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Influence of coal mining on regional karst groundwater system:a case study in West Mountain area of taiyuan City,northern China

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Influence of coal mining on regional karst groundwater syste...

DESIGN OF LAND SUBSIDENCE MONITORING NETWORK:A CASE STUDY AT taiyuan,SHANXI,CHINA

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： Xiaojuan Qiao·Guomin Li·Ming Li·Jinlong Zhou·Jie Du Chengyuan Du Zhonghui Sun Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics,Chinese Academy of Sciences,P.O.Box 9825,Beijing 100029,China taiyuan Water Resources Bureau,taiyuan, Shanxi Province 030002,China

Karstic limestone formations in the West Mountain area are important water resources for taiyuan City in Shanxi Province,northern China,which is also known for its large-scale coal mining *** this study area,groundwater is not only exploited for water supply purposes but also drained because of coal mining. The process of coal mining changes both the quantity of the karst springs and the quality of karst groundwater system because of overexploitation and *** this paper,the influence of coal mining on the groundwater is analyzed from a qualitative and quantitative perspective. The hydrochemical analysis results reflect the relationship of the recharge,runoff,and drainage;the features of the medium;and water-rock *** on a qualitative understanding of the geological deposition and characteristics of the groundwater flow system,three-dimensional groundwater flow models are established and applied to several scenarios to explore the quantitative influence and allow better protection of the groundwater environment and better utilization of water resources.

关键词： Hydrochemistry Three-dimensional models Coal mine Karst groundwater system taiyuan,China

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DESIGN OF LAND SUBSIDENCE MONITORING NETWORK:A CASE STUDY AT...

Recovery and chemical utilization of carbon dioxide from fossil－fuel burning industrial sources

第七届国际地面沉降学术研讨会

作者： Yan Shilong~(1 2) Guo Qinghai~1 Zhou Xinping~2 1 School of Environmental Studies China University of Geosciences Wuhan 430074 China 2 Geological Survey of Shanxi Province taiyuan Shanxi 030024 China

＜正＞Land subsidence occurred at taiyuan after the 1960s,with an affected area of about 548 *** biggest subsidence center is located at Wujiabao where the maximum accumulated settlement reached up to 2.96 m and the average subsidence rate was 63 mm/*** major characteristics of land subsidence in taiyuan are as follows:（1）Four centers of land subsidence were delineated,and the subsidence of each center is different from each other.（2）The subsidence rate has been increased from 1956 to 2000.（3）The distribution of the four subsidence centers is controlled evidently by local groundwater withdrawal and soil layer distribution. Further studies indicate that the groundwater withdrawal process is related to the formation and development of land subsidence,the distribution of groundwater depression cones well correspond to that of land subsidence centers,and the soil layer distribution has effects on the deviation of the subsidence center from the groundwater depression *** view of the characteristics of land subsidence,the following principles should be followed in designing the subsidence monitoring network:（1）the financial state of taiyuan City should be considered;（2）the important monitoring areas should be separated from the ordinary monitoring areas,being respectively in the center and the margin of each subsidence area;（3）the monitoring should be developed at different depths and the compression amount of each soil layer should be obtained;（4）the monitoring work should be *** to above principles,a leveling pillar and four layered mark boreholes were set up at Wujiabao where the land subsidence was the most serious,which can form the leveling network with the bedrock benchmark in ***,we have reselected the monitor wells from all existent wells to make groundwater level monitoring point corresponding with land subsidence monitoring ***,the matching water level monitoring boreholes to layered marks were constructed in Wuji

关键词： land Subsidence layered marks monitoring for soil layer deformation groundwater level monitoring taiyuan city

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Journal of Environmental Sciences 1995年第2期7卷 129-137页

作者： Yin Xiaolong (Department of Applied Chemistry,taiyuan University of Technology, taiyuan 030024 , China) China

