method for hoisting the vertical shaft spiral corrugated pipe completely omits complicated construction steps, and the wall of the spiral corrugated pipe not only achieves the purpose of preventing the well wall from collapsing, but also facilitates the installation of the assembled corrugated steel plate.
The invention solves the problem of how to adopt the assembled corrugated steel plate for assembly and support during underground excavation. The traditional corrugated assembled plate is mainly applied to structures with relatively stable top surfaces, such as tunnels, bridge openings, subways and the like. In the underground excavation engineering, the top surface is a soil surface which collapses at any time, anchor rods, sprayed concrete and I-shaped steel are generally adopted for supporting in a coal mine roadway, cantilever beams are added when necessary, and the construction is complex and slow. The construction method adopts the assembled plates to carry out tunneling and assembling simultaneously, not only plays a role of temporary support, but also can be used as a permanent support facility, and greatly saves redundant construction steps.
The construction method of the invention greatly facilitates the construction of temporary pipelines. Utility tunnel when the construction, can arrange electric wire and tuber pipe temporarily unavoidably. Traditional concrete utility tunnel needs additionally to fix and arrange in the concrete nailing piece, and this construction method has utilized the unique structure of assembling corrugated steel plate, ties up the iron wire through two turn-ups screws and arranges, and is nimble simple and easy dismantlement.
The underground excavation construction method of the assembled corrugated steel plate underground comprehensive pipe gallery solves the problem of how to use the novel assembled corrugated steel plate as the main material to carry out the construction of the underground comprehensive pipe gallery, greatly improves the construction speed, saves the construction cost, and has excellent popularization and application values in municipal construction engineering.
Drawings
FIG. 1 is a schematic structural view of a shaft helical bellows and a helical bellows tee of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of the tunneling and splicing construction of the present invention;
FIG. 4 is a schematic illustration of the grouting of the present invention;
fig. 5 is a schematic view of the structure of the grouting pipe.
The figures are labeled as follows: the vertical shaft spiral corrugated pipe comprises a vertical shaft spiral corrugated pipe 1, a spiral corrugated pipe tee 2, a vertical shaft 3, a transverse pipe gallery 4, an assembled corrugated steel plate 5, a grouting opening 6, a grouting pipe 7, a grouting hole 8, a gap 9 and a soil body 10.
Detailed Description
The comprehensive pipe gallery main body consists of a vertical shaft 3 and a transverse pipe gallery 4 with the length of a plurality of meters, wherein the vertical shaft 3 is a vertical shaft spiral corrugated pipe 1, and the transverse pipe gallery 4 is assembled and manufactured by assembling corrugated steel plates 5. The construction method of the present invention has been successfully implemented in engineering.
Fig. 1 and 2 show that four reinforcing rings used for hoisting are welded on the upper port of a vertical shaft helical bellows 1, the lower part of the vertical shaft helical bellows 1 is connected with a helical bellows tee joint 2, the diameter of the helical bellows tee joint 2 is matched with that of a transverse pipe gallery 4, a connecting hole is arranged on one side of the lower part of the vertical shaft helical bellows 1, the rear end of the helical bellows tee joint 2 is connected with the connecting hole of the vertical shaft helical bellows 1 in a welding manner, and the front end of the helical bellows tee joint 2 is welded with a flange which is used for connecting an assembled corrugated steel plate 5 of the transverse pipe gallery 4.
Fig. 3 shows that the shaft 3 of the invention is excavated as follows:
the shaft 3 is excavated downwards at the starting point position of the comprehensive pipe gallery excavation, if the excavation depth is within 8 meters and the slope is allowed to be placed, the soil is good and the well wall is not easy to collapse, a hook machine can be adopted for mechanical excavation, the excavation diameter is 115% -125% of the design diameter, then the shaft helical bellows 1 is vertically placed into the shaft 3, and the helical bellows tee joint 2 at the lower part of the shaft helical bellows 1 is opposite to the direction of the transverse pipe gallery 4.
In the excavation process of shaft 3, if the excavation depth is deep and the place is not allowed to be put on a slope, or the soil property is poor and the shaft wall is easy to collapse, the method of manually excavating and downwards putting shaft helical bellows 1 is adopted, namely: firstly, mechanical excavation is carried out to the maximum depth that the excavation can be carried out without slope release, then a portal frame is arranged at the position of a vertical shaft 3, the vertical shaft helical bellows 1 is hoisted at the position of the vertical shaft 3, constructors enter the vertical shaft helical bellows 1 to carry out downward excavation, and when the excavation is 0.5 m deep, the vertical shaft helical bellows 1 is downwards placed by 0.5 m until the designed excavation depth is reached.
Fig. 3 shows that after the shaft 3 is excavated, the constructor starts the construction of the transverse pipe gallery 4. The position of the helical bellows tee joint 2 of the lower part of the vertical shaft helical bellows 1 is adjusted firstly, then the soil is evenly filled around the vertical shaft helical bellows 1, constructors enter the lower part of the vertical shaft helical bellows 1 through a crane, and the constructors begin to manually excavate the transverse pipe gallery 4 of the comprehensive pipe gallery from the outlet of the helical bellows tee joint 2.
Fig. 3 shows, constructor excavates earlier the soil face upper strata of 2 exports of helical bellows tee bend, then with assemble corrugated steel plate 5 and pass through the flange upper portion of bolt with 2 exports of helical bellows tee bend and be connected, reuse jack and stand do interim support to the assembled corrugated steel plate 5 of flange upper end, excavate the earthwork of strutting the below, again carry out along assembling of 2 exports of helical bellows tee bend flanges a whole circle, accomplish the back of assembling of first circle, continue to excavate the earthwork of below, the one is for a circulation tunnelling forward and assemble corrugated steel plate 5, every forward tunnelling the one circle, need find the position with the laser level.
In actual operation, the assembled corrugated steel plates 5 have various connecting structures, including the corrugated steel plates which are connected by bolts after being lapped and the corrugated steel plates which are connected by bolts by welding flange edges.
Fig. 3 shows that in the process of tunneling and assembling the transverse pipe gallery 4, a constructor manually transports earthwork in the transverse pipe gallery 4 by using a trolley, the earthwork is poured into a bucket and lifted to the ground by a truck-mounted crane, and the ground soil cannot be stacked above the transverse pipe gallery.
Another important construction step of the invention is grouting, which needs to be provided with a grouting opening 6 and manufacture a grouting pipe 7.
Fig. 3 and 4 show that the grouting opening 6 is arranged by arranging a grouting opening with the diameter of 80mm at the top of the pipe gallery every two pieces of the assembled plate (namely, the distance between the front grouting opening and the rear grouting opening is 920 mm) before or during the excavation of the transverse pipe gallery 4,
fig. 5 shows that the grouting pipe 7 is an iron pipe with the diameter of 80mm and the length of 300mm, the front end of the grouting pipe 7 is made into a pointed shape to be conveniently inserted into the soil body 10, grouting holes 8 are evenly distributed on the circumference of the side surface of the front end of the grouting pipe 7, the bottom of the grouting pipe 7 is connected with a valve, and the rear part of the valve is provided with a quick coupling which is connected with a grouting conveying pipeline.
Fig. 3 and 4 show that when grouting is carried out, a transverse pipe gallery 4 is tunneled for 5 meters forwards, grouting is carried out through a grouting opening 6, the front end of a grouting pipe 7 is inserted into a reserved grouting opening 6 during grouting, the front end of the grouting pipe 7 reaches a gap 9 between the outer wall of an assembled corrugated steel plate 5 on two sides and the top surface of the transverse pipe gallery 4 and a surrounding soil body 10, the depth of the front end of the grouting pipe 7 entering the soil body 10 is controlled to be the deepest according to 0.3 meter, a valve of the grouting pipe 7 is opened for grouting, the grouting enters the gap 9 between the outer wall of the assembled corrugated steel plate 5 and the surrounding soil body 10, the water-cement ratio of the grouting can be 0.8-1.2, water glass is added according to 1-3% of the volume of the grout, a cement accelerator is added according to 5% of the weight of the cement, the setting speed is increased, and the grouting ending pressure is 0.1-0.2 MPa.
After grouting is finished, the grouting and soil body 10 cover the whole assembled corrugated steel plate 5, the assembled corrugated steel plate 5 is sealed, the grouting and the transverse pipe gallery 4 form a whole, and the transverse pipe gallery 4 is reinforced
After the construction of the transverse pipe gallery 4 is completed, the installation of the pipe gallery brackets and the arrangement of the pipe fittings in the transverse pipe gallery 4 are in accordance with technical regulations of DB13(J) T225-2017 corrugated steel comprehensive pipe gallery engineering. After the pipes in the transverse pipe gallery 4 are completely placed, the vertical shaft 3 is provided with the rotary ladder or the crawling ladder, and the rotary ladder or the crawling ladder accords with the corresponding building engineering specification.
One embodiment of the invention is as follows:
the diameter of the vertical shaft spiral corrugated pipe 1 is 3000mm, and the height of the vertical shaft spiral corrugated pipe is 8000 mm;
the diameter of the spiral corrugated pipe tee joint 2 is 3000 mm;
the diameter of the transverse pipe gallery 4 is 3000 mm;
the assembled corrugated steel plate 5 is in a corrugated steel plate structure which is connected by bolts after being lapped;
the top of the assembled plate is provided with a grouting opening every other one, the diameter of the grouting opening 6 is 80mm, and the distance between the front grouting opening 6 and the rear grouting opening 6 is 920 mm;
the diameter of the grouting pipe 7 is 80mm, and the diameter of the grouting hole 8 is 15 mm.
Claims (4)
1. The underground excavation construction method for the assembled corrugated steel plate underground comprehensive pipe gallery is characterized by comprising the following steps of: the method comprises the following steps:
a. manufacturing a vertical shaft spiral corrugated pipe (1) of the comprehensive pipe gallery: the vertical shaft spiral corrugated pipe (1) is vertical, four reinforcing steel bar rings for hoisting are welded at the upper end opening of the vertical shaft spiral corrugated pipe (1), the lower part of the vertical shaft spiral corrugated pipe (1) is connected with a spiral corrugated pipe tee joint (2), the diameter of the spiral corrugated pipe tee joint (2) is matched with that of a transverse pipe gallery (4), a connecting hole is formed in one side of the lower part of the vertical shaft spiral corrugated pipe (1), the rear end of the spiral corrugated pipe tee joint (2) is welded with the connecting hole of the vertical shaft spiral corrugated pipe (1), and a flange of an assembled corrugated steel plate (5) connected with the transverse pipe gallery (4) is welded at the front end of the spiral corrugated pipe tee joint;
b. excavating a vertical shaft (3); the method comprises the steps of downwards excavating a vertical shaft (3) at the position of an excavation starting point of a comprehensive pipe gallery, if the excavation depth is within 8 meters and slope release is allowed, and the soil is good and the well wall is not easy to collapse, mechanically excavating by using a hook machine, wherein the excavation diameter is 115% -125% of the design diameter, then vertically placing a vertical shaft spiral corrugated pipe (1) into the vertical shaft (3), and enabling a spiral corrugated pipe tee joint (2) at the lower part of the vertical shaft spiral corrugated pipe (1) to be opposite to the direction of a transverse pipe gallery (4); if the excavation depth is deep, the slope is not allowed to be placed in a field, or the soil quality is poor, the collapse of a well wall is easy to occur, a method of excavating while descending the vertical shaft spiral corrugated pipe (1) is adopted, mechanical excavation is firstly carried out to the maximum depth which can be excavated without the slope, then a portal frame is arranged at the position of the vertical shaft (3), the vertical shaft spiral corrugated pipe (1) is hoisted at the position of the vertical shaft (3), constructors enter the vertical shaft spiral corrugated pipe (1) to excavate downwards, and the vertical shaft spiral corrugated pipe (1) is descended by 0.5 meter every time the excavation depth is 0.5 meter until the designed excavation depth is reached;
c. access shaft (3): firstly, adjusting the position of a spiral corrugated pipe tee joint (2) at the lower part of a vertical shaft spiral corrugated pipe (1), then uniformly filling soil around the vertical shaft spiral corrugated pipe (1), entering the lower part of the vertical shaft spiral corrugated pipe (1) by a constructor through a crane, and manually excavating a transverse pipe gallery (4) of a comprehensive pipe gallery from the outlet of the spiral corrugated pipe tee joint (2) by the constructor;
d. tunneling and assembling the transverse pipe gallery (4); firstly excavating the upper layer of the soil surface at the outlet of the helical bellows tee joint (2), then connecting an assembled corrugated steel plate (5) with the upper part of a flange at the outlet of the helical bellows tee joint (2) through a bolt by using the assembled corrugated steel plate (5), then temporarily supporting the assembled corrugated steel plate (5) at the upper end of a connecting flange by using a jack and a stand column, excavating the earthwork below the support, then assembling a whole circle along the flange at the outlet of the helical bellows tee joint (2), continuously excavating the earthwork below after the first circle of assembly is completed, excavating and assembling the corrugated steel plate (5) forwards in a circle, and excavating one circle in each forward direction, wherein the position is required to be accurately found by using a laser level;
