Custom Rock Coal Permeability Coefficient Tester Manufacturers, Quotes

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Custom Rock Coal Permeability Coefficient Tester Manufacturers, Quotes

The rock permeability tester is a professional experimental equipment used to measure the permeability (permeability coefficient) of rocks or similar geotechnical materials. Its core function is to simulate the flow process of fluids (usually water or gas) in rock pores or fractures, and determine permeability parameters through quantitative analysis.Â

The permeability coefficient is the degree to which rock allows water to flow through it under the pressure difference of water. It is measured according to Darcy's law.

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Product Description

Working Principle

Based on Darcy's Law, the permeability coefficient is calculated by measuring the steady-state flow rate of a fluid under a constant pressure gradient.

Application Area

Geological Engineering: Evaluating the rock permeability of oil and gas reservoirs, geothermal extraction, and nuclear waste disposal facilities.
Civil Engineering: Rock Mass Seepage Characteristics in Tunnel and Slope Stability Analysis.
Research and Teaching: Experimental Research in Rock Mechanics and Hydrogeology.

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Standard Specifications:
Follow international standards such as ASTM D4525 and ISO 17313.

Technical Parameters

Category	Name	Parameter Details
Test Force	Maximum test force	2000KN (Optional: 300KN; 1000KN)
	Accuracy class	Level 1
Load parameters	Test force measurement range	0.4% ～ Full range (FS)
	Test force indication error	±0.5%
	Test force resolution	± 1/300000 of maximum force, constant resolution throughout the process
Control parameters	Range of force control rate	0.005 ～ 5% FS/s
	Control accuracy	<0.05% FS/s: within ±2%; ≥0.05% FS/s: within ±0.5%
	Test bench speed range	0.1 ～ 250mm/min (±0.2% accuracy)
Host Parameters	External dimensions	910 × 400 × 1200mm
	Oil cylinder piston stroke	150mm
	Max distance between plates	450mm
	Power & Weight	380V/50Hz; 900Kg
Pressure Systems	Surrounding pressure	0 ～ 20MPa ±0.02kPa (Adjustable, LCD display)
	Permeation reverse pressure	0 ～ 60MPa ±0.02kPa (Adjustable, LCD display)
Specimen & Tools	Test specimen size	Φ50mm×100mm; Φ25mm×100mm; Specialized rubber film
	Acquisition instrument	Water output accuracy: 0.2ml; Real-time automatic collection
	Triaxial cell	Thick walled seamless steel for high pressure resistance

Frequently Asked Questions (FAQ)

Q1: What is the primary working principle of the rock permeability tester? A: It is based on Darcy's Law, calculating permeability by measuring the steady-state flow rate of fluid through a sample under a constant pressure gradient.

Q2: Which international standards are compatible with this equipment? A: The system strictly follows international standards including ASTM D4525 and ISO 17313 for rock and soil testing.

Q3: What specimen sizes can be tested with the standard setup? A: Standard sizes include Φ50mm×100mm and Φ25mm×100mm. Other customized sizes can be selected based on specific project requirements.

Q4: How accurate is the test force measurement? A: The equipment features a Level 1 accuracy class with an indication error within ±0.5% and high-resolution tracking throughout the test.

Q5: Can the data be monitored in real-time during the test? A: Yes, the permeability coefficient acquisition instrument provides automatic data collection and real-time display of flow and pressure parameters.

Q6: What is the maximum pressure capacity for the triaxial cell? A: The triaxial cell is constructed from thick-walled seamless steel, capable of handling surrounding pressures up to 20MPa and permeation pressures up to 60MPa.