Malaysia Smart Tunnel

SMART Tunnel

The "Stormwater Management and Road Tunnel" or "SMART Tunnel", is a storm drainage and road structure in Kuala Lumpur, Malaysia, a major national project in the country. The 9.7 km (6.0 miles) tunnel is the longest stormwater tunnel in South East Asia and second longest in Asia.
The main objective of this tunnel is to solve the problem of flash floods in Kuala Lumpur and also to reduce traffic jams along Jalan Sungai Besi and Loke Yew flyover at Pudu during rush hour. There are two components of this tunnel, the stormwater tunnel and motorway tunnel. It is the longest multi-purpose tunnel in the world.
It begins at Kampung Berembang lake near Klang River at Ampang and ends at Taman Desa lake near Kerayong River at Salak South. The project is led by the government, including Malaysian Highway Authority (LLM) and the Department of Irrigation and Drainage Malaysia (Jabatan Pengairan dan Saliran = JPS) and also a company joint venture pact between Gamuda Berhad and Malaysian Mining Corporation Berhad (MMC).
History:
Construction of the tunnel began in 25 November 2003. Two Herrenknecht's Tunnel Boring Machines (TBM) from Germany were used, including "Tuah" on north side and "Gemilang" on south side.
On 11 December 2003, the 13.2 m diameter Mixshield TBM, Tuah, completed a 737 m section after 24 weeks of excavation. By the end of January 2004, Tuah would start a second drive covering a distance of 4.5 km to Kampung Berembang lake. A second TBM, Gemilang, has bored 350 m since getting underway in August 2004. Operated by Wayss & Freytag of Germany, this second Herrenknecht's TBM would drive 5.3 km in the south of the city to Taman Desa lake.
On 22 April 2006, the Gemilang's TBM completed digging on the south side at the Taman Desa outfall, while the Tuah's TBM completed digging in the Kampung Berembang area in 2 April 2007.
The motorway sections on the SMART system was officially opened at 3:00PM, 14 May 2007, after multiple delays.[1] [2]
Meanwhile, the stormwater sections on the SMART system began operations at the end of January 2007.
Three mode tunnel operation
SMART will work on a three mode system. Mode one operates under normal conditions or when rainfall is low such that no water needs to be diverted into the tunnel. Moderate storms activate mode two. This will divert floodwater into a bypass tunnel in the lower section of the motorway tunnel which will remain open to traffic. During the once or twice yearly heavy storms a switch is made to mode three when the tunnel is closed to road traffic and the full tunnel section with a combined capacity of 3 million cubic metres becomes available to divert the dramatically increased flows. Extensive monitoring stations will ensure sufficient time is allocated to allow the last vehicle to exit before the automated watertight gates are opened. The motorway will then reopen to traffic after clearing of the tunnel within 48 hours of closure. We’re helping ensure that the change-over between modes from vehicle to flood use is practical and efficient.

TBM ( Tunnel Boring Machine)

TBM tunnelling

Ground conditions dictated construction by tunnel boring machine which is now under way with two slurry TBMs working in opposite directions from the middle of the tunnel alignment. We helped develop the TBM procurement strategy and produce contract documents to enable the contractor to purchase two 13.2m diameter machines – among the world’s largest in diameter. A ventilation shaft sited near central Kuala Lumpur served as the launch site for the TBMs. The ventilation facilities are located in Limestone rock, with the largest excavation being 150m in length, 20m wide and 28m deep.

The first TBM launching shaft was completed in January 2004 ready for assembly of the first TBM which commenced tunnel boring in June 2004. Shortly after this the second TBM arrived for assembly and commissioning and began tunnelling in August 2004.
Technical specifications:
Stormwater tunnel
• Construction cost: RM1,887 million (US$514.6 million)
• Stormwater tunnel length: 9.7 km (6.0 mi)
• Diameter: 13.2 m (43.3 ft) (outer diameter)
• Tunnelling method: Tunnel Boring Machine (TBM)
• TBM type: Slurry shield.
Motorway tunnel
• Motorway tunnel length: 4 km (2.5 mi)
• Structure type: Double Deck
• Ingress and egress: 1.5 km (0.93 mi) at Jalan Sultan Ismail and Jalan Imbi
• Length: 1.4 km (0.87 mi) at Jalan Tun Razak
• Links: 1.6 km (1 mi) at Kuala Lumpur-Seremban Expressway Links:City Centre
near Kg. Pandan Roundabout KL-Seremban Expressway near Sungai Besi Airport

About TBM:

How far does the TBM moves in a day? What's the furthest achieved?
The TBM moves at an average distance of 10 meters per day. The furthest achieved was about 24 meters, believed to be a world record for this type machine size.
What powers the TBMs?
The TBMs use electricity. Each machine have a connected load of 8.3MW, with incoming voltage at 22kV. This voltage is transformed to lower levels at the machines to meet requirements.
How many people are needed to operate the TBM?

There are about 16 people per shift needed to operate the TBM.
The slurry shield tunnel boring machine consists of four main parts.
The first is the Rotary Cutter Head with tungsten pick bits used for excavation of soil and disc cutters used for the excavation of rock.
The second part of the machine is the Bulkhead located immediately behind the Rotary Cutter Head. This is where the pressured bentonite slurry shield is formed to provide stability during the tunnel excavation.
The third part of this machine consists of hydraulic rams, which are used to propel the machine forward and to keep the tunnel in its right alignment.
The fourth and the last main part of the machine is the tunnel lining erector used to install the pre-cast concrete lining of the tunnel.
Other parts complementing the main Special Features are two boogies on rails that house electrical, slurry pumping, ventilation equipment
and cable and pipes.
The pre-cast concrete linings for the tunnel are transported continuously to the erector by boogies on rails. These linings are then hoisted and placed in the correct position in the tunnel with the help of vacuum pads attached to hydraulics arms. The arms are ex tended to keep the linings in place while the linings are bolted together.
The void between the excavated ground surface and the linings is immediately filled with cement mortar grout under pressurized conditions to ensure all the voids are fully filled.
For SMART, two Slurry Shield machines are used, both starting from the JKR field area in Jalan Chan Sow Lin. The first machine will head North under Jalan Tun Razak and Jalan Desa Pandan before terminating at the pond at Ampang behind
Gleneagles Hospital.
The second machine will head south under the Jalan Chan Sow Lin and the KL-Seremban Highway next to the Sg Besi airfield before terminating at the existing pond in Taman Desa.

Bas Melambung

www.utusan.com.my

‘Objek hitam menerpa saya’ (Petikan Utusan Malaysia)

MELAKA 11 Okt. – Seorang pemandu bas memaklumkan dia ternampak satu objek hitam seperti menerpa di hadapannya sebelum merempuh bas Jabatan Kebajikan Masyarakat (JKM) yang sedang dipandunya.

Umar Yusop, 31, bagaimanapun terselamat dalam kemalangan ngeri yang meragut nyawa 12 orang itu berkata, selepas itu dia tidak sedar apa-apa lagi sehingga dimaklumkan bahawa objek itu adalah bas Ekspres Delima yang terbabas dan melambung dari laluan bertentangan.

“Ketika itu cuaca amat baik. Sebaik sahaja ternampak objek hitam itu, saya segera menekan brek sebelum ia terus merempuh bas yang saya pandu,” katanya.

Umar adalah antara lebih 40 penumpang yang cedera selepas terlibat dalam kemalangan membabitkan dua buah bas, tiga buah kereta dan sebuah van di Kilometer 223, Lebuh Raya Utara Selatan berdekatan Plaza Tol Simpang Ampat dekat Rembau, petang semalam.

Nahas pada pukul 6.50 petang itu berlaku apabila sebuah bas Ekspres Delima yang dipercayai dipandu laju dari arah selatan gagal dikawal lalu terbabas dan melanggar pembahagi lebuh raya sebelum melambung ke laluan bertentangan.

Bas ekspres itu yang dalam perjalanan dari Melaka ke Kuala Lumpur kemudian melanggar sebuah van dan kereta sebelum menghempap dua buah kereta lain.

Ia kemudian bertembung dengan bas dipandu Umar yang ketika itu membawa 36 peserta yang menghadiri Perhimpunan Raksasa ahli Persatuan Bekas Tentera Malaysia (PBTM) di Bukit Jalil.

Bagaimanapun, kesemua 36 penumpang itu dilaporkan selamat.

Mengimbas kembali detik kemalangan ngeri itu, Umar yang telah empat tahun memandu bas JKM berkata, pemanduannya berjalan lancar seperti biasa namun kemalangan itu berlaku begitu pantas.

“Ketika itu, saya memandu seperti biasa dan tidak berasa apa-apa yang pelik sehinggalah kemalangan itu berlaku dalam sekelip mata.

“Walaupun saya cedera di muka, patah tangan kanan dan tulang rusuk, saya bersyukur kerana terselamat dan semua penumpang saya juga tidak mengalami kecederaan,” katanya yang ditempatkan di Wad 1-3 Hospital Melaka di sini.

12 Maut Tragedi Lebuh Raya PLUS Berhampiran Simpang Ampat, Melaka.

Oleh AINOL AMRIZ ISMAIL, FARABI SYED SHEIKH AL-JABRI, RIZANIZAM HAMