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Assessment indicator system for siting of geologic CO2 sequestration in low-porosity and low-permeability saline aquifers: A case study of the Ordos Basin [PDF]
ObjectiveCO2 injection and geologic sequestration in deep saline aquifers as underground spatial resources represents an important means of achieving the targets of greenhouse gas emission reduction and carbon neutrality.
Haofan WANG +6 more
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Shuitu Baochi Xuebao, 2017 为探讨盐渍化土壤在冻融过程中孔隙水及未冻水含量的变化规律，运用核磁共振仪（NMR）测定了不同盐渍土与不同NaCl饱和试样的孔隙水及未冻水含量，同时研究了不同土质对冻结过程中未冻水含量的影响，分析了冻融过程中的滞后现象。试验设置8个处理，即轻度盐渍化粉砂壤土、中度盐渍化壤土2种土壤类型和蒸馏水、0.2%、0.6%、1.0% NaCl 4种溶液。结果表明:（1）在盐渍土冻结过程中，大孔隙降幅速率＞小孔隙降幅速率，而盐渍土的融解先从小孔隙开始。（2）无论是轻度盐渍土还是中度盐渍土，1.0 ...
卢星航 +5 more
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Spontaneous combustion characteristics of hydrothermal eroded coal in deep mining [PDF]
In the process of deep mining, the temperature of mine water is significantly higher than that of shallow coal seams. The erosion of high-temperature hydrothermal fluids affects the physical and chemical characteristics of coal, which in turn affects its
Daimin HU +5 more
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Shuitu Baochi Xuebao, 2021 根系的存在对土壤大孔隙的产生及渗透特性有着重要影响，为研究浅表层土体中根系生物量与土壤大孔隙特征之间的数值关系，在缙云山针阔混交林中选取杉木单株植物根际土体为研究对象，进行染色示踪试验及根系生物量测量，取样后在室内采用自制定水头装置进行水分穿透试验和渗透试验。结果表明：（1）不同土壤剖面和不同土层深度的土壤染色面积不同，距离树木主干位置越远的剖面染色面积越大，而距离主干位置越近的剖面染色面积越小，且随着土层深度的增加整体上每个剖面上染色面积比均下降；（2 ...
祁子寒 +5 more
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Zhongshan Daxue xuebao. Yixue kexue ban, 2006 【目的】 通过扫描电镜观察壳聚糖和Ⅰ型胶原在不同温度下以不同比例制备成冻干状组织工程复合支架材料的微观结构, 以获得最佳浓度、比例、温度匹配组合, 制备理想的组织工程复合支架材料。【方法】在- 5 ℃、- 20 ℃和- 80 ℃将不同浓度的壳聚糖、Ⅰ型胶原以及它们不同比例的混合液冷冻 12 h 后冻干 24 h, 扫描电镜观察不同材料表面和内部的微观结构, 并计算其平均孔径和孔隙率。【结果】壳聚糖、Ⅰ型胶原以及它们的混合液冻干后都形成白色海绵状固体, 冷冻温度越低冻干后材料的孔径越小, 孔隙率越低 ...
李容林
doaj
Effect of holding time on microstructure of secondary carbonized briquette and strengthening of mechanical-seepage characteristics [PDF]
Physical simulation test is an effective method of occurrence mechanism and prevention and control of coal mine gas disasters. At present, the mechanical strength and permeability of briquette materials used in coal mine gas disasters physical simulation
Guoliang CAI +4 more
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CFD simulation on in-situ ignition of UCG in deep coal seam [PDF]
Underground coal gasification (UCG) as an alternative coal mining technology is attracting much attention. However, due to the high experimental cost of UCG, the evolution mechanism of coal seam should be deeply explored prior to the implement of ...
Can FANG +10 more
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Shuitu Baochi Xuebao, 2006 为了研究采煤塌陷对风沙区土壤理化性质的影响,为干旱和半干旱风沙区采煤塌陷地的复垦工作提供理论依据,本文运用土壤学基本理论和方法,测定、计算了毛乌素沙地东南缘补连塔煤矿塌陷区和非塌陷区的土壤机械组成、容重、孔隙度、田间持水量、饱和导水率和养分等指标。方差分析结果表明:与非塌陷区相比,塌陷沙丘物理性粘粒含量明显减少,尤其地表10 cm处;塌陷沙丘顶部和中部土壤容重和孔隙度没有明显变化,而沙丘底部和丘间低地土壤容重明显降低,孔隙度明显增大;塌陷沙丘0~40 cm内土壤容重和孔隙度无明显变化,但40~100 ...
王健 +4 more
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Guangtongxin yanjiu, 2016 为了研制具有更高灵敏特性的温度传感器,文章提出利用光子带隙效应,在PCF（光子晶体光纤）中选择性填充热敏液体实现高灵敏温度传感。应用全矢量平面波展开法计算光纤带隙,带隙及其宽度随温度规律性漂移。当在包层空气孔中选择不同位置和结构填充热敏液体时,发现仅填充内层空气孔时,带隙随温度漂移造成的变化率最大。当在包层第一层空气孔中填充热敏液体,晶格周期Λ=9μm,空气填充率分别选取d/Λ=0.9和d/Λ=0.5时,带隙边界波长检测和带隙宽度检测的温度灵敏度分别可达到22.07和7.01nm ...
尤承杰, 施伟华
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[[alternative]]Mechanism of Microfiltration of Hand to Filter Slurries(II) [PDF]
計畫編號：NSC90-2214-E032-002研究期間：200108~200210研究經費：794,000[[sponsorship ...
黃國楨
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