Evaluation of drainage tunnel effectiveness in landslide control

Sun, Hongchang; Wong, Louis Ngai Yuen; Shang, Yuna; Shen, Yong Jiang; Lü, Qing

doi:10.1007/s10346-010-0210-3

Cited by 54 publications

(15 citation statements)

References 19 publications

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“…Groundwater is an important factor and is usually considered a static quantity [1][2][3], while the dynamic component [4] is rarely considered in slope stability analysis. Specifically, current research on investigating groundwater-related impact factors is mostly limited in scope to the hydrostatic aspects, such as pore water pressure, water content, and groundwater level [5,6].…”

Section: Introductionmentioning

confidence: 99%

Application of Flow Velocity and Direction Measurement System in Slope Stability Analysis

Zhang²,

Chen

et al. 2021

Water

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Hydrodynamic pressure is often a crucial factor in the evaluation of slope stability analysis, especially for many rainfall-triggered landslides. Nevertheless, hydrodynamic pressure is rarely considered in the traditional limit equilibrium slice method of slope stability analysis since effective and reliable hydrodynamic pressure data are often lacking in practice. Moreover, efficient methods to involve these data in slope stability analysis are an urgent need. To overcome these concerns, the flow velocity and direction system (FVDS) is employed to measure the groundwater flow velocity, which can be used to generate hydrodynamic pressure samples at different monitoring points. Based on these samples, the hydrodynamic pressure of each soil strip is estimated using artificial neural networks (ANNs). Afterward, an improved Bishop method that considers hydrodynamic pressure is proposed. The effectiveness and significance of the proposed method are illustrated with a case study, the Fanshantou landslide in Zhejiang Province, China. The safety factor before and after taking drainage countermeasures is also calculated and compared. The results indicate that hydrodynamic pressure plays an important role in the stability analysis of the Fanshantou landslide. Compared with the classical Bishop method, the improved method is shown to agree better with the actual deformation characteristics of the landslide.

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Section: Introductionmentioning

confidence: 99%

Application of Flow Velocity and Direction Measurement System in Slope Stability Analysis

Zhang²,

Chen

et al. 2021

Water

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“…Thus, underground drainage is adopted to reduce the seepage force and control landslide motion. A drainage well is one underground drainage solution that reduces underground water levels and improves landslide stability [ 18 , 19 , 20 ]. The Brewery Creek landslide in New Zealand is controlled by deep drainage combined with tunnels and wells [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Well Drainage on Treating Seepage-Induced Reservoir Landslides

Zou

Wang

et al. 2020

IJERPH

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In the process of rapid drawdown of reservoir water level, the seepage force in the slide mass is an important factor for the stability reduction and deformation increment of many landslides in the reservoir areas. It is feasible to improve the stability of seepage-induced landslide by employing a drainage well to reduce or eliminate the water head difference that generates the seepage force. In this paper, the Shuping landslide, a typical seepage-induced landslide in the Three Gorges Reservoir area of China, is taken as an example. A series of numerical simulations were carried out to figure out the seepage field, and the Morgenstein–Price method was adopted to calculate the landslide stability. Then the influence of horizontal location of the drainage well, drainage well depth, drainage mode on the landslide treatment effect, and the applicability of drainage well were analyzed. The results show that: (1) landslide stability increases obviously with the well depth in the slide mass, while the increment of landslide stability with the well depth is limited in the slide bed; (2) the sensitivity of the stability improvement with the depth is greater than that with the horizontal positions of the drainage wells in the slide mass; (3) the drainage well is suggested to be operated when the reservoir water falls rather than operates all the time; and (4) the drainage method is most suitable for landslides with low and medium permeability. These results provide deep insights into the treatment of seepage-induced landslides.

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“…These methods can be used to analyze and predict the process of slope landslide, but the parameters needed are many, and the calculation is large (Ming-Zhu, Kong, & Zheng 2011). To this end, the empirical study on the comprehensive treatment of the JM tunnel landslide deformable body was carries out, the relevant parameters of the landslide deformable body were calculated on the basis of the construction of the FLAC two-dimensional numerical analysis model and the uniform design test method (Sun, Wong, Shang, Shen, & Lü, 2010). The study has certain reference significance to the construction of the modern expressway in China and the reinforcement supporting engineering of slope under the complicated geological conditions, which is helpful to promote the application of neural network model in engineering design.…”

Section: Introductionmentioning

confidence: 99%

The Comprehensive Treatment of the Ancient Landslide Deformable Body in the Giant Deep Rock Bedding based on the FLAC Analysis Model

et al. 2019

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In previous studies, most of the studies are based on the failure mechanism of the landslide deformable body on tunnel and the safety monitoring and early warning after the completion of the tunnel, while there is less research on tunnel construction. In order to study the comprehensive treatment of the deformable body of the ancient landslide in the giant deep rock bedding better, the treatment of JM tunnel landslide deformable body was selected to carry on the empirical study. After a detailed analysis of the geological characteristics of JM tunnel engineering landslide, the stability analysis of the landslide and the deformation body and the calculation of the thrust value based on the FLAC model were carried out on the basis of the monitoring data. After the construction of the model, the intensity parameters of the slip mass deformation and the sliding zone were obtained from the back analysis. On the basis of the above, the comprehensive treatment scheme for the rear side of the old landslide deformation body was determined, including earthwork cleanup, grading supporting, and the back pressure by abandoning the cleaned earthwork at the leading edge. The study is of great significance to the design of the construction of undercrossing tunnel of landslide under the complicated geological conditions. ABSTRACTThe Comprehensive Treatment of the Ancient Landslide Deformable Body in the Giant Deep Rock Bedding based on the FLAC Analysis Model Tratamiento integral del deslizamiento de un cuerpo deformable antiguo en un gigante lecho rocoso profundo con base en el modelo FLAC

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Evaluation of drainage tunnel effectiveness in landslide control

Cited by 54 publications

References 19 publications

Application of Flow Velocity and Direction Measurement System in Slope Stability Analysis

Application of Flow Velocity and Direction Measurement System in Slope Stability Analysis

Application of Well Drainage on Treating Seepage-Induced Reservoir Landslides

The Comprehensive Treatment of the Ancient Landslide Deformable Body in the Giant Deep Rock Bedding based on the FLAC Analysis Model

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