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Monitoring and analysis to shock in water aboutunderwater drilling blasting

Ke Songlin,Li Linna,Si Jianfeng,Zhong Dongwang

Strategic Study of CAE 2014, Volume 16, Issue 11, Pages 103-106

Abstract:

Taking underwater reef blasting in Gulei sea channel of Xiamen Port asan example, the forming characteristic of shock wave in water for underwater drilling blasting is analyzed

Keywords： Underwater drilling blasting Shock wave in water Pressure characteristics

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Study on shaft drilling and blasting construction risk analysis and countermeasures of Bohai Strait tunnel

Zhang Wenxin and Zou Chong

Strategic Study of CAE 2013, Volume 15, Issue 12, Pages 101-106

Abstract:

In view of the shaft construction risk analysis of Bohai Strait tunnel, this paper determines risks during construction. Combining the risk weight analysis ranking,the sequence in turn from low to high is supporting structure failure risk, natural disaster risk and shaft excavation risk. Through risk assessment,we determine that the risk of water inrush and mud outburst is the key risk. Considering the influences of key risk and other risks on the shaft construction,we put forward response measures about shaft construction risk of Bohai Stiait tunnel from the geological forecast,shaft hoisting equipment selection and hoisting process control, shaft excavation risk control, natural disaster risk prevention, shaft supporting structure for quality control and the establishment of the shaft system construction,which provide guidance for the subsequent construction.

Keywords： strait tunnel shaft construction drilling and blasting method risk analysis response measures

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A new method of rock-explosive matching in drilling and blasting based on reasonable control of the crushed

LengZhendong,LuWenbo,YanPeng, ChenMing,Hu Yingguo

Strategic Study of CAE 2014, Volume 16, Issue 11, Pages 28-35

Abstract: Starting from the blasting breakage mechanism, a new method of rock-explosive matching in drilling andblasting is proposed.This method can intuitively reflect the blasting fragmentation effect and energy effective utilization

Keywords： drilling and blasting crushed zone rock-explosive matching acoustic impedance matching

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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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Investigation on drilling-grinding of CFRP

Yanming QUAN, Wenwang ZHONG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 60-63 doi: 10.1007/s11465-009-0008-y

Abstract: Conventional drills have a very short life in the drilling of this kind of composites and the qualitymechanism of the two kinds of diamond tools is not like the cutting effect of the conventional solid twist drilling

Keywords： composites drilling-grinding cemented/plated diamond tool life machined quality

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Turbidity-adaptive underwater image enhancement method using image fusion

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-021-0669-8

Abstract: Clear, correct imaging is a prerequisite for underwater operations.Most of the existing underwater imaging methods focus on relatively clear underwater environment, itis uncertain that if those methods can work well in turbid and dynamic underwater environments.In this paper, we propose a turbidity-adaptive underwater image enhancement method.The proposed method is verified by an underwater image dataset captured in real underwater environment

Keywords： turbidity underwater image enhancement image fusion underwater robots visibility

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Calculation and research on deepwater drilling riser flexural equation and natural frequency

Jiang Wei

Strategic Study of CAE 2011, Volume 13, Issue 5, Pages 66-73

Abstract: justify;">Flexural equation was established in this paper, which was based on application of deepwater drillingTherefore, simple calculation method for natural frequency of drilling riser was achieved.Free-hinged beam was taken as constraint condition of flexural equation combined with drilling stringPurpose of research was to provide reasonable design and selection for deepwater drilling riser, andprovide a more efficient and applied method, which would show guiding significance for deepwater drilling

Keywords： deepwater drilling drilling riser flexural equation natural frequency shape function

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The optimum drilling technique in the northeast area of Sichuan

Han Laiju,Ma Guangjun,Zhao Jinhai

Strategic Study of CAE 2010, Volume 12, Issue 10, Pages 44-49

Abstract: complicated, which causes many complex cases and accidents like lost circulation and collapse when drillingROP was slow and drilling cycle was long.deepwell in south China, through introducing and developing new technology and new tools, like gas drillingand vertical drilling equipments, combined with existing techniques such as underbalanced drilling,compound drilling, optimum drilling technique system fit for complicated deepwell in northeast area of

Keywords： northeast area of Sichuan optimum drilling gas drilling vertical drilling MPD with lower-densitydrilling fluid bit optimization compound drilling

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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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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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Development Path of Offshore Drilling Equipment in China

Liu Jian

Strategic Study of CAE 2020, Volume 22, Issue 6, Pages 40-48 doi: 10.15302/J-SSCAE-2020.06.006

Abstract:

China has made achievements in offshore drilling equipment, and it cannow develop the shallow-water drilling rigs independently.However, as far as deep-water drilling equipment is concerned, there still exists a big gap between ChinaTo accelerate the development of China’s offshore drilling equipment, this study first analyzesmachine, deep-water drilling machine, and new-type marine drilling machine; it then summarizes the development

Keywords： offshore drilling rig deep-water drilling rig development of equipment test sea test

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Effects of delamination in drilling glass/polyester composite

Mehdi GANJIANI, Majid SAFARABADI, Nabi MEHRI-KHANSARI, Hossein ORUJI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2, Pages 552-567 doi: 10.1007/s11709-021-0699-7

Abstract: Considering failures during machinery processes such as drilling, a precautionary analysis involvingeffect of mode delamination and corresponding interlaminar crack propagation was considered during the drilling

Keywords： delamination VCCT ARCAN specimen drilling mode II

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Design and construction technology of underwater tunnel

Wang Mengshu

Strategic Study of CAE 2009, Volume 11, Issue 7, Pages 4-10

Abstract: text-align: justify;">It is briefly introduced that when passing over or crossing rivers, lakes and seas, underwaterof design and construction, key construction technology and frequently-used construction method of underwater

Keywords： underwater tunnel design construction

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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