Analyses of leakage effect of waterproof curtain during excavation dewatering

Journal of Hydrology, Год журнала: 2020, Номер 583, С. 124582 - 124582

Опубликована: Янв. 18, 2020

Язык: Английский

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A collaborative approach for urban underground space development toward sustainable development goals: Critical dimensions and future directions

Frontiers of Structural and Civil Engineering, Год журнала: 2021, Номер 15(1), С. 20 - 45

Опубликована: Фев. 1, 2021

Язык: Английский

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Prediction Model of Shield Performance During Tunneling via Incorporating Improved Particle Swarm Optimization Into ANFIS

IEEE Access, Год журнала: 2020, Номер 8, С. 39659 - 39671

Опубликована: Янв. 1, 2020

This paper proposes a new computational model to predict the earth pressure balance (EPB) shield performance during tunnelling. The proposed integrates an improved particle swarm optimization (PSO) with adaptive neurofuzzy inference system (ANFIS) based on fuzzy C-mean (FCM) clustering method. In particular, uses operational parameters as inputs and computes advance rate output. Prior modeling, critical are identified through principle component analysis (PCA). hybrid is applied prediction of in tunnel section Guangzhou Metro Line 9 China. results indicate that PSO-ANFIS shows high accuracy predicting EPB terms multiobjective fitness function [i.e. root mean square error (RMSE) = 0.07, coefficient determination (R ² ) 0.88, variance account (VA) 0.84 for testing datasets, respectively]. good agreement between actual measurements predicted values demonstrates promising accuracy.

Язык: Английский

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An integrated framework for the comprehensive evaluation of low impact development strategies

Journal of Environmental Management, Год журнала: 2021, Номер 294, С. 113023 - 113023

Опубликована: Июнь 10, 2021

Язык: Английский

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Sustainable development and environmental restoration in Lake Erhai, China

Journal of Cleaner Production, Год журнала: 2020, Номер 258, С. 120758 - 120758

Опубликована: Фев. 27, 2020

Язык: Английский

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GIS-based multi-criteria analysis for flood prone areas mapping in the trans-boundary Shatt Al-Arab basin, Iraq-Iran

Geomatics Natural Hazards and Risk, Год журнала: 2021, Номер 12(1), С. 2087 - 2116

Опубликована: Янв. 1, 2021

Severe flood events in the trans-boundary Shatt Al-Arab basin (Iraq-Iran) claim hundreds of human lives and cause damage to economy environment. Therefore, developing a hazard model recognize basin's susceptible areas flooding is important for decision makers comprehensive risk management. The map was prepared using geographical information systems (GIS) multi-criteria analysis (MCDA) along with application analytical hierarchy process (AHP) method identify optimal selection weights factors that contribute risk. causative used this study were rainfall, distance river, digital elevation (DEM), slope, land use/land cover (LULC), drainage density, soils, lithology. derived consisted four distinct categories (zones). These zones depict high, intermediate, low, very low around 20%, 40%, 39%, 2% area, respectively. produced further verified historical event area. results found be consistent data events, revealing model's effectiveness realistic representation mapping.

Язык: Английский

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Calculation of groundwater head distribution with a close barrier during excavation dewatering in confined aquifer

Geoscience Frontiers, Год журнала: 2020, Номер 12(2), С. 791 - 803

Опубликована: Сен. 18, 2020

When pumping is conducted in confined aquifer inside excavation pit (waterproof curtain), the direction of groundwater seepage outside changes from horizontal to vertical owing existence curtain barrier. There no analytical calculation method for head distribution induced by dewatering excavation. This paper first analyses mechanism blocking effects a close barrier aquifer. Then, simple equation based on solution proposed calculate heads and with waterproof (hereafter refer barrier) The derived according two conditions: (i) constant water head, (ii) flow rate. verified both numerical simulation experimental results. comparisons demonstrate that model can be applied engineering practice

Язык: Английский

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Distribution characteristics and utilization of shallow geothermal energy in China

Energy and Buildings, Год журнала: 2020, Номер 229, С. 110479 - 110479

Опубликована: Сен. 15, 2020

Язык: Английский

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Effects of groundwater exploitation and recharge on land subsidence and infrastructure settlement patterns in Shanghai

Engineering Geology, Год журнала: 2021, Номер 282, С. 105995 - 105995

Опубликована: Янв. 8, 2021

Язык: Английский

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Twin tunnelling induced ground settlements: A review

Tunnelling and Underground Space Technology, Год журнала: 2021, Номер 110, С. 103614 - 103614

Опубликована: Янв. 22, 2021

Язык: Английский

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