Measurement method of vibration speed at specific position in surrounding rock

A technology of specific position and vibration velocity, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problem of measuring vibration velocity only on the surface, unable to obtain the vibration velocity of a specific position inside the surrounding rock, etc. Simple operation and layout

Inactive Publication Date: 2015-07-29
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] The invention provides a method for measuring the vibration velocity at a specific position inside the surrounding rock in the field of geotechnical engineering, especially a method for measuring the vibration velocity at a specific position inside the surroundi

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  • Measurement method of vibration speed at specific position in surrounding rock
  • Measurement method of vibration speed at specific position in surrounding rock
  • Measurement method of vibration speed at specific position in surrounding rock

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Embodiment Construction

[0033] A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings. Taking the monitoring of tunnel blasting vibration in the Taiyan section of Qingdao Metro Phase I Project (Line 3) as an example, measuring holes are arranged on the surface at a vertical distance of 15.8m and a horizontal distance of 25m from the blasting center of the tunnel excavation face, and three different depth measurements are taken. point vibration velocity. The data acquisition device uses a blasting vibrometer model TC-4850. The sensor selection is the TCS-B3 waterproof three-vector (three-dimensional) speed sensor that is standard with the TC-4850 blasting vibration meter. The sensor is a cube structure with data lines, and its size is 64mm×64mm×64mm. according to figure 1 The specific operation shown is as follows:

[0034] The first step, at the measurement site, use a down-the-hole drilling rig of model KT15, and use a drill...

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Abstract

The invention discloses a measurement method of vibration speed at specific position in surrounding rock. The method relates to a measuring hole (1), wherein cementing materials (2) are poured at the bottom of the measuring hole (1); a sensor (C1) is closely connected with the cementing material (2); a boundary layer (5) is arranged between adjacent gel materials (2) to avoid the upper and lower layers of gel materials from being cured integrally; a data line (3-1) is connected with the sensor (C1), then is led out of the measuring hole (1) and is arranged in a locking notch device (6); the data line (3-1) is connected with a data acqusition device to measure the vibration speed. The invention also discloses a specific measurement method used for measuring the vibration speed at the specific position in the surrounding rock. The method has the advantage that the problem that the related data of the vibration speed at the specific position in the surrounding rock cannot be acquired in geotechnical engineering work, particularly underground engineering blasting work, so that a beneficial value is provided for evaluating influence degree of the geotechnical engineering work on underground pipelines and facilities.

Description

technical field [0001] The invention relates to a method for measuring vibration velocity at a specific position inside surrounding rock, and relates to the field of geotechnical engineering, in particular to the field of underground engineering blasting. Background technique [0002] The method of monitoring blasting vibration parameters in the engineering field is to use a sensor that matches the data acquisition device to collect the vibration signal generated by the blasting, the device host analyzes and stores the signal, calculates the amplitude and other information generated by the blasting vibration, and then The data is imported into the computer and analyzed with professional analysis software to obtain the blasting vibration parameters at specific locations. Blasting vibration parameters include vibration frequency, vibration velocity and vibration acceleration. [0003] At present, in geotechnical engineering, the measurement of blasting vibration velocity is l...

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Application Information

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IPC IPC(8): G01H17/00
Inventor 王海亮张海涛马鹤韦守朋孟祥坤程富起刘军辉
Owner SHANDONG UNIV OF SCI & TECH
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