Ｒｅｃｏｖｅｒｙａｎｄｃｈｅｍｉｃａｌｕｔｉｌｉｚａｔｉｏｎｏｆｃａｒｂｏｎｄｉｏｘｉｄｅｆｒｏｍｆｏｓｓｉｌ－ｆｕｅｌｂｕｒｎｉｎｇｉｎｄｕｓｔｒｉａｌｓｏｕｒｃｅｓＹｉｎＸｉａｏｌｏｎｇ（Ｄｅｐａｒｔｍｅｎｔｏｆ... 详细信息

Ｒｅｃｏｖｅｒｙａｎｄｃｈｅｍｉｃａｌｕｔｉｌｉｚａｔｉｏｎｏｆｃａｒｂｏｎｄｉｏｘｉｄｅｆｒｏｍｆｏｓｓｉｌ－ｆｕｅｌｂｕｒｎｉｎｇｉｎｄｕｓｔｒｉａｌｓｏｕｒｃｅｓＹｉｎＸｉａｏｌｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＣｈｅｍｉｓｔｒｙ，...

关键词： carbon dioxide fossil fuel global climate change greenhouse gas.

RESEARCH ON THE PERFORMANCE OF NEW TYPE OF PROPORTIONAL PESSURE AND FLOW CONTROL VALVE

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Chinese Journal of Mechanical Engineering 2003年第3期16卷 281-284页

作者： Quan LongMa JianWang YongjinInstitute of Mechatronics,taiyuan University of Technology,taiyuan 030024, China Institute of Mechatronics Taiyuan University of Technology Taiyuan 030024

A new closed loop flow controlling principle through correcting the valve'sopening area while load pressure is changing is carried out. Further more a principle using only oneproportional valve to compound control pressure and flow is suggested. By using very simpleproportional throttle valve in structure, the functions that five kinds of proportional valves orany two of them combined possess can be complimented. After analyzing, comparing, and testing thedynamic and static characteristics of valve with different controlling principles and main valvestructure styles, the optimized structure styles and control methods are achieved.

关键词： Electro-hydraulic proportional control Proportional flow valve Proportionalpressure valve Pressure and flow compound control

THE　ESTABLISHMENT　OF　CALCULATION　FORMULA　FOR　CASTING－ROLLING　FORCE　OF　VISCOUS　FLUID　AND　THE　INFLUENCE　OF　TECHNOLOGICAL　FACTORS

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中国有色金属学会会刊：英文版 1995年第3期5卷 101-104页

作者： Sun, Binyu Zhang, Hong Zhang, Xiaoping Shi, Rong (taiyuan Heavy Machinery Institute, taiyuan 030024) taiyuan Heavy Machinery Inst Taiyuan China

ＴＨＥＥＳＴＡＢＬＩＳＨＭＥＮＴＯＦＣＡＬＣＵＬＡＴＩＯＮＦＯＲＭＵＬＡＦＯＲＣＡＳＴＩＮＧ－ＲＯＬＬＩＮＧＦＯＲＣＥＯＦＶＩＳＣＯＵＳＦＬＵＩＤＡＮＤＴＨＥＩＮＦＬＵＥＮＣＥＯＦＴＥＣＨＮＯＬＯＧＩＣＡＬＦＡＣＴＯ... 详细信息

ＴＨＥＥＳＴＡＢＬＩＳＨＭＥＮＴＯＦＣＡＬＣＵＬＡＴＩＯＮＦＯＲＭＵＬＡＦＯＲＣＡＳＴＩＮＧ－ＲＯＬＬＩＮＧＦＯＲＣＥＯＦＶＩＳＣＯＵＳＦＬＵＩＤＡＮＤＴＨＥＩＮＦＬＵＥＮＣＥＯＦＴＥＣＨＮＯＬＯＧＩＣＡＬＦＡＣＴＯＲＳ￥Ｓｕｎ，Ｂｉｎｙｕ；Ｚｈａｎ...

