Results 11 to 20 of about 745 (139)
Shuitu Baochi Xuebao, 2023 为探究金沙江干热河谷冲沟区优先流与土壤力学的相关机理,揭示优先流影响下土壤抗剪强度特征规律,丰富干热河谷冲沟发育区沟侵蚀机理,为该地区进一步开展沟蚀治理提供理论依据。在典型冲沟发育区选择完整冲沟为研究对象,基于染色示踪、土壤理化、原状土直剪试验,利用RDA等统计方法分析优先流与土壤力学指标间的相关性,明晰优先流和抗剪强度的关系。结果表明:(1)由于冲沟发育使冲沟内由集水区到沟底优先流发育程度逐渐降低。土壤含水率、容重、总孔隙度、有机质含量均呈优先流区大于基质流区,机械组成分形维数整体上基质流区(2 ...
徐贵迁 +4 more
doaj
Mechanical behavior and stability control of regenerated roof in long wall stratified mining of thick steeply dipping coal seam [PDF]
, 2023 This study focused on the stability control of roof in long wall stratified mining of large dip angle thick coal seam. Taking Panbei Coal Mine in Huainan as an example, the effect mechanism of water content, compression ratio and grain size grading on ...
Ke YANG +3 more
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Modification method of borehole shear mechanical parameter characterization and its experimental study [PDF]
The borehole shear test is an important method to quickly measure the shear strength of rock in the field, but its application is limited due to its large measurement error.
Bingyuan CUI +8 more
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Shuitu Baochi Xuebao, 2021 为揭示冻融循环作用对棕壤抗剪强度的影响，采集沈阳地区5 cm和25 cm 2个深度原状棕壤（分别为H5和H25）为研究对象，通过室内冻融循环模拟和土壤直剪试验，研究冻融循环次数和土壤含水率对土壤抗剪强度的影响。结果表明：（1）土样含水率越高，初次冻融作用的破坏效果越强，1次冻融循环后，含水率为25%的H5和H25土样黏聚力分别下降50.00%和25.87%；含水率35%的H5和H25土样黏聚力分别下降75.61%和50.77%。15次冻融循环后，含水率10%的H5和H25土样黏聚力分别增加74.36 ...
朱龙祥 +5 more
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Macro-micro Evolution Characteristic Function of Solidified Loess under the Effects of Dry-wet Cycles [PDF]
[Objective] To reveal the durability of solidified loess slope protection in long-term service. [Methods] Under the condition of dry-wet cycles, direct shear, permeability mechanical tests of solidified loess were carried out to study the evolution law ...
CHANG Zhou +6 more
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Cosserat-particle finite element method for large deformation analysis of rock and soil [PDF]
, 2023 The particle finite element method (PFEM) inherits the solid mathematical foundation of the finite element method and possesses the capability of modeling the problems with large deformation and complex boundary, so it has been widely used in the fields ...
Cui, J +4 more
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振动荷载对厦门地区红黏土抗剪强度影响的试验与分析 [PDF]
, 2007 以厦门某建筑工地红黏土为试样,进行振动荷载作用前、后三轴剪切对比试验。通过对试验数据的分析,对振动荷载对试样的黏聚力、内摩擦角、抗剪强度方程、抵抗侧向变形能力等的影响特性进行研究。研究结果显示,在其他试验条件相同的情况下,经振动荷载作用后的红黏土试样黏聚力降低51.72%,内摩擦角减少50%,抗剪强度线向下显著偏移,表明振动荷载不利于红黏土的稳定和承载 ...
俞登荣, 胡华, 顾恒星
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Integrated assessment of soil cutting slope stability using fuzzy mathematics and numerical simulation [PDF]
, 2023 The complexity and uncertainty of the factors affecting the stability of artificial slope in loess regions pose challenges for achieving objective and accurate assessments through a single method. To investigate the stability of the artificial soil slope
Chongjing WANG, Guowei LIU, Long ZHANG
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Shuitu Baochi Xuebao, 2021 为了系统性研究灌木植物根系的固土力学效应，探讨土体对根系的摩阻特性，以4种不同土壤粒径（原级配，1.0~2.0，0.5~1.0，
郭欢 +4 more
doaj
Parameter design of coal pillar in highwall mining under action of dynamic-static load [PDF]
, 2023 In view of the application of end slope shearer mining technology to recover a large amount of residual coal, the determination of reasonable width of supporting coal pillar is a key factor whether it can be safely and efficiently popularization and ...
Dong WANG +7 more
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