CN115434336A - Underground engineering backfill construction method - Google Patents
Underground engineering backfill construction method Download PDFInfo
- Publication number
- CN115434336A CN115434336A CN202211206217.9A CN202211206217A CN115434336A CN 115434336 A CN115434336 A CN 115434336A CN 202211206217 A CN202211206217 A CN 202211206217A CN 115434336 A CN115434336 A CN 115434336A
- Authority
- CN
- China
- Prior art keywords
- waterproof
- wall
- wire mesh
- steel wire
- soil
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 239000002689 soil Substances 0.000 claims abstract description 26
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000004927 clay Substances 0.000 claims abstract description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 3
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- E02D17/18—Making embankments, e.g. dikes, dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The invention relates to the technical field of underground engineering construction, in particular to a backfill construction method for underground engineering.A steel bar drag hook is pre-embedded when an outer wall of a basement structure is poured, slaked lime and clay are prefabricated into soil blocks according to the proportion of 3; laying a steel wire mesh, and fixedly connecting the steel wire mesh with the reserved steel bars; and backfilling earthwork. The invention can effectively protect the waterproof layer of the basement structure outer wall, effectively reduce the risk of leakage of the waterproof layer and ensure the construction quality.
Description
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to a backfill construction method for an underground project.
Background
According to the investigation and analysis in recent years, the high permeability of underground works becomes a common phenomenon, and there are many reasons for such high permeability, for example, the waterproof design is not reasonable, the quality of waterproof material is not critical, the waterproof construction is not standardized, etc., and the failure of the protection of the finished waterproof layer is also one of the main reasons for high permeability.
For the actual earthwork backfill construction of the deep foundation pit engineering, 2; the existing design is mostly that the heated board is pasted outside the waterproof layer, fills along with pasting, in time adopts the heated board as waterproof layer, often accompanies building rubbish such as rubble, fragment of brick, lime-ash in the backfill soil, and as the cystosepiment of waterproof layer, generally all adopt low-cost, low-strength cystosepiment moreover, so at the on-the-spot backfill in-process, the cystosepiment is smashed by rubble, fragment of brick etc. in the backfill soil very easily, has just also lost waterproof effect naturally.
Disclosure of Invention
In order to solve the technical problems, the invention provides a backfill construction method for underground engineering, which aims to solve the problem that the outer wall of a basement structure is damaged in the traditional backfill construction process to cause leakage of waterproof engineering.
The invention adopts the following technical scheme:
a backfill construction method for underground engineering comprises the following steps:
the method comprises the following steps: embedding steel bar draw hooks when the outer wall of the basement structure is poured, wherein the steel bar draw hooks are arranged according to quincuncial piles at intervals of 2.0m by 2.0m, and the embedding depth is 200mm;
step two: before earthwork backfilling, lime hydrate and clay are prefabricated into soil blocks according to the proportion of 3;
step three: paving the prefabricated soil blocks on the whole waterproof surface from bottom to top in a manual mode to form a waterproof soil wall, wherein the height of the waterproof soil wall is up to the top elevation of a waterproof layer;
step four: after the height of the waterproof soil wall reaches 1.5m, laying a steel wire mesh sheet, fixedly connecting the steel wire mesh sheet with a reserved steel bar, bending the part, reserved and exposed, of the steel bar drag hook by 90 degrees in the middle, and welding or binding and fixing a bent section with the steel wire mesh sheet;
step five: and (7) backfilling earthwork.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the waterproof soil wall is built by utilizing the lime soil wall of 3.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the connection of a steel mesh and embedded steel bars;
FIG. 3 is a schematic view of the reinforcement wire retractor;
FIG. 4 is a schematic view showing the arrangement of the steel bar pulling hooks on the outer wall of the basement structure;
in the figure: a basement structure exterior wall 1; a waterproof earth wall 2; a steel wire mesh 3; and a steel bar drag hook 4.
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
The invention relates to a backfill construction method for underground engineering, which comprises the following steps:
the method comprises the following steps: reinforcing bar waste material when utilizing major structure to construct makes reinforcing bar drag hook 4, and drag hook length 4 is 600mm at least, can adopt the welded mode to splice when the length of waste material reinforcing bar is not enough, pre-buried reinforcing bar drag hook 4 when basement structure outer wall 1 is pour, and reinforcing bar drag hook 4 arranges according to interval 2.0m x 2.0m quincuncial pile, as shown in fig. 1, buries the degree of depth 200mm underground.
Step two: before backfilling earthwork, slaked lime and clay are prefabricated into square earthwork with the size of 200mm, 200mm and 200mm according to the proportion of 3.
