Analysis and Calculation of Grouting Pressure in Static Water Grouting and Reasonable Pressure Definition

摘要

Grouting pressure is one of the most important parameters in grouting engineering. The pressure selection is related to the effect and safety of the grouting engineering directly, thus it is very important to compute and confirm it. Grouting process is divided into filling grouting and compaction grouting through summarizing and analyzing the changing law of the grouting pressure to the project. On the premise of neglecting slurry cohesion and solid-liquid coupling, distribution law of grouting in two-dimensional structure is discussed. Function expression of filling grouting is derived by adopting two-dimensional plate structure model and applying energy method, and the parameter is analyzed; limit pressure formula in filling grouting is derived by elastic-plastic mechanics principle.