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Ashdod
Chevron has shut down the Tamar natural gas platform off the Israeli coast at the instruction of the country's energy ministry, the company said on 12 May, following the wave of unrest in the region. The Israeli energy ministry said all of Israel's energy needs will continue to be met despite the shutting down of Tamar, the main source of natural gas for the local market. "In accordance with instructions received from the Ministry of Energy, we have shut in and depressurized the Tamar Platform," Chevron said in a statement. The Tamar platform is located some 25 km off the city of Ashdod along Israel's southern Mediterranean coast. Israel carried out hundreds of air strikes in Gaza on 12 May, and Palestinian militants fired multiple rocket barrages at Tel Aviv and the southern city of Beersheba in the region's most intense hostilities in years.
Country:
- Asia > Middle East > Israel > Mediterranean Sea (0.40)
- Asia > Middle East > Palestine > Gaza Strip > Gaza Governorate > Gaza (0.33)
- Asia > Middle East > Israel > Tel Aviv District > Tel Aviv (0.28)
- (2 more...)
Oilfield Places: Asia > Middle East > Israel > Mediterranean Sea > Southern Levant Basin > Matan License > Tamar Field > Tamar Sands Formation (0.99)
Offshore Vibro-Flotation with Stone Column by Jack-up under Extreme Wave Condition
Tao, Ran (China Harbour Engineering Co., Ltd.) | Hua, Xiao-tao (CCCC Second Harbour Engineering Co., Ltd.) | Huang, Rui-yi (CCCC Second Harbour Engineering Co., Ltd.) | Feng, Xian-dao (CCCC Second Harbour Engineering Co., Ltd.)
ABSTRACT To solve the problem that the traditional construction method of offshore vibro-flotation with stone column by floating barge with vibro-equipment could hardly meet the schedule and tolerance requirements of ground improvement specification under the extreme wave condition especially from Mediterranean sea, this paper proposes a solution as a jack-up used for offshore vibro-flotation with stone column based on the overall structural stability calculation and foundation settlement calculation. Based on the successful application of offshore vibro-flotation with stone column by jack-up for the construction of Hadarom port in Israel, with its advantage of stability and effectiveness for offshore ground improvement under extreme wave condition, this solution of jack-up has a broad promotion prospect as a reference for similar projects. INTRODUCTION As an extension of Ashdod port and Hayovel port in Israel, Hadarom port is designed for Maersk Triple E-class container vessel, comprising a 60-hectare container terminal formed by the hydraulic reclamation, which is shielded by the 600-meter extension of the existing main breakwater as shown in the following Fig. 1 and Fig. 2. Since the upper layer of ground foundation under the main breakwater extension is mostly soft and loose silty sand with a piezocone penetration test (PCPT) value less than 5 MPa, the vibro-flotation with an Area Replacement Ratio (ARR) of 13% is proposed for ground improvement as an anti-liquefaction measure with the consideration of reducing settlement and increasing load-bearing capacity as well (Degen, 2006). DESIGN CERITERIA The major design issues considered for foundation treatment of main breakwater extension are moderate levels of earthquake accelerations, and associated potential for liquefaction of poor soils under breakwater foundations (Mohab , 2013 and Buddhima, 2015). According to the liquefaction assessment at main breakwater extension, the loose silty sand was determined to be liquefiable based on a PGA value of 0.12g and M value of 7.5, while the silt was determined to be susceptible to strength reduction. Furthermore, analyses were then carried out assuming that the silty sand is: 1) replaced; and 2) improved. As a result, the maximum earthquake induced displacements were on the order of 60 to 80 centimeters, which is considered acceptable for this type of rubble mound breakwater structure with a 50-year design life in combination with a 100-year return period, as it can accommodate lateral deformation (DHV, 2011).
Industry:
- Transportation (0.70)
- Energy > Oil & Gas > Upstream (0.69)
Engineering Solution to Piling Works Under Extreme Wave Condition
Feng, Xian-dao (CCCC Second Harbour Engineering Co., Ltd.) | Tao, Ran (China Harbour Engineering Co., Ltd.) | Huang, Rui-yi (CCCC Second Harbour Engineering Co., Ltd.) | Xue, Zhi-wu (CCCC Wuhan Harbour Engineering Design and Research Co., Ltd.)
