Reliability of Prediction for Tunnel Excavation Damage

Reliability of Prediction for Tunnel Excavation Damage

Influence of the Seismic Wave Velocity of the Damage Zone

Dec 13, 2021 · There are two reasons for selecting the near-excavation area A1 for analysis: on the one hand, the near-excavation area has a high PPV value, which can be seen from Figure 8, and on the other hand, the rockburst mainly occurs in the shallow rock mass of the tunnel. The following conclusions can be drawn from Figure 9.

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Reliability assessment of EPB tunnel-related settlement

Reliability assessment of EPB tunnel-related settlement 61 greater than 30, it is difficult to establish any clear relationship between the surface settlement, the advance rate, S1 and S2.

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Network Jitter: How to Test, Measure, and Reduce Jitter in

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A simplified prediction method for evaluating tunnel

Predicting excavation damage zone depths in brittle rocks

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Structural Safety Evaluation of Tunnel Based on the

It is still a challenge to accurately evaluate the structural safety of tunnel during the process of construction. To address this issue, a safety evaluation approach of tunnel based on the monitoring data during construction is proposed in this study. Firstly, the detailed description of modelling the tunnel excavation, releasing the load acting on the tunnel, and selecting the …

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Structural Reliability Analysis of Tunneling-Induced

Predicting excavation damage zone depths in brittle rocks

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Research on the Large Deformation Prediction Model and

Dec 22, 2020 · The weak surrounding rock has the characteristics of easy softening, poor integrity, low mechanical strength, etc., which makes it easy to induce different degrees of deformation and damage under excavation disturbance and then seriously affects the stability of the tunnel. Carrying out soft rock tunnel deformation prediction research and designing the …

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Information-Based Construction of High-Speed Railway Tunnel

Oct 31, 2017 · Nowadays, railway tunnel construction faces huge developments and opportunities, with a tendency for high speed and long distance. How to effectively apply the information in the construction process has been the focus of current research. According to the Xian-nvyan tunnel in Xicheng high-speed railway, our research was based on the geological …

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ADAPTIVE RELIABILITY ANALYSIS OF EXCAVATION …

also developed to assess the fragility of excavation-induced infrastructure system damage for multiple serviceability limit states. Finally, a reliability analysis of a shallow circular tunnel driven by a pressurized shield in a frictional and cohesive …

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Reliability Analysis and Updating of Excavation-Induced

Oct 10, 2008 · The reliability of the adjacent building against "damage" (defined herein as the violation of serviceability requirements such as having intolerable settlement) is first analyzed and the probability of exceedance (i.e., exceeding the tolerable settlement) is calculated.

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Extension prediction model of soft rock tunnel deformation

Dec 27, 2021 · When the tunnel passes through the soft rock area, the deformation problem is unavoidable, which affects the construction of the tunnel. In this paper, a method is proposed to predict the deformation grade of soft rock tunnel. Six influencing factors of soft rock tunnel deformation are selected as evaluation indexes, including tunnel depth, excavation method, …

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Development of a probabilistic model for the prediction of

ABSTRACT: Tunnel construction can cause deformations of the surrounding ground, which endanger build- ings and other structures located in the vicinity of …

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Explosive density and detonation velocity in different

Tunnel roof deflection is an important measure to control the safety of excavation activity, especially for large-section tunnels using the sequential construction method.

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A CASE STUDY OF DAMAGE ON MASONRY BUILDINGS …

realistic parameters to the advanced models used in damage prediction. 2. Case study 2.1 Introduction . The Metro Line 9 in Barcelona is a reference tunneling project due to its total length of shield driven tunnels of more than 40Km and large excavation diameters (9,4m and 12,0), encountering a m wide

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A simplified prediction method for evaluating tunnel

Mar 01, 2018 · An existing tunnel was located on the southern side of the excavation; the minimum distance between the tunnel and the excavation was only 16.5 m. To control the deformation induced by the excavation and protect the tunnel, multiple excavation steps were performed. The southern excavation was excavated first, followed by the northern excavation.

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Extension prediction model of soft rock tunnel deformation

Dec 27, 2021 · When the tunnel passes through the soft rock area, the deformation problem is unavoidable, which affects the construction of the tunnel. In this paper, a method is proposed to predict the deformation grade of soft rock tunnel. Six influencing factors of soft rock tunnel deformation are selected as evaluation indexes, including tunnel depth, excavation method, …

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Damage prediction of transmission lines under typhoon

Finally, this paper uses probability addition equation to integrate multi-effect and establishes a damage prediction model for transmission lines under typhoon disasters. The prediction model was verified by taking the 110-kV THJ line, a typical line in Guangdong province, China, under Typhoon "Mangkhut" in 2018, as an example.

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IDEALS @ Illinois: Reliability-based design of tunnel

In particular, tunnel construction in cities requires very high standards of safety, since failure can cause the loss of many human lives as well as damage of properties. Despite the recent advances in the development of tunnelling methods, it is still difficult to predict the exact properties of the ground where the tunnels are planned to be

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