Safety criterion of gas pipeline buried in corrosive saturated soft soil subjected to blasting vibration in a coastal metro line

Jiang, Nan; Zhu, Bin; Zhou, Chuanbo; Luo, Xuedong; Li, Haibo; Wu, Tingyao; Lyu, Guopeng

doi:10.1016/j.tws.2022.109860

Cited by 23 publications

(6 citation statements)

References 32 publications

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“…The numerical calculation method can obtain the accurate explosion load and the pipeline response under more complicated conditions, so the numerical simulation calculation method has been widely used in the calculation of the external explosion of buried pipelines [ 8 ]. Nan Jiang et al [ [9] , [10] ] carried out field blasting tests on a full-size buried high-density polyethylene pipe (HDPE) to verify the distribution characteristics of blasting vibration velocity and dynamic strain. Taolong Xu et al [ 11 ] established the interaction mode between explosive load, soil and gas pipeline, and found out the main factors affecting the safety of parallel paved pipelines.…”

Section: Introductionmentioning

confidence: 99%

Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling

Ding

Zhang

et al. 2023

Heliyon

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Section: Introductionmentioning

confidence: 99%

Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling

Ding

Zhang

et al. 2023

Heliyon

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“…With the implementation of China’s trillion-dollar infrastructure plan, urban subways have garnered considerable interest. Inevitably, important structures will be crossed during the construction of the urban subway (Jiang et al, 2022b, 2023). Although, the shield machine has been widely adopted in the urban subway tunnel excavation, the drilling and blasting method also play a key role in the excavation of hard rock tunnel (Wu et al, 2022a).…”

Section: Introductionmentioning

confidence: 99%

“…Anas et al built a 3D-FE model of the clay brick masonry wall braced with two transverse walls one at each end to study the performance of the C-FRP wrapping and steel angle-strip system for strengthening the wall (Anas et al, 2022c). Jiang et al studied the dynamic response of the pipeline induced by blasting vibration and the possible damage characteristics of the pipeline (Jiang et al, 2022b). He et al monitored the buildings above the subway tunnel blasting and used the Hilbert-Huang transform (HHT) model to extract and analyze the time-frequency characteristic parameters of the blasting dynamic response signal.…”

Section: Introductionmentioning

confidence: 99%

Safety assessment for a ballast railway induced by underground subway tunnel blasting: A case study

Jiang

Zhou

Yao

et al. 2023

International Journal of Protective Structures

Self Cite

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Modern railroad infrastructure is subject to blast vibrations. The dynamic safety of an operating railroad under the influence of tunnel blasting is a primary problem for metro development in urban areas. In this paper, the blasting excavation of Wuhan Metro Line 5 was selected as a case. The ballast rail- sleeper- ballast bed composite structure numerical model was developed and validated in order to evaluate the ballast railway’s safety. The smoothed particle hydrodynamics element was chosen to replicate the ballast bed due to the instability and unpredictability of the ballast bed constructed from crushed stone. Further analysis was conducted on the dynamic response characteristics of the ballast rail-sleeper-ballast bed composite structure. On the basis of the parameter calculation and analysis, a prediction model of the blast vibration velocity of the ballast rail under blasting conditions was developed. Next, the rail was simulated as a semi-infinite Euler beam and placed on the Kelvin foundation to calculate the rail displacement at the train’s limited operation speed. By substituting the maximum rail displacement when the train is running at maximum speed into the rail velocity prediction model, it is possible to determine the maximum blast velocity that the rail can withstand in this instance. In this case, the ballast bed, sleeper, and ballast rail were also deemed safe.

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“…The basic supply of water, electricity and gas depends on underground pipelines, which can affect the normal life of tens of thousands or even millions of people in case of failure 3 – 5 . In severe cases, buried gas pipes, once broken, are highly susceptible to leakage, which may lead to serious explosions and pose a great safety threat to surrounding buildings and people 6 .As shown in Fig. 2 , the fire was caused by a leak in the pipeline.In addition, damage to underground pipelines and leakage of their contents can cause changes in the surrounding geological conditions, such as local saturation caused by pipeline leakage in areas with wet loess soils, resulting in uneven settlement of foundations and causing safety hazards in the surrounding buildings 7 ; At the same time, due to the invisibility of the underground pipelines, their maintenance costs are also high after breakage 8 .…”

Section: Introductionmentioning

confidence: 99%

Modified stochastic medium prediction model for the deformation response of concealed underground stations under existing pipelines

Zhang

Tong

et al. 2023

Sci Rep

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The underground pipeline network in the city is so intertwined that the concealed excavation of a metro station inevitably leads to a series of underground pipelines, causing settlement deformation and further risk of leakage. The existing theoretical methods for analysing settlement deformation are mostly for circular chambers, whereas metro stations have a nearly square cross-sectional form and different construction methods are very different, which have a greater impact on the deformation of the overlying pipelines. In this paper, based on the random medium theory and Peck's formula, the improved random medium model for predicting ground deformation is modified, the correction coefficients λ and η for the influence of different construction methods are proposed, the prediction model of underground pipeline deformation under different construction methods is obtained, and the numerical models of four work methods commonly used in urban tunnel construction: pillar hole method, side hole method, middle hole method and Pile-Beam-Arch (PBA) method are constructed through simulation, and the mathematical analysis software was used to fit the results to the model and obtain the range of correction coefficients λ and η for each of the four methods, and the accuracy and applicability of the theoretical model was verified by combining with actual engineering cases. The influence on the overlying pipes is in descending order: side hole method, pillar hole method, middle hole method and PBA method. The theoretical model provided in this paper for predicting the deformation of pipes in any overlying strata of the tunnel is well suited to the actual project and has a high degree of correlation with the measured results.

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Safety criterion of gas pipeline buried in corrosive saturated soft soil subjected to blasting vibration in a coastal metro line

Cited by 23 publications

References 32 publications

Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling

Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling

Safety assessment for a ballast railway induced by underground subway tunnel blasting: A case study

Modified stochastic medium prediction model for the deformation response of concealed underground stations under existing pipelines

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