Results 51 to 60 of about 676 (100)
Shuitu Baochi Xuebao, 1995 伴随着黄土坡面上的产流产沙过程，黄土坡面形态亦在经历一个迅速变化的过程。该文主要研究坡面平面形态及其剖面形态的变化与侵蚀类型及微地貌形态的关系。对于 具有特殊意义的平衡状态下的坡面侵蚀机理之探讨，该文结合前文听阁类过程对面蚀与沟蚀机理分别进行了研究，从而初步提示了黄土坡面侵蚀过程中坡面形态变化的机理。
徐为群 金德生
doaj +2 more sources
[Current diagnosis and treatment of skull base osteomyelitis]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023 Tian J.
europepmc +1 more source
Development characteristics and risk assessment of geological hazards along the Lanzhou-Chengdu-Chongqing refined oil pipeline based on machine learning [PDF]
This study focuses on the region along the Lanzhou-Chengdu-Chongqing (Lan-Cheng-Yu) refined oil pipeline, analyzing the development characteristics of geological hazards based on field-surveyed disaster points along the pipeline.
Daojing GUO +4 more
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Shuitu Baochi Xuebao, 2023 等高耕作是一种典型的农业耕作措施,通过影响坡面填洼、入渗等进而影响坡耕地坡面土壤侵蚀过程。通过人工模拟降雨试验,设计降雨强度(90 mm/h)、5个地表坡度(3°,5°,10°,15°,20°)以及2种坡面处理(等高耕作和平整坡面),对径流强度、侵蚀率、径流含沙量、减流减沙效益等指标进行综合对比分析,与平整坡面进行比较,探究了黄土高原坡耕地等高耕作措施对坡面土壤侵蚀过程的影响。结果表明:(1)与平整坡面相比,等高耕作明显延缓坡面初始产流时间,使初始产流时间延迟11.58~31.91 min,随着坡度增大,
陆淑宁 +5 more
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Near-natural ecological restoration in open-pit mine area [PDF]
Ecological restoration in open-pit mining areas faces some problems such as low self-sustaining capacity and high maintenance costs, especially obvious mining traces after restoration.
Jianan XIA +3 more
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Bank collapse-landslide failure mechanism of typical reverse rock bank slope in Three Gorges Reservoir area [PDF]
At present, most of the reverse rock slope toppling instability failure is interpreted as a progressive overall instability failure controlled by dip angle and structural plane. However, the phenomenon of leading edge collapse is common in some reservoir
Bolin HUANG +4 more
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Shuitu Baochi Xuebao, 2022 侵蚀性降雨是引起喀斯特黄壤坡面水土流失的主要动力因子。采用贵州省遵义市浒洋水流域2018—2020年4个径流小区92次侵蚀性降雨产流产沙实测数据,研究次降雨条件下,裸露坡面和块石出露小区对产流产沙的影响。结果表明:(1)侵蚀性降雨可以分为A、B、C 3类,A类降雨是造成喀斯特黄壤坡面土壤侵蚀的主要雨型。侵蚀性降雨的标准为次降雨量＞6.6 mm或I30＞3.6 mm/h。(2)裸露坡面63.27%的侵蚀性降雨径流深＜0.4 mm,66.30%的侵蚀性降雨土壤流失量＜1 g/m2 ...
陈磊 +5 more
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[Diagnostic value of computed tomographic cisternography and magnetic resonance hydrography in cerebrospinal fluid rhinorrhea]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2022 Lu X +5 more
europepmc +1 more source
Research on the comprehensive control technology system of large-scale debris flows in the area affected by strong earthquake in Longmenshan, Sichuan Province [PDF]
In response to the challenges posed by frequent, widespread, long-lasting, large-scale, severe, and difficult-to-control debris flows in strong earthquake areas, this study, based on the results of the National Key R&D Program, investigates dozens of ...
Bin YU +4 more
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Shuitu Baochi Xuebao目的为探究不同坡度及降雨径流条件下坡面细沟侵蚀特征。方法采用连续模拟降雨和上方汇流试验的方法，研究2种坡度（5°、10°）和3种降雨径流阶段（降雨、汇流、降雨+汇流）下坡面侵蚀过程。结果坡面径流量和侵蚀量随坡度的增加而增加，在5°坡度下降雨条件的坡面径流量和侵蚀量分别是汇流条件的1.06、2.23倍，而在10°坡度下其坡面径流量和侵蚀量分别是汇流条件的1.26、3.34倍。产流率随时间变化均呈先增加后趋于平稳的变化特征，初始产流时间随降雨次数的递增和坡度的增加不断提前，且稳定产流率和产沙率也呈增大趋势 ...
王婷婷 +6 more
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