Coarse-Grained Soil Vertical Permeability Deformation Testing Machine

Product introduction

The STBX-30 coarse-grained soil vertical permeability deformation tester is suitable for measuring the vertical permeability coefficient of the sample and the critical slope (piping) of fine particles gradually lost along with the seepage when the coarse-grained soil passes through the seepage water, and the damage slope (fluid soil) when the whole soil floats. It is developed according to the requirements of SL237-056-1999 "Permeability and permeability deformation test of coarse granular soil", and conforms to DL/T5356-2006 "Test Rules of coarse granular soil for hydropower and water conservancy projects". The permeameter is suitable for coarse coarse soil samples of disturbed and undisturbed soil samples. The maximum applicable particle size is 60mm and the relative test sample size is Φ300×600mm. The osmotic water pressure is 5 meters water column height. The equipment comprises a main machine, a loading frame, a piston rod, a height gauge, etc.

Principle of instrument

The sample container of the equipment is a metal cylinder type. The upper and lower sides of the cylinder are equipped with metal porous permeable plates, the bottom of the sample is flooded, and the side of the water head pressure measuring switch and exhaust tee are connected with the water level measuring bar. Two water level measuring switches at different heights on the middle side of the sample are connected with the corresponding water level measuring pipes. The top of the sample is provided with an overflow port for measuring the seepage flow rate, and the overflow pressure is measured by the measuring pipes at the top.

In the 0 ~ 50KPa head penetration test, the head pressure can be changed by adjusting the height of the bucket with the winch.

Sample size: φ300x600mm

Maximum vertical load: 50KN

Vertical load application: Jack (manual loading)

Height measuring range: 0-100mm

Number of height gauges: 1

Resolution: 0.02mm

Safety area: 2㎡

Water or not: Yes