Simple Method to Predict Ground Displacements Caused by Installing Horizontal Jet-Grouting Columns

Wang, Zhifeng; Shen, Shui‐Long; Cheng, Wen-Chieh

doi:10.1155/2018/1897394

Cited by 46 publications

(29 citation statements)

References 56 publications

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“…In the methane tunnels, safety training for construction and management personnel must be effective. During the construction of WWL tunnel, it was found repeatedly that the inspectors operated against the regulations (Ma et al 2014;Nie et al 2015;Wang et al 2018a, 2018d, Wang and Sun, 2019. (3) In low concentration methane tunnel, methane detection equipment must be installed.…”

Section: Resultsmentioning

confidence: 99%

Methane explosion accidents of tunnels in SW China

Fan

et al. 2019

Geomatics, Natural Hazards and Risk

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This Express Letter reports three methane explosion accidents during tunnel construction in Southwest China. In recent years, tunnel construction of China is developing rapidly. The geological conditions of the tunnel passing through are extremely complex, especially, tunnels in coal strata increase rapidly, what's worse, many methane explosions occur during the tunnel construction. The backgrounds, causes and rescue operation of three methane explosion accidents situation are studied. Furthermore, we proposed relevant measures to prevent methane explosions of tunnels. ARTICLE HISTORY

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Section: Resultsmentioning

confidence: 99%

Methane explosion accidents of tunnels in SW China

Fan

et al. 2019

Geomatics, Natural Hazards and Risk

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“…Sci. 2018, x, x FOR PEER REVIEW 3 of 18 ( )( ) Illustration of a case with uniform stress applied at tunnel boundary (recreated based on Shen et al [11], Wang et al [68]). …”

Section: Review Of Existing Methodsmentioning

confidence: 99%

“…x is the horizontal distance from the excavation face of the point B along the jacking direction, y is the lateral distance from the jacking axis to the point B, z is the depth of the point B, h is the depth of jacking machine centerline. Illustration of a case with uniform stress applied at tunnel boundary (recreated based on Shen et al [11], Wang et al [68]). …”

Section: Review Of Existing Methodsmentioning

confidence: 99%

Prediction of Ground Deformation during Pipe-Jacking Considering Multiple Factors

Ren

Shen

et al. 2018

Applied Sciences

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Pipe-jacking is a construction method widely used in pipeline constructions. Prediction of ground deformation induced by pipe-jacking, is important for safety and scheduling purposes. This paper presents an approach to predict ground deformation during pipe-jacking considering following factors: (i) bulkhead additive thrust; (ii) friction on jacking machine; (iii) grouting pressure; and (iv) ground loss. Mindlin's solution was used to calculate the ground deformation induced by bulkhead additive thrust and friction on the jacking machine. The shearing disturbance coefficient was adopted to evaluate the mitigation effect of shearing behavior on ground deformation. Verruijt's solution was used to simulate the effect of grouting pressure. Sagaseta's method was adopted to consider the ground loss induced by over-excavation. Subsequently, a three-dimensional analytical solution for ground deformation induced by pipe-jacking was obtained. A case study based on a pipe-jacking project undertaken in Jiangsu, China was analyzed to validate the proposed approach. The results indicated that the proposed approach was robust and could be implemented for future pipe-jacking projects.

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“…The objective of GSPG is twofold: to improve the quality of the rock mass and prevent tunnel collapse during construction [3][4][5] and to reduce the permeability rate of the rock mass from ground surface to tunnel bottom and prevent the inrush of the surface water and groundwater [3,6,7]. Moreover, GSPG can also reduce the loss of surface water and groundwater caused by karst fissures, which affects the domestic water consumption near shallow-buried sections during tunnel excavation [2,8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Ground Surface Pregrouting in a Mountain Tunnel Based on FAHP

Zhu

Sun

et al. 2019

Mathematical Problems in Engineering

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The quality of ground surface pregrouting (GSPG) is commonly qualitatively evaluated using single factor; however, the quality evaluation involves numerous facets, and a quantitative evaluation is rare. The aim of this study was to quantitatively evaluate the quality of a GSPG based on three aspects. The fuzzy analytic hierarchy process (FAHP) was adopted to obtain the final score and quality classification of the GSPG. Based on three aspects, namely, integrity, continuity, and sturdiness, a series of field tests was also conducted, qualitatively evaluating the quality of the GSPG preliminary, to obtain the required test data and verify the FAHP results. The results of the FAHP showed that the quality of the GSPG was 86.42, which could be classified as “Good”, whereas the field tests exhibited that the GSPG was effective, thereby verifying that the FAHP was reliable. In addition, the proposed method provided a detailed comprehension of the quality evaluation of GSPG and a frame of reference for analogous engineering.

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Simple Method to Predict Ground Displacements Caused by Installing Horizontal Jet-Grouting Columns

Cited by 46 publications

References 56 publications

Methane explosion accidents of tunnels in SW China

Methane explosion accidents of tunnels in SW China

Prediction of Ground Deformation during Pipe-Jacking Considering Multiple Factors

Evaluation of Ground Surface Pregrouting in a Mountain Tunnel Based on FAHP

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