57 Result(s)

Article

Heating and Water Transport Behavior of Sandstones Under Microwave Irradiation

Microwave treatment has become a promising method to improve the efficiency of mechanical excavators in hard rocks. This paper conducted microwave irradiation tests on three water-bearing sandstones and analyz...

Qinhua Zhao, Yanlong Zheng, Jianchun Li, ** Che… in Rock Mechanics and Rock Engineering (2024)

Article

Organic Carbon Deposition on the Inner Shelf of the East China Sea Constrained by Sea Level and Climatic Changes Since the Last Deglaciation

The East China Sea (ECS), which is located in the transitional zone between land and ocean, is the main site for the burial of sedimentary organic carbon. Despite good constraints of the modern source to the s...

Mingyu Zhang, **ting Liu, Fangjian Xu, Anchun Li… in Journal of Ocean University of China (2023)

Article

Assessing the Size Effect on Microwave Fracturing of Diorite Using a Dielectric-Loaded Converging Waveguide Antenna

Microwave fracturing and assisted mechanical breakage of rocks has been demonstrated to be efficient and cost-effective, holding great potential in rock excavation. However, the size effect on the fracturing p...

Zhongjun Ma, Yanlong Zheng, Mingzhong Gao… in Rock Mechanics and Rock Engineering (2023)

Article

Simulation of China’s potential rice yields by coupling land system evolution and climate change

Land systems and climate, which are the key elements of agricultural production and key drivers of crop yields, affect the quality of arable land. However, a quantitative model to reveal the mechanism of how p...

Manchun Li, Cong Du, Penghui Jiang, Wenbo Luan… in Science China Earth Sciences (2023)

Article

2D and 3D evaluation of joint roughness exposed by rock cores

Since rock joint surfaces are not universally exposed in engineering practice, these surfaces usually cannot be easily obtained or observed. However, it is more convenient to obtain a part of these joints by d...

Chunjiang Zou, **g Li, Yun Wu, Yan Yatao… in Bulletin of Engineering Geology and the En… (2023)

Article

Evolution of Asian drying since 30 Ma revealed by clay minerals record in the West Pacific and its tectonic-climatic forcing

As the second largest dust source on the globe, the tectonic and climatic evolution of continental Asia has an important impact on regional and global climate change. The West Pacific is the main sediment sink...

Yi Tang, Shiming Wan, Debo Zhao, Zhaojie Yu, Zhaokai Xu… in Science China Earth Sciences (2023)

Article

Dynamic Strength and Indentation Hardness of a Hard Rock Treated by Microwave and the Influence on Excavation Rate

Mechanical excavation in hard or very hard rocks is still challenging in rock engineering. One plausible solution is to reduce rock strength prior to mechanical excavation to increase excavation and cost-effic...

Chunjiang Zou, **n Quan, Zhongjun Ma, Yanlong Zheng… in Rock Mechanics and Rock Engineering (2023)

Article

Transverse Cracking of Rock with a Dissimilar Inclusion Under Tension: Effect of Loading Rate and Inclusion Diameter

The rate-dependent tensile failure of rock with a cement inclusion was experimentally and numerically investigated to reveal the coupled dynamic response of inclusion-containing heterogeneous rock structures. ...

Minghe Ju, Jianchun Li, Jian Zhao in Rock Mechanics and Rock Engineering (2022)

Article

Heating-Dominated Fracturing of Granite by Open-Ended Microwave: Insights from Acoustic Emission Measurement

Microwave fracturing of hard rocks holds great promise in the civil, mining and tunnelling industries. The role of heating and cooling in the fracturing of rocks and when and where cracks initiate from and pro...

Yanlong Zheng, Zhongjun Ma, Qiuming Gong… in Rock Mechanics and Rock Engineering (2022)

Article

Feasibility of Artificial Materials in Simulating Rock Failure Based on Rate-Dependent Brittleness Indexes

With the development of 3D printing and computer numerical control machining techniques, extremely complicated models physically simulating the underground structures in rock engineering were conducted. Whethe...

Chunjiang Zou, Suo Yingying, Kai Liu, Yi Cheng… in Rock Mechanics and Rock Engineering (2022)

Article

Microwave-assisted hard rock breakage by impact hammers: heating, fracturing and mechanical breakage

Microwave fracturing has a great potential in assisting the breakage of hard rocks using impact hammers by inducing artificial cracks and downgrading the rock mass quality. In this article, the techno-economy ...

Zhongjun Ma, Yanlong Zheng, **aobao Zhao… in Bulletin of Engineering Geology and the En… (2022)

Article

Simulation and estimation of future precipitation changes in arid regions: a case study of **njiang, Northwest China

Precipitation is critical for maintaining the stability of an ecosystem, especially in arid regions. This study primarily focuses on climatic changes during present (from 1985 to 2005) and future (from 2040 to...

Haoyang Du, Chen Zhou, Haoqing Tang, **aolong **, Dengshuai Chen… in Climatic Change (2021)

Article

Response of local temperature variation to land cover and land use intensity changes in China over the last 30 years

In addition to land cover change (LCC), land use intensity change (LUIC) is another dominant pathway through which anthropogenic activities influence regional climate. Although the climatic effects of LCC have...

**aolong **, Penghui Jiang, Haoyang Du, Dengshuai Chen, Manchun Li in Climatic Change (2021)

Article

Changes in local climatic factors under different oasis-town configurations in an arid region: a case study of Hami Oasis

Investigating oasis effects of different oasis-town configurations is key to understanding the ecological stability of the oasis. However, previous studies have not considered the impacts of oasis–town configu...

Haoyang Du, Chen Zhou, Penghui Jiang, **aolong **, Shuying Chen… in Climatic Change (2020)

Article

Seasonal variations in the surficial sediment grain size in the East China Sea continental shelf and their implications for terrigenous sediment transport

This study discusses the seasonal variations in surficial sediment grain size and their implications for sediment transport driven by the hydrodynamics in the East China Sea, based on grain size analysis of su...

Kaidi Zhang, Anchun Li, ** Zhang, Jian Lu, Hongli Wang in Journal of Oceanography (2020)

Article

Improving and evaluating boundary algebra filling for identifying polygon intersections

Polygon intersection is important for data processing in geographic information systems. For large datasets, spatial indexing methods such as R-tree allow the identification of polygon intersections, but often...

Chen Zhou, Manchun Li in Earth Science Informatics (2019)

Article

A Novel Experimental Method to Investigate the Seismic Response of Rock Joints Under Obliquely Incident Wave

Yang Zou, Jianchun Li, Jian Zhao in Rock Mechanics and Rock Engineering (2019)

Article

Rainfall seasonality changes and its possible teleconnections with global climate events in China

Despite the importance of seasonal distribution and interannual variability of rainfall to the ecosystem and society, there is a lack of regional-level studies on rainfall seasonality, and teleconnections betw...

Shulin Deng, Ni Yang, Manchun Li, Liang Cheng, Zhenjie Chen… in Climate Dynamics (2019)

Article

Recent sedimentary records in the East China Sea inner shelf and their response to environmental change and human activities

The East China Sea continental shelf is a unique area for the study of land-sea interactions and paleoenvironmental change because it receives a large amount of terrestrial material inputs. In recent decades, ...

Kaidi Zhang 张凯棣, Anchun Li **安春, ** Zhang 张晋… in Journal of Oceanology and Limnology (2018)