Results 1 to 10 of about 249,833 (291)

Preparation and characterization of typical potassium salt dry water and its fire extinguishing performance [PDF]

Scientific Reports
To develop an efficient and environmentally friendly fire extinguishing agent, hydrophobic SiO2 and deionized water were dispersed in a high-speed disperser for a period to form dry water.
Yang Yaoyong, Wang Quan, Yao Yingkang, Xu Jianshe, Feng Dingyu   +4 more
doaj   +2 more sources

Observation and prediction of bottom collapse and middle break phenomena in the blasting demolition of high chimneys [PDF]

Scientific Reports
In order to solve the key problems affecting the safety of the project, such as the collapse of the support part and break in the air of the reinforced concrete chimney during the blasting demolition, this paper carried out systematic monitoring and ...
Qiang Li, Jinshan Sun, Yongsheng Jia, Xiaowu Huang, Yingkang Yao, Yuqing Xia   +5 more
doaj   +2 more sources

Study on the effects of coal powder water slurry on the performance of bulk emulsion explosives [PDF]

Scientific Reports
To improve the performance of bulk emulsion explosives, a coal powder water slurry (CPWS) was prepared and introduced to partially replace ammonium nitrate.
Yingjian Cao, Quan Wang, Yingkang Yao, Jiabao Zhang, Fengqi Wang, Zhiyu Liu, Kaiyan Lu, Yaoyong Yang, Rui Li, Xiaomeng Xu   +9 more
doaj   +2 more sources

Evaluation of the impact of blast damage on tunnel surrounding rock induced by C-type cumulative tube cone angle [PDF]

Scientific Reports
Over-excavation and under-excavation are common issues in tunnel construction using the drilling and blasting method. In some cases, traditional blasting techniques may fail to achieve the desired results.
Jian Guo, Honglu Fei, Hainan Ji, Shijie Bao, Gang Hu, Yu Yan   +5 more
doaj   +2 more sources

Intelligent Debonding Detection in GFRP Rock Bolts via Piezoelectric Time Reversal and CNN-SVM Model [PDF]

Sensors
To address the challenge of detecting debonding damage in glass-fiber-reinforced polymer (GFRP) rock bolt anchorage structures, this study proposes a time reversal detection method based on piezoelectric sensing and a Convolutional Neural Network–Support
Zhenyu Zhang, Yang Liu, Yixuan Bai, Jianfeng Si, Zhaolong Zhang, Shengwu Tu   +5 more
doaj   +2 more sources

A strategy to introduce multi-gradient structures into iron by explosive shock wave processing

Journal of Materials Research and Technology, 2023
A strategy combining shock-induced phase transition, twins, and dislocations to produce a multi-gradient structure in Fe is designed and proposed by the explosive processing method. A specific emulsion explosive is designed to introduce gradient pressure
Jianian Hu, Yongsheng Jia, Xiang Chen, Jian Zhang, Quanming Xie, Yingkang Yao   +5 more
doaj   +1 more source

Some results of the study of rock properties of the Sulukta deposit [PDF]

E3S Web of Conferences, 2023
This article presents the results of research into the properties of physical and mechanical properties of rocks and their influence on the conditions of their occurrence in the coal-bearing massif, depending on the geological structure of a particular ...
Kazatov Urmat, Raimbekov Bakyt, Bekbosunov Rasul, Ashirbaev Bekbolot, Abdiev Arstanbek, Orokov Azizbek   +5 more
doaj   +1 more source

BLAST++: BLASTing queries in batches [PDF]

Bioinformatics, 2003
Abstract Summary: BLAST++ is a tool that is integrated with NCBI BLAST, allowing multiple, say K, queries to be searched against a database concurrently. The results obtained by BLAST++ are identical to that obtained by executing BLAST on each of the K queries, but BLAST++ completes the processing in a much shorter time ...
Wang, H., Ooi, B.C., Tan, K.-L., Ong, T.-H., Zhou, L.   +4 more
openaire   +2 more sources

Study on blast-induced ground vibration velocity limits for slope rock masses

Frontiers in Earth Science, 2023
Seismic waves induced by blasting can cause damage to slope rock masses and thus lower the stability of the slope. The vibration standards of many countries do not specify the allowable blasting vibration velocity for slope rock masses.
Jinshan Sun, Jinshan Sun, Yongsheng Jia, Yongsheng Jia, Zhen Zhang, Zhen Zhang, Yingkang Yao, Yingkang Yao   +7 more
doaj   +1 more source

PPV Criterion of a Defect Rock Slope under Blasting SV-Waves

Shock and Vibration, 2022
In order to estimate the stability of slopes with geological defects during blasting excavations, the dynamic responses of a rock slope with a fault subjected to blasting seismic waves are studied. The SV-component of blasting seismic waves is considered
Shiwei Lu, Yingkang Yao, Yongsheng Jia, Jinshan Sun, Zhen Zhang   +4 more
doaj   +1 more source