CN114215074A - Ditch earthwork backfilling method - Google Patents
Ditch earthwork backfilling method Download PDFInfo
- Publication number
- CN114215074A CN114215074A CN202210112127.7A CN202210112127A CN114215074A CN 114215074 A CN114215074 A CN 114215074A CN 202210112127 A CN202210112127 A CN 202210112127A CN 114215074 A CN114215074 A CN 114215074A
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- backfilling
- pipe
- trench
- backfilled
- soil
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000002689 soil Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 238000005056 compaction Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 17
- 239000004576 sand Substances 0.000 claims description 11
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 3
- CRQQGFGUEAVUIL-UHFFFAOYSA-N chlorothalonil Chemical compound ClC1=C(Cl)C(C#N)=C(Cl)C(C#N)=C1Cl CRQQGFGUEAVUIL-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000003864 humus Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- -1 and silt Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010802 sludge Substances 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
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/12—Back-filling of foundation trenches or ditches
-
- 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
Abstract
The invention belongs to the technical field of earthwork backfilling, and particularly relates to a pipe trench earthwork backfilling method which comprises the following steps: s4, backfill check: during backfilling, the groove is guaranteed to have no accumulated water, the bottom layer of the pipe ditch is an original soil layer, and the pipe ditch is smooth and smooth in gradient; s5, earth backfilling: when the pipe ditch is backfilled, the upper part of the pipe top is backfilled with excavated soil within 200mm or within 300mm around the cable; s6, backfilling and compacting: when the trench is backfilled, the trench should be backfilled symmetrically from two sides of structures such as pipelines and inspection wells at the same time, and the trench is compacted in a layered manner, so that the pipelines are ensured not to be displaced, and a limiting measure can be taken if necessary; s7, strictly performing according to the requirements in the backfilling process to ensure that the pipeline is not damaged in the pipe ditch backfilling project; the backfilling is carried out through the steps, so that the pipe ditch can be compacted thoroughly and firmly in the backfilling process, the bearing capacity of the pipe ditch is improved, and the backfilling quality of the pipe ditch is improved.
Description
Technical Field
The invention relates to the technical field of earthwork backfilling, in particular to a pipe trench earthwork backfilling method.
Background
The earthwork backfill is the fill of the building engineering, and mainly comprises foundation fill, foundation pit (groove) or pipe ditch backfill, indoor terrace backfill, outdoor site backfill leveling and the like.
In the prior art, soil needs to be filled into a pipe trench on a construction site to increase the bearing capacity of the pipe trench and stabilize the foundation, and in the traditional backfilling process, due to the influence of accumulated water, garbage and sundries, the pipe trench cannot be compacted firmly, so that the quality of the backfilled pipe trench is low, and the problem of rubber soil is easy to occur.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that in the traditional backfilling process, due to the influence of accumulated water, garbage and sundries, compaction cannot be firmly realized in the backfilling process, the quality of the backfilled pipe is low, and rubber soil is easy to appear in the backfilling process because the soil needs to be filled into the pipe to increase the bearing capacity of the pipe, so that the foundation is stable.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a pipe trench earthwork backfilling method, which comprises the following steps:
s1, backfill preparation: cleaning garbage, accumulated water and various impurities in the treatment foundation trench, wherein the underground water level is at least 0.5m below the excavation foundation surface, and keeping the drainage system to normally operate without backfilling with water;
s2, backfill detection: after the external waterproof construction of the structure is finished and the structure is qualified through inspection, earth backfilling can be carried out;
s3, laying a pipeline: after the pipeline is laid, the grooves can be backfilled after the approval of the party A (sectional acceptance and sectional backfilling);
s4, backfill check: during backfilling, the groove is guaranteed to have no accumulated water, the bottom layer of the pipe ditch is an original soil layer, and the pipe ditch is smooth and smooth in gradient;
s5, earth backfilling: when the pipe ditch is backfilled, the upper part of the pipe top is backfilled with excavated soil within 200mm or within 300mm around the cable;
s6, backfilling and compacting: when the trench is backfilled, the trench should be backfilled symmetrically from two sides of structures such as pipelines and inspection wells at the same time, and the trench is compacted in a layered manner, so that the pipelines are ensured not to be displaced, and a limiting measure can be taken if necessary;
s7, strictly performing according to the requirements in the backfilling process to ensure that the pipeline is not damaged in the pipe ditch backfilling project; on the construction site, the pipe trench needs to be filled with soil to increase the bearing capacity of the pipe trench, so that the foundation is stable, in the traditional backfilling process, due to the influence of accumulated water, garbage and sundries, the backfilling process cannot be firmly compacted, the quality of the pipe trench after backfilling is low, the problem of rubber soil is easily caused, the backfilling is performed through the steps, the pipe trench can be guaranteed to be thoroughly compacted and firm in the backfilling process, the bearing capacity of the pipe trench is high, and the backfilling quality of the pipe trench is improved.
