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Vertical well mechanical backfill compactness detection process

A technology of vertical well and compactness, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, instruments, and analysis materials, etc. It can solve the problems affecting construction progress, many affecting parameters, mud content, water content and density not up to standard, etc. question

Inactive Publication Date: 2021-05-11
ANHUI TULIP NEW ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a vertical well mechanical backfill compactness detection process to solve the problem that the existing vertical well backfill compactness detection proposed in the above-mentioned background technology is usually carried out after each layer is filled and pressed, resulting in many influencing parameters for rework, including If one of the mud volume, water content and density does not meet the standard, it needs to be refilled, which seriously affects the construction progress

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  • Vertical well mechanical backfill compactness detection process

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Experimental program
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Effect test

Embodiment 1

[0029] The vertical well mechanical backfill compactness testing process includes the following steps:

[0030] Step 1: Before backfilling, first clean the bottom of the well;

[0031] Step 2: Prepare sand and gravel filler, and use the on-site experimental equipment to conduct a test;

[0032] Step 3: Pave sand and gravel in layers, and use a vibrating tamping machine to compact each layer 3 times;

[0033] Step 4: Use the ring knife method to cut the soil sample of this layer, conduct a second experiment, and additionally calculate the compactness of the sample, and its standard value is set to 1.6g / cm 3 , the difference is plus or minus 0.081g / cm 3 ;

[0034] Step 5: Every time the layers are paved to 2 meters, it is a section. At this time, the quality of the soil layer of this section is further detected by the acoustic wave instrument;

[0035] Step 6: After the inspection is completed, repeat the above steps, and tamp and fill in layers to inspect the quality of the...

Embodiment 2

[0048] The vertical well mechanical backfill compactness testing process includes the following steps:

[0049] Step 1: Before backfilling, first clean the bottom of the well;

[0050] Step 2: Prepare sand and gravel filler, and use the on-site experimental equipment to conduct a test;

[0051] Step 3: Pave sand and gravel in layers, and compact each layer 4 times with a vibrating tamping machine;

[0052] Step 4: Use the ring knife method to cut the soil sample of this layer, conduct a second experiment, and additionally calculate the compactness of the sample, and its standard value is 1.65g / cm 3 , the difference is plus or minus 0.081g / cm 3 ;

[0053] Step 5: Every time the layers are paved to 2 meters, it is a section. At this time, the quality of the soil layer of this section is further detected by the acoustic wave instrument;

[0054] Step 6: After the inspection is completed, repeat the above steps, and tamp and fill in layers to inspect the quality of the soil la...

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Abstract

The invention discloses a vertical well mechanical backfill compactness detection process, relates to the technical field of compactness detection, and aims to solve the problems that the existing vertical well mechanical backfill compactness detection is generally carried out after each layer is filled, so that the influence parameters of reworking are more, one of the silt content, the water content and the density does not meet the standard, namely refilling is needed, and the construction progress is seriously influenced. The method comprises the steps that 1, before backfilling, the well bottom is cleaned; 2, a gravel filler is prepared, and primary detection is performed by using field experimental equipment; 3, gravel is laid in a layered mode, and each layer is compacted 3-4 times through a vibration type tamping machine; 4, the soil sample of the layer is cut through a cutting ring method, a secondary experiment is carried out, the compactness of the sample is additionally calculated, and the standard value range of the compactness is 1.54 g / cm <3>-1.71 g / cm <3>; 5, every time the layered paving is performed to 2 meters, a section is formed, and at the moment, the sound wave instrument is used for further detecting the soil layer quality of the section; and 6, after detection is completed, the steps are repeated, and the soil layer quality is detected through layered tamping and filling.

Description

technical field [0001] The invention relates to the technical field of compactness detection, in particular to a vertical well mechanical backfill compactness detection process. Background technique [0002] Backfilling soil refers to the soil that is returned for filling after the foundation and other underground works are completed during engineering construction. The backfill project refers to the construction process of borrowing soil and backfilling within 5m after the foundation, cushion and other concealed works are completed. Before construction, parameters such as the control range of moisture content of filling soil, thickness of virtual paving, and number of compaction times should be reasonably determined according to project characteristics, filling soil types, compactness requirements, and construction conditions; for important backfilling earthworks, the parameters should be Determined by compaction test. When backfilling, gravel soil, sandy soil and blastin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04
CPCG01N29/04G01N2291/023G01N2291/0289
Inventor 李磊李多德于海涛李春杰马娣
Owner ANHUI TULIP NEW ENERGY TECH