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Influence of geological factors on coal permeability in the Sihe coal mine

International Journal of Coal Science & Technology 2022年第1期9卷 58-70页

作者： Guangui Zou Qianhua Zhang Suping Peng Jiasheng She deliang teng Chaochao Jin Yuyan Che State Key Laboratory of Coal Resources and Safe Mining BeijingChina College of Geoscience and Surveying Engineering China University of Mining&TechnologyBeijingChina

Permeability of coal reservoirs influence the extraction of coal gas from coal *** coal samples were collected at an anticline and a syncline of the No.3 coal seam in the Sihe coal ***,permeability,pore size,vitrinite reflectance,and liquid nitrogen adsorption of the samples were *** curvatures at the sample locations,and the distance between the sampling locations and the nearest faults were calculated based on seismic *** influences of the evaluated parameters on permeability were *** factors that influence permeability of the No.3 coal seam were extracted using principal component analysis(PCA).Based on the porosity–permeability model derived from the Archie formula and classic Kozeny–Carman equation,we deduced that the permeability of coal increased with an increase in *** an increase in average vitrinite reflectance,permeability decreases first and then *** results showed that coal permeability was regulated by three key components representing three *** first component included pore size,depth,and pore complexity accounting for 52.59%of the variability indicating that it was the most important in controlling *** second component included specific surface area,structural curvature,and porosity,and the third component comprised of specific surface area,porosity,and average vitrinite ***,pore diameter and complexity had significant effects on coal *** results show that researchers and stakeholders must consider the interactions among multiple factors rather than single factors to understand the influences on permeability to facilitate efficient utilization of coalbed methane resources.

关键词： Coal mine Permeability Geological factors Principal component analysis

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相对湿度对钙基脱硫剂干法烟气脱硫效率的影响

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环境工程学报 2020年第6期14卷 1563-1569页

作者：吕娟黄利华滕德亮付海峰李天翮陈海焱西南科技大学固体废物处理与资源化教育部重点实验室绵阳621010

为得到干法烟气脱硫较优的相对湿度,并验证钙基脱硫剂在干法烟气脱硫中的可行性,在模拟干法烟气脱硫实验台上,研究了钙基脱硫剂在不同相对湿度(0~45%)条件下,脱硫剂的出口浓度、脱硫效率和固硫量。结果表明,在相对湿度从0变化至45%时,... 详细信息

为得到干法烟气脱硫较优的相对湿度,并验证钙基脱硫剂在干法烟气脱硫中的可行性,在模拟干法烟气脱硫实验台上,研究了钙基脱硫剂在不同相对湿度(0~45%)条件下,脱硫剂的出口浓度、脱硫效率和固硫量。结果表明,在相对湿度从0变化至45%时,可以稳定运行的穿透时间由160 min增加到720 min,可达100%脱硫效率的运行时间由0增至580 min,脱硫剂的固硫量从43.37 mg增加到332.09 mg;增加相对湿度能显著提高烟气脱硫效率,在保证烟气不穿透物料且不出现黏壁现象的条件下,较优的相对湿度为45%。研究明确了在低相对湿度条件下此种脱硫剂的可行性并确定了较优化的干法脱硫湿度,为干法脱硫条件的选择提供了参考。

关键词：干法烟气脱硫脱硫剂相对湿度脱硫效率

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基于GeoProbe平台的能谱网格数据三元色成像技术研究及实现

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地质论评 2023年第S1期69卷 552-554页

作者：杨漫坪王林飞何辉李兆亮李行素林童郑金鑫滕德亮中国自然资源航空物探遥感中心北京100000

在开展航空伽马能谱测量过程中,获取的参数量包括钾、钍、铀等放射性元素,在以往数据处理过程中,仅分别对钾、钍、铀网格进行单可视化,没有进行联合成像显示。为了丰富数据可视化手段,提高数据解释精度,本文针对三元放射性元素成像技术... 详细信息

在开展航空伽马能谱测量过程中,获取的参数量包括钾、钍、铀等放射性元素,在以往数据处理过程中,仅分别对钾、钍、铀网格进行单可视化,没有进行联合成像显示。为了丰富数据可视化手段,提高数据解释精度,本文针对三元放射性元素成像技术及应用展开研究,利用插件技术,通过多个网格组合成像、区域数据可视化不失真等技术.

关键词： GeoProbe平台放射性元素 RGB原理三元成像技术

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四川某高碱性含铜金矿综合回收钙镁铜金试验研究

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黄金科学技术 2019年第5期27卷 777-783页

作者：傅开彬钟秋红毛羽王磊滕德亮赵涛涛固体废物处理与资源化教育部重点实验室四川绵阳621010 西南科技大学环境与资源工程学院四川绵阳621010 四川省海蓝晴天环保科技有限公司四川成都610045

针对碳酸盐、砷和铜含量高的“三高”金矿选矿回收难度较大的问题,采用原矿焙烧脱碳除砷-NH4Cl“闪速”浸钙-(NH4)2SO4浸镁铜-非氰浸剂药剂(swust-1)浸金工艺流程综合回收矿石中有价元素。研究结果表明:当焙烧温度为950℃、焙烧时间为2... 详细信息

