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The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Strategic Study of CAE 2006, Volume 8, Issue 3,   Pages 70-74

Abstract:

The vibration testing analysis of blasting in Tai-Chang freeway show that it is chamber & deep-holepre-splitting blasting that can strikingly drop the seismic effect of chamber blasting, so it effectivelysolves some problems of slope stability, slope quality and safety of building & structure that blastingThe improved technique of chamber blasting is beneficial to extending its scope of application so that

Keywords： chamber blasting     deep-hole pre-splitting blasting     blasting vibration     vibration testing analysis    

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Study on Blasting Fragmentation Control for Moderate Deep Hole in Underground Mine

Zhao Yanwei,He Dongmei,Li Xianglong,Liu Junxuan

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 48-52

Abstract:

The scallop moderate longhole blasting mining method in Da Hong-shanIn order to realize the mine production efficient development, the circular moderate longhole blastingThe test results show that circular hole blasting can reduce the block rate is reduced to 10.3%, andthe traditional scallop moderate longhole blasting mining compared with the average lump ore decreasedof detonators, the efficiency of drawing and at the same time, reduce the mining cost ,achieved good blasting

Keywords： The scallop moderate longhole blasting     the circular moderate longhole blasting     lump ore     blasting effect    

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Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 58-64

Abstract:

Reduce the blasting vibration is important for blasting excavation in, in order to insure the safety of the upper buildings, technologies of parallel cut with big empty holeproblems of shock conducting tube detonator delay number difficulty to meet large cross-section tunnel blasting

Keywords： blasting design     parallel cut     big empty hole     delay- time initiation     short- hole blasting    

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Numerical simulation of blasting effect with divided charge structure

Hu Tao ,Li Xianglong,Guan Si ,He Lihua

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 36-41

Abstract: numerically simulates the stress development and generates a three-dimensional model of the medium-deephole blasting in infinite rock mass for continuous charge and divided charge in blasting by using theThe difference of the decreasing rate in Von Mises effective stress of blasting, element effective stressIt is shown that divided charge could greatly improve the blasting effect by engineering blasting practice

Keywords： Moderate long hole bench blasting     Divided charge     ANSYS/LS-DYNA     Numerical simulation    

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Study on Blasting at Ever-frost Ground in Qinghai-Tibet Plateau

He Guangyi

Strategic Study of CAE 2001, Volume 3, Issue 6,   Pages 57-64

Abstract:

The paper introduces the research achievements on blasting while the writer participated the railwayIt describes the blasting methods and technology, and practicable cumulative blasting technology according

Keywords： ever-frost ground     cutting     foundation pit     drilling hole     cumulative shell     cumulative blasting    

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The analysis & effect of excavation of rock by controlled blastingin the Olympic Games flying saucer stadium

Shen Zhenyu,Zhang Pengjun,Wang Xuguang,Yu Yalun

Strategic Study of CAE 2009, Volume 11, Issue 11,   Pages 13-16

Abstract:

The application of the technique of the excavation by long-hole typeblasting in the Olympic Games flying-saucer stadium was introduced in the article.In the complicated surroundings,some techniques were adopted such as out-hole millisecond delay blasting, underload, the longer length of stemming to control the danger of blasting vibration and fly rock,atthe same time,in view of the complex geological condition, presplitting blasting was adopted so that

Keywords： excavation of rock     long-hole type blasting     presplitting blasting     overbreak rock    

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Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1718-1727 doi: 10.1007/s11705-023-2319-7

Abstract: In recent years, organic photocatalyst under visible-light absorption has shown significant potential for solving environmental problems. However, it is still a great challenge for constructing a highly active organic photocatalyst due to the low separation efficiency of photogenerated carriers. Herein, an effective and robust photocatalyst perylene-3,4,9,10-tetracarboxylic diamide/boron nitride quantum dots (PDI/BNQDs), consisting of self-assemble PDI with π–π stacking structure and BNQDs, has been constructed and researched under visible light irradiation. The PDI/BNQDs composite gradually increases organic pollutant photodegradation with the loading amount of BNQDs. With 10 mL of BNQDs solution added (PDI/BNQDs-10), the organic pollutant photodegradation performance reaches a maximum, about 6.16 times higher with methylene blue and 1.68 times higher with ciprofloxacin than that of pure PDI supramolecular. The enhancement is attributed to improved separation of photogenerated carriers from self-assembled PDI by BNQDs due to their preeminent ability to extract holes. This work is significant for the supplement of PDI supramolecular composite materials. We believe that this photocatalytic design is capable of expanding organic semiconductors’ potential for their applications in photocatalysis.

