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Mechanism of grouting diffusion and consolidation of rock mass based on D-Rb-C coupled model [PDF]
, 2023 Grouting reinforcement is an effective method for controlling the stability of engineering rock mass. The mechanism is mainly to inject or infiltrate the grout into the fracture of rock mass to form a grouting entity, and strengthen the stability of rock
Bin LIU +7 more
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Experimental study on mix proportion of transparent similar materials for rock mass [PDF]
, 2023 Traditional rock mass is opaque and the internal deformation and fracture process cannot be observed directly, using transparent materials to make similar models is an effective solution.
Binyu LUO +4 more
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Mechanical Properties of Medicago Sativa and Euphorbia Hypericifolia Root-Soil Complex [PDF]
, 2023 [Objective] The effects of soil moisture content and root area ratio on the soil consolidation effect of Medicago sativa and Euphorbia hypericifolia root systems and the interaction mechanism of root-soil were studied in order to provide scientific basis
Hai Long, Tan Shilin, Xu Bo
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Deformation and failure characteristics of gas drainage drilling-reaming coal mass in non-uniform stress field [PDF]
, 2023 The deformation and failure characteristics of coal around gas drainage boreholes in deep soft and low permeability coal seams affect coal seam gas pre-drainage.
Chao XU +6 more
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Approximate solution of plastic zone boundary of surrounding rock of circular roadway considering axial stress [PDF]
, 2023 In order to study the boundary of plastic zone of surrounding rock of a roadway considering axial stress, based on Mohr-Coulomb criterion, the implicit equation of plastic zone boundary of surrounding rock of circular roadway considering axial stress is ...
Guangdong ZHOU +7 more
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Shuitu Baochi Xuebao, 2022 为探究不同植物根-土复合体抗剪强度的差异性及各因素对其的影响程度, 选取汶川县针叶林、阔叶林、灌丛、草地4种不同植被覆盖区为研究区, 通过野外制取16种优势植物根-土复合体和无根裸土原状试样并开展室内快剪试验。分析了汶川县典型植物根系对土体抗剪强度和抗变形能力的增强作用, 运用灰色关联法分析影响复合体抗剪强度的因素。结果表明: (1)16种植物根系均能在一定程度上提高土体抗剪强度和抗变形能力, 且主要通过提高土体黏聚力增强其抗剪强度; 根-土复合体黏聚力均大于裸土, 其增幅为6.09%~153.27%,
孙庆敏 +4 more
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Shuitu Baochi Xuebao, 2023 为揭示季节性冻融区土壤侵蚀阻力的变化机制,确定影响土壤侵蚀阻力主控因子,通过室内冻融模拟、水槽冲刷和土壤抗剪试验,对黄绵土(SM粉质壤土)、风沙土(WS砂壤土)和黑土(KS黏壤土)侵蚀阻力影响因素进行研究。结果表明:(1)随着冻融循环次数增加,细沟可蚀性值逐渐升高,而临界剪切力降低。经历10次冻融循环后,SM粉质壤土、WS砂壤土和KS黏壤土的细沟可蚀性分别增加76%,63%,11%,临界剪切力分别减小37%,13%,91%。(2)细沟可蚀性随土壤抗剪强度、黏聚力和内摩擦角增大而减小 ...
卢超 +3 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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Shuitu Baochi Xuebao, 2021 土-水特征曲线通常用于估计非饱和土壤的抗剪强度，但是由于植物根系的吸水作用和加筋效应，使得植物边坡的抗剪强度不能直接利用基于基质吸力的非饱和土抗剪强度计算公式进行计算。以裸露边坡和植被边坡为研究对象，采用张力计现场测试和室内剪切试验相结合的方法，拟合水土特征曲线关系。结果表明：（1）植物根系的植入有效地提高了边坡土体的进气值，较素土进气吸力值增幅41.10%。在同等含水率条件下，植物边坡基质吸力明显大于素土边坡，提高了边坡土体的持水能力。（2）边坡红黏土基质吸力与含水率的关系符合V-G模型 ...
王轩 +4 more
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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
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