| 摘要 |
PURPOSE: A method for forming an underground bar using high-pressure grouting is provided to form an underground bar in a desired shape by surrounding the underground bar using a grout protection net. CONSTITUTION: A method for forming an underground bar using high-pressure grouting is as follows. The ground is bored using a boring machine, and a casing is installed in the borehole. A cylindrical grout protection net(11) is inserted into the casing to be expandable. One end of an injection pipe for injecting grout liquid is inserted into the center of the grout protection net, and the other end is connected to a grout cap. A high-pressure grout device is connected to an injection hose connected to the top end of the injection pipe through the grout cap. The grout cap covers the inlet of the casing, and the bottom of the borehole is grouted. The casing and the injection pipe are simultaneously drawn out of the borehole, and the borehole is gradually grouted. |
