Design Manual for excavation support using deep mixing technology





1.1 PURPOSE AND SCOPE

CHAPTER 1

INTRODUCTION

The main goal of this manual is to develop state–of–the–practice guidelines for the design of excavation support systems using deep mixing technology in alternative or in conjunction with traditional techniques. The purpose of this manual is to facilitate the implementation of deep mixing (DM) technology into American excavation support design and construction practices, and answer deep mixing technology design questions.


1.2 APPLICATIONS AND LIMITATIONS

This design manual is intended to emphasize the principles for design of excavation support using deep mixing technology. Current state–of–the–practice case histories are also presented. This manual is not intended to be an all inclusive, prescriptive set of rules for deep mixing design. Its aim is to provide the engineer with background information and recommendations to confidently design DM excavation support walls.

1.3 TYPES OF EXCAVATION SUPPORT A variety of excavation support methods are currently used in practice. The prevalence of one shoring system over the others in a certain region depends on several factors including: local experience, site conditions, availability and cost of materials and the amount of shoring required for the project. The advantages and limitations of common types of excavation support were complied based on general knowledge and consultant input (Table 1 – 1).


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