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地下室迎水面补漏技术的探索和应用 被引量:2
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作者 邵千江 《建筑施工》 2020年第1期82-85,共4页
结合工程实践,对于严重渗漏水的地下室,在采用传统的背水面注浆方式已无法解决渗漏水问题的情况下,提出一种迎水面补漏技术,即打穿结构板,并通过高压注浆,在迎水面再造一个永久防水层。该做法不仅快速解决了地下室底板、顶板、外墙板的... 结合工程实践,对于严重渗漏水的地下室,在采用传统的背水面注浆方式已无法解决渗漏水问题的情况下,提出一种迎水面补漏技术,即打穿结构板,并通过高压注浆,在迎水面再造一个永久防水层。该做法不仅快速解决了地下室底板、顶板、外墙板的渗漏水问题,也解决了沉降缝、变形缝、后浇带等处的渗漏水问题。同时,在顶板、墙板及已完地坪面上采用微创法迎水面注浆方式进行补漏,几乎不留痕迹,并可避免对业主的影响。 展开更多
关键词 地下室渗漏水 水面高压注 永久防水层 微创法补漏
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天水的吃
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作者 叶梓 《丝绸之路》 2004年第7期45-47,共3页
关键词 浆水面 甘肃 甜馍馍 饮食文化 生活习俗 天水市
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别具一格的民俗文化
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《西部大开发》 2016年第12期84-86,共3页
汉中端公戏 汉中处于秦岭巴山之间,汉水、嘉陵江上游,受巴蜀荆楚文化影响,又长期封闭阻隔,形成了原始的傩文化,至今保留着傩祭、傩舞、傩戏即跳端公这一古巫文化的遗存.如广泛流传于镇巴、宁强、略阳、南郑的“羊角舞”、“羊皮鼓”、... 汉中端公戏 汉中处于秦岭巴山之间,汉水、嘉陵江上游,受巴蜀荆楚文化影响,又长期封闭阻隔,形成了原始的傩文化,至今保留着傩祭、傩舞、傩戏即跳端公这一古巫文化的遗存.如广泛流传于镇巴、宁强、略阳、南郑的“羊角舞”、“羊皮鼓”、“耍坛”、“跑轿”以及“上刀山”、“过火海”的傩技表演.汉中端公戏以娱神娱人,神人同乐,酬神驱鬼,祛灾避祸为内涵,动作粗狂豪放,韵律古朴浑圆,音乐欢乐优美,唱腔刚柔相济,为普通群众喜闻乐见.新中国成立之后,汉中文化主管部门曾多次组织力量挖掘端公戏,整理和创作了一批端公小戏,如《打麦场》、《吹鼓手招亲》、《一分工》等,其中《一分工》被中央和陕西省电台录音,制唱片,流行全国.改革开放以来,汉中的傩文化作为非物质文化遗产得到有效的保护,内容健康,形式优美,传播正能量的端公戏演出遍布城乡. 展开更多
关键词 浆水面 菜豆腐 门神 渔鼓 民俗文化 古镇 镇巴 地方特产 羌文化 秦岭南坡 生动有趣 原公 小戏
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Effects of Gully Erosion and Gully Filling on Soil Degradation in the Black Soil Region of Northeast China 被引量:9
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作者 TANG Wen-jian LIU Hong-hu LIU Bao-yuan 《Journal of Mountain Science》 SCIE CSCD 2013年第5期913-922,共10页
Gully erosion has caused soil degradation and even reduced soil productivity. However, only few studies on the effects of gully erosion and artificial controlling measures on soil degradation in the Black Soil Region ... Gully erosion has caused soil degradation and even reduced soil productivity. However, only few studies on the effects of gully erosion and artificial controlling measures on soil degradation in the Black Soil Region of Northeast China are available. Thus, this study explores the relationships between gully erosion, gully filling and soil parameters. Two sets of soil samples were collected in the field at: (1) 72 sample points in the gully erosion study area, 60 sample points in the ephemeral and classical gully erosion area (3,518 m2), 12 sample points in the deposition zone (443 m2), (2)1o reference points along a slope unaffected by gully erosion representing the original situation before the gully was formed. All soil samples were analyzed for gravel content (GC), soil organic matter (SOM), total nitrogen (TN), available nitrogen (AN), available phosphorus (AP), and available potassium (AK). The soil property values on unaffected slope were fitted by the polynomial curves as the reference values in no gully erosion area. The interpolated soil property values in gully eroded study area were compared with these polynomial curves, respectively, and then, changes of soil property values were analyzed. Gully erosion caused an increase in GC and a decrease in SOM, TN, AN, AP and AK. The change of GC, SOM, TN, AN, AP, AK was 8.8%, -9.04 g kg-1, -0.92 g kg-1, -62.28 mg kg-1, -29.61 mg kg% -79.68 mg kg-1. The soil property values in the study area were below optimal values. Thus, we concluded that gully erosion and gully filling caused both on-site and off-site soil degradation. Soil degradation area was 0.65 % of the cultivated land. In addition, it was proved that gully filling were an improper soil and water conservation measure, which seems to exacerbate the problem. Thus, it is suggested that soil where soil is deep is moved to fill the gully, and then the area around the filled gullies should be covered by grass for preventing the formation and development of the gully. 展开更多
关键词 Deposition zone Gully erosion Ephemeral gully Classical gully Soil nutrients Gullyfilling
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Effects of fractal surface on rheological behavior and combustion kinetics of modified brown coal water slurries 被引量:6
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作者 Zhifang Gao Shuquan Zhu +3 位作者 Mingdong Zheng ZhaojinWu Huihong Lu Weiming Liu 《International Journal of Coal Science & Technology》 EI 2015年第3期211-222,共12页
