Results 1 to 10 of about 188 (74)
Shuitu Baochi Xuebao, 2017 为室内试验中更好地模拟工程堆积体，利用图像分析法和经典统计学方法对6大典型水蚀区的368座工程堆积体中粒径D＞1 cm的坡面砾石的分布和含量进行概化分析，得到工程堆积体下垫面上中下坡位砾石含量的概化区间。结果表明：工程堆积体坡面各粒径砾石含量大多服从正态分布，且山区和平原丘陵区之间的砾石总含量有显著性差异。工程堆积体坡面砾石重力分选作用明显，且随着砾石粒径的增加，分选程度增大。在室内进行工程堆积体下垫面设计时，山区堆积体的砾石总含量宜设置在50%~60%，其中，细粒砾石含量宜设置在20%~30 ...
王, 戎玉博, 骆, 王海燕
doaj +2 more sources
Effects of Breccias and Round Gravels on Steep Cut Slope Runoff and Sediment Yield Under Simulated Rainfall [PDF]
, 2023 [Objective] The effects of breccias and round gravels on steep cut slope infiltration, runoff, sediment yield, and hydrodynamic characteristics were analyzed in order to provide a theoretical basis for a soil erosion prediction model and soil ...
Cao Longxi +5 more
core +1 more source
Trends of Desertification Change and Its Driving Factors in Aksu Region [PDF]
, 2022 [Objective] The trend and driving factors of desertification change in the Aksu region from 2009 to 2019 were studied in order to provide a scientific basis for ecological restoration in the region and for formulating desertification control policies ...
Ran Yajun +4 more
core +1 more source
Mejores prácticas de manejo para el uso optimizado del suelo y el agua en la agricultura [PDF]
, 2021 Chinese translation: Yun Xie, Lixin Chen, Jie Tang, Zhaoqi Fu, Meng Zhang, Hanlin Dong.English version available at http://dx.doi.org/10.20350/digitalCSIC/13964Spanish version available at http://dx.doi.org/10.20350/digitalCSIC/13985在Shui项目框架下 ...
Chen, L. +9 more
core +1 more source
地矿测绘, 2020 本文以浙江天台大佛洞的含砾砂岩为例,进行了岩石天然状态与饱水状态下的单轴压缩对比试验,试验发现含砾砂岩在饱水状态下其单轴抗压强度明显下降,且弹性模量和泊松比等力学参数也出现一定的下降。因此,在实际工程中有必要考虑砂岩在吸水饱和后的强度变化情况。
奇 欧阳, 玉芳 谭, 雅南 王
semanticscholar +1 more source
Effect of Reforestation Tree Species on the Distribution and Stability of Purple Soil Aggregates [PDF]
[Objective] Afforestation following the Grain for Green initiative is a crucial measure to improve soil structure and reduce soil erosion. Understanding the mechanisms of the effects of afforestation tree species on the formation of soil aggregates can ...
HAN Guangzhong +4 more
core +1 more source
Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope [PDF]
[Objective] Soil erosion is one of the most important ecological and environmental problems in the world. It is of great significance to reveal the coupling mechanism of water and gravity combined erosion by analyzing the water and sediment process of ...
MA Lan +4 more
core +1 more source
Shuitu Baochi Xuebao, 2020 为了探究土石混合崩积体坡面细沟流速的变化特征，设置不同的流量（2，4，8，12 L/min）和砾石质量含量（0，10%，30%，50%），采用径流冲刷试验，分析崩积体坡面细沟径流流速的变化过程，研究流速对流量和砾石含量的响应。结果表明：流速在初始阶段（前5 min）减小幅度较大，随着冲刷进行，流速变化趋于平缓，二者呈幂函数关系，纯土坡面的流速衰减趋势大于含砾石的坡面；流速随着流量的增加呈幂函数增加，而随着砾石含量的增加呈对数函数递减；流量与砾石含量对流速的影响均达到显著水平，且流量的作用大于砾石含量 ...
林敬兰
doaj
Evolution Characteristics of Soil and Water Conservation Carbon Pool and Its Carbon Sink Potential in Typical Small Watershed of the Loess Plateau [PDF]
[Objective] To investigate the evolution of soil carbon pool under catchment scale integrated soil and water conservation measures and evaluate the potential of soil and water conservation carbon sink. [Methods] Typical small watershed for soil and water
DONG Pengbei +5 more
core +1 more source
Bearing characteristics of variable diameter micropile based on the improvement of group pile foundation [PDF]
To improve the load-bearing of transmission tower micropile foundation and reduce the material cost, a modified variable diameter micropile foundation type based on group micropile is proposed in this study.
Bin DONG +5 more
core +1 more source