绿金杜巴一体化太阳能联合循环电站
Duba ISCC Green Power Plant 1 is a large power infrastructure project located in the northwest of Saudi Arabia, along the Red Sea. The ISCC (Integrated Solar Combined Cycle) technology adds 50 MW of solar power to the gas and steam turbines, generating a total of 500 MW of electricity.
For this project, Dextra supplied Double Corrosion Protection Ground Anchors, used as a permanent anchoring solution for the excavation work preparing the pumping chamber. A total of 264 anchors (Grade 1080/1230, Ø32 & 40 mm) were supplied and installed across four layers.
这 Double Corrosion Protection anchors supplied for this project were pre-grouted at the Dextra factory, applying the first layer of grout between the steel bar and HDPE sleeve. The pre-grouted segments were reconnected on-site using couplers. Pre-grouted anchors not only save time and reduce costs during on-site operations, but they also enhance overall anchor quality by ensuring that the first grout layer is applied in a factory-controlled environment.
现场安装由地基承包商宝华 (BAUER) 进行,该承包商执行钻孔、起重、安装、灌浆和后张拉作业。 Dextra 在安装的早期步骤中通过派遣岩土工程专家团队到现场提供指导。
一般安装顺序如下(如下图所示):
- 从运输架上拆箱后,用耦合器拼接各段,并用热缩套管覆盖。
- 将组装好的锚从组装现场运输到吊装区域(每延米 13 公斤)。
- 锚头处的布线电缆用于控制下降。注浆管也沿着锚预先安装。
- 将30米锚连同注浆管插入钻孔中。
- 灌浆、施力后,将充满油脂的头帽安装在锚头上,保持锚与外界腐蚀性环境完全隔离。
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