Coarse grained soil vertical permeability deformation instrument (slope type)

Thank you for using our company's products. In order for you to use them correctlyCoarse grained soil vertical permeability deformation instrument (slope type)Please read this manual carefully(To avoid installation,Causing unnecessary losses to you during use)This product is suitable for universities, colleges, laboratories, and maintenance units.

1、 Scope of use

1、Coarse grained soil vertical permeability deformation instrument (slope type)The purpose of the experiment is to determine the permeability coefficient of coarse-grained soil and the critical slope at which fine particles gradually lose with seepage water passing through the sample(piping)The failure slope during the overall floating of the soil mass(Flowing soil).

2This experiment is applicable to disturbed coarse-grained soil samples and undisturbed coarse-grained soil samples.

3The product complies withSL237-056-1999Standard. Easy to operate, high precision, and intuitive interface.

IICoarse grained soil vertical permeability deformation instrument (slope type)Main technical parameters

1Test cylinder specifications:middle300mm*600mm

2Test cylinder height:600mm

3Water level height:3000mm

4Distance between pressure measuring holes:250mm

5Loading equipment:Leverage pressure(0~50kpa)

6Water supply bucket:140*140*140mm

7Water storage tank:400*230*430mm

8Voltage:AC220V

9External dimensions:1500X700X2000mm10Equipment weight:200kg

11If conducting critical slope and failure slope tests, a high water level device needs to be selected.(Specific height root

According to the actual situation of the customer)

3、 Structural schematic diagram of coarse-grained soil vertical permeability deformation instrument (slope type)

Loading device Water level lifting device

Seepage hole

Upper permeable plate touch screen

Test bucket indicator light

pressure tap power switch

Lower permeable plate

Oblique permeable plate water level gauge

vent hole

Observe the container water inlet

drain outlet

drain outlet

4、 Operation steps of vertical penetration deformation instrument

The vertical permeability deformation instrument includes a test bucket, a loading device, a base, a permeable plate, and a bracket. The inner diameter of the instrument barrel is30cmThe height of the instrument is the diameter2Twice. Permeable plates are divided into upper permeable plates and lower permeable plates, with the upper permeable plate also serving to transfer loads. The aperture of the permeable plate is3、5The7mm(Under the lower permeable plate, an inclined permeable plate with exhaust holes at the upper end can also be installed)The bottom is a transparent organic glass container.

1Remove the test bucket and place it into the instrument's built-in container first10mmUnderneath the permeable board and lay it in the middle5The filter screen(bring your own)To prevent the loss of fine materials. Apply a circle of oil or rubber putty along the contact gap between the instrument wall and the filter screen. Open all test holes and place them in the exhaust state.

2After weighing the sample according to the standard equipment, in order to reduce the separation of coarse and fine particles and ensure the quality of the sample1%~2%The moisture,Mix evenly before loading the sample,The well proportioned sample is evenly layered and loaded into the instrument using a compaction hammer(For weathered rock debris or easily broken soil materials, vibration densification method can be used)Strike hard. Total thickness of the sample to achieve the required density:Sand soil not less than10cm;Fine gravel not less than15cm;Medium coarse gravel