针对碳酸盐、砷和铜含量高的“三高”金矿选矿回收难度较大的问题,采用原矿焙烧脱碳除砷-NH4Cl“闪速”浸钙-(NH4)2SO4浸镁铜-非氰浸剂药剂(swust-1)浸金工艺流程综合回收矿石中有价元素。研究结果表明:当焙烧温度为950℃、焙烧时间为2h、矿浆浓度为30%、-0.074mm粒级含量为70%、NH4Cl浓度为3.0mol/L和浸出时间为10min时,矿石中Ca^2+、Mg2+和Cu^2+浸出率分别为82.88%、20.12%和16.75%;在(NH4)2SO4浓度为2.5mol/L、矿浆浓度为30%和浸出温度为50℃的条件下,经过“两段”浸出,Mg^2+和Cu^2+浸出效果较好。经过“焙烧-浸钙镁铜”后,金的浸出率也大大提高。通过上述工艺流程处理后,钙、镁、铜和金的总浸出率分别可达96.18%、95.16%、80.51%和78.86%,提高了高碱性含铜金矿中有价元素浸出率和综合经济价值。

关键词：碳酸盐高碱性含铜金矿焙烧浸出综合回收

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天然石墨的球形化工艺参数优化

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中国粉体技术 2021年第4期27卷 70-76页

作者：滕德亮李朋袁娜吕娟陈俊冬林龙沅陈海焱西南科技大学环境与资源学院四川绵阳621010

为提高球形石墨的振实密度,采用LNP-18A整形机对天然石墨粉碎样进行球化实验,探讨球化轮转速、风量、分级轮转速、球化时间等4种不同参数对石墨球化效果的影响。结果表明:球化轮转速在3600~6000 r/min时,石墨粒径减小,球化作用使得粒度... 详细信息

为提高球形石墨的振实密度,采用LNP-18A整形机对天然石墨粉碎样进行球化实验,探讨球化轮转速、风量、分级轮转速、球化时间等4种不同参数对石墨球化效果的影响。结果表明:球化轮转速在3600~6000 r/min时,石墨粒径减小,球化作用使得粒度分布变窄,振实密度增大;风量提升57.1%,成品率降低7%,D10增大11.43%;D10与Dmax随着分级轮转速增加减小的程度最为显著,成品率增加8%,振实密度变化不大;球化180 min后球形石墨的振实密度增大97.19%,细粒级颗粒含量先减少后增加;物料为2 kg条件下,球化轮转速为6000 r/min,分级轮转速为3900 r/min,风量为4.54 m^(3)/min,球化180 min振实密度达到0.913 g/cm^(3),成品率达到67%。

关键词：天然石墨球形化振实密度成品率

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Effects of arrangement of surge-root irrigation emitters on growth,yield and water use efficiency of apple trees

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排灌机械工程学报 2020年第7期38卷 713-719页

作者： LI Zhongjie FEI Liangjun HAO Kun LIU teng CHEN Nanshu ZHANG Quanju HUANG deliang State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area Xi′an University of TechnologyXi′anShaanxi 710048China

Six-year old apple trees were selected for field *** objective of this study was to obtain the reasonable arrangement of surge-root irrigation emitters in apple *** were three factors:the buried depth H(25,40,55 cm),the horizontal distance L(30,40,60 cm)between the emitters and the trunk of the experimental tree,and the number of the irrigation emitters N(1,2,4).The effect of the arrangement of surge-root irrigation emitters on the growth,yield and irrigation water use efficiency(IWUE)of apple trees were studied in Northern Shaanxi where the irrigation quota takes 60%-75%of the field water *** results showed that the arrangement of emitters for surge-root irrigation had a significant effect on apple tree yield and IWUE,especially,the yield and IWUE reached 28388.17 kg/hm2 and 16.83 kg/m3 in treatment T3,*** the same L and N levels(T1,T2,and T3),the yield and IWUE in treatment T3 were the highest,and the yields in treatments T1 and T2 were decreased by 26.22%and 31.48%,while IWUE is reduced by14.02%and 18.12%compared with T3,*** the same H and N levels(T3,T4,and T5),the yield and IWUE of apple trees were decreased with increasing L ***,when L was 30 cm(T3),the yield and IWUE were the *** same L and H levels(T3,T6,and T7)could promote the growth of apple trees when N was 2(T3).Compared with treatment T3,it was found that the increment of new shoots was decreased by 8.07%-18.71%,and the fruit diameter was decreased by 5.41%-9.11%.Therefore,two emitters should be arranged symmetrically on both sides of an apple tree,each was buried at a 40 cm depth and 30 cm away from the trunk of the tree to effectively improve the yield and IWUE of the apple tree in mountainous areas in Northern Shaanxi.

