Continuous estimation method for compaction quality of soil and stone materials based on integrated acoustic detection technique

Abstract

The invention relates to a continuous estimation method for the compaction quality of soil and stone materials based on an integrated acoustic detection technique. The continuous estimation method comprises the following steps: measuring by virtue of a conventional point sampling detection method, so as to obtain a field test pit point testing result; establishing and selecting a proper soil and stone material compaction quality evaluation model; calculating the compaction quality of each grid on a current grinding construction operation surface; combining with a spatial interpolation method,so as to obtain the compaction quality of each site on current grinding construction operation full working surface; furthermore, carrying out analysis to determine whether a filling grinding construction region is a qualified region or an unqualified region according to a compaction quality control rule, and calculating the qualification rate of the compaction quality of a current grinding construction region; and timely carrying out feedback so as to guide field construction, and carrying out remedial measures, so as to control the construction quality. By utilizing the continuous estimationmethod, the filling quality of soil and stone materials for filling earth and stone projects can be simply, efficiently, continuously, accurately and comprehensively evaluated, so that the filling quality can be timely fed back and controlled.

Description

technical field [0001] The invention belongs to the technical field of earth-rock filling construction quality control, can be used for continuous evaluation of earth-rock filling quality, and particularly relates to a method for continuous evaluation of earth-rock compaction quality based on integrated acoustic wave detection technology. Background technique [0002] The evaluation of compaction quality during filling is one of the key links for the construction quality control of earth-rock works such as earth-rock dam projects, which has a decisive impact on the safe and stable operation of infrastructure. The compaction quality of filling materials such as soil, aggregate or asphalt mixtures is routinely assessed by sampling the density, moisture content, strength or modulus at certain discrete points on site. Sand filling method, calcium carbide method, direct heating method, nuclear density meter method and water irrigation method are the conventional detection methods...

AI Technical Summary

Problems solved by technology

Based on the integrated acoustic wave detection technology, the present invention conducts efficient, non-destructive, and continuous evaluation of the compaction quality of soil and stone materials on the whole working face. Acoustic signals emitted in the material are collected and the frequency spectrum of the signal is analyzed by the onboard computer, and then the continuous sound compaction index value (SCV, soundcompaction value) representing the compaction quality of soil and stone materials is obtained, and then based on the statistical regression analysis method Carry out correlation analysis between SCV and rolling construction parameters, and soil-rock compaction quality measured by conventional testing methods, and then establish and select a suitable relationship model between soil-rock compaction degree and continuous compaction index (SCV), and then combine spatial interpolation The method realizes the evaluation of the compaction quality of the whole working face during the filling construction process, which can effectively solve the existing earth-rock engineering filling quality evaluation techniques and methods, especially the low accuracy of the earth-rock dam filling quality evaluation. , low efficiency, inconvenient to use, complex interpretation of compaction state, obvious discreteness, large errors in the results, easy to be affected by filling material factors, regardless of the parameters of the rolling process and the properties of earth and rock filling materials Affect the one-sided evaluation of the compaction quality of filling materials, etc., and realize real-time, continuous, and full-face evaluation of the compaction quality of earth and stone materials used for earthwork engineering filling

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