China Communications Construction Company (China)

Analysis of construction response for mechanized construction of metro connecting passages

To investigate the influence of mechanized pipe jacking construction for connecting passages in weathered granite strata on the settlement and deformation of left and right shield sections of metro tunnels and ground surface, this paper takes the pipe jacking project of No.1 conn...

Tunnel face extraction method for drill-and-blast tunnels considering occlusion and blur degradation

Reliable extraction of tunnel-face regions is essential for image-based rock-mass interpretation and intelligent construction control in drill-and-blast tunnels. However, field images are often degraded by machinery and worker occlusions, invalid backgrounds, uneven illumination,...

Evaluating the Precision of 3D Morphological Reconstruction for Asphalt Pavement Textures via Close-Range Photogrammetry

Accurate 3D reconstruction of pavement textures is vital for assessing surface performance. This study systematically evaluates the factors influencing the precision of close-range photogrammetry for pavement texture characterization. Four typical mixtures, AC-13, AC-16, SMA-16,...

Evidence-theoretic multi-sensor fusion with spatial semantic coupling for real-time hazard assessment in dynamic construction environments

Construction sites are characterized by heterogeneous, dynamically evolving hazard sources whose spatial interactions remain poorly captured by existing monitoring approaches. Two longstanding obstacles are the unreliable combination of conflicting evidence from multi-modal senso...

The Water-Sediment Regulation Scheme Drives Phytoplankton Dynamics in the Yellow River Estuary

The Water-Sediment Regulation Scheme (WSRS) of the Yellow River is a large-scale anthropogenic intervention designed to alleviate downstream channel siltation, yet its long-term ecological effects on estuarine phytoplankton communities remain contentious. Based on a 12-year (2011...

Characterizing the Interaction Mechanism between Asphalt and Mineral Filler in Asphalt Mastics of Mastic Asphalt Concrete Using Rheological Analysis, Hirsch Model, and 3D DEM

Abstract Asphalt binder and mineral filler are key components that significantly affect the properties of mastic asphalt (MA) mixtures. Asphalt mastic, formed by mixing mineral filler and asphalt binder, offers an effective way to study their roles within the MA system. This stud...

EFKG: An Efficient and Fine-Grained Access Control Encrypted Knowledge Graph

As knowledge graphs are increasingly applied in sensitive domains such as healthcare, ensuring data confidentiality and fine-grained access control over outsourced graph data has become critical. In this paper, we propose EFKG, an Efficient and Fine-grained Access Control Encrypt...