Explanipedia

Multiple stress memory characteristic of rocks under uniaxial deflection loading: Insights from acoustic emission signals Open

Chunde Ma, Wenyuan Yang, Zelin Liu, Guanshuang Tan, Junjie Zhang · 2025

The acoustic emission (AE) method is commonly used to measure in-situ stress, while the Kaiser effect (KE) is usually affected by the stress history and specimen direction. In this study, three types of rocks were tested under uniaxial def…

Mechanical behavior of rock under uniaxial tension: Insights from energy storage and dissipation Open

Guanshuang Tan, Chunde Ma, Junjie Zhang, Wenyuan Yang, Guiyin Zhang , et al. · 2024

Materials science Geology Physics

Many rock engineering projects show that the growth of tensile cracks is often an important cause of engineering disasters, and the mechanical behavior of rocks is essentially the transmission, storage, dissipation and release of energy. T…

Effect of thermal treatment and moisture content on the mechanical properties of soft sandstone under triaxial extension: an experimental study Open

Zelin Liu, Chunde Ma, Xin’ao Wei · 2023

Materials science Geology

The problem of deformation damage of soft rocks and the effect of temperature and moisture content on the mechanical properties of rocks has received wide attention in recent decades. To investigate the effect of thermal treatment and mois…

Strength Characteristics and In Situ Stress Measurement of Rock Cores from a Large Section Underground Station: A Case Study Open

Diyuan Li, Aohui Zhou, Lichuan Wang, Yuda Chen, Chunde Ma · 2022

Geology Materials science Philosophy

Chongqing is a mountain city in western China with a complex geological environment, which brings many difficulties to the construction of large sections of underground projects. In order to avoid serious problems in the construction of Gu…

Development and Application of Gas Production Measurement System of Coal-Rock under Temperature–Pressure Coupling Open

Chunde Ma, Zihe Wang, Jiaqing Xu, Guanshuang Tan, Zhihai Lv , et al. · 2022

Environmental science Materials science Geology

In this study, a measurement system for gas generation of coal-rock under temperature–pressure coupling was developed by adding gas extraction, collection, and flow-monitoring devices to the original stainless-steel liquid seepage pipeline…

Mechanical Properties and In-situ Stress Measurement by Rock Core Samples Drilling from a Large Section Underground Station Open

Diyuan Li, Aohui Zhou, Lichuan Wang, Yuda Chen, Chunde Ma · 2022

Geology Engineering Business

Chongqing is a mountain city in western China, with complex geological environment, which brings many difficulties to the construction of large section underground projects. The construction experience of a large number of underground proj…

Core Orientation Technology Based on Drilling Trajectory Projection and Its Application in In Situ Stress Measurement of the Deepest Shaft in China Open

Chunde Ma, Guanshuang Tan, Xibing Li, Jiaqing Xu, Jiangzhan Chen · 2022

Geology Computer science Engineering

Deep borehole cores are an important material basis for understanding deep stress conditions and rockburst risk; however, the complex environment of deep boreholes poses many challenges to traditional core orientation techniques, thus limi…

Ae-Based Failure Warning Mechanism During Cemented Paste Backfilling: Experimental Investigation Open

Chunde Ma, Zihe Wang, Jiaqing Xu, Guanshuang Tan, Zhihai Lv · 2022

Materials science Environmental science Geology

To research the AE warning mechanism of cemented paste backfilling (CPB), the uniaxial compression test with AE monitoring was carried out on CPB. The effects of different moisture content, cement proportion, and loading rate on AE charact…

Evaluation of cathode quality and damage of aluminium electrolytic cell based on non-destructive technology Open

Yu Ting Luo, Sheng-xiang LI, Dao-long CHEN, Xiling Liu, Chunde Ma , et al. · 2021

Materials science Engineering Physics

To evaluate the quality and damage condition of the electrolyzer, wave velocity detection technology and impact echo technology were used to detect the cathode part of the electrolyzer. The experimental results show that wave velocity is l…

A New Flattened Cylinder Specimen for Direct Tensile Test of Rock Open

Qiuhua Rao, Zelin Liu, Chunde Ma, Wei Yi, Weibin Xie · 2021

Materials science Mathematics Philosophy

In recent decades, researchers have paid more attention to the indirect tensile test than to the direct tensile test (DTT) of rocks, mainly due to difficulties in the alignment and the stress concentration at the end of an intact cylindric…

Research on Supporting Method for High Stressed Soft Rock Roadway in Gentle Dipping Strata of Red Shale Open

Chunde Ma, Jiaqing Xu, Guanshuang Tan, Weibin Xie, Zhihai Lv · 2021

Geology Philosophy

Red shale is widely distributed among the deep mine areas of Kaiyang Phosphate Mine, which is the biggest underground phosphate mine of China. Because of the effect of various factors, such as high stress, ground water and so on, trackless…

Research and microscopic analysis of seepage characteristics of sandstone under low-frequency cyclic loading Open

Chunde Ma, Long Shan, Xibing Li, Zelin Liu, Weibin Xie · 2020

Geology Materials science Engineering

The change of rock permeability properties under cyclic load is of great significance to the safety of underground engineering. However, there are few studies on triaxial seepage tests under different cyclic loads, and most of them have no…

A New Technology for Smooth Blasting without Detonating Cord for Rock Tunnel Excavation Open

Chunde Ma, Weibin Xie, Zelin Liu, Qiyue Li, Jiaqing Xu , et al. · 2020

Engineering Chemistry

In this paper, the aim is to achieve safe, rapid excavation of an extra-long, large-cross-section highway tunnel in Eastern Tianshan, as well as to reduce production costs, simplify production processes, reduce cycle time, and improve prod…

Geological Core Ground Reorientation Technology Application on In Situ Stress Measurement of an Over‐Kilometer‐Deep Shaft Open

Chunde Ma, Xibing Li, Jiangzhan Chen, Yanan Zhou, Sen Gao · 2020

Geology Physics Philosophy

As mining progresses to depth, engineering activities face the extreme challenge of high in situ stress. To efficiently measure the deep in situ stress before engineering excavation, an innovative deep in situ stress measurement method cap…

Characterization of Storage Energy for Rocks Based on Acoustic Wave Velocity Measurement Open

Chunde Ma, Chunzhi Guo, Yanan Zhou, Zelin Liu, Shan Long · 2018

Geology Physics

To quantitatively characterize the stored energy in the rock.In the elastic range, the fluctuation characteristics and energy of marbles, granites, and red sandstones subjected to different stresses were studied, and the variation laws of …

Failure mechanism and coupled static-dynamic loading theory in deep hard rock mining: A review Open

Xibing Li, Fengqiang Gong, Ming Tao, Longjun Dong, Kun Du , et al. · 2017

Geology Engineering Materials science

Rock failure phenomena, such as rockburst, slabbing (or spalling) and zonal disintegration, related to deep underground excavation of hard rocks are frequently reported and pose a great threat to deep mining. Currently, the explanation for…

Research and Application of In-situ Measure Device on High-Efficiency Convergence Deformation for the Large Cross Section Roadway Open

Chunde Ma, Wei Fu, Sunxi Hu, Yesun Wang, Yanan Zhou · 2016

Computer science Geology Engineering

In consideration of the disadvantages of the traditional contact-type measure methods for deformation measurement in large section roadway, the in-situ measure method and tool is developed with the theory of laser-based distance measuring.…

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