Step three: as shown in figure 1, the prefabricated soil blocks are manually paved on the whole waterproof surface from bottom to top to form a waterproof soil wall 2 with the thickness of 200mm, the height is up to the top elevation of the waterproof layer, and the construction height is not more than 1.5m.
Step four: as shown in fig. 2, after the height of the waterproof soil wall 2 reaches 1.5m, a layer of phi 10-interval 150mm steel wire mesh sheet 3 is laid on the outer side of the waterproof soil wall 2, the lapping width of the steel wire mesh sheet 3 is not less than 300mm, the steel wire mesh sheet 3 is hung on the steel bar drag hook 4, as shown in fig. 3, the exposed part of the steel bar drag hook 4 is bent by 90 degrees in the middle, and the bent section is welded or bound with the mesh sheet.
Step five: and backfilling earthwork.
In the embodiment, the soil blocks are preferably prefabricated in factories, so that the flatness of the soil blocks is ensured; increase steel wire mesh 3 through the outside at waterproof soil wall 2, and steel wire mesh 3's overlap joint width is not less than 300mm, can effectively play fixed waterproof soil wall 2's effect, guarantees the holistic stability of waterproof soil wall 2, prevents that the wall body from collapsing and hurts the people.
According to the invention, effective finished product protection is carried out on the waterproof layer of the basement structure outer wall 1, the quality problem of waterproof engineering leakage caused by natural settlement of backfill soil, rough construction in field construction and the like does not need to be considered, and the high strength and rigidity of the lime-soil wall of the structure 3.
The above description is only for the specific embodiments of the present invention, but the protection of the present invention is not limited thereto, and all equivalent changes or substitutions to the technical features of the present invention which can be made by those skilled in the art are included in the protection scope of the present invention.
Claims (1)
1. The underground engineering backfill construction method is characterized by comprising the following steps:
the method comprises the following steps: embedding steel bar draw hooks when the outer wall of the basement structure is poured, wherein the steel bar draw hooks are arranged according to quincuncial piles at intervals of 2.0m by 2.0m, and the embedding depth is 200mm;
step two: before earthwork backfilling, slaked lime and clay are prefabricated into a soil block according to the proportion of 3;
step three: paving the prefabricated soil blocks on the whole waterproof surface from bottom to top in a manual mode to form a waterproof soil wall, wherein the height of the waterproof soil wall is up to the top elevation of a waterproof layer;
step four: after the height of the waterproof soil wall reaches 1.5m, a steel wire mesh is laid, the steel wire mesh is fixedly connected with a reserved steel bar, the part, exposed in advance, of the steel bar drag hook is bent for 90 degrees in the middle, and a bent section is welded or bound and fixed with the steel wire mesh;
step five: and (7) backfilling earthwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211206217.9A CN115434336A (en) | 2022-09-29 | 2022-09-29 | Underground engineering backfill construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211206217.9A CN115434336A (en) | 2022-09-29 | 2022-09-29 | Underground engineering backfill construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115434336A true CN115434336A (en) | 2022-12-06 |
Family
ID=84251348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211206217.9A Pending CN115434336A (en) | 2022-09-29 | 2022-09-29 | Underground engineering backfill construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115434336A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0721905D0 (en) * | 2007-11-07 | 2007-12-19 | Enhanced Man Uk Ltd | Block panel modules and a tieback wall constructed therefrom |
| CN205637180U (en) * | 2016-05-18 | 2016-10-12 | 常德市万福达环保节能建材有限公司 | Waterproof structure of basement |
| CN109610516A (en) * | 2018-11-28 | 2019-04-12 | 成都建工第八建筑工程有限公司 | Retaining wall method at poured band of outer wall of basement |
| CN110593321A (en) * | 2019-09-27 | 2019-12-20 | 杭州悦为科技有限公司 | Construction method of basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system |
| CN112647537A (en) * | 2020-12-19 | 2021-04-13 | 中交二公局萌兴工程有限公司 | Pipe gallery construction process |
-
2022
- 2022-09-29 CN CN202211206217.9A patent/CN115434336A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0721905D0 (en) * | 2007-11-07 | 2007-12-19 | Enhanced Man Uk Ltd | Block panel modules and a tieback wall constructed therefrom |
| CN205637180U (en) * | 2016-05-18 | 2016-10-12 | 常德市万福达环保节能建材有限公司 | Waterproof structure of basement |
| CN109610516A (en) * | 2018-11-28 | 2019-04-12 | 成都建工第八建筑工程有限公司 | Retaining wall method at poured band of outer wall of basement |
| CN110593321A (en) * | 2019-09-27 | 2019-12-20 | 杭州悦为科技有限公司 | Construction method of basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system |
| CN112647537A (en) * | 2020-12-19 | 2021-04-13 | 中交二公局萌兴工程有限公司 | Pipe gallery construction process |
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