负温下白垩系岩石的物理力学性能试验研究

 摘要：通过对常温（20℃）和负温（5℃~-15℃）下内蒙鄂尔多斯地区白垩系岩层的物理力学性能试验，获得了不同负温条件下岩石的单轴抗压强度、弹性模量、应力-应变关系曲线等力学性能，分析了单轴抗压强度与温度、含水率之间的相互影响关系，为内蒙鄂尔多斯地区白垩系地层的冻结法施工和井壁结构设计提供参考数据。

Experiment study on physical mechanics performances of Cretaceous System rock under minus temperature

AbstractThe uniaxial compression test for the cretaceous rock in Ordos Inner Mongolia was conducted under atmospheric temperature(20℃)and freezing temperatures (-5℃~-15℃) which obtained a series of physical mechanics parameters as followsuniaxial compressive strength, elastic modulus,and the stress-strain relationship.And the relation with uniaxial compressive strength and different freezing temperatures and different moisture content were analyzed clearly which provide helpful insights for the frozen construction and wellbore design. Key words: the cretaceous; freeze; mechanical test;uniaxial compressive strength;