A case study on rock damage prediction and control method for underground tunnels subjected to adjacent excavation blasting

Xiang, Xia; Li, H.B.; Li, J.C.; Liu, B.; Chong, Yu

doi:10.1016/j.tust.2012.11.010

Cited by 102 publications

(40 citation statements)

References 16 publications

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“…Ye et al [4] monitored the vibration effects on the existing tunnel caused by blasting of an adjacent cross tunnel. Xia et al [5] and Li et al [6] studied the effects of tunnel blast construction on the surrounding rock and the lining systems of adjacent existing tunnels, respectively. And the measures of vibration control were also put forward to ensure the safety of the existing tunnels.…”

Section: Introductionmentioning

confidence: 99%

Blasting Vibration Monitoring of Undercrossing Railway Tunnel Using Wireless Sensor Network

Lai

Fan

Chen

et al. 2015

International Journal of Distributed Sensor Networks

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The construction blasting in a new tunnel will undoubtedly influence the structure of existing tunnel. In order to monitor the effect of the blast-induced vibration on the structure of existing tunnel, a wireless sensor network (WSN) was established, which included the blast vibration monitoring system and the wireless remote data acquisition system. An existing railway tunnel was monitored during the construction of a new tunnel in Shaanxi, China. Concrete strain and peak particle velocity (PPV) were adopted to evaluate the influence of new tunnel construction blasting on the structure of existing tunnel. The monitoring results indicated that the concrete strain was different before and after the two tunnels crossing, which was much larger in front of the excavation face, and then it decreased gradually after the crossing. The PPV at the side wall of existing tunnel toward the blasting source was quite higher, and the location of maximum PPV changes with the process of tunnel excavation. When the distance between the existing and new tunnels was 4 m, the PPV reached 11.83 cm/s, which was already beyond the safe value, so the explosive charge should be reduced.

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Section: Introductionmentioning

confidence: 99%

Blasting Vibration Monitoring of Undercrossing Railway Tunnel Using Wireless Sensor Network

Lai

Fan

Chen

et al. 2015

International Journal of Distributed Sensor Networks

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show abstract

“…The comparison of time results obtained with these two methods is usually used in the case of a sole explosion such as in metro due to terrorist acts [12], [13]. A comparison of magnitude values can be used in the case of blasting shots with time delay such as explosions at a tunnel face during tunnel excavation by blasting method [16], [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Impact of Blasting at Tunnel Face on an Existing Adjacent Tunnel

Dang¹

2018

GEOMATE

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Experimental and numerical research of the effect of blasting vibrations during tunneling on surrounding structures (rock mass, existing tunnels, buildings, etc.) was widely studied in recent years. However, the effect of blasting vibration from a new tunnel on an existing adjacent tunnel is still unclear. A few researches were carried out to study the relationship of the observed Peak Particle Velocity (PPV) on the lining areas along the existing tunnel direction, due to either the lack of in situ test data or the difficulty in conducting field tests, particularly for tunnels that are usually old and vulnerable after several decades of service. This paper introduced two dimensional and three dimensional numerical with field data investigations on the effect of tunnel face blasting on the surrounding rock mass and on an existing adjacent tunnel along the existing tunnel direction. The Croix-Rousse tunnel project in Lyon (France) was adopted as a case study. The derived results allow predicting the tunnel lining damage areas under the impact of blast loads.

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“…The safety of important infrastructures such as the military facilities, airfield runways, underground targets, and high dams, is facing an increasingly serious threat when subjected to the attack of EPW. Therefore, it is very important to protect the structures against the combined action of the EPW penetration and explosion, which has gained great attention in recent decades [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

Yang¹,

Wang²,

Lu³

et al. 2018

J. vibroeng.

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Abstract. With the development of the precision guidance technology, the earth-penetrating weapon (EPW) is a huge threat to infrastructures. The objective of this research is to investigate the damage characteristics of mass concrete targets under the combined action of penetration and explosion. The validity of the penetration model is discussed by reproducing a previous experimental test reported in the literature. Meanwhile, a field test about the internal explosion in a concrete cube is conducted to verify the validity of the internal explosion model. Subsequently, damage characteristics of a mass concrete target from the upper part of a concrete gravity dam are discussed when subjected to the combined action of the penetration and explosion. In order to improve the structural performance of the mass concrete target to penetration and explosion loadings, high strength concrete material is selected as a preventive measure. Penetration processes and damage patterns of the mass target with normal and high strength concrete material are compared. Then, three internal explosion models are presented to investigate the influence of the initial penetration damage on the failure characteristics of the mass concrete target. The results show that the resistance of the mass target to the combined action of the penetration and explosion can be enhanced significantly by using the high strength concrete material. The initial penetration damage has a significant influence on the damage processes of the mass concrete target subjected to internal blast loading.

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A case study on rock damage prediction and control method for underground tunnels subjected to adjacent excavation blasting

Cited by 102 publications

References 16 publications

Blasting Vibration Monitoring of Undercrossing Railway Tunnel Using Wireless Sensor Network

Blasting Vibration Monitoring of Undercrossing Railway Tunnel Using Wireless Sensor Network

Impact of Blasting at Tunnel Face on an Existing Adjacent Tunnel

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

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