The paper reports the effects of surface fractal structures on the rheological behavior and combustion kinetics of raw brown coal and three modified coal water slurries (CWSs). The results show that the fractal stru... The paper reports the effects of surface fractal structures on the rheological behavior and combustion kinetics of raw brown coal and three modified coal water slurries (CWSs). The results show that the fractal structures and physicochemical properties of samples are dependent on various modification processes. The apparent viscosities of the coal water slurries increase with increasing surface fractal dimensions (D), especially with decreasing shear rates. Fur- thermore, it has been proved that the ignition temperatures and apparent activation energies of modified CWSs are lower than that of raw coal water slurry. Compared with the traditional qualitative analysis of the effect of pore structures on CWSs properties, D can more efficiently indicate the quantificational effect of pore structures on the rheological behavior and combustion kinetics of CWSs. 展开更多
关键词 Coal water slurry Modification processes Fractal surface Rheological behavior Combustion kinetics
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Invading track of chloride ions in cemented-based materials
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作者 马昆林 谢友均 +1 位作者 龙广成 吴克刚 《Journal of Central South University》 SCIE EI CAS 2010年第2期263-268,共6页
Invading track of chloride ions and chloride ion distribution rule in cement-based materials were investigated by partially soaking in 3.5% (mass fraction) NaCl solution and fully immerging in 3.5% and 5.0% (mass f... Invading track of chloride ions and chloride ion distribution rule in cement-based materials were investigated by partially soaking in 3.5% (mass fraction) NaCl solution and fully immerging in 3.5% and 5.0% (mass fraction) NaC1 solution, respectively, and relevant invading mechanisms were discussed. Results indicate that under full immerging condition, the invading track of chloride ions in cement mortar is similar to beeline that is vertical to chloride ion invading direction, and chloride ion content decreases rapidly with the increase of chloride ion invading depth. Under partial soaking condition, the invading track of chloride ion in cement mortar is similar to the shape of concave parabola, and chloride ion content decreases slowly along the lengthway direction of cement mortar samples in the distance of 20-80 mm from the bottom. Lots of chloride ions accumulate in cement mortar surface layer under the effect of capillary rise and evaporation and then invade cement mortar by diffusion effect. Under partial soaking condition, cement mortar is distinguished by four areas, i.e., immerging area, wet area, crystallization area and dry area. 展开更多
关键词 CONCRETE chloride ions invading track DURABILITY
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Evaluation of the Properties of Cement Pastes and Mortars Used in the Encapsulation of Bituminized Waste to be Disposed in a Near-Surface Repository
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作者 Vanessa Mota Vieira Cledola Cassia Oliveira de Tello 《Journal of Environmental Science and Engineering(B)》 2016年第11期541-548,共8页
The Brazilian repository is being planned to be a near-surface one. In Brazil, the low and intermediate level radioactive wastes are immobilized using cement and bitumen for nuclear plant Angra 1 and Angra 2, respecti... The Brazilian repository is being planned to be a near-surface one. In Brazil, the low and intermediate level radioactive wastes are immobilized using cement and bitumen for nuclear plant Angra 1 and Angra 2, respectively. The major problems due to the disposal of bituminized wastes in repositories are swelling of the waste products and their degrad^ttion in the long term. To accommodate the swelling of the bituminized wastes, the drums are filled up to 70-90% of their volume, which reduces the structural the repository stability and the disposal availability. Countries, which use bitumen in the solidification of NPP's radioactive waste and have near-surface repositories, need to immobilize this bituminized waste within other drums containing cement pastes or mortars to disposal them. This study aims to evaluate the properties of bitumen, cement pastes and mortars to be used in the encapsulation of bituminized wastes. The formulations of two pastes and two mortars were selected for the pilot scale tests. The laboratory and pilot scales results were very similar, indicating that any of these formulations could be used. However, the better formulation will be chosen after the leaching test results, because it is an essential parameter in the long-term repository performance. 展开更多
关键词 Radioactive wastes BITUMEN cement pastes mortars.
