Cutter spacing is one of the key factors affecting the rock breaking efficiency of Tunnel
Boring Machine (TBM). In the excavation of deep soft rock tunnels, the water content can …

The initial stress is a crucial factor influencing the selection of cutter spacing and rock
fragmentation efficiency in tunnel boring machine (TBM) operations. This study aims to …

颗粒材料在自然界和工程领域普遍存在, 外载荷作用下颗粒可能发生破碎现象.
颗粒材料的破碎行为会引起其物理力学性质的变化, 给工程和建筑建设带来极大影响. 研究宏 …

To improve the hard rock cuttability of disc tool and decrease its wear rate, a method of rock
fragmentation with the help of the prefabricated kerf formed by external waterjet is proposed …

To investigate the asymmetric failure mechanism and failure mode of layered rock tunnels, a
novel mixed-mode power exponent cohesive zone model (M-PECZM) is proposed in this …

Studying the damage evolution law of rock with directional bedding structure during the
rolling cutter rock-breaking process under high confining pressure is of great significance …

Identifying the thermal effects on the tension softening curve is of great significance for
understanding the fracture characteristics of rock specimens after thermal treatments and …

This paper presents the application of the hydraulic fracturing method in Romania,
exemplified by three case studies. In the current conditions in which the oil and gas prices …

A helmet, usually comprised of a composite shell, a foam liner and a chin strap, plays an
important role for human head protection. Windshield glazing is a sandwiched structure …

Granular materials exist widely in nature and engineering fields. Particles may break under
external loads. The breakage behavior of granular materials will cause changes in their …