By Yiqun Tang, Jie Zhou, Ping Yang, Jingjing Yan, Nianqing Zhou

Integrating details from a number of components of engineering geology, hydrogeology, geotechnical engineering, this publication addresses the overall box of groundwater from an engineering standpoint. It covers geological engineering in addition to hydrogeological and environmental geological difficulties brought on by groundwater engineering. It comprises 10 chapters, i.e., uncomplicated groundwater idea, parameter calculation in hydrogeology, prevention of geological challenge attributable to groundwater, development dewatering, wellpoint dewatering tools, dewatering wells and drilling, groundwater dewatering in foundation-pit engineering, groundwater engineering in bedrock parts, numerical simulation in groundwater engineering, groundwater corrosion on concrete and metal. in accordance with up to date literature, it describes contemporary advancements and offers a number of case reviews with examples and difficulties. it truly is an important reference resource for business and educational researchers operating within the groundwater box and will additionally function lecture-based path fabric delivering primary details and useful instruments for either senior undergraduate and postgraduate scholars in fields of geology engineering, hydrogeology, geotechnical engineering or to behavior similar research.

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How to distinguish the pressure head, potential head, total head? 6. What is the dynamic water pressure? 7. What is the validity of Darcy’s Law? 8. What factors influence the hydraulic conductivity? 9. What is the flow net? And how it makes? Chapter 2 Hydrogeological Parameters Calculation Hydrogeological parameters of aquifer are the essential and crucial basic data in the designing and construction progress of geotechnical engineering and groundwater dewatering, which are directly related to the reliability of these parameters.

More importantly, it can calculate the seepage amount and also could determine the water head at each location in the flow net. In practical engineering, many two- or three-dimensional conditions of seepage can be encountered. In these cases, mapping a flow net is a very effective way. As shown in Fig. 21, in the construction of foundation pit dewatering, it is a two-dimensional seepage problem around the underground diaphragm wall. It is most convenient to calculate the seepage amount and head loss by the flow net contour.

38 2 Hydrogeological Parameters Calculation (b) Multiwells pumping test is the pumping test that has a pumping well and one or more observation well(s). It has a wider application. It can determine not only the hydraulic conductivity and pumping discharge, but also the anisotropy of hydraulic conductivity, the radius and shape of the depression cone, the width of supply area, the reasonable well spacing, interference coefficient, and the hydraulic connection between groundwater and surface water.

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Groundwater Engineering by Yiqun Tang, Jie Zhou, Ping Yang, Jingjing Yan, Nianqing Zhou
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