Results 1 to 10 of about 1,591 (253)
A new excavation technology of blasting combined with TBM [PDF]
Geomatics, Natural Hazards and Risk, 2021 The technical feasibility of drilling and blasting or TBM excavation method is the key to determine the underground engineering. In view of the high strength, high abrasiveness and good integrity of hard rock in site, and considering the damage of ...
Zhifei Song, Ke Man, Xiaoli Liu
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Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine [PDF]
Heliyon, 2023 During the excavation process in fractured rock masses in underground mines, blasting excavation can cause dangerous block collapses on surrounding rock.
Zhongyuan Gu, Miaocong Cao
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PPV distribution of sidewalls induced by underground cavern blasting excavation. [PDF]
Sci Rep, 2021 Abstract The peak particle velocity (PPV) is an important indicator for predicting blasting excavation disturbances. However, the PPV distribution in the deep underground space is significantly different from that on the outdoor ground. Therefore, it is difficult to predict the underground PPV by Sadovsky’s vibration formula.
Luo Y +5 more
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Applied Sciences (Switzerland), 2022 In this paper, the mechanism of rock damage induced by blasting excavation is numerically studied by using an FDEM-based multiphysics fracture analysis software, MultiFracS.
Chengzeng Yan, Wenhui Ke
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Evaluation of the impact of blast damage on tunnel surrounding rock induced by C-type cumulative tube cone angle [PDF]
Scientific ReportsOver-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 +5 more
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Geomatics, Natural Hazards and Risk, 2021 Based on Beishan Exploration Tunnel (BET), the blasting test has been carried out and studied deeply, especially the blasting vibration velocity and excavation damaged zone (EDZ) have been monitored immediately along the blasting cycles.
Zhifei Song, Ke Man, Xiaoli Liu
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Shock and Vibration, 2023 Blasting vibration generated from blasting excavation of subway tunnel may endanger the adjacent structures buried in strata. To guarantee their safety and stability, it is crucial to understand the spatial variation law of blasting vibration in strata ...
Zhen Zhang +3 more
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DETERMINING THE OPTIMAL METHOD OF EXCAVATION OF THE ZENICA TUNNEL AS A FUNCTION OF MINIMAL DAMAGE TO ROCK MASS OF POORER QUALITY OUTSIDE THE EXCAVATION PROFILE [PDF]
e-Zbornik. Elektronički Zbornik Radova Građevinskog Fakulteta, 2022 Corridor Vc enhances the connection of Bosnia and Herzegovina with neighboring countries and improves the potential for economic development. The Corridor Vc motorway in Bosnia and Herzegovina stretches from the northern border with the Republic of ...
Ekrem Bektašević +5 more
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Geofluids, 2023 By taking the blasting excavation of a deeply buried karst tunnel in the North Tianshan Mountains in China as research objects, the damage induced by blasting excavation and seepage characteristics of deep rock under high seepage pressure was ...
Qian Dong +5 more
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Experimental study of the effect of rock blasting with various cutting forms for tunnel excavation using physical model tests [PDF]
Archives of Civil Engineering, 2021 Cutting blasting has been widely used for tunnel excavation. The cutting forms significantly influence the blasting effect. This research focuses on the study of the relationship between cutting forms and blasting effects.
Huaming An, Yushan Song, Deqiang Yang
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