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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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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-deep hole blastingin infinite rock mass for continuous charge and divided charge in blasting by using the large-scaleThe 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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Introduction Engineering of Bay Scallop and Its Comprehensive Effects

Zhang Fusui,He Yichao,Yang Hongsheng

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 30-35

Abstract:

In this paper, the social and academic background of introducing the bay scallop Argopecten ir-radianslate 1970s, to relieve the decline in Bohai Sea and Huanghai Sea mariculture industry, the U.S. bay scallopThe bay scallop transplants in the South China Sea and East China Sea also showed satisfactory resultsThe restoration of germplasm to cultured stock of bay scallop brought about the sustainable developmentof the scallop culture industry.

Keywords： bay scallop     introduction engineering    

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Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 372-375 doi: 10.1007/s11705-010-0570-1

Abstract: Calcium carbide was successfully synthesized by carbothermal reduction of lime with coke at 1973 K for 1.5 h. The effect of potassium carbonate as additive on the composition and morphology of the product was investigated using X-ray diffraction and scanning electron microscope. Addition of potassium carbonate increased the yield of calcium carbide. The sample in the presence of potassium carbonate generated acetylene gas of 168.3 L/kg, which was 10% higher than that in the absence of potassium carbonate. This result confirmed the catalytic effect of potassium carbonate on the synthesis of calcium carbide. A possible mechanism of the above effects was that the additive, which was melted at the reduction temperature, dissolved CaO and so promoted the contact between CaO and carbon, which was essential for the solid-solid reaction to form calcium carbide.

Keywords： calcium carbide     synthesis     catalysis    

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Development of an H reduction and moderate oxidation method for 3,5-dimethylpyridine hydrogenation in

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1807-1817 doi: 10.1007/s11705-022-2243-2

Abstract: Therefore, an in-situ H2 reduction and moderate oxidation method was developed to increaseconversion was obtained for the Ru/C-i1 catalyst prepared by in-situ H2 reduction and moderatesignificant decrease in the Ru/RuOx ratio of the in-situ H2 reduction and moderateThe developed in-situ H2 reduction and moderate oxidation method eliminated the step

Keywords： Ru/C catalyst     in-situ H2 reduction and moderate oxidation     in-situ reduction    

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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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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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Design，test and construction of the LKP1000-type movable shot blasting machine

Zhou Chang,Kan Rong ,Zhou Yi,Jiang Qin,Zhu Liang

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 84-88

Abstract:

Shot blasting process is a process which use of shot blasting materialIn order to make the working efficiency and process of shot blasting machine more optimization, thisthrough mathematical analysis and validation adjustment by experimental machine design new type of shot blastingThis research conduct optimize design and discussion for the size and position of key parts of shot blastingwidth reach 1 000 mm, and at the same time ensure best shot blasting effect.

Keywords： shot blasting machine     shot blasting apparatus     surface treatment     experimental machine     shot blastingwidth     shot blasting effect    

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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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Current Situation and Prospect of Precision Blasting

Xie Xianqi

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 14-19

Abstract:

Precision blasting is different from control blasting, was regarded as the symbol of development newstage of engineering blasting.With regard to the prospect of precision blasting, following aspects should be studied furthermore: (1) In order to provide theoretical basis of explosive energy release and quantitative blasting designNumerical simulation was an important method for engineering blasting scheme optimization and blasting

Keywords： Precision blasting     current situation     information technology     standardization     prospect    

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New technology of double-pipe protecting borehole wall blasting

Pu Chuanjin,Xiao Zhengxue,Zhang Zhicheng,Hao Yafei

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 88-92

Abstract:

Double-pipe protecting borehole wall balsting,a new control blastingand directional fracture controlled blasting.The characteristics of the new blasting technology, matching sets and explosion mechanism are detailedlyintroduced in the paper.The results of experiment on single borehole model blasting and tunnel diggingtesting indicate that it has very good blasting effect.

Keywords： blasting engineering     double-pipe protecting borehole wall balasting sets     blasting mechanism     dynamic    

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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 inproblems 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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Key technologies of precision demolition blasting of ultra-long urban viaduct in complicated surroundings

Xie Xianqi,Jia Yongsheng,Yao Yingkang,Sun Jinshan,Wu Xinxia,Liu Changbang

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 65-71

Abstract:

Key technologies of precision blasting were put forward based on characteristics of urban viaductblasting demolition in complicated surroundings.and sequenced collapsed dynamics model were established for quantitative blasting design.Technologies of water pressure blasting were applied in multi-cell box girder fragmentation.The rationality of blasting scheme and parameters were validated by physical model test.

Keywords： viaduct     blasting demolition     precision blasting     instability model     initiation network     adverse effects control    

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Forecast and Measurements for Reduction of Dust in Demolition Blasting

Zheng Bingxu,Wei Xiaolin

Strategic Study of CAE 2002, Volume 4, Issue 8,   Pages 69-73

Abstract:

A series of technical measurements for dust-laying in demolition blasting of building of a sport center

Keywords： demolition blasting     dust forecasting     reducing dust     high pressure sprinking water film     environment protection    

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Al2O3 and CeO2-promoted MgO sorbents for CO2 capture at moderate

Huimei Yu, Xiaoxing Wang, Zhu Shu, Mamoru Fujii, Chunshan Song

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 83-93 doi: 10.1007/s11705-017-1691-6

Abstract: A series of Al O and CeO modified MgO sorbents was prepared and studied for CO sorption at moderate

Keywords： CO2 capture     MgO sorbents     Al2O3     CeO2     flue gas    

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Title Author Date Type Operation

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

Zhao Yanwei,He Dongmei,Li Xianglong,Liu Junxuan

Journal Article

Numerical simulation of blasting effect with divided charge structure

Hu Tao ,Li Xianglong,Guan Si ,He Lihua

Journal Article

Introduction Engineering of Bay Scallop and Its Comprehensive Effects

Zhang Fusui,He Yichao,Yang Hongsheng

Journal Article

Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Journal Article

Development of an H reduction and moderate oxidation method for 3,5-dimethylpyridine hydrogenation in

Journal Article

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

Journal Article

Progresses in Explosive Materials and Engineering Blasting

Wang Xuguang

Journal Article

Design，test and construction of the LKP1000-type movable shot blasting machine

Zhou Chang,Kan Rong ,Zhou Yi,Jiang Qin,Zhu Liang

Journal Article

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

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Journal Article

Current Situation and Prospect of Precision Blasting

Xie Xianqi

Journal Article

New technology of double-pipe protecting borehole wall blasting

Pu Chuanjin,Xiao Zhengxue,Zhang Zhicheng,Hao Yafei

Journal Article

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

Fang Junbo

Journal Article

Key technologies of precision demolition blasting of ultra-long urban viaduct in complicated surroundings

Xie Xianqi,Jia Yongsheng,Yao Yingkang,Sun Jinshan,Wu Xinxia,Liu Changbang

Journal Article

Forecast and Measurements for Reduction of Dust in Demolition Blasting

Zheng Bingxu,Wei Xiaolin

Journal Article

Al2O3 and CeO2-promoted MgO sorbents for CO2 capture at moderate

Huimei Yu, Xiaoxing Wang, Zhu Shu, Mamoru Fujii, Chunshan Song

Journal Article