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Erosion and Sediment Production in Small Watershed in Purple Hilly Areas and prevention techniques

Wuhan University Journal of Natural Sciences 2003年第3B期8卷 1041-1046页

作者： Zhang Bao-hua, He Yu-rong, Zhou Hong-yi, Zhu BoInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China Department of Geography, Liaocheng University, Liaocheng 252059, Shandong, China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 SichuanChina Department of Geography Liaocheng UniversityLiaocheng 252059 Shandong China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 SichuanChina

Purple Soil distributes extensively and mainly in China. Because of abundant easily weatherable parent rocks/ materials and unstable soil structure, and also influenced by parent materials, usage systems, and slope gradients, erosion and sediment production of purple soils are very severe with main fashions of water erosion and gravitational erosion. Basing on observed data in small watersheds, rainfall erosivity, vegetation coverage, previous soil water content, flow and relating factors such as climate, topograph of small watershed, land usage, and soil kinds are all the influence factors of erosion and erodibility of purple soil as well as sediment production and transport in small watershed of purple hilly areas. The effective technological countermeasures of ecosystem restoration, agricultural tillage for water conservation and erosion prevention, agriculture project, and soil changing for fertility and anti-erosion were provided.

关键词： purple soil characteristics of erosion and sediment production) influence factors prevention techniques

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Study on the Safety and prevention Technology of Coal Mining under the River in Xingyuan Coal Mine

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Open Journal of Geology 2024年第3期14卷 339-402页

作者： Abdoulaye Sylla Wenbing Guo School of Energy Science and Engineering Henan Polytechnic University Jiaozuo China

Coal mining-induced surface subsidence poses significant ecological and infrastructural challenges, necessitating a comprehensive study to ensure safe mining practices, particularly in underwater conditions. This project aims to address the extensive impact of coal mining on the environment, infrastructure, and overall safety, focusing on the Shigong River area above the working face. The study employs qualitative and quantitative analyses, along with on-site engineering measurements, to gather data on crucial parameters such as coal seam characteristics, roof rock lithology, thickness, water resistance, and structural damage degree. The research encompasses a multidisciplinary approach, involving mining, geology, hydrogeology, geophysical exploration, rock mechanics, mine surveying, and computational mathematics. The importance of effective safety measures and prevention techniques is emphasized, laying the foundation for research focused on the Xingyun coal mine. The brief concludes by highlighting the potential economic and social benefits of this project and its contribution to valuable experience for future subsea coal mining.

关键词： Coal Mining-Induced Surface Subsidence Ecological and Infrastructural Challenges Safe Mining Practices Underwater Conditions Multidisciplinary Approach Safety Measures prevention techniques

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