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1.四川大学 山区河流保护与治理全国重点实验室,四川 成都 610065
2.长江水利委员会水文局 西南诸河水文水资源勘测局,云南 昆明 650000
[ "罗铭(1995—),男,助理研究员,博士. 研究方向:河流动力学. E-mail:luoming@scu.edu.cn" ]
研究员,E-mail:huang_er@scu.edu.cn
收稿日期:2023-10-23,
修回日期:2024-02-27,
网络出版日期:2024-05-29,
纸质出版日期:2025-01-20
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罗铭,刘兴年,彭万兵,等.山区河流推移质泥沙监测技术研究进展[J].工程科学与技术,2025,57(1):11–20
Luo Ming,Liu Xingnian,Peng Wanbing,et al.Advances in bedload monitoring technologies in mountain rivers[J].Advanced Engineering Sciences,2025,57(1):11–20
罗铭,刘兴年,彭万兵,等.山区河流推移质泥沙监测技术研究进展[J].工程科学与技术,2025,57(1):11–20 DOI: 10.12454/j.jsuese.202300840.
Luo Ming,Liu Xingnian,Peng Wanbing,et al.Advances in bedload monitoring technologies in mountain rivers[J].Advanced Engineering Sciences,2025,57(1):11–20 DOI: 10.12454/j.jsuese.202300840.
受推移质监测技术的限制,高精度瞬时监测和分析天然山区河流的推移质输移特征变化存在困难,形成技术瓶颈。全球气候变化导致河流水沙变化巨大,加剧了中国的山区河流保护与治理事业的挑战。本文按照直接监测和间接监测分类对近年国内外推移质监测技术研究进展进行了全面整理。直接监测法包括了器测法和坑测法,其中器测法发展较为成熟,但直接监测法在高洪条件下的可操作性及安全性问题仍然突出。间接监测法可连续、长期地记录包含河床变化、推移质输移等信号,主要分为主动监测法和被动监测法,其中被动监测法又分为接触与非接触式,包括了推移质击板/柱/管、地震检波器、水听器等。但间接监测法传感器所记录的信号通常非常复杂,对信号的有效解译及量化标定关系成为该类研究的热点及难点。据此,本文指出了原型观测站点的建设、多源信号监测技术的融合、流域推移质泥沙监测装备体系的构建是未来研究的重点和亟待解决的科技问题。
Significance
2
Accurately monitoring bedload transport in mountain rivers is critical for understanding sediment dynamics
predicting geomorphological changes
and informing sustainable river management practices. Current techniques face considerable limitations
particularly in the context of natural mountain rivers. These regions pose unique challenges due to high flow rates
complex sediment compositions
and rapidly changing environmental conditions. Global climate change further complicates the situation
significantly altering river hydrology and sediment transport.
Progress
2
This study provides an exhaustive review of the current state of bedload monitoring technologies
both domestically and internationally. Direct measurement techniques are thoroughly examined
including instrument-based and pit-slot methods. Instrument-based methods
such as sediment samplers and sediment traps
experience substantial advancements in accuracy
efficiency
and data collection capabilities. However
these methods face significant limitations
particularly regarding their applicability during high flood conditions. Issues such as equipment damage
safety concerns
and the inability to capture sporadic and highly concentrated bedload events present considerable challenges. Pit-slot methods involve the excavation of pits or slots in the river bed to directly measure sediment load. Although these methods yield accurate measurements
they are labor-intensive
disruptive to the natural river environment
and often impractical in high-energy mountain rivers. Indirect measurement methods
capable of long-term
continuous recording of signals related to bed changes and bedload transport
are extensively reviewed. These methods are primarily divided into active and passive methods. Active methods
such as acoustic Doppler velocimetry and laser Doppler anemometry
use externally generated signals to measure bedload transport. Although these methods provide the advantage of non-invasive measurements
they are affected by factors such as water turbidity
signal scattering
and interference from suspended sediment. Passive methods are further categorized into contact and non-contact types. Contact methods
such as bedload impact plates
columns
and pipes
rely on the impact of moving sediment to generate signals. Non-contact methods
including seismometers and hydrophones
detect the vibrations or sounds produced by bedload movement. These methods enable continuous
real-time monitoring and provide valuable insights into sediment transport dynamics. However
the signals recorded by these sensors are often complex and influenced by various environmental factors. This complexity creates significant challenges in signal interpretation and quantitative calibration
making this a research hotspot with ongoing efforts to develop more effective signal processing and calibration techniques. The study concludes by emphasizing the need to construct prototype observation stations
integrate multi-source signal monitoring technologies
and develop watershed bedload monitoring equipment systems. These aspects require immediate resolution of technological challenges to enhance hydro-sediment monitoring capabilities. Understanding the spatiotemporal distribution characteristics of bedload transport in mountain rivers and its relationship with geological environments and climatic conditions in the basin remains a crucial research priority.
Conclusions and Prospects
2
This understanding further raises the development of bedload measurement technology and computational theoretical methods
providing fundamental data support for studying the global sediment source-sink system. It also provides significant references for water resource environmental management
sustainable development planning in mountain basins
disaster prevention and mitigation
and major national engineering construction in China. Despite extensive research and progress
the complexity of bedload monitoring issues presents considerable exploration space based on existing advancements and results. The key and urgent technical problems include constructing prototype observation stations
integrating multi-source signal monitoring technologies
and building watershed bedload monitoring equipment systems. These challenges emphasize the importance of continued research and development in this field to improve the understanding of sediment dynamics in mountain rivers and to contribute to more sustainable river management practices.
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