Table of Contents Author Guidelines Submit a Manuscript
Journal of Chemistry
Volume 2015 (2015), Article ID 642810, 9 pages
http://dx.doi.org/10.1155/2015/642810
Research Article

Analysis of the Blasting Compaction on Gravel Soil

1The Department of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
2The Department of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY 10027, USA
3Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5001, Australia
4School of Natural and Built Environments, University of South Australia, Adelaide, SA 5095, Australia

Received 28 August 2014; Accepted 20 September 2014

Academic Editor: Tifeng Jiao

Copyright © 2015 Qingwen Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The settlement control is critical for the safety of road based on high filled embankment. The traditional construction methods have the characteristic with less soil thickness compacted at a time. There are many advantages to compact the gravel soil with blasting. The cavity in soil is formed by blasting and its fillings to form a composite foundation for the embankment. The field data show this composite foundation can meet the requirement of loading and settlement control with less construction time. In geotechnical blasting, the high temperature due to blasting will swell the material around, so its worthy to do the coupled analysis with thermal mechanics (TM) and blasting compaction in the high filled embankment. In this paper, a 3D model is built with FLAC3D to simulate a single hole to predict the range and degree of thermal propagation. Then, the thermal strains got from the model are used to estimate the displacement of surrounding soil to predict the degree of compaction and optimize the distribution of blast holes in plan.