2022年11月1日 · In this paper, a fast mesh model for the subdivision of tunnel surrounding rock was proposed, followed by a detailed presentation of a corresponding blocks generation approach based on the element-assembling algorithm.

2024年7月16日 · Block collapse is one of the most common geological disasters that occurs during the construction of tunnels in blocky rock masses and is characterized by sudden events and severe damage, which seriously threatens the safety of tunnel construction.

2024年7月16日 · Based on the collapse accident of a block in Qingdao, the failure mechanism of a large-span tunnel with unstable blocks and the control effect of the length, prestress and spacing of pre-stressed rock bolts on the surrounding rock are studied through the model test and combination of numerical calculation, the on-site support optimization scheme...

2013年9月1日 · Block theory is powerful in terms of fast analyzing rock blocks around underground openings created by the intersection of the tunnel surface and joints in the rock mass.

2022年3月14日 · In this article, based on the cutting algorithm, a new method for block identification is proposed, which is suitable for tunnel engineering and can identify the blocks formed by finite discontinuities and excavation surfaces.

2024年2月25日 · After stress initialization, the tunnel is created by cutting the rigid blocks with fractures. The unbalanced forces on the cut blocks are computed, stored, and applied to the tunnel walls. These forces are subsequently relaxed to simulate tunnel advancement. Fragments are computed at various stages of relaxation.

2001年10月1日 · Abstract A three-dimensional statistical joint modeling technique was used to analyze the stability of rock blocks around a tunnel. The rock blocks generated from the joints and the tunnel were analyzed for their volume, height, perimeter, safety factor, and probability of …

2011年11月30日 · This paper presents the results of an investigation that was carried out using important parameters such as discontinuities in forming rock block and instability in tunnel. The discontinuities...

We present a two-stage algorithm to create high-fidelity geometric models of tunnel lining from Terrestrial Laser Scanning (TLS) point clouds. Tunnel geometry, defined at the detailed block entity level, is constructed through a data-driven block segmentation algorithm and a model-driven assembly technique.

2015年5月25日 · The main ideas of block theory are reviewed, as are their application to finding and describing key-blocks of tunnels, slopes and foundations. Both translational and rotational analysis are covered, the latter being a recent enlargement of block theory.