关键词： casting-rolling force viscous fluid flow function

STUDY ON INJECTION AND IGNITION CONTROL OF GASOLINE ENGINE BASED ON BP NEURAL NETWORK

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Chinese Journal of Mechanical Engineering 2003年第4期16卷 441-444页

作者： Zhang Cuiping Yang QingfoCollege of Mechanical Engineering,taiyuan University of Technology,taiyuan 030024, China College of Mechanical Engineering Taiyuan University of Technology Taiyuan 030024

According to advantages of neural network and characteristics of operatingprocedures of engine, a new strategy is represented on the control of fuel injection and ignitiontiming of gasoline engine based on improved BP network algorithm. The optimum ignition advance angleand fuel injection pulse band of engine under different speed and load are tested for the samplestraining network, focusing on the study of the design method and procedure of BP neural network inengine injection and ignition control. The results show that artificial neural network technique canmeet the requirement of engine injection and ignition control. The method is feasible for improvingpower performance, economy and emission performances of gasoline engine.

关键词： Neural network BP algorithm Gasoline engine Control

A CATASTROPHE ANALYSIS ON THE STABILITY OF THE CRACK GROWTH IN THREE-POINT BENDING SPECIMENS

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Acta Mechanica Solida Sinica 1996年第2期9卷 179-183页

作者： Wei Demin Fan Xuejun, taiyuan Unversity of Technology, taiyuan 030024 taiyuan University of Technology Taiyuan 030024

This paper presents an attempt at the application of catastrophe theory to the stability analysis of J-controlled crack growth in three-point bending specimens. By introducing the solutions of J-integral in the completely yielding state for the ideal plastic material, the critical condition of losing stability for the crack propagation in the specimen is obtained, based on the cusp catastrophe theory. The process of the crack growth from geometrical sense is described.

关键词： crack growth stability cusp catastrophe J-integral three-point bending specimen

PREPARATION OF THE OPEN PORE ALUMINUM FOAMS USING INVESTMENT CASTING PROCESS

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Acta Metallurgica Sinica(English Letters) 2001年第1期14卷 27-32页

作者： L.C. Wang and F. Wang (taiyuan Heavy Machinery Institute, taiyuan 030024, China) taiyuan Heavy Machinery Inst. Taiyuan 030024 China

This paper briefly presents characteristics, application and development of the metallic foams. Sound specimen has been achieved with prepared foam aluminum by using investment casting process. The preparation of plaster prefabricated mould is one key in investment casting. Main composition, ingredient and affecting factors of plaster mould are also discussed and the vacuum-infiltrated shaping technique is found to be another important link. The penetration model and the affecting mechanism of the main parameters are also analyzed. As a result, the optimum values are determined.

关键词： Aluminum alloys Foamed products Foams Molds Plaster

Membrane Phospholipid Redistribution in Cytokinesis:A Theoretical Model

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Acta Biochimica et Biophysica Sinica 2005年第9期37卷 643-648页

作者： Mei-Wen AN Wen-Zhou WU Wei-Yi CHEN Institute of Applied Mechanics,taiyuan University of Technology,taiyuan 030024,China Institute of Applied Mechanics Taiyuan University of TechnologyTaiyuan 030024 China

In cell mitosis,cytokinesis is a major deformation process,during which the site of thecontractile ring is determined by the biochemical stimulus from asters of the mitotic apparatus,actin andmyosin assembly is related to the motion of membrane phospholipids,and local distribution and arrangementof the microfilament cytoskeleton are different at different cytokinesis *** on the Zinemanas-Nirmodel,a new model is proposed in this study to simulate the entire process by coupling the biochemicalstimulus with the mechanical *** were three assumptions in this model:the movements ofphospholipid proteins are driven by gradients of biochemical stimulus on the membrane surface;the localassembly of actin and myosin filament depends on the amount of phospholipid proteins at the same location;and the surface tension includes membrane tensions due to both the passive deformation of the membraneand the active contraction of actin filament,which is determined by microfilament redistribution *** model could explain the dynamic movement of microfilaments during cytokinesis andpredict cell *** calculated results from this model demonstrated that the reorientation ofphospholipid proteins and the redistribution and reorientation of microfilaments may play a crucial role in *** model may better represent the cytokinesis process by the introduction of biochemical stimulus.

关键词： cytokinesis biochemical stimulus phospholipid actomyosin microfilament