e. arranging a grouting opening (6): the assembly plates are provided with a grouting opening with the diameter of 80mm at the top of the pipe gallery every other truss, and the assembly sequence needs to be paid attention to during assembly to ensure that the grouting opening is positioned at the top of the pipe gallery;
f. manufacturing a grouting pipe (7): the grouting pipe (7) is an iron pipe with the diameter of 80mm and the length of 300mm, the front end of the grouting pipe (7) is made into a pointed shape so as to be conveniently inserted into a soil body (10), grouting holes (8) are uniformly distributed on the side surface of the front end of the grouting pipe (7) in the circumferential direction, the upper part of the grouting pipe (7) is connected with a valve, the rear part of the valve is provided with a quick joint, and the quick joint is connected with a grouting conveying pipeline;
g. grouting: the method comprises the steps that every 5 meters of a transverse pipe gallery (4) is tunneled forwards, grouting is conducted through a grouting opening (6), during grouting, the front end of a grouting pipe (7) is inserted into a reserved grouting opening (6), the front end of the grouting pipe (7) reaches gaps (9) between the outer walls of assembled corrugated steel plates (5) on the two sides and the top surface of the transverse pipe gallery (4) and surrounding soil bodies (10), the depth of the front end of the grouting pipe (7) entering the soil bodies (10) is controlled to be 0.3 meter deepest, a valve of the grouting pipe (7) is opened for grouting, the grouting enters the gaps (9) between the outer walls of the assembled corrugated steel plates (5) and the surrounding soil bodies (10), the water cement ratio of the grouting slurry is 0.8-1.2, water glass is added according to 1-3% of the volume of the slurry, a cement accelerator is added according to 5% of the weight of the cement, the condensation speed is increased, and the grouting ending pressure is 0.1-0.2 MPa.
2. The underground excavation construction method for the assembled corrugated steel plate underground comprehensive pipe gallery according to claim 1, characterized in that: in the step d of tunneling and assembling of the transverse pipe gallery (4), manual earthwork transportation is carried out in the transverse pipe gallery (4) by using a trolley, the earthwork is poured into a bucket and lifted to the ground by a truck-mounted crane, and the ground soil cannot be stacked above the transverse pipe gallery (4).
3. The underground excavation construction method for the assembled corrugated steel plate underground comprehensive pipe gallery according to claim 1, characterized in that: the installation of the pipe rack support and the arrangement of the pipe fittings in the transverse pipe rack (4) should follow DB13(J) T225-.
4. The underground excavation construction method for the assembled corrugated steel plate underground comprehensive pipe gallery according to claim 1, 2 or 3, characterized in that: after the pipes in the transverse pipe gallery (4) are completely placed, the vertical shaft (3) is installed with the ladder stand, and the ladder stand is required to accord with the corresponding building engineering specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735067.2A CN110552702B (en) | 2019-08-09 | 2019-08-09 | Underground excavation construction method for assembled corrugated steel plate underground comprehensive pipe gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735067.2A CN110552702B (en) | 2019-08-09 | 2019-08-09 | Underground excavation construction method for assembled corrugated steel plate underground comprehensive pipe gallery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110552702A CN110552702A (en) | 2019-12-10 |
| CN110552702B true CN110552702B (en) | 2021-09-07 |
Family
ID=68737242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735067.2A Active CN110552702B (en) | 2019-08-09 | 2019-08-09 | Underground excavation construction method for assembled corrugated steel plate underground comprehensive pipe gallery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552702B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165238A (en) * | 2021-10-27 | 2022-03-11 | 中铁第一勘察设计院集团有限公司 | Socket type supporting structure for ventilation shaft of railway tunnel and construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2231358B (en) * | 1989-04-07 | 1993-01-06 | Petroleo Brasileiro Sa | Packer centralizing device |
| JPH07317488A (en) * | 1994-05-20 | 1995-12-05 | Kasuga Sangyo:Kk | Bar arranging device of fume pipe for excavating shaft |
| CN1485505A (en) * | 2003-08-29 | 2004-03-31 | 北京市城市建设工程研究院 | Slip casting lattice pipe with double plug and construction process |
