Maximum surface settlement based classification of shallow tunnels in soft ground

Dindarloo, Saeid R.; Siami-Irdemoosa, Elnaz

doi:10.1016/j.tust.2015.04.021

Cited by 76 publications

(29 citation statements)

References 48 publications

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“…According to a large number of monitoring data of surface settlement during metro construction, Peck [13] used the "Gauss distribution curve" to fit it and proposed the Peck formula, as shown in formulas (5) and (6). Later, a large number of studies have revised the Peck formula, and it is found that the Peck formula is widely used in predicting surface settlement during metro and shallow tunnel construction [14][15][16][17][18]. In this paper, we make statistics on construction methods and support methods of urban shallow tunnels in silty soil in recent years in China, as shown in Table 1; meanwhile, we calculate the Peck formula parameters of surface settlement troughs of these tunnels, as shown in Table 6.…”

Section: Discussionmentioning

confidence: 99%

“…Kirsch [7], Chen et al [8], Oreste and Dias [9], Zhang et al [10], Vu et al [11], and Li et al [12] adopted numerical simulation and theoretical calculation methods to analyze stability of the excavation face of shallow tunnels in soft soil and sand. Following Peck [13] and Schmidt [14], Wang et al [15], Pinto and Whittle [16], Dindarloo and Siami-Irdemoosa [17], and Khademian et al [18] modified Peck formula to calculate surface settlement troughs and predict the maximum surface settlement due to shallow tunnelling process in soft soil. Fang et al [19], Yang and Huang [20], Ocak [21], and Bian et al [22] used field tests and theoretical calculation to study large deformation and rock mass pressure in soft rock of shallow tunnels in soft soil.…”

Section: Introductionmentioning

confidence: 99%

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Displacement Characteristics of an Urban Tunnel in Silty Soil by the Shallow Tunnelling Method

Zhang

Qiu

et al. 2020

Advances in Civil Engineering

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The urban shallow tunnelling process in silty soil is easy to cause large displacement of surface and tunnel. Obviously, if the strata and the tunnel face are not treated by reasonable reinforcement method, instability and collapse phenomenon will be encountered during the tunnel excavation. There are a series of studies on construction methods of shallow tunnels, but these methods have limitations in silty soil. In this study, a comprehensive construction plan of the urban shallow tunnel in silty soil was proposed and applied to a case study in Fuzhou, Fujian Province in South China. The in situ monitoring tests and numerical simulation were employed to address displacement characteristics of surface and tunnel. Results indicated that the urban shallow tunnelling process could achieve good effect by dewatering of silty soil, reinforcing surface by vertical jet grouting piles, and advanced small pipes and circumferential grouting in the tunnel face; surface settlement during dewatering process accounted for about 30% of total surface settlement in silty soil; the excavation of the top heading, the middle, and lower benches had great effect on displacement of surface and tunnel for three-bench seven-step excavation method in silty soil; surface settlement troughs in silty soil were deeper and wider; lock-feet bolts had good effect on restricting horizontal convergence; and ratio of total crown settlement and total horizontal convergence was in range of 1.43∼1.59 when b/h was 0.88 in silty soil. The construction plan proposed in this paper is helpful for further study of shallow tunnel tunnelling process in silty soil.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Displacement Characteristics of an Urban Tunnel in Silty Soil by the Shallow Tunnelling Method

Zhang

Qiu

et al. 2020

Advances in Civil Engineering

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“…The expectation of an underground project client might be too high so that weekly reporting is required, whereas a client of another project needs monthly reports. A few millimeters settlement during the construction of an urban tunnel might be the concern of the nearby residents and hold the project for months, while larger settlements are acceptable in other projects [11]. All of these attributes affect the main characteristics of the work breakdown structure and they should be well understood before the development of the WBS.…”

Section: Complex Underground Project Attributesmentioning

confidence: 99%

Work breakdown structure (WBS) development for underground construction

Siami-Irdemoosa

Dindarloo

Sharifzadeh

2015

Automation in Construction

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“…Civil engineering projects are usually dealing with geological and geotechnical problems. Conducting these projects in urban areas has several critical and special problems (Dindarloo andSiami-Irdemoosa 2015, Fang et al 2016). Lack of scientific attention to them can cause noticeable damages or even disasters (e.g., BBC News 2015).…”

Section: Introductionmentioning

confidence: 99%

Application of Electrical Resistivity Imaging for Engineering Site Investigation. A Case Study on Prospective Hospital Site, Varamin, Iran

Amini

Ramazi

2016

Acta Geophys.

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A b s t r a c tThe article addresses the application of electrical resistivity imaging for engineering site investigation in Pishva Hospital, Varamin, Iran. Some aqueduct shafts exist in the study area backfilled by loose materials. The goals of this study are to detect probable aqueduct tunnels and their depth, investigate filling quality in the shafts as well as connection(s) between them. Therefore, three profiles were surveyed by dipoledipole electrode array. Also, to investigate the potentially anomalous areas more accurately, five additional resistivity profiles were measured by a Combined Resistivity Sounding-Profiling array (CRSP). According to the results of 2-D inversion modelling, a main aqueduct tunnel was detected beneath the central part of the site. Finally, the resistivity pattern of the detected aqueduct system passing the investigated area was provided using the obtained results.

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Maximum surface settlement based classification of shallow tunnels in soft ground

Cited by 76 publications

References 48 publications

Displacement Characteristics of an Urban Tunnel in Silty Soil by the Shallow Tunnelling Method

Displacement Characteristics of an Urban Tunnel in Silty Soil by the Shallow Tunnelling Method

Work breakdown structure (WBS) development for underground construction

Application of Electrical Resistivity Imaging for Engineering Site Investigation. A Case Study on Prospective Hospital Site, Varamin, Iran

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