Preferably, in the S5, in the backfilling process, the pipe should be backfilled to a pipe diameter height one time more than the top of the pipe immediately after the pipeline concealment project is qualified, the backfilling of the trench is performed within a range of 200mm from the bottom of the pipe to the top of the pipe, the trench must be backfilled manually, and the backfilling with a mechanical bulldozer is strictly prohibited; after the pipeline hiding project is accepted, the pipeline bottom is required to be backfilled within 200mm from the top of the pipeline, so that the backfilling quality can be ensured, and the pipeline is easily damaged if the pipeline is backfilled mechanically.
Preferably, the backfilling of the part of the pipe top with the thickness of more than 300mm can be simultaneously backfilled from two sides of the axis of the pipeline by using a machine, and is tamped or rolled; after the manual backfilling of 200mm of the top of the pipe is finished, the pipe is mechanically backfilled from two sides of the axis of the pipeline by using a machine, so that the tamping effect of the earthwork is improved.
Preferably, in S2, the specific backfill materials and requirements: the backfill material is selected from proper excavated soil which is judged by supervision or qualified materials which are transported outside by tests, and when the tamping compaction degree of the backfill soil does not reach the required compaction degree, a proper amount of lime soil, sand, gravel or other materials which can reach the required compaction degree can be added according to specific conditions; when the tamping density can not meet the requirement, the density of the earthwork is increased by adding the ash soil, the sand and the gravel, so that the density of the earthwork is higher in the tamping process.
Preferably, in S5, when backfilling above the pipe top with earth, the compaction degree requirement in the depth range below the roadbed surface is: the degree of compaction is not less than 95% in the range of 0-800 mm, not less than 93% in the range of 800-1500 mm, and not less than 90% below 1500 mm; by the measuring method and the measuring precision, the tamping quality of earthwork can be ensured, the firmness and the stability of the earthwork of the pipe trench are ensured, and the bearing capacity and the quality of the pipe trench are increased.
Preferably, in S6, when backfilling earthwork, the waterproof layer of the outer wall surface should be prevented from being damaged when backfilling earthwork on both sides of the side wall, and after each layer of backfilling is completed, tamping is performed by using a frog hammer; through adopting frog rammer to tamp for the density of earthwork increases, improves the bearing capacity and the intensity of earthwork.
Preferably, the S6 method includes the following steps:
s21, adopting a compaction mechanical compaction machine such as a road roller and a vibratory roller to realize compaction, wherein the running speed of the compaction mechanical compaction machine is not more than 2 km/h;
s22, when the soil covering of the pipeline is shallow, the bearing capacity of the pipeline is low, the load of the compaction tool is large or the backfill of the original soil can not reach the required compaction degree, the design is proposed to carry out trade-making change, for example, the backfill of other materials which have structural strength and can meet the requirements, such as lime soil, sand, gravel and the like is adopted;
s23, in the greening area, soil within 50cm below the ground surface is backfilled or replaced by soil suitable for turf and tree growth;
s24, when the road is within the road range, the requirement of the road backfill compactness is met; carry out the tamping through the road roller, improve the tamping speed of earthwork, and through adding lime soil, sand and gravel, increase the density of earthwork, and then increase the bearing capacity and the quality of earthwork, through at peripheral replacement lawn and trees, build green environment
The invention has the advantages that:
1. according to the pipe ditch earthwork backfilling method, the pipe ditch can be compacted thoroughly and firmly in the backfilling process, so that the bearing capacity of the pipe ditch is improved, and the backfilling quality of the pipe ditch is improved.
