Blasting vibration speed amplitude and direction correction method

Abstract

The invention discloses a blasting vibration speed amplitude and direction correction method, and belongs to the technical field of blasting vibration speed correction in blasting construction. The technical key points comprise: selecting at least two monitoring points as sensor positioning points at proper positions of an earth surface plane by taking a blasting area as a center, and mounting twosingle-component speed sensors of which the axes are vertical to each other on one positioning point; and then, installing two single-component speed sensors of which the axes are perpendicular to each other on the other positioning point under the measurement and control of the positioning device, so that the axes of the speed sensors of the two positioning points are consistent. Beneficial effects are as follows. According to the method, the vibration amplitude and the vibration direction can be accurately known and predicted, meanwhile, the plane position of a point where blasting occurs can be determined, blasting implementation is controlled according to different protected structure characteristics, blasting design and blasting construction are guided, and the safety of facilities and personnel around a blasting area and normal production are effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of blasting vibration velocity correction in blasting construction, and in particular relates to a method for correcting the amplitude and direction of blasting vibration velocity. Background technique [0002] In the construction of civil engineering, the excavation of rock and soil is a necessary link. The excavation of hard rock or soil layer is generally carried out by blasting construction. The vibration caused by blasting construction is harmful to the surrounding buildings. Therefore, the blasting construction Vibration codes or standards require the determination of the magnitude of the blast vibration velocity. At present, sensors arranged at fixed positions are usually used to measure two mutually perpendicular horizontal vibration velocity amplitudes. However, since the arrangement angle and position of the sensors arranged at fixed points The point position also changes. At this time, the amplit...

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Problems solved by technology

At present, sensors arranged at fixed positions are usually used to measure two mutually perpendicular horizontal vibration velocity amplitudes. However, since the arrangement angle and position of the sensors arranged at fixed points The point position also changes. At this time, the amplitude and direction of the measured vibration velocity are only consistent with the axis direction of the installed sensor, rather than the amplitude and angle of the horizontal vibration velocity pointing to the blasting point. The measurement results cannot correctly reflect Hazards of blasting to surrounding buildings

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