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Kinetics of Reaction-Crystallization of Struvite in the Continuous Draft Tube Magma Type CrystallizersmInfluence of Different Internal Hydrodynamics 被引量:5
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作者 Joanna Koralewska Krzysztof Piotrowski +1 位作者 Boguslawa Wierzbowska Andrzej Matynia 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2009年第2期330-339,共10页
A laboratory-scale reaction-crystallization process of struvite synthesis from diluted water solution of Mg^2+, NH^+ 4 and PO3- ions was studied. The research covered the tests of two original constructions of conti... A laboratory-scale reaction-crystallization process of struvite synthesis from diluted water solution of Mg^2+, NH^+ 4 and PO3- ions was studied. The research covered the tests of two original constructions of continuous jet-pump Draft Tube Magma (DTM)-type crystallizers with internal circulation of suspension (upward/downward). Interactions between constructional, hydrodynamic and kinetic factors were established and discussed. Nucleation and linear growth rates of struvite crystals were calculated on the basis of population density distribution. Kinetic model of idealized Mixed Suspension Mixed Product Removal (MSMPR) crystallizer considering the size-dependent growth mechanism was applied (Rojkowski hyperbolic equation). For comparison purposes the kinetic data corre- sponded to a simpler, continuous draft tube-type crystallizer equipped with propeller agitator were analyzed. It was concluded that crystal product of larger size was withdrawn from the jet-pump DTM crystallizer of the descending flow of suspension in a mixing chamber. 展开更多
关键词 reaction-crystallization STRUVITE phosphorus recycling nucleation crystals growth DTM MSMPR crystallizers size-dependent growth kinetics liquid jet pump propeller agitator
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Bonding between Aggregates and Cement Pastes in Concrete
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作者 Almahdi Bahalul Ahmed Deiaf 《Journal of Civil Engineering and Architecture》 2016年第3期353-358,共6页
This investigation was carried out to study the effect of aggregate roughness on ITZ (interfacial transition zone) at same water/cement ratio and the influence of silica fume on the bond strength. On the experimenta... This investigation was carried out to study the effect of aggregate roughness on ITZ (interfacial transition zone) at same water/cement ratio and the influence of silica fume on the bond strength. On the experimental side, two types of aggregates (limestone and granite) were used, which were prepared with broken surface. Cement (Type I) was used with same w/c ratio for all batches. In order to study the effect of silica fume on the bond, the same mixes were produced with 8% silica fume. Three different tests were performed: "pull a part", Brazilian test and compressive strength test. The specimens for Brazilian and compressive strength were tested after 28 days, while the "pull a part" specimens were tested after 29 days. The result showed that the bond strength is influenced by the surface roughness of aggregate. For the same mix, limestone recorded higher bond strength than granite. Moreover, the bond strength is increased by adding the silica fume. 展开更多
关键词 ITZ LIMESTONE GRANITE silica fume bond strength "pull a part" test
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阳光喂养的名词(散文)
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作者 刘汉斌 《六盘山》 2018年第5期100-109,共10页
豌豆花月光如水的夜里,我在回家的途中路过一片开花的豌豆地。月色中的豌豆地绿得深沉,是一片被皎洁的月光照耀着的墨绿色的绒毯,平平展展地铺开。鼻端的湿气很重,水汽自上而下聚集、凝结,月色浓得能拧出水来。我在田埂上坐下,面朝豌豆... 豌豆花月光如水的夜里,我在回家的途中路过一片开花的豌豆地。月色中的豌豆地绿得深沉,是一片被皎洁的月光照耀着的墨绿色的绒毯,平平展展地铺开。鼻端的湿气很重,水汽自上而下聚集、凝结,月色浓得能拧出水来。我在田埂上坐下,面朝豌豆地,背后的地里种植着另外一种豌豆。 展开更多
关键词 龙葵果 浆水面 豌豆花
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戊戌春金色之旅
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作者 芦雅萍 许诺 《企业观察家》 2019年第2期125-128,共4页
伫立在山巅,一览金色的花海,一览江山的秀美,遥想古今,不觉双手合十微阖双目——心中只剩下了两个字:感恩.感恩如此美丽的天地山河,感恩历史,感恩古人,更感恩世世代代生活劳作在这里,使今天的秦巴山水一天比一天更加美好富裕的父老乡亲!
关键词 油菜花 秦巴山 浆水面
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植物词及其他
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作者 刘汉斌 《朔方》 2018年第9期82-87,共6页
蒲公英南湾向北不足一里地,横着一道结实的堤坝,每到夏天,黄灿灿的花儿镶满堤坝的两侧。夏日的堤坝任由这绚烂的色彩肆意洇染。盛花期的蒲公英独自霸占了大堤,遮蔽着低处正在长高的野草。堤坝拦住了蓄意北去的河水,也拦住了在秋日里随... 蒲公英南湾向北不足一里地,横着一道结实的堤坝,每到夏天,黄灿灿的花儿镶满堤坝的两侧。夏日的堤坝任由这绚烂的色彩肆意洇染。盛花期的蒲公英独自霸占了大堤,遮蔽着低处正在长高的野草。堤坝拦住了蓄意北去的河水,也拦住了在秋日里随风飘飞的蒲公英种子,却总是拦不住水要北去、蒲公英要远行的势头。偶遇雨水充足,坝内的水漫过堤坝,向北奔流,常见秋风中蒲公英的种子飞过了堤坝,在别处的土地上生根发芽。 展开更多
关键词 蒲公英种子 浆水面 水稻种子
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