致密砂岩气属于典型的非常规油气藏,储层具有低孔、低渗特征,有效砂岩储层薄且含气后与围岩的波阻抗差异小,地震响应弱。研究区成......

The authors investigate the failure modes surrounding over-stressed tunnels in rock. Three lines of investigation are em......

Using of an Auxetic Structure as Reinforcement of a Bending Reinforced Concrete Beam...