الفهرس 
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Abstract
Development of any port lead to have new areas if it possible we can have a new quay wall if we haven`t due to lack of space, we have to upgrade the existing quay wall to accommodate the new ships with higher depths, if we have a new construction in front of the existing quay wall it will lead to affect the movement of goods mooring and unmooring, if we have rails and underground services we have to move it to the new construction all of this will lead to stop the quay wall for several of months which will cause economic losses for the port. Nowadays we have something we called it ‟very soft renovation techniques‟‟ it combined between costs effectively and with an extraordinary speed and we can use this concept for gravity quay walls and sheet piled quay walls we can illustrate this concept in the previous figure.For hydro soil services we have three methods, firstly we have ground anchor method, in this method we can determine the level, spacing, and anchor properties from stability analysis, for gravity quay walls first we have to a core drill for the ground anchor and it depend into resistance of concrete of quay wall, drilling into the quay wall is done by special drilling system and equipment, we can use low working platforms for drilling process.Very high pressure grouting (VHP) it is mix of cement and soil to form a vertical column with good resistance, making a net or a matrix form with these columns lead to a deeper foundation for the gravity quay wall, for sheet pile walls we can using this method by making a double row of interlocking piles behind the existing sheet pile quay wall, (VHP) column method is also guarantee a high protection from erosion to water jets caused by the ships’ propellers. Drainage system method is used for making the ground water lower than the water in front of the quay wall by gravity that will decrease the loads acting on the quay wall by making sand piles by calculating distance, the diameter of the sand pile is depending on the flow of the water, it is a PVC pipe with a filter installed by drilling. For the previous methods, we can use all of it combined, will be more effective, economical and have a small affects to the quay wall. Nowadays, we have very big ships like containers, RO-RO and special purpose ships, these ships are using very high powered propellers in berthing and leaving the quay wall which will cause erosion to the sub-soil specially non- cohesive soil so it will make additional retaining height and loads to the quay wall so, we must have a protection to the soil on the bottom in front of quay wall by using two methods.Firstly we have hot liquid asphalt under the water method; in this method we are using a hot mix of asphalt under the water according to the bottom currents and scour rates caused by the propellers of the ships, the asphalt layers can withstand a 6m/second water velocity, the thickness of the layer is depending on the sliding and lifting force due to propellers. Bottom revetments with liquid asphalt method, to increase the resistance against currents, we can reduce unit size of the stones lead to reducing the layer thickness so, the grouting of the stone will be considered, we can partially grouting for the surface by 30-60% of stone voids lead to be more effective to the revetments, for totally grouting the currents will not have any effects. Finally, we can use combined method between hydro soil services and bottom protection to make the economical and optimum solution for deepening without economic losses for the port.