ABSTRACT This paper carries out a comprehensive statistical data analysis of the wave condition to simulate a wave transformation model and to be verified by 3D physical model test. It comes to that under such extreme wave condition, the traditional construction techniques cannot accomplish the work on schedule. Therefore, the jack-walking construction platform is proposed as a solution, which is walking on the top of piles to avoid the influence of wave on the operational window of piling works. With the advantage of stability and effectiveness for piling works under extreme wave conditions, it has a broad promotion prospects. INTRODUCTION Hadarom port, as an extension of Ashdod port and Hayovel port in Israel, is designed for Maersk Triple E-class container vessel of more than 18,000 TEU, with an overall length of 400 meters. In general, the work scope of Hadarom port comprises a 60-hectare reclamation container terminal formed by the dredging materials form the channel and harbor basin, a 600-meter extension of the existing main breakwater, an 1480-meter lee breakwater as the revetment for the reclamation area, and an overall 2200-meter quay line for berthing of container vessels and tug boats as shown in the following Fig. 1. Among the above, Quay 28, which is a steel pipe pile-based open platform structure, is in the center of the construction area and parallel to the entrance channel of the port, as shown in the following Fig. 2. Due to the ground treatment of fine sand layer under the main breakwater extension, it makes Quay 28 a critical role in temporary protection against the extreme wave condition. Therefore, 18 3500-ton weighted caissons are applied as retaining wall structure at the rear of the pile-based platform since the caissons are prefabricated and could serve as a temporary protection for the port construction work as quickly as possible.
Artificial Intelligence, ashdod port, caisson, coefficient, construction platform, crawler crane, engineering solution, equation, extreme wave condition, hadarom port, jack-walking construction platform, marine transportation, physical model test, piling work, platform, quay 28, wave condition, wave disturbance coefficient, wave height
Country:
- Asia > China (0.48)
- Asia > Middle East > Israel > Southern District > Ashdod (0.27)
SPE Disciplines:
The Experimental Investigation on the Protections of the Uncompleted Breakwaters Under the Long- Term Wave Conditions in the Open Mediterranean Sea
Peng, Sheng (Technology Center, CCCC Second Harbour Engineering Co.Ltd.) | Feng, Youde (Third Company, CCCC Second Harbour Engineering Co.Ltd.) | Feng, Xiandao (Technology Center, CCCC Second Harbour Engineering Co.Ltd.)
ABSTRACT The present paper describes a 3D physical model study for the new constructed Hadarom Port in Ashdod, Israel. As it is an extension project based on the old harbor, and to reserve the navigation conditions of the exit harbor, the construction of the new harbor would be executed under the extreme wave conditions in the open Mediterranean Sea. The model test study was focus on the performance of the temporary protections of the uncompleted breakwaters during the extreme wave conditions in winter. The stability of the armour layer, including the units on the landward, seaward, crest and toe are investigated, as well as the core layer. The effectiveness temporary protection modes of breakwater roundhead under high frequency and strong waves were discussed, which would provide helpful experience and reference for the engineering construction of similar kind. INTRODUCTION Ashdod Port is Israel's main cargo port and is processing approximately 60% of the countries marine cargo, and which is the 2nd deep water port in Israel. The Port of Ashdod remains one of the few deep-water ports in the world to be built on the open sea. The construction of breakwaters in relatively deep water involved great engineering challenges. The present Stage-3 engineering work of Ashdod Port, involves the extension of the Main Breakwater (MBW) by 600m, the construction of a new LEE Breakwater (LBW) of 1500 meter and the reclamation of 80 hectares, as seen in Figure 1. This extension allows for the construction of 1550 meters of additional quays which shall be capable of handling the largest containers vessels currently in operation (14.500 TEU). As it is an extension project based on the old harbor, and to reserve the navigation conditions of the exit harbor, the construction of the new harbor would be executed under the extreme wave conditions in the open Mediterranean Ocean. In the meanwhile, the total construction periods of the MBW and LBW would be 3~4 years, which means the uncompleted head of the Breakwater would be exposed to the open seas and attacked by the long period large waves, especially for the winter storms from November to the next March.
Industry:
- Transportation > Marine (0.88)
- Transportation > Infrastructure & Services (0.54)
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