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    Falling ball tester for geotechnical mechanical properties

    Device name
    Falling ball tester for geotechnical mechanical

    Related patents

    Patent No.: ZLA200510021852.X

    Patent name: Measurement technique for the shape characteristics of the contact time による site material



    Patent name: Field test method and device for mechanical properties of falling ball geomaterials

    Patent No: License No. 3492263


    Patent No.: ZL200810087044.7

    Patent name: Method for improving the accuracy of portable deflection meter (H-FWD) test using acceleration sensor



    Based on the Hertz impact theory and the Vesic cavity expansion theory, the technique can test the deformation modulus during compression and rebound, and then calculate the corresponding deformation index (material deformation modulus and strength index) of the rock mass material.



    Test principle and method


    Results and technical characteristics

    Test method for deformation characteristics of geomaterials based on Hertz impact theory;

    Test method for strength characteristics of geomaterials based on Vesic cavity expansion theory;

    It can quickly detect the on-site mechanical properties of a wide range of materials from soft clay, sand, gravel to cement stabilized soil and asphalt concrete, and has obvious advantages compared with the existing PFWD/EVD.


    product description


    Japan Railway System Standard Equipment; Sichuan Shengtuo Testing Technology Co., Ltd. provides falling ball type geotechnical characteristics detector. The equipment is developed for highway, railway, water conservancy, airport, bridge, construction and other engineering fields, and can be effectively applied to various stages of design and construction; the instrument provides rapid test methods according to the requirements of current regulations and for mechanical properties such as strength and deformation of materials. , effectively solve the problem of uneven deformation. It can quickly test the deformation modulus, strength index, foundation coefficient K30, CBR, deflection value, dry density, compaction degree and other indicators of geomaterials.












    Test items


    Test object: prestressed bridge anchor (rod)

    Test content: tunnel grouting compactness

    Falling ball type geotechnical property tester

    Corresponding parameter set not found, please add it in property template of background
    1 Provide database management services, and can be docked with BIM system, to achieve the visualization of test results model; with the database linkage, can carry out test results cloud AI (artificial intelligence) analysis.
    2 Deformation Index Testing Method: Based on Hertz Impact Theory
    3 operating system:windows
    4 Waveform noise processing: moving smoothing、BPF、EMD
    5 Signal Processing Technology: Integral Processing and Average Processing
    6 Channel number: 2 channels (VMC technology can be extended to multiple channels), trigger channels and receive channels are interchangeable
    7 Platform: Small Integration Platform                                                         
    8 Data acquisition: support touch, wireless dual mode; support single, continuous dual mode sampling
    9 working temperature:0~45℃
    10 Working hours: continuous working for more than 8 hours (battery can be replaced)
    11 Storage: This machine can store tens of thousands of data on its own hard disk to support expansion.
    12 Sampling accuracy: floating-point interpolation compensation to 24 bits
    13 Maximum acquisition frequency: 500KHz, adjustable                      
    14 Maximum acquisition points: 20,000, adjustable
    15 Maximum/Minimum Voltage Display:10V/0.0001V
    16 Display: LCD1280*800
    17 Result Data Statistical Processing: Equivalent Value Computation, Simple Average, Deviation and Elimination of Abnormal Data
    18 Graphic processing: contour mapping
    19 Deformation Index Testing Contents: Compression Modulus and Rebound Modulus
    20 Strength Index Testing Contents: Internal Friction Angle, Cohesion
    21 Testing method of strength index: based on Vesic void expansion theory
    22 Test contents of other conversion indexes: K30, CBR, deflection, dry density, compactness, etc.
    23 Maximum test depth:0.3m  
    24 Location information: supporting GPS positioning



    Instrument mainframe

    Drop ball







    Remote control pen


    Drop ball





    Tablet PC



    Ball drop handle


    Drop ball system



    Device name
    Geotechnical acoustic wave tester
    Device name
    Cross hole rock mass mechanical property
    Device name
    Falling ball tester for geotechnical mechanical
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