德克斯达集团|可靠的连接

墨尔本地铁

墨尔本地铁:五个新地铁站

墨尔本大都会铁路服务运营着226列六节车厢列车,覆盖998公里的轨道。该地铁拥有15条线路和222个车站,每天为全市超过40万名乘客提供服务。

2017 年,宣布修建一条 9 公里长的隧道和五个新的地下车站,以增加容量并扩大该市郊区的覆盖范围。

该项目于 2018 年开始施工。Dextra 参与了该项目,为车站的结构提供钢筋连接器和全自动钢筋准备设备。 钢筋/增强筋 作品。

Griptec 耦合器因其在拉伸、压缩和疲劳方面无与伦比的性能而被选中,共交付了 400,000 台。

此外,Dextra 还提供:

  • 5,300 玻璃纤维增强聚合物 Astec组合螺栓 — 这些是在CBD岩洞施工现场使用的。岩洞宽度19米,可以建造两条7米长的常规隧道,这些隧道与中间段平行建造,中间段由 玻璃纤维增强聚合物 CB 螺栓,可以切割以拓宽廊道。
  • 2,400 玻璃纤维增强聚合物 Geotec GR45 – 25毫米 销钉 — 每条长 11.8 米,这些 销钉 用于固定挖掘面。
  • 900 玻璃纤维增强聚合物 Astec 土钉 ST50 – 41 — 这些措施用于保护几个在建车站。其中一些车站超出了项目边界,因为 玻璃纤维增强聚合物 可以留在地面上,以后可以轻松砍伐。
  • 16 柔眼 — 安装在五个车站的D-Wall和钻孔桩中。

Dextra 提供支持并分享其专业知识 玻璃纤维增强聚合物 在设计阶段,生产定制形状 玻璃纤维增强聚合物 满足业主期望的解决方案。由于可切割性 玻璃纤维增强聚合物,TBM 可以在最短的时间内穿过 D-Wall 而不会造成损坏。

地铁隧道及其新车站预计将于 2025 年通车,预计将成为该市的新地标。

(照片来源:Hugh Llewelyn,网址:https://bit.ly/2S0kbAG)

晓星液化石油气洞室

Hyosung LPG Cavern: A Large-Scale Petrochemical Storage Project

This multi-phase project, developed by Hyosung Group, includes the construction of:

  • A propane dehydrogenation (PDH) production plant
  • A polypropylene (PP) plant
  • A liquefied petroleum gas (LPG) storage tank
  • Warehouses for LPG and petrochemical products

The entire complex will span 60 hectares within the Cai Mep Industrial Zone in Ba Ria-Vung Tau, near Ho Chi Minh City, Vietnam.

Dextra is supporting the construction of the 240,000-ton LPG underground storage facility by supplying 30,000 units of glass fiber-reinforced polymer (GFRP) rock bolts. These bolts are used to consolidate the cavern rock face around the 150-meter-deep excavation area.

To effectively prevent oil leakage, seawater will be injected into the surrounding rock, creating a water curtain. Given the highly corrosive environment, GFRP rock bolts are the ideal solution due to their corrosion resistance.

Advantages of Dextra GFRP Rock Bolts:

  • Cuttable mining anchors based on fully threaded GFRP tendons
  • Available in seven diameters (ranging from 20 mm to 40 mm)
  • Delivered with GFRP plates and nuts
  • Lightweight, making them easy to handle, transport, and install inside the tunnel

这些设施预计将于 2020 年开始商业运营。

深隧道污水处理系统 (DTSS) – 第 2 阶段

深隧道污水处理系统 (DTSS) – 第 2 阶段

The Deep Tunnel Sewerage System (DTSS) is a used water infrastructure project being developed by the Public Utilities Board (PUB) of Singapore to meet the country’s long-term clean water needs.

DTSS deploys deep tunnels to convey used water to 3 centralised water reclamation plants (WRP) located in the coastal areas.

The used water is then treated and further purified into clean water to be supplied under the brand name NEWater, with excess treated effluent discharged to the sea through outfall pipes.

The project involves the construction of two large tunnels, 6.5m in diameter and with a total length of 80km, located about 50m below the surface, to carry sewage to 3 centralised WRPs.

The project is developed in two phases. The first phase was completed in 2008 and comprises a 48km-long underground tunnel system to channel the flow of water from existing gravity sewers to the Changi WRP in the east and Kranji WRP in the north.

The second phase will extend the tunnel system to the west through a 30km-long south tunnel, 60km of link sewers, the Tuas WRP and a 12-km deep-sea outfall.

For the second phase, Dextra supplied 1,210 rock bolts for stabilising the tunnel excavations and 8 GFRP 软眼 for TBM breakthrough.

Soft Eye & Rock Bolt

第二阶段预计于 2022 年完成后,大士水处理厂的 NEWater 工厂将满足新加坡总用水需求 55%。

此外,Tuas WRP 每天将处理 800,000 立方米的废水,使其成为世界上最大的膜生物反应器设施。