- Hengshui Aoxing Metal Products Co., Ltd
- China Manufacturer with main products:Grouting packer ,Lugeo testing equipment ,data acquisition recorder ,grouting pump ,drilling rig , drill pipe , ,drilling rig , drill pipe , drilling tools , drill bits ,drilling tools , drill bits ,Water injection sealing device for coal mines ,FUKO contact grouting pipe
Home > Products > Lugeo testing equipment > Air or Water Inflation Double Packer for Geotechnical Engineering Permeability Testing
Air or Water Inflation Double Packer for Geotechnical Engineering Permeability Testing
- 1000000 Piece / Pieces per Month
- TianJin
- T/T Other
- 1 days
- Permeability Rock Geotechnical Lugeon Test Equipment
- Geotechnical Water Permeability Rock Lugeon Test Recorder
- Standard Geotechnical Penetration Test Equipment
- Permeability Rock Lugeon Test Equipment
- Water Injection Hole Packer
- Rubber grouting double packers used in mining for water testing and grouting
Product Details
Brand Name: | aoxing | Place of Origin: | China | Model Number: | 60-1000mm |
Product Description
brief introduction
Water pressure test is an in-situ test that uses high-pressure method to inject water into the borehole, and calculates the development of rock fractures and permeability based on the water absorption of the rock mass. The water pressure test uses a sealing device to isolate a certain length of drilling test section, and then uses a fixed water head to press water into this section of drilling. The water seeps into the rock body through the cracks around the hole wall, and the final amount of seepage will tend to a stable value. The strength of rock permeability can be determined based on the water pressure head, length of the test section, and stable infiltration water volume. Usually expressed in terms of permeability q, in units of Lu. Definition: When the water pressure is 1MPa and 1L of water is injected per meter of length per minute, it is called 1Lu. In the equation q=Q/(P * L), q is the permeability rate, Lu; Q is the injection flow rate, L/min; P is the total pressure acting on the test section, MPa; L is the length of the test section.
Classification of water pressure tests: simple water pressure test, single point water pressure test, and five point water pressure test.
1. Pre test stage
Slowly increase the water pressure inside the pipeline to the specified test pressure and stabilize it for 30 minutes. If there is a decrease in pressure during this period, water can be injected to supplement the pressure, which should not exceed the test pressure;
Check for water leakage or damage at pipeline interfaces, fittings, etc;
When there is leakage or damage, the pressure test should be stopped in a timely manner, the cause should be identified, and corresponding measures should be taken before retesting.
2. Main experimental stage
Stop water injection and pressurization, stabilize for 15 minutes. After 15 minutes, when the pressure drop does not exceed the allowable pressure drop value, adjust the test pressure to the working pressure and maintain a constant pressure for 30 minutes. Conduct a visual inspection. If there is no water leakage, the water pressure test is qualified. [1]
3、 Main technical parameters:
Sealing hole diameter 30-200mm (can be processed according to user requirements)
Working pressure 1-80MPa (can be processed according to user needs)
The working flow can inject 3-4 tons of grout per hour
Sealing depth of 1-8000m
Model | OD (mm) | Expansion of scope (mm) | Hole dia. (mm) | Working pressure≤ (Mpa) | Compressive strength (Mpa) | |
Test pressure | Burst pressure | |||||
φ32-2 | 50±2.0 | 90 8-4 | 60 | 6 | 12 | 24 |
φ38-2 | 55±2.0 | 95 8-4 | 65 | 5 | 10 | 20 |
φ38-4 | 60±2.0 | 95 8-4 | 75 | 12 | 18 | 24 |
φ45-2 | 63±2.0 | 100 8-4 | 75 | 4 | 8 | 16 |
φ45-4 | 69±2.0 | 100 8-4 | 75 | 16 | 24 | 32 |
φ51-2 | 69±2.0 | 110 8-4 | 90 | 4 | 8 | 16 |
φ51-4 | 75±2.0 | 110 8-4 | 90 | 16 | 24 | 32 |
φ64-2 | 84±2.0 | 120 8-4 | 100 | 3 | 6 | 12 |
φ64-4 | 90±2.0 | 120 8-4 | 100 | 8 | 12 | 16 |
φ76-2 | 94±2.0 | 130 8-4 | 110 | 3 | 6 | 12 |
φ76-4 | 99±2.0 | 130 8-5 | 110 | 8 | 12 | 16 |
φ89-2 | 109±2.0 | 140 8-5 | 130 | 3 | 6 | 12 |
φ102-2 | 122±2.0 | 160 8-5 | 150 | 3 | 6 | 12 |
Contact Us
- Hengshui Aoxing Metal Products Co., Ltd
- Contact nameliu ting
- Addressingxian Development Zone Hengshui,Hebei
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