Study on the propagation law of tunnel blasting vibration in stratum and blasting vibration reduction technology

Tian, Xiaoxu; Song, Zhanping; Wang, Junbao

doi:10.1016/j.soildyn.2019.105813

Cited by 123 publications

(52 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is significantly important to investigate the cracking behavior of geotechnical structure during loading [52][53][54]. Based on the mechanical analyses and the research results of related scholars, this paper divides the failure mode of TTA into four types: slope slip failure mode, interface failure mode, wedge failure mode, and combination failure mode.…”

Section: Failure Modesmentioning

confidence: 99%

A Comprehensive Review of the Mechanical Behavior of Suspension Bridge Tunnel-Type Anchorage

Han

Liu

Wei

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The recent surge of interest towards the mechanical response of rock mass produced by tunnel-type anchorage (TTA) has generated a handful of theories and an array of empirical explorations on the topic. However, none of these have attempted to arrange the existing achievements in a systematic way. The present work puts forward an integrative framework laid out over three levels of explanation and practical approach, mechanical behavior, and calculation method of the ultimate pullout force to compare and integrate the existing findings in a meaningful way. First, it reviews the application of TTA in China and analyzes its future development trend. Then, it summarizes the research results of TTA in terms of load transfer characteristics, deformation characteristics, failure modes, and calculation of ultimate uplift resistance. Finally, it introduces four field model tests in soft rock (mainly mudstone formations), and some research results are obtained. Furthermore, it compares the mechanical behavior of TTA in hard rock strata and soft rock strata, highlighting the main factors affecting the stability of TTA in soft rock formation. This paper proposes a series of focused topics for future investigation that would allow deconstruction of the drivers and constraints of the development of TTA.

show abstract

Section: Failure Modesmentioning

confidence: 99%

A Comprehensive Review of the Mechanical Behavior of Suspension Bridge Tunnel-Type Anchorage

Han

Liu

Wei

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…e underground excavation construction of urban subway tunnel will lead to the deformation of strata settlement and then affect the safety and stability of adjacent existing buildings within the settlement range of strata. If the formation is too large, it may cause damage to the building [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Calculation Method of Influence Radius of Settlement Based on the Slices Method in Tunnel Construction

Tian

Song

Wang

et al. 2020

Mathematical Problems in Engineering

Self Cite

View full text Add to dashboard Cite

At present, the empirical formula is used to calculate the influence radius of surface settlement and the width of settlement trough, which lacks theoretical support. Aiming at this problem, this paper derived the theoretical calculation formula for predicting the influence radius of formation settlement based on the slices method. Then, the expression of the width of settlement trough was obtained according to the relationship between the settlement influence radius and the settlement trough width. The rationality of the formula was verified by the Heathrow Express tunnel and the Green Park tunnel. Through analysis and discussion, it was found that in the clay stratum, the settlement calculation formula can more accurately predict the surface settlement, while there is a big error in predicting the stratum settlement within 4d near the tunnel vault. In the sand layer, the internal friction angle is less than 40°, and the reinforcement surface is applied to the unsupported face to reduce the radius of influence; in the clay formation, when the cohesion is less than 50 kPa, the influence radius can be reduced by applying reinforcement measure to the unsupported face.

show abstract

“…Recently, with the rapid development of the traffic system, the scale and number of urban railways and mountain tunnels have significantly increased, which means that tunnels in soft strata are also increasing [1][2][3][4][5][6]. In order to build a tunnel in soft stratum, it is necessary to focus on solving the problems of stability of the vault, stability of the tunnel face, and excessive surface settlement [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Calculation Method of the Unsupported Span for the Shallow Tunnel in the Soft Stratum

Tian

Song

Zhou³

et al. 2020

Advances in Civil Engineering

Self Cite

View full text Add to dashboard Cite

During the construction of the tunnel in soft stratum, it is often found that the unsupported span is too large, resulting in instability of the tunnel face and collapse of the vault. However, the unsupported span was often selected according to the experience of engineers in the actual construction process, which was lack of the theoretical basis. Therefore, based on the calculation model of the surrounding rock pressure of shallow buried tunnel, this paper analyzed the stability of the tunnel face and the vault and then obtained the calculation formula of the unsupported span of the shallow buried tunnel in soft rock stratum. It was pointed out that the unsupported span is not determined by the arch crown stability or the tunnel face stability alone, but by both. The rationality of the formula was verified by a centrifugal test and an engineering case. The analysis and discussion showed that the unsupported span is sensitive to the cohesion and internal friction angle of the rock-soil mass, especially the cohesion. The unsupported span of the shallow buried tunnel in the soft rock stratum is a linear function of the support pressure. The support pressure has a more significant contribution to the increase of the unsupported span by the centre cross diaphragm (CRD) method, and the unsupported span increases linearly with the increase of the support pressure. The research results provide a theoretical reference for the determination of the unsupported span for the shallow tunnel in the soft stratum.

show abstract

Study on the propagation law of tunnel blasting vibration in stratum and blasting vibration reduction technology

Cited by 123 publications

References 24 publications

A Comprehensive Review of the Mechanical Behavior of Suspension Bridge Tunnel-Type Anchorage

A Comprehensive Review of the Mechanical Behavior of Suspension Bridge Tunnel-Type Anchorage

A Theoretical Calculation Method of Influence Radius of Settlement Based on the Slices Method in Tunnel Construction

A Theoretical Calculation Method of the Unsupported Span for the Shallow Tunnel in the Soft Stratum

Contact Info

Product

Resources

About