Cave collapses emerge during the process of oil reservoir development, seriously affecting oil production. To reveal the collapse and failure mechanism of the carbonate cavern with a buried depth of 5600 m in Tahe Oil Field, using a self-developed ultra-high pressure model test system with the intelligent numerical control function, the model simulation material of carbonate rocks developed to ...

The global energy shortage has revived the interest in hydroelectric power, but extreme geological condition always pose challenges to the construction of hydroelectric power stations with large underground caverns. To solve the problem of safe design of large underground caverns, a Chinese-style intelligent stability design, representing recent developments in Chinese techniques for the constr...

With the increase of depth underground engineering, phenomenon splitting failure deep rock will appear, which is very different from shallow cavern. In order to reveal formation mechanism failure, mechanical model test and numerical simulations were carried out respectively. Using Pubugou Hydropower Station as engineering background, a three-dimensional (3D) geomechanical was conducted relying ...

Rock burst is one of the disaster accidents that can easily happen in rock cavern engineering. At present, most commonly used methods to control borehole pressure relief technology. In this paper, influence drilling layout schemes on effect surrounding mass systematically studied. The research results show strength reduction degree, AE evolution characteristics, failure modes samples with diffe...

Underground caverns of hydropower project have significant mechanical properties high stress, sidewall, large span, complex geological conditions and mutual disturbance adjacent cavern construction, resulting in very deformation rupture characteristics. Through the laboratory triaxial compression experiments, response failure mechanism granite is explored, elastic-brittle are also revealed. Wit...

The left bank of the cushion pond Baihetan hydropower station is a slant and dip slope. gently inclined intra-layer fault zones, steep-dip faults unloading fissures cutting slope to form several potentially unstable blocks. computational results show that stabilities blocks are controlled by zones. A method treatment applying deep replacement caverns load-reduction excavation was proposed reinf...