critical internal water pressure

Using fracture propagation engineering criterion, calculation formulae of critical internal water pressure of two kinds of failure model are obtained respectively; and its effect laws as fracture direction and lateral geo-stress coefficient are studied. Some following conclusions can be drawn:1.
應(yīng)用工程近似裂紋失穩(wěn)準(zhǔn)則,分別推導(dǎo)出兩種破壞模式的臨界水壓計算公式,并對其隨裂紋方向變化的規(guī)律進(jìn)行分析。