关键词： irrigation emitters surge-root irrigation apple trees arrangement modes yield irrigation water use efficiency

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Statistical Downscaling Based on Dynamically Downscaled Predictors: Application to Monthly Precipitation in Sweden

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Advances in Atmospheric Sciences 2003年第6期20卷 951-958页

作者： Cecilia HELLSTROM deliang CHEN EarthSciencesCentre GothenburgUniversityGothenburgSweden NationalClimateCenter ChinaMeteorologicalAdministrationBeijingChina

A prerequisite of a successful statistical downscaling is that large-scale predictors simulated by the General Circulation Model (GCM) must be realistic. It is assumed here that features smaller than the GCM resolution are important in determining the realism of the large-scale predictors. It is tested whether a three-step method can improve conventional one-step statistical downscaling. The method uses predictors that are upscaled from a dynamical downscaling instead of predictors taken directly from a GCM simulation. The method is applied to downscaling of monthly precipitation in Sweden. The statistical model used is a multiple regression model that uses indices of large-scale atmospheric circulation and 850-hPa specific humidity as predictors. Data from two GCMs (HadCM2 and ECHAM4) and two RCM experiments of the Rossby Centre model (RCA1) driven by the GCMs are used. It is found that upscaled RCA1 predictors capture the seasonal cycle better than those from the GCMs, and hence increase the reliability of the downscaled precipitation. However, there are only slight improvements in the simulation of the seasonal cycle of downscaled precipitation. Due to the cost of the method and the limited improvements in the downscaling results, the three-step method is not justified to replace the one-step method for downscaling of Swedish precipitation.

关键词： downscaling multiple regression atmospheric circulation indices monthly precipitation Sweden

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Climate-Induced Variability of Sea Level in Stockholm: Influence of Air Temperature and Atmospheric Circulation

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Advances in Atmospheric Sciences 2005年第5期22卷 655-664页

作者： deliang CHEN Anders OMSTEDT Earth Sciences Centre Goteborg University Sweden Laboratory for Climate Studies/National Climate Center China Meteorological Administration Beijing 100081

This study is focused on climate-induced variation of sea level in Stockholm during 1873-1995. After the effect of the land uplift, is removed, the residual is characterized and related to large-scale temperature and atmospheric circulation. The residual shows an overall upward trend, although this result depends on the uplift rate used. However, the seasonal distribution of the trend is uneven. There are even two months （June and August） that show a negative trend. The significant trend in August may be linked to fresh water input that is controlled by precipitation. The influence of the atmospheric conditions on the sea level is mainly manifested through zonal winds, vorticity and temperature. While the wind is important in the period January-May, the vorticity plays a main role during June and December. A successful linear multiple-regression model linking the climatic variables （zonal winds, vorticity and mean air temperature during the previous two months） and the sea level is established for each month. An independent verification of the model shows that it has considerable skill in simulating the variability.

关键词： sea level Baltic sea atmospheric circulation temperature Stockholm

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Preparation and Photocatalytic Properties of g-C_3N_4 /TiO_2 Hybrid Composite

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Journal of Materials Science & Technology 2010年第10期26卷 925-930页

作者： Xifeng Lu Qilong Wang deliang Cui State Key Lab of Crystal Materials Shandong University Jinan 250100 China Lunan Institute of Coal Chemical Engineering Jining 272000 China State Quality Supervisor and Inspection Center of Coal and Coal Chemical Product Jining 272000 China

g-C3N4/TiO2 composite were prepared by hydrolysis of Ti（OC4Hn9） 4 and the precursors of g-C3N4 at room temperature and annealing in nitrogen atmosphere.X-ray diffraction results revealed that all the products were anatase *** chemical nature of O,N of the g-C 3N4/TiO2 were identified by X-ray photoelectron spectroscopy,presenting N-Ti-O and N-Ti-N doping status of the *** g-C3N4 /TiO2 composite showed better photocatalytic activity for the UV and visible-light degradation of Rhodamine B.

关键词： Composite materials Chemical synthesis X-ray photoelectron spectroscopy (XPS)

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MPC-based Torque Distribution for Planar Motion of Four-wheel Independently Driven Electric Vehicles:Considering Motor Models and Iron Losses

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CES Transactions on Electrical Machines and Systems 2023年第1期7卷 45-53页

作者： Yiyan Su deliang Liang Peng Kou the State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi'an Jiaotong UniversityXi’an710049China IEEE

The most critical obstacle for four-wheel independently driven electric vehicles(4WID-EVs)is the driving *** the actuators of 4WID-EVs,motors account for its major power *** this sense,by properly distributing torques to minimize the power consumption,the driving range of 4WID-EV can be effectively *** paper proposes a model predictive control(MPC)-based torque distribution scheme,which minimizes the power consumption of 4WID-EVs while guaranteeing its tracking performance of planar *** incorporating the motor model considering iron losses,the optimal torque distribution can be achieved without an additional torque ***,for this reason,the proposed control scheme is computationally efficient,since the power consumption term to be optimized,which is expressed as the product of the motor voltages and currents,is much simpler than that derived from the efficiency *** reasonable simplification and linearization,the MPC problem is converted to a quadratic programming problem,which can be solved *** simulation results in MATLAB and CarSim co-simulation environments demonstrate that the proposed scheme effectively reduces power consumption with guaranteed tracking performance.

关键词： four-wheel independently driven electric vehicles Model predictive control Motor models Iron losses

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