Real-time lithology identification while drilling based on drill cuttings image analysis with ensemble learning
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao
发布时间：2026-03-18
关键词：Realtime lithology identification while drilling based on drill cuttings image analysis with ensemble learning
摘要：AbstractAccurate lithology identification through geological exploration is crucial for hazard risk management during deep underground operations. Artificial intelligence has advanced in image recognition but using it to analyze underground drill cuttings for accurate lithology remains challenging. Issues include imprecise sampling control, harsh environments, and inconsistent image acquisition...
阅读全文 PDF 引用Exploring wave propagation behaviors in rock: A grain-based perspective on mineral structures
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou
发布时间：2026-03-18
关键词：Exploring wave propagation behaviors in rock A grainbased perspective on mineral structures
摘要：AbstractRock, composed of diverse minerals, exhibits macroscopic mechanical properties largely determined by its grain-scale structure, making microscale studies crucial for understanding rock dynamic behavior. This study employs a grain-based model (GBM) within the discrete element method framework, calibrated using Lac du Bonnet granite test results, to investigate wave propagation and attenu...
阅读全文 PDF 引用Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling
Quan Xiao, Guofei Xiang, Liang Liao, Lai Wei, Hongli Wang, Songyi Dian
发布时间：2026-03-18
关键词：Motion planning and control of an installation robot for attitude adjustment arc parts in underground shield tunneling
摘要：AbstractThe traditional assembly process of arc parts (box-shaped pieces) in shield tunneling faces significant challenges, including outdated assembly techniques, low assembly precision, and slow construction progress. This study introduces a walk-through assembling robot for arc parts (W-ARa), inspired by the crawling behavior of spiders. W-ARa consists of eight legs, 19 hydraulic cylinders, ...
阅读全文 PDF 引用Critical expansion points: Mechanical signs of surrounding rock instability
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu
发布时间：2026-03-18
关键词：Critical expansion points Mechanical signs of surrounding rock instability
摘要：AbstractThe stability of surrounding rock in deep underground engineering is often affected by the post-peak zone, where damage characteristics remain insufficiently understood. A thorough investigation into post-peak rock behavior is essential for accurately characterizing the bearing capacity of deep surrounding rock. This study examines the mechanical behavior of surrounding rock in deep-bur...
阅读全文 PDF 引用The damage and failure mechanism of prestatically loaded rock during medium-strain rate cyclic impact loading
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun
发布时间：2026-03-18
关键词：The damage and failure mechanism of prestatically loaded rock during mediumstrain rate cyclic impact loading
摘要：AbstractTo study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series of tests were carried out. First, the rock was preloaded with a static load (27.5, 32.5, 37.5, 42.5 MPa), and then cyclic impact loads with different peak values (6, 8, 10, 12 MPa) and different frequencies (0.5, 1.0, 1.5, 2.0 Hz) were continuously applied ...
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