A detection method of a time-lapse compactness detection system for composite slurry rockfill materials

Abstract

The invention provides a time-lapse compactness detection system for a composite slurry rockfill material, and the system comprises a plurality of detectors, a plurality of hammering focuses, and an engineering seismograph, wherein the plurality of hammering focuses are uniformly arranged, and are arranged to be intersected with the detector array. The detectors are connected with the engineeringseismograph. Two sides of each detector are provided with the hammering focuses. The hammering focuses are used for exciting the seismic waves, and the detectors detect the seismic wave signals and transmit the seismic wave signals to the engineering seismograph. The engineering seismograph obtains seismic wave record in the composite slurry rockfill material, and obtains the speed of a surface wave through data analysis, thereby obtaining the compactness of the composite slurry rockfill material through conversion. The system is high in detection efficiency, and does not need to damage the structure of a detection point. The system employs a time-lapse collection design, performs the detection in different time periods at the initial setting stage of the strength of the rockfill materialafter slurry pouring, obtains a dynamic surface wave speed distribution map, and achieves the more visual evaluation of the compactness of the composite slurry.

Description

technical field [0001] The invention relates to the technical field of engineering geophysical exploration, and more specifically, to a detection method for a time-lapse compactness detection system of composite slurry rockfill materials. Background technique [0002] Composite slurry rockfill material is a new type of dam building material. Its characteristics of easy flow and later hardening can fill part of the pores of rockfill body, so as to reduce the porosity of rockfill body and increase the density of rockfill body. The uniformity and compactness of the composite grout rockfill material after pre-rolling and post-grouting are the focus of the design and construction units. Since this is a new type of dam material, it is necessary to study the detection method for this material. [0003] The existing testing method for the compactness of composite slurry rockfill materials is the test pit method, which has the following disadvantages: [0004] 1. The collection effi...

AI Technical Summary

Problems solved by technology

[0004] 1. Low collection efficiency

It is necessary to dig pits point by point during on-site collection. After the rockfill material is injected into the composite slurry, the cohesion between the rockfill particles is greatly increased, and the digging efficiency is extremely low.

[0005] 2. Only one point can be measured at a time, which cannot reflect the changes in the density of rockfill materials in the entire work area

[0006] 3. The traditional test pit method is a destructive detection method, which needs to destroy the structure of the detected point and cannot be restored

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