Keywords： PDI     boron nitride     quantum dots     photocatalysis     hole transfer    

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Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 710-720 doi: 10.1007/s11708-021-0764-x

Abstract: InP shows a very high efficiency for solar light to electricity conversion in solar cell and may present an expectation property in photocatalytic hydrogen evolution. However, it suffers serious corrosion in water dispersion. In this paper, it is demonstrated that the stability and activity of the InP-based catalyst are effectively enhanced by applying an anti-corrosion SnO layer and In(OH)3 transition layer, which reduces the crystal mismatch between SnO and InP and increases charge transfer. The obtained Pt/SnO/In(OH)3/InP exhibits a hydrogen production rate of 144.42 µmol/g in 3 h under visible light illumination in multi-cycle tests without remarkable decay, 123 times higher than that of naked In(OH)3/InP without any electron donor under visible irradiation.

Keywords： SnO/In(OH)3/InP photocatalyst     enhanced activity and stability for water splitting     corrosion    

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Safety assessment for buried drainage box culvert under influence of underground connected aisle blasting

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 191-204 doi: 10.1007/s11709-022-0906-1

Abstract: Blasting engineering in complex urban environments is considered to influence the safety and stabilityTherefore, field blasting and vibration tests were performed on the blasting engineering of the Wuhanused to analyze the dynamic response characteristics of an underground drainage box culvert during the blastingThe vibration response evolution law of the buried drainage box culvert under blasting vibration was

Keywords： drainage box culvert     underpass blasting     dynamic response     numerical simulation     safety assessment    

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Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

Frontiers in Energy doi: 10.1007/s11708-023-0870-z

Abstract: Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

Keywords： threshold solar water     splitting hydrogen III    

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Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 296-300 doi: 10.1007/s11465-011-0236-9

Abstract: conformal mapping, the problem of two non-symmetrical collinear cracks emanating from an elliptical holeelectric loading and anti-plane mechanical loading, which allowed us to take the electric field inside the hole

Keywords： piezoelectric materials     elliptical hole     semi-permeable crack     energy release rate     analytic solution    

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Deep Thoughts on History of Gas Turbine Aeroengine

Wu Daguan

Strategic Study of CAE 2000, Volume 2, Issue 1,   Pages 77-80

Abstract: The fact has proved that attaching importance to the fundamental pre-research on aeroengine is one ofTherefore measures on how to attach importance to the pre-research to ensure aeroengine industrial prosperity

Keywords： gas turbine aeroengine     basic reseach     pre-research    

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Progresses in Explosive Materials and Engineering Blasting

Wang Xuguang

Strategic Study of CAE 2002, Volume 4, Issue 4,   Pages 36-40

Abstract:

The progresses in explosive materials and engineering blasting in the recent five years at home and

Keywords： explosive     blasting accessories     blasting    

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An overview and recent advances in electrocatalysts for direct seawater splitting

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1408-1426 doi: 10.1007/s11705-021-2102-6

Abstract: The direct seawater splitting is economical and eco-friendly, but the key challenges in seawater, especiallyThe development of earth-abundant electrocatalysts toward direct seawater splitting has emerged as aelectrolysis and then focuses on the strategies for rational design of electrocatalysts toward direct seawater splittingof improved electrocatalysts to solve emerging challenges and further development of direct seawater splitting

Keywords： seawater splitting     electrocatalysts     oxygen evolution reaction     hydrogen evolution reaction     chlorine    

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Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

Frontiers of Structural and Civil Engineering   Pages 1341-1356 doi: 10.1007/s11709-023-0988-4

Abstract: This study empirically investigated the influence of freeze–thaw cycling on the dynamic splitting tensileBrazilian disc splitting tests were conducted using four loading rates (0.002, 0.02, 0.2, and 2 mm/s)The dynamic splitting tensile damage characteristics were evaluated using acoustic emission (AE) parameter

Keywords： steel fiber reinforced concrete     freeze–thaw cycling     Brazilian disc splitting test     acoustic emissiontechnique     dynamic splitting tensile acoustic emission properties    

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Title Author Date Type Operation

The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Journal Article

Study on Blasting Fragmentation Control for Moderate Deep Hole in Underground Mine

Zhao Yanwei,He Dongmei,Li Xianglong,Liu Junxuan

Journal Article

Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Journal Article

Numerical simulation of blasting effect with divided charge structure

Hu Tao ,Li Xianglong,Guan Si ,He Lihua

Journal Article

Study on Blasting at Ever-frost Ground in Qinghai-Tibet Plateau

He Guangyi

Journal Article

The analysis & effect of excavation of rock by controlled blastingin the Olympic Games flying saucer stadium

Shen Zhenyu,Zhang Pengjun,Wang Xuguang,Yu Yalun

Journal Article

Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

Journal Article

Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

Journal Article

Safety assessment for buried drainage box culvert under influence of underground connected aisle blasting

Journal Article

Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

Journal Article

Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Journal Article

Deep Thoughts on History of Gas Turbine Aeroengine

Wu Daguan

Journal Article

Progresses in Explosive Materials and Engineering Blasting

Wang Xuguang

Journal Article

An overview and recent advances in electrocatalysts for direct seawater splitting

Journal Article

Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

Journal Article