Model: YSD-10 Rock Mass Direct Shear and Steel Pressure Plate Integrated Machine

Introduction to the applicable range and standard characteristics of deformation modulus in rock mass deformation test using rigid pressure plate method:Overview: Satisfying the SL264-2020 standard, it is suitable for on-site direct shear tests (in-situ rock, soil large-scale direct shear, in-situ slope large-scale shear, etc.), rigid pressure plate method rock deformation tests, and force, displacement, or deformation parameter tests. The on-site direct shear tester for rock mass is mainly used for shear testing of soil in the field. Usually, different normal (vertical) loads are applied to at least 3 rock mass samples in each group. After the normal load is stable, horizontal (tangential) shear forces are applied to cause the rock mass samples to fail on a determined shear plane. The shear stress of the sample failure is recorded. The on-site shear test can be conducted in test pits, test trenches, and test holes. This test adopts the stress controlled push method.

1、 Main technical parameters:

1. Normal ZUI high pressure: 500KN

Pressure plate ZUI high pressure: 500KN

2. Normal piston ZUI large stroke: 50mm

3. Horizontal ZUI large shear force: 500KN

4、 横向活塞工作行程： 50mm

5. Test piece size: straight cut 500 * 500 * 350mm (length * width) and pressure plate ⌀ 505mm

6. Normal ZUI large space: adjustable on-site

7. Horizontal ZUI Large Space: On site Mediation

8. Manual loading

9. Displacement measurement: 0-50mm (measurement accuracy: 0.01mm) Measurement resolution: 0.01mm

IIRock rigid pressure plate method for rock mass deformation test deformation modulusMain configuration:

1. 2 manual hydraulic pumps

2. 4 hydraulic pipelines

3. 2 pressure sensors

4. 1 piece of rigid pressure plate (⌀ 505mm * 70)

5. 1 meter normal pressure transmission column

6. 1 set of measuring bracket

7. 1 set of roller row

8. Cutting box 500 * 500 * 320 1 set

9. 1 set of normal reaction force device

10. 1 set of tangential reaction mechanism

11. 8 50mm displacement gauges (0.01mm)

12. Two bidirectional hydraulic cylinders (hydraulic jacks)

13. The tangential space needs to be determined by the customer based on the on-site environment.

3、 Sample preparation and installation

The thrust direction of the flat push method should be consistent with the engineering shear direction

The shear surface of the two specimens should be processed into a rectangle, with a side length not less than 50cm and a height not less than 2/3 of the ZUI small side length.

The spacing between the three specimens should be greater than 1.5 times the small side length of ZUI, and the surrounding rock surface should be chiseled flat.

Four pairs of rock masses with developed cracks and easy to be crushed require the pouring of reinforced concrete protective sleeves or steel molds. The protective cover should have sufficient strength and rigidity. A 2cm shear joint should be reserved between the bottom of the protective cover and the bedrock

When there is a special need, a protective layer should be reserved, protective measures should be taken, and a certain normal stress should be applied before sample preparation to avoid disturbing the rock mass due to stress release.

The top surface of the specimen or protective cover should be parallel to the predetermined shear plane

Characteristic advantages:

1. The high stiffness host is a door type frame type high stiffness structure. The working oil cylinder is placed in the middle of the upper crossbeam of the frame, with rails on both sides for easy installation and disassembly of the three-axis pressure chamber. A spherical pressure plate is installed in the middle of the crossbeam on the frame, which can be automatically adjusted to ensure close contact between the pressure plate and the end of the compression rod.

2. The pressure self balancing three-axis pressure chamber adopts pressure self balancing technology, so that the axial test force and the confining pressure do not interfere with each other and are independent of each other. Made of high-strength alloy structural steel, each pressure plate and pressure transmitting piston rod are made of bearing steel that has undergone heat treatment and precision machining. The pressure chamber is placed on a mobile trolley and can move along the track, making it easy to load and unload samples.

3. Turbocharger is an ultra high pressure oil source that amplifies the working oil of the system and outputs it. The ultra high pressure oil is supplied to the three-axis pressure chamber. As lateral pressure (i.e. confining pressure).

4. The servo hydraulic source is composed of three parts: a high-pressure plunger pump group, an overflow valve, a servo oil system, and a low-pressure gear pump, which form an oil filling system and a confining pressure boosting system.

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After sales service of Tianjin Metes Testing Machine Factory:

1. Logistics delivery

After the product is ordered, we will arrange to ship it for you as soon as possible. The logistics companies we cooperate with include: Aneng, Debon, Zhongtong, and Best (if you have any logistics companies that we can provide)

2. Warranty period

1. The warranty period for all products sold by our factory is one year (excluding malfunctions or damages caused by human factors or uncontrollable natural phenomena).

2. Users can consult technical issues through after-sales telephone and obtain clear solutions.

3. When users experience performance failures during normal use, our company promises the above warranty services. In addition, if there are clear provisions in the applicable laws and regulations of the country, our company will comply with the relevant laws and regulations.

4. During the warranty period, paid maintenance services will be provided for the following situations:;

(1) Damage caused by human or uncontrollable natural phenomena;

(2) Malfunctions or damages caused by improper operation;

(3) Malfunctions or damages that occur due to modifications, disassembly, or assembly of the product;

(4) Failure to return the 'After sales Service Commitment Letter' on this page within one month.

3. Return and exchange policy

We will provide you with complete after-sales service. Due to the high cost of instrument and equipment research and development, if the product itself has no quality problems, we do not accept returns or exchanges. If you have any other problems, please communicate and negotiate with your sales personnel in a timely manner, and we will try our best to solve them for you.

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