| CN101525881A (en) * | 2009-04-01 | 2009-09-09 | 中铁二院工程集团有限责任公司 | Structure of karst strata pile holes protecting wall and method for constructing pile holes |
| CN202718228U (en) * | 2012-06-21 | 2013-02-06 | 南安市华益塑胶制造有限公司 | Steel strip reinforced polyethylene spiral corrugated pipe type inspection well |
| CN104632249A (en) * | 2014-12-05 | 2015-05-20 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel system supporting technology used in loose and soft broken surrounding rock |
| CN205776329U (en) * | 2016-05-25 | 2016-12-07 | 南京联众建设工程技术有限公司 | Corrugated steel structure underground pipe gallery |
-
2019
- 2019-08-09 CN CN201910735067.2A patent/CN110552702B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2231358B (en) * | 1989-04-07 | 1993-01-06 | Petroleo Brasileiro Sa | Packer centralizing device |
| JPH07317488A (en) * | 1994-05-20 | 1995-12-05 | Kasuga Sangyo:Kk | Bar arranging device of fume pipe for excavating shaft |
| CN1485505A (en) * | 2003-08-29 | 2004-03-31 | 北京市城市建设工程研究院 | Slip casting lattice pipe with double plug and construction process |
| CN101525881A (en) * | 2009-04-01 | 2009-09-09 | 中铁二院工程集团有限责任公司 | Structure of karst strata pile holes protecting wall and method for constructing pile holes |
| CN202718228U (en) * | 2012-06-21 | 2013-02-06 | 南安市华益塑胶制造有限公司 | Steel strip reinforced polyethylene spiral corrugated pipe type inspection well |
| CN104632249A (en) * | 2014-12-05 | 2015-05-20 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel system supporting technology used in loose and soft broken surrounding rock |
| CN205776329U (en) * | 2016-05-25 | 2016-12-07 | 南京联众建设工程技术有限公司 | Corrugated steel structure underground pipe gallery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110552702A (en) | 2019-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110821503B (en) | Construction method for main body of ultra-deep shield section air shaft after tunnel advance | |
| CN104612162B (en) | A kind of Deep Foundation Pit of Metro Stations excavation construction method | |
| CN109026064B (en) | Construction method for large-span multi-arch tunnel with semi-bright and semi-dark | |
| CN108842819B (en) | Urban rail transit cable line tunnel construction method | |
| CN111576431A (en) | Excavation method for foundation pit of four-layer subway station | |
| CN111997624A (en) | A construction method for shallowly buried large-section undercut rectangular tunnel | |
| CN207777770U (en) | A kind of precast spliced pipe fitting jacking system | |
| CN107795749A (en) | A kind of precast spliced pipe fitting jacking system and its construction method | |
| CN106013052A (en) | Steel sheet pile and open caisson combined underground garage and construction method thereof | |
| CN108412519A (en) | The slight large deformation single-track tunnel suspension device of highlands soft rock and construction method | |
| CN110566223B (en) | Deep-buried PBA subway station section design method | |
| CN111395391B (en) | Construction method for multi-hole rectangular jacking pipe and light and dark excavation joint pipe gallery joint | |
| CN207892615U (en) | A kind of three step Rapid Construction of Tunnels structure of big arch springing based on pre-timbering with tubular prop | |
| CN112727466A (en) | Construction method for support-free prefabricated assembled type shield tunnel air shaft structure | |
| CN111734425A (en) | Construction method of underground excavation tunnel for downwards passing through airport terminal building | |
| CN114411756A (en) | Construction method and construction device for open-cut foundation pit of water-rich sand layer subway station without precipitation | |
| CN209723033U (en) | Pipe jacking working well applicable to desert waterless sand layer area | |
| CN113898007B (en) | Semi-inverse construction method for long-span corridor structure along street | |
| CN110552702B (en) | Underground excavation construction method for assembled corrugated steel plate underground comprehensive pipe gallery | |
| CN110735641B (en) | Construction method of transfer passage of underpass pipeline | |
| CN109854281A (en) | The method for protecting support of the lower rock compound cross-section stratum jacking construction of upper soil | |
| CN111379273A (en) | Construction method of corrugated steel comprehensive pipe gallery | |
| CN209586373U (en) | The support system of the lower rock compound cross-section stratum jacking construction inlet and outlet cave of upper soil | |
| CN114737979B (en) | Construction method for continuously passing large-diameter water conveying pipeline downwards in shield region | |
| CN113529830B (en) | Shallow Buried Tunnel Adjacent Building Isolation-Underpinning Combination Reinforcement Structure and Its Construction Technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |