Double-Packer Grouting Method
1. Double-Packer Grouting Method Double-Packer Grouting, also known as Marshall Pipe Grouting or Double-Ring Grouting, is a low-pressure injection technique that allows for repeated injection of different grout materials. It involves the installation of outer grouting pipes in the ground at regular intervals, typically equipped with check rubber sleeves (@33.3cm or @50cm). These pipes are