Mechanism of surrounding rock failure in impact stress and in-situ stress in circular tunnel
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023 With depth increase of many mines, the damage of surrounding rock by high ground stress cannot be ignored under the blasting excavation method. In view of the strong disturbance of surrounding rock caused by dynamic excavation and unloading under high ...
Jun Zhou +5 more
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Influence of the Tunnel Shape on Shotcrete Lining Stresses [PDF]
, 2012 Tunnel excavation is frequently carried out in rock masses by the drill and blast method and the final shape of the tunnel boundary can be irregular due to overbreaks.
Adeli +43 more
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Analysis of critical failure depth of surrounding rock of roadway under blasting disturbance
Gong-kuang zidonghua, 2018 Mathematical expression of critical failure depth of surrounding rock of roadway under blasting disturbance was obtained through elasticity analysis. On the basis, influence rule of roadway excavation radius, blasting vibration speed and cohesion force ...
WANG Xiana
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Controlled shaped-charge blasting technology for deep underground tunnel engineering
Građevinar, 2023 With the rapid development of the economy and society, the demand for mineral resources and energy has increased rapidly. However, it is difficult to improve the efficiency of blasting construction and control the stability of the surrounding rock in ...
Junlin Lv +3 more
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Numerical Simulation of Dynamic Damage and Stability of a Bedding Rock Slope under Blasting Load
Shock and Vibration, 2019 Blasting excavation of a bedding rock slope is a common problem in highway construction in mountainous areas. Accurate simulation of damage area caused by blasting excavation is of great significance for the subsequent maintenance of slopes.
Yekai Chen +3 more
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Study of Two-Step Parallel Cutting Technology for Deep-Hole Blasting in Shaft Excavation
Shock and Vibration, 2021 In hard rock deep-hole blasting excavation, blastholes are rarely utilized due to the clamping effect of the lower rock, which affects excavation progress and restricts the development and application of deep-hole blasting technology.
Renshu Yang +6 more
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In-ground vibration propagation characteristics during underground blasting [PDF]
, 2019 Purpose. In this study, we investigated the vibration propagation characteristics in ground caused by the explosion pressures during ground and underground blasting.
Jong-Gwan, Kim +2 more
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Research into the effect of gallery size on blast pull in underground coal mines [PDF]
, 2018 Purpose. To investigate the effect of gallery size on blast pull in underground colliery by drilling and blasting techniques. Methods. The study conducted in three different underground collieries namely A, B and C located in eastern part of India has ...
Choudhary, B
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e-Zbornik. Elektronički Zbornik Radova Građevinskog Fakulteta, 2023 The Vranduk I bridge is located on the motorway route, on the part of the subsection: Zenica Municipality Northern Administrative Boundary - Zenica North.
Ekrem Bektašević +4 more
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Assessment of blasting operations effects during highway tunnel construction [PDF]
, 2015 Blasting operations are one of the fundamental parts of daily civil engineering. Drilling and blasting still remain the only possible ways of tunnelling in very adverse geological conditions. However, this method is a source of various disadvantages, the
Drusa, Marián +2 more
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