Through analysis,the soft soil creep is the main reason,breakdown of rigid joint is caused by minute sagging and displacement between bend buttress pier foundation and back soil under long-run loading.

In order to describe the whole process of rock creep and the creep feature of rock subjected to water pressure and external force more exactly,the Burgers model describing the creep feature of rock was modified.

Based on viscoelastic mechanical analysis of the stability of surrounding rock in circular tunnel, through the improvement to viscoelastic constrictive model, this paper cites a logarithmic function to describe the constrictive model of rock creep.

On the basis of studying the relation of the load applied on the rocks with different water contents and electromagnetic radiation spectrum, and the relation of the rock electromagnetic radiation effect and regularity during the procedures from the beginning of rock creep distortion to failure, the electromagnetic radiation message characteristics of rock creep break are obtained.

Numerical simulation of mudstone creep under high pressure water flooding: A case study from SⅠmudstone in anticline structure in northern Lamadian Oilfield

Combining the maintenance principle of pressure relief and support,the principle of pressure–relief support is interpreted with the consideration of wall rock creeping and pressure relief.

Combining the maintenance principle of pressure relief and timbering, it has stated the principle of the support pattern of wall rock creeping and pressure relief.