In the development of deep underground engineering operations, the surrounding rock is
prone to large deformation, rockbursting, and other major engineering disasters. Pressure …

In order to control the large deformation of tunnel surrounding rock, a new energy-absorbing
bolt is developed. This bolt can be transformed into a rigid support when the deformation of …

Deep soft rock roadways are prone to large deformations and failure when reinforced with
traditional rockbolts owing to the stiffness mismatch between soft rocks and rockbolts. Thus …

There are many challenges in the process of underground engineering construction, such
as high stress, extremely soft rock, strong mining and other complex conditions. The …

Based on the shortcomings of traditional bolts in the process of supporting surrounding rock,
the structural composition and working principle of new bolts have been studied in detail …

Under the impact of seismic forces, the strain of conventional anchor cables tended to
increase sharply in an instant, which could easily cause the anchor cables to fail due to …

A simple empirical time-dependent chart of extension fracture initiation is described. The
chart was developed using simple borehole periscope observations within the rib pillars …

锚杆是地下工程硐室的主体支护方式, 为吸收围岩变形释放的能量, 控制围岩变形,
需要研发具有高恒阻力, 高延伸率和高预应力的吸能锚杆. 本文从吸能锚杆的研发历程 …

The dynamic failure mechanism of horizontally layered dangerous rock during earthquakes
is complex and only few studies have addressed the combination of particle flow code (PFC) …

This article presents the methodology and results of single shear tests of bolt rods under
dynamic impact loading generated by means of a drop hammer. Comparative analysis was …