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2 days ago · This study investigates the pull-out characteristics of rock bolts with “natural” fractures induced by coupled dynamic-static load, which is imperative for assessing the stability of engineering structures and averting engineering disasters. “Natural” fractures under dynamic-static coupled load were simulated using a biaxial compression model and a SHPB model utilizing the PFC2D software. These coupling fractures were then incorporated into the bolt pull-out model after extraction ...
20 hours ago · Chimney Rock is a historic, iconic landmark for western North Carolina,” O’Leary said. The reality of a prolonged recovery is still sinking in for Chimney Rock residents, he said.
4 days ago · AA. Follow us. Dwayne “The Rock” Johnson looks back at his early WWE career, discussing his transformation from a generic babyface to an electrifying superstar. Initially failing to connect ...
5 days ago · The image was acquired on Sept. 13, 2024. In an unexpected find, NASA’s Perseverance rover has stumbled upon a black-and-white striped rock on Mars, dubbed 'Freya Castle', which has generated widespread excitement both within the scientific community and among space enthusiasts online. The unusual rock, measuring around 20 cm across, was ...
4 days ago · The Ajanta Caves are 30 rock-cut Buddhist cave monuments dating from the second century BCE to about 480 CE in Aurangabad district of Maharashtra state in India. [1][2][3] Ajanta Caves are a UNESCO World Heritage Site. [2]
7 hours ago · Photo: Amir Cohen/Reuters. Iran launched a barrage of about 200 missiles at Israel that were mostly shot down or missed their targets, escalating a Middle East conflict that now depends on whether ...
2 days ago · Earth - Core, Crust, Mantle: Earth’s outermost, rigid, rocky layer is called the crust. It is composed of low-density, easily melted rocks; the continental crust is predominantly granitic rock (see granite), while composition of the oceanic crust corresponds mainly to that of basalt and gabbro.
