Inspection chamber peripheral backfilling method and application thereof

An inspection well and layered backfilling technology, which is applied to fill, waterway systems, drainage structures, etc., can solve problems such as affecting the comfort and safety of vehicles, settlement of inspection wells, and small backfilling area, so as to reduce the downfall around inspection wells. sink, increase stability and shear resistance, and ensure the effect of construction quality

Inactive Publication Date: 2018-08-07
LUOYANG MUNICIPAL CONSTR GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the space around the inspection well is small, the backfill area is small, and there is a well-built inspection well shaft, so only a small tamping machine can be used for backfilling. Such backfilling is difficult to meet the inspection well backfill compactness standard stipulated in the national regulations. , and the depth of general municipal road inspection wells is more than 4 meters, and some construction projects can reach more than 10 meters, let alone the compaction standard
Therefore, due to the reduction of compaction, the excavation depth of the inspection well is too deep, and the construction period cannot wait for the natural settlement after the foundation pit is backfilled, it is very easy to cause settlement around the inspection well after one to two years after the construction is completed, affecting Comfort and safety of vehicles on the road

Method used

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  • Inspection chamber peripheral backfilling method and application thereof
  • Inspection chamber peripheral backfilling method and application thereof
  • Inspection chamber peripheral backfilling method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0075] A method for backfilling around an inspection well, comprising the following steps:

[0076] (1) Inspection well masonry, experiment and acceptance;

[0077] (2) cleaning the base, leveling and compacting;

[0078] (3) Set the first geogrid at the bottom around the inspection well, and then use loess, lime soil or natural graded gravel backfill materials for layered backfill compaction. The compaction thickness of each layer of backfill is 20cm. After backfilling 50cm, Set up the second geogrid, and then use loess, lime soil or natural graded gravel backfill materials for layered backfill compaction. The compaction thickness of each layer of backfill is 20cm. After backfilling 50cm, set the third geotechnical Grid, so repeated, until backfilling to the design elevation of 2m.

Embodiment 2

[0080] A method for backfilling around an inspection well, comprising the following steps:

[0081] (1) Inspection well masonry, experiment and acceptance;

[0082] (2) cleaning the base, leveling and compacting;

[0083] (3) Set the first geogrid at the bottom around the inspection well, and then use loess, lime soil or natural graded gravel backfill materials for layered backfill compaction. The compaction thickness of each layer of backfill is 18cm. After backfilling 60cm, Set up the second geogrid, and then use loess, lime soil or natural graded gravel backfill materials for layered backfill compaction. The compaction thickness of each layer of backfill is 18cm. After backfilling 60cm, set the third geotechnical Grid, so repeated, until backfilling to the design elevation of 2.5m.

Embodiment 3

[0085] A method for backfilling around an inspection well, comprising the following steps:

[0086] (1) Inspection well masonry, experiment and acceptance;

[0087] (2) cleaning the base, leveling and compacting;

[0088] (3) Set the first geogrid at the bottom around the inspection well, and then use loess, lime soil or natural graded gravel backfill materials for layered backfill compaction. The compaction thickness of each layer of backfill is 18cm. After backfilling 55cm, Then set up the second geogrid, and then use loess, lime soil or natural graded gravel backfill materials for layered backfill compaction. The compaction thickness of each layer of backfill is 18cm. After backfilling 55cm, set the third geotechnical Grid, so repeated until backfilling to the design elevation of 2.2m.

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Abstract

The invention discloses an inspection chamber peripheral backfilling method and application thereof and relates to the technical field of municipal road construction. The inspection chamber peripheralbackfilling method comprises the steps of adding a geogrid per backfilling of 40-70 cm thick backfilling material, and repeating until backing filling is complete. The technical problem is alleviatedthat driving comfort and safety of a vehicle on a road are affected by high proneness of inspection chamber periphery to settling 1 to 2 years after construction of inspection chamber peripheral backfilling, which is due to the reasons that, for instance, compactness decreases, excavation depth of the inspection chamber is too great, and the construction period is unable to wait for natural settling occurred after foundation pit backfilling. Geogrids are added during backfilling, so that strength and overall stability of terrain at the periphery of the inspection chamber are improved, soil settling around the inspection chamber is controlled, road pavement flatness is guaranteed, and driving comfort and safety of a vehicle on a road are improved.

Description

technical field [0001] The invention relates to the technical field of municipal road construction, in particular to a backfilling method and application around an inspection well. Background technique [0002] With the process of urban modernization, people have higher and higher requirements for urban municipal facilities. In order to meet people's normal life and the needs of drainage in rainy days, pipelines for removing rainwater and sewage must be set in municipal roads in cities, and inspection wells for rainwater and sewage must be set for the daily maintenance of pipelines. Due to the constraints of various conditions and the need for road drainage, the inspection wells for rainwater and sewage are often set in the middle of the road. During the use of the road, the road surface around the inspection well often sinks, causing the vehicle to bump when passing the inspection well, which seriously affects the safety of driving. [0003] The main reason for the subsid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03F5/02E02D17/18
Inventor 高国强张志勇
Owner LUOYANG MUNICIPAL CONSTR GRP CORP
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