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Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Strategic Study of CAE 2009, Volume 11, Issue 2,   Pages 33-35

Abstract: justify;">Stress distribution in the third subsidence belt is presented , with great amounts of data on hydraulicfracture orientation obtained from monitoring hydraulic fracturing , and the direction of the maximumThe monitoring data implies that the tectonic stress direction in third subsidence belt is the combined

Keywords： hydraulic fracturing monitoring with micro- seismics     third subsidence belt     direction of maximumprinciplestress     hydraulic fracturing treatment    

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Microseismic monitoring technology

Tang Chunhua,Gu Guangqing

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 95-99

Abstract:

Microseismic (MS) monitoring is a hot topic in the applied geophysicsoptimal sensors, array design, digital-signal processing, event location, velocity calibration, and monitoring

Keywords： microseismic monitoring     hydraulic fracturing     oil and natural gas     SNR (signal to noise ratio)     event    

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Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 18-32 doi: 10.1007/s11465-017-0410-9

Abstract: The miniaturization of devices in different fields requires production of micro- and nano-scale componentsThis paper reviewed the recent advances in micro- and nano-machining technologies, including micro-cutting, micro-electrical-discharge machining, laser micro-machining, and focused ion beam machining.

Keywords： micro machining     cutting     electro discharge machining (EDM)     laser machining     focused ion beam (FIB)    

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Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 937-947 doi: 10.1007/s11709-021-0754-4

Abstract: First, an analytical solution for fracturing pressure in two different concentric regions of soil wasThen, several triaxial hydraulic fracturing tests were carried out to validate the analytical solutionFirst, there is a linear relationship between the fracturing pressure and confining pressure in concentricthe internal-layer soil is softer than the external-layer soil, the presence of internal soil on the fracturingMoreover, the influence of strength distinction between the two layers on the fracturing pressure is

Keywords： hydraulic fracturing pressure     layered     cavity expansion theory     triaxial fracturing test     cohesive soil    

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Occurrence and distribution of micro- and mesoplastics in the high-latitude nature reserve, northern

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1534-7

Abstract:

• The first study on micro(meso)plastics (MMPs) in the Liaohe River

Keywords： Microplastics     Mesoplastics     Water     Sediment     Characteristic     Risk Assessment    

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Strengthening of polysulfone membranes using hybrid mixtures of micro- and nano-scale modifiers

Peyman P. Selakjani, Majid Peyravi, Mohsen Jahanshahi, Hamzeh Hoseinpour, Ali S. Rad, Soodabeh Khalili

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 174-183 doi: 10.1007/s11705-017-1670-y

Abstract: Polysulfone (PSf) membranes were modified by either a new organic modifier (sulfonated poly(ether sulfide sulfone), SPESS) or a traditional modifier (rice hulk). These membranes were further reinforced with either multi-walled carbon nanotubes (MWCNTs) or silica nanoparticles. Having a dye rejection of 98.46%, the reinforced membranes increased more than 50% in strength but no change in solution flux was observed. The morphological and roughness studies were conducted using scanning electron microscopy and atomic force microscopy. Moreover, the PSF membranes were also characterized by differential scanning calorimetry. Modifying the membranes with organic modifier or nanofiller increases the glass transition temperature ( ). The highest and strength were observed for the PSf-SPESS-MWCNT membrane. SPESS decreases surface roughness but MWCNT increases roughness on the nanoscale. All membranes show a bimodal pore size distribution, whereas the PSf-SPESS-MWCNT membrane exhibits a relatively uniform distribution of macroscopic and microscopic pores.

Keywords： polysulfone membrane     mechanical properties     micro- and nano-modification     binary and ternary system     dye    

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Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 333-345 doi: 10.1007/s11709-021-0718-8

Abstract: Hydraulic fracturing may occur and cause a significant decrease in the support pressure if the slurryPreventing the occurrence of hydraulic fracturing in a slurry shield requires investigating the effectsof related influencing factors on the hydraulic fracturing pressure and fracture pattern.In this study, a hydraulic fracturing apparatus was developed to test the slurry-induced fracturing ofThe unconfined compressive strength of soil can reflect its ability to resist fracturing failure.

Keywords： slurry shield tunneling     hydraulic fracturing test     fracturing pressure     fracture dip     unconfined compressive    

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Application of artificial fracturing for low permeable reservoir in Xianhe region

Xiao Shuming,Lv Zhiqiang,Guo Zhihua,Liu Xueqing

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 65-69

Abstract: the characteristics of low permeability and small porosity of high pressure low permeable reservoir, fracturingSince 2008, 79 fracturing mapping have been performed successfully in Xianhe region, which offers great

Keywords： fracturing mapping     low permeability     hydraulic fracturing    

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Long-term behavior and safety assessment of Sance Rockfill Dam

Marta DOLEZALOVA, Ivo HLADIK

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 79-89 doi: 10.1007/s11709-010-0010-9

Abstract: Safety assessment of the 62 m high Sance Rockfill Dam based on long-term monitoring results and theirCalibrated 2D and 3D models fitting the monitoring results were applied for the safety assessment ofthe dam including slope stability analysis and estimation of the clay core cracking and hydraulic fracturing

Keywords： rockfill dam     path dependence     creep     calibration     cracking     hydraulic fracturing hazard    

