Results 31 to 40 of about 243,456 (174)

Blast vibration characteristics and its isolation scheme selection of existing tunnels in multi-arch tunnels without middle wall

Yantu gongcheng xuebao, 2023
In the blasting excavation of the following excavating tunnel, it is extremely important to ensure the blasting vibration safety of the existing excavated tunnel, as the traditional middle wall is cancelled in the new multi-arch tunnel and the ...
JIANG Wei 1, GAO Qidong 1, 2, WANG Yaqiong 1, YANG Yubo 1, FAN Yong 2, LENG Zhendong 3
doaj   +1 more source

FEATURES OF DRILLING-AND-BLASTING AT CONSTRUCTION OF BESKIDSKIY TUNNEL [PDF]

, 2016
Purpose. In this article it is necessary to analyze the possibility of developing technology and increasing its efficiency during the Beskidskiy tunnel construction in difficult engineering and geological conditions. Methodology.
O. L. Tiutkin, V. D. Petrenko, Tiutkin, Oleksii L., Proskurnia, S. T., Petrenko, Volodymyr D., S. T. Proskurnia   +5 more
core   +1 more source

Some methodological drilling - blasting parameters in the excavation of tunnel [PDF]

, 2017
The method of excavation tunnels, as infernal object depends primarily on the rock mass along the tunnel route, as well as rock mass in the nearby environment of the route.
Marija Hadzi-Nikolova, Doneva, Nikolinka, Risto Dambov, Hadzi-Nikolova, Marija, Dambov, Risto, Nikolinka Doneva   +5 more
core   +6 more sources

Study on the vibration velocity distribution law of adjacent tunnel blasting

矿业科学学报, 2019
When the two-lane tunnel in the mountainous area is excavated by the drilling and blasting method,the construction of the rear tunnel will inevitably produce unfavorable vibration effects,thus affecting the safety and stability of the preceding tunnel ...
Jia Haipeng, Liu Dianshu, Chen Bin, Hou Shijun, Deng Limei, Yang Rui, Tian Shuaikang   +6 more
doaj   +1 more source

Identification of the blasting vibration characteristics of groundwater-sealed tunnel

Scientific Reports, 2023
Blasting is widely used in mining, subway, demolition and groundwater-sealed tunnel, among them, the last one is widely concerned because of its many adjacent tunnels, high anti-seepage requirements, strict blasting control, etc.
Xiaokang Rao, Shengxiang Huang
doaj   +1 more source

Optimization of direct-hole cutting blasting technology for deep-buried layered surrounding rock diversion tunnels

地质科技通报, 2023
Objective In recent years, the trend of tunnel blasting construction extending to depth is becoming more and more significant, and the influence of layered rock mass in deep buried diversion tunnel on cutting quality in blasting construction is the key ...
Shouguo Jiang, Shuaibing Luo, Nan Jiang, Jianbin Sun, Haibo Zhou   +4 more
doaj   +1 more source

New progress and development of engineering blasting in China

, 2010
Applications and results of blasting techniques in some major construction projects in China since 2004 are reviewed. In the construction of water conservancy and hydropower projects and ports, there are a number of different cofferdams blasting ...
Zhou JH, Wang, X.G., Liu DS, Wang XG
core   +2 more sources

Frequency spectrum and energy refinement characteristics of blasting vibration signals in raw water pipeline tunnel excavation

Frontiers in Earth Science, 2022
The analysis of time-frequency variation and energy refinement characteristics of blasting vibration signals has contributed to understanding the propagation law of blasting vibration wave and reducing the possible losses. Combined with the measured data
Liang Zhang, Sheng Zhang, Tonghua Ling, Zongwei Deng   +3 more
doaj   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Blasting profile evaluation of sand-mud interbedded surrounding rock during the large-span tunnel construction

Scientific Reports
The sand-mud interbedded surrounding rock contains discontinuities, such as horizontal bedding, joints, weak planes and weak interlayers. Drilling and blasting construction in this kind of surrounding rock is very likely to cause very serious over-/under-
LongHao Ma, Fei Lin, Yanqiang Du, Song Ren, NengZeng Long, Ping Zhang   +5 more
doaj   +1 more source