摘要: In Section 8.22, we showed that, for material stability, the lateral pressure in soil may have any value between maximum or passive p and minimum active a , actual depending on strains. The condition of zero strain is particular interest, since it closely approximates to state strata large extent, consolidating under uniform increase overburden. coefficient earth at rest (K 0) defined as ratio σ′ x /σ′ z this no strain.