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Application of hydraulic fracturing techniques for CBM wells in Qinshui coal field

ou Jinglong,Liu Zhidong,Li Jianzhong

Strategic Study of CAE 2011, Volume 13, Issue 1,   Pages 89-92

Abstract: "text-align: justify;">According to the CBM(coal bed methane) features and possible difficulties in fracturingtechniques, a new hydraulic fracturing method with casing injection, high output and activated water

Keywords： CBM(coal bed methane)     natural joint     adsorption     hydraulic fracturing    

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Distributed monitoring and diagnosis system for hydraulic system of construction machinery

Xiaohu CHEN, Wenfeng WU, Hangong WANG, Yongtao ZHOU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 106-110 doi: 10.1007/s11465-009-0089-7

Abstract: This paper mainly presents a distributed monitoring and diagnosis system for the hydraulic system ofThe hardware of the distributed condition monitoring and fault diagnosis system is designed.The experiments and applications indicate that the distributed condition monitoring and fault diagnosissystem can effectively realize its function of real-time online condition monitoring and fault diagnosisfor the hydraulic system of construction machinery.

Keywords： construction machinery     hydraulic system     distributed condition monitoring     controller area net (CAN) field    

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Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

Li Mengxi,Zhang Cong

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 16-19

Abstract:

This paper describes horizontal effects of CBM (coal bed methane)fracturing, obtained from microseismic monitoring in Qinshui Basin.fractures have adverse effects, including reduced production flow rate, depletion, and watering during fracturingThis discovery shows that the horizontal compression of fracturing could have adverse impact on productionof adjacent wells, and fracturing designer should be aware of it.

Keywords： coal bed methane     fracture     hydraulic fracturing    

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Micro-hydromechanical deep drawing of metal cups with hydraulic pressure effects

Liang LUO, Zhengyi JIANG, Dongbin WEI, Xiaogang WANG, Cunlong ZHOU, Qingxue HUANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 66-73 doi: 10.1007/s11465-018-0468-z

Abstract:

Micro-metal products have recently enjoyed high demand.Micro-hydromechanical deep drawing (MHDD), a typical microforming method, has been developed to takeadvantage of hydraulic force.With reduced dimensions, the hydraulic pressure development changes; accordingly, the lubrication conditionHigh hydraulic pressure can increase the maximum drawing ratio (drawn cup height), whereas the surface

Keywords： micro-hydromechanical deep drawing     microforming     size effects     lubrication     Voronoi    

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Monitoring and Analyzing on Fracturing Fracture from Horizontal Well

Liu Jianzhong,Zhang Chuanxu,Zhao Yanbo,Jiang Yushuang,Song Jianxing

Strategic Study of CAE 2008, Volume 10, Issue 4,   Pages 60-64

Abstract: The microseism monitoring of man-made fracture can understand the shape and orientation of fracturing

Keywords： horizontal well     fracturing fracture     microseism monitor    

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Microseismic monitoring technology development direction and application

Liu Jianzhong,Tang Chunhua,Zuo Jianjun

Strategic Study of CAE 2013, Volume 15, Issue 10,   Pages 54-58

Abstract:

This paper discussed the development direction of microseismic monitoringtechnology, pointed out that improve the quality of microseismic monitoring system, reduce the front, and increase the number of microseismic monitoring stations so as to obtain more information that canAbove are important directions of microseismic monitoring technology development.and safety prediction of mine, reservoir besides oilfield fracturing and water monitoring.

Keywords： microseismic monitoring     seismic prospecting     fracturing monitoring     water monitoring    

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Title Author Date Type Operation

Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Journal Article

Microseismic monitoring technology

Tang Chunhua,Gu Guangqing

Journal Article

Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Journal Article

Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Journal Article

Occurrence and distribution of micro- and mesoplastics in the high-latitude nature reserve, northern

Journal Article

Strengthening of polysulfone membranes using hybrid mixtures of micro- and nano-scale modifiers

Peyman P. Selakjani, Majid Peyravi, Mohsen Jahanshahi, Hamzeh Hoseinpour, Ali S. Rad, Soodabeh Khalili

Journal Article

Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Journal Article

Application of artificial fracturing for low permeable reservoir in Xianhe region

Xiao Shuming,Lv Zhiqiang,Guo Zhihua,Liu Xueqing

Journal Article

Long-term behavior and safety assessment of Sance Rockfill Dam

Marta DOLEZALOVA, Ivo HLADIK

Journal Article

Application of hydraulic fracturing techniques for CBM wells in Qinshui coal field

ou Jinglong,Liu Zhidong,Li Jianzhong

Journal Article

Distributed monitoring and diagnosis system for hydraulic system of construction machinery

Xiaohu CHEN, Wenfeng WU, Hangong WANG, Yongtao ZHOU,

Journal Article

Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

Li Mengxi,Zhang Cong

Journal Article

Micro-hydromechanical deep drawing of metal cups with hydraulic pressure effects

Liang LUO, Zhengyi JIANG, Dongbin WEI, Xiaogang WANG, Cunlong ZHOU, Qingxue HUANG

Journal Article

Monitoring and Analyzing on Fracturing Fracture from Horizontal Well

Liu Jianzhong,Zhang Chuanxu,Zhao Yanbo,Jiang Yushuang,Song Jianxing

Journal Article

Microseismic monitoring technology development direction and application

Liu Jianzhong,Tang Chunhua,Zuo Jianjun

Journal Article