2. According to the invention, the compaction speed of the earthwork is improved by compacting through the road roller, the density of the earthwork is increased by adding lime soil, sand and gravel, the bearing capacity and the quality of the earthwork are further increased, and a green environment is built by replacing lawns and trees at the periphery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic flow diagram of the process of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
As an embodiment of the present invention; referring to fig. 1, a pipe trench earth backfilling method includes the following steps:
s1, backfill preparation: cleaning garbage, accumulated water and various impurities in the treatment foundation trench, wherein the underground water level is at least 0.5m below the excavation foundation surface, and keeping the drainage system to normally operate without backfilling with water;
s2, backfill detection: after the external waterproof construction of the structure is finished and the structure is qualified through inspection, earth backfilling can be carried out;
s3, laying a pipeline: after the pipeline is laid, the grooves can be backfilled after the approval of the party A (sectional acceptance and sectional backfilling);
s4, backfill check: during backfilling, the groove is guaranteed to have no accumulated water, the bottom layer of the pipe ditch is an original soil layer, and the pipe ditch is smooth and smooth in gradient;
s5: backfilling earthwork: when the pipe ditch is backfilled, the upper part of the pipe top is backfilled with excavated soil within 200mm or within 300mm around the cable;
s6, backfilling and compacting: when the trench is backfilled, the trench should be backfilled symmetrically from two sides of structures such as pipelines and inspection wells at the same time, and the trench is compacted in a layered manner, so that the pipelines are ensured not to be displaced, and a limiting measure can be taken if necessary;
s7, strictly performing according to the requirements in the backfilling process to ensure that the pipeline is not damaged in the pipe ditch backfilling project; on the construction site, the pipe trench needs to be filled with soil to increase the bearing capacity of the pipe trench, so that the foundation is stable, in the traditional backfilling process, due to the influence of accumulated water, garbage and sundries, the backfilling process cannot be firmly compacted, the quality of the pipe trench after backfilling is low, the problem of rubber soil is easily caused, the backfilling is performed through the steps, the pipe trench can be guaranteed to be thoroughly compacted and firm in the backfilling process, the bearing capacity of the pipe trench is high, and the backfilling quality of the pipe trench is improved.
As an embodiment of the present invention; in the S5, in the backfilling process, the pipe should be backfilled to the pipe diameter height which is one time of the pipe diameter height of the top of the pipe immediately after the pipeline hiding project is qualified, the backfilling of the groove is started from the base part of the bottom of the pipe to the range of 200mm above the top of the pipe, the groove must be backfilled manually, and the backfilling by a mechanical bulldozer is strictly forbidden; when the pipeline concealed type backfilling device works, after the pipeline concealed engineering acceptance is finished, the pipeline bottom is within 200mm of the pipeline top, manual backfilling is needed, the backfilling quality can be guaranteed, and if mechanical backfilling is used, the pipeline is easily damaged.
As an embodiment of the present invention; the backfill of the position of the pipe top more than 300mm can be simultaneously backfilled from two sides of the axis of the pipeline by using machinery, and is tamped or rolled; when the device works, after the manual backfilling of 200mm of the top of the pipe is finished, the device is used for mechanically backfilling from two sides of the axis of the pipeline, so that the tamping effect of the earthwork is improved.
As an embodiment of the present invention; in the step S1, before backfilling, no accumulated water is in the trench, and sludge, humus soil, frozen soil and organic substances cannot be backfilled; during operation, through the detection before backfilling, clear up and clean and tidy after discovering impurity such as ponding and rubbish, it is more to avoid impurity and rubbish, influences the quality and the degree of tamping that the earthwork backfilled.
As an embodiment of the present invention; in S2, the specific backfill materials and requirements: the backfill material is selected from proper excavated soil which is judged by supervision or qualified materials which are transported outside by tests, and when the tamping compaction degree of the backfill soil does not reach the required compaction degree, a proper amount of lime soil, sand, gravel or other materials which can reach the required compaction degree can be added according to specific conditions; when the device works, when the tamping density does not meet the requirement, the density of the earthwork is increased by adding the lime soil, the sand and the gravel, so that the density of the earthwork is higher in the tamping process.
As an embodiment of the present invention; in S5, when backfilling above the pipe top with earthwork, the compaction degree requirement of the depth range below the roadbed surface is: the degree of compaction is not less than 95% in the range of 0-800 mm, not less than 93% in the range of 800-1500 mm, and not less than 90% below 1500 mm; when the method works, the tamping quality of the earthwork can be ensured through the measuring method and the measuring precision, the firmness and the stability of the earthwork of the pipe ditch are ensured, and the bearing capacity and the quality of the pipe ditch are increased.
As an embodiment of the present invention; in the step S6, when backfilling earthwork, the waterproof layer of the outer wall surface is prevented from being damaged when the earthwork on the two sides of the side wall is backfilled, and after each layer of backfilling is completed, a frog ramming machine is adopted for ramming; during operation, through adopting frog ramming machine to tamp for the density of earthwork increases, improves the bearing capacity and the intensity of earthwork.
As an embodiment of the present invention; s6, the specific tamping method comprises the following steps:
s21, adopting a compaction mechanical compaction machine such as a road roller and a vibratory roller to realize compaction, wherein the running speed of the compaction mechanical compaction machine is not more than 2 km/h;
s22, when the soil covering of the pipeline is shallow, the bearing capacity of the pipeline is low, the load of the compaction tool is large or the backfill of the original soil can not reach the required compaction degree, the design is proposed to carry out trade-making change, for example, the backfill of other materials which have structural strength and can meet the requirements, such as lime soil, sand, gravel and the like is adopted;
s23, in the greening area, soil within 50cm below the ground surface is backfilled or replaced by soil suitable for turf and tree growth;
s24, when the road is within the road range, the requirement of the road backfill compactness is met; the during operation is tamped through the road roller, improves the speed of ramming of earthwork, and through adding lime soil, sand and gravel, increases the density of earthwork, and then increases the bearing capacity and the quality of earthwork, through replacing lawn and trees in the periphery, builds green environment.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. A pipe trench earthwork backfilling method is characterized in that: the method comprises the following steps:
s1, backfill preparation: cleaning garbage, accumulated water and various impurities in the treatment foundation trench, wherein the underground water level is at least 0.5m below the excavation foundation surface, and keeping the drainage system to normally operate without backfilling with water;
s2, backfill detection: after the external waterproof construction of the structure is finished and the structure is qualified through inspection, earth backfilling can be carried out;
s3, laying a pipeline: after the pipeline is laid, the grooves can be backfilled after the approval of the party A (sectional acceptance and sectional backfilling);
s4, backfill check: during backfilling, the groove is guaranteed to have no accumulated water, the bottom layer of the pipe ditch is an original soil layer, and the pipe ditch is smooth and smooth in gradient;
s5, earth backfilling: when the pipe ditch is backfilled, the upper part of the pipe top is backfilled with excavated soil within 200mm or within 300mm around the cable;
s6, backfilling and compacting: when the trench is backfilled, the trench should be backfilled symmetrically from two sides of structures such as pipelines and inspection wells at the same time, and the trench is compacted in a layered manner, so that the pipelines are ensured not to be displaced, and a limiting measure can be taken if necessary;
and S7, strictly performing according to the requirements in the backfilling process to ensure that the pipeline is not damaged in the backfill engineering of the pipe ditch.
2. The trench earth backfilling method according to claim 1, wherein: in the S5, in the backfilling process, the pipe should be backfilled to the pipe diameter height which is one time of the pipe diameter height of the top of the pipe immediately after the pipeline hiding project is qualified, the backfilling of the groove is performed within the range from the base part of the bottom of the pipe to the position 200mm above the top of the pipe, manual backfilling is required, and backfilling by a mechanical bulldozer is strictly forbidden.
3. The trench earth backfilling method according to claim 1, wherein: the backfill of the part of the pipe top with the diameter of more than 300mm can be simultaneously backfilled from the two sides of the axis of the pipeline by using a machine, and is tamped or rolled.
4. The trench earth backfilling method according to claim 1, wherein: in the step S1, before backfilling, the ditch is ensured to have no accumulated water, and silt, humus soil, frozen soil and organic substances cannot be backfilled.
5. The trench earth backfilling method according to claim 1, wherein: in S2, the specific backfill materials and requirements: the backfill material is selected from proper excavated soil which is judged by supervision or qualified materials which are transported outside by tests, and when the tamping compaction degree of the backfill soil does not reach the required compaction degree, a proper amount of lime soil, sand, gravel or other materials which can reach the required compaction degree can be added according to specific conditions.
6. The trench earth backfilling method according to claim 1, wherein: in S5, when backfilling above the pipe top with earthwork, the compaction degree requirement of the depth range below the roadbed surface is: the degree of compaction is not less than 95% in the range of 0-800 mm, not less than 93% in the range of 800-1500 mm, and not less than 90% in the range of 1500 mm.
7. The trench earth backfilling method according to claim 1, wherein: in the step S6, when backfilling earthwork, the waterproof layer of the outer wall surface is prevented from being damaged when backfilling earthwork on two sides of the side wall, and after each layer of backfilling is completed, tamping is carried out by adopting a frog tamper.
8. The trench earth backfilling method according to claim 7, wherein: s6, the specific tamping method comprises the following steps:
s21, adopting a compaction mechanical compaction machine such as a road roller and a vibratory roller to realize compaction, wherein the running speed of the compaction mechanical compaction machine is not more than 2 km/h;
s22, when the soil covering of the pipeline is shallow, the bearing capacity of the pipeline is low, the load of the compaction tool is large or the backfill of the original soil can not reach the required compaction degree, the design is proposed to carry out trade-making change, for example, the backfill of other materials which have structural strength and can meet the requirements, such as lime soil, sand, gravel and the like is adopted;
s23, in the greening area, soil within 50cm below the ground surface is backfilled or replaced by soil suitable for turf and tree growth;
and S24, when the road is in the range of the road, the requirement of the road backfill compactness is met.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210112127.7A CN114215074A (en) | 2022-01-29 | 2022-01-29 | Ditch earthwork backfilling method |
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| CN202210112127.7A CN114215074A (en) | 2022-01-29 | 2022-01-29 | Ditch earthwork backfilling method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114568063A (en) * | 2022-03-23 | 2022-06-03 | 南通木易永华景观工程有限公司 | Construction method for landscaping earthwork backfilling |
| CN115142388A (en) * | 2022-07-14 | 2022-10-04 | 浙江省围海建设集团股份有限公司 | Aqueduct concrete composite road mold construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7705555A (en) * | 1977-08-19 | 1979-03-20 | Promon Engenharia Sa | PROCESS FOR BUILDING A PREMOLDED GALLERY |
| CN111059353A (en) * | 2019-12-30 | 2020-04-24 | 青岛华德仪表工程有限公司 | Construction method of water supply pipeline |
-
2022
- 2022-01-29 CN CN202210112127.7A patent/CN114215074A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7705555A (en) * | 1977-08-19 | 1979-03-20 | Promon Engenharia Sa | PROCESS FOR BUILDING A PREMOLDED GALLERY |
| CN111059353A (en) * | 2019-12-30 | 2020-04-24 | 青岛华德仪表工程有限公司 | Construction method of water supply pipeline |
Non-Patent Citations (1)
| Title |
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| 张燕: "《管道工程技术》", 31 July 2007, 中央广播电视大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114568063A (en) * | 2022-03-23 | 2022-06-03 | 南通木易永华景观工程有限公司 | Construction method for landscaping earthwork backfilling |
| CN115142388A (en) * | 2022-07-14 | 2022-10-04 | 浙江省围海建设集团股份有限公司 | Aqueduct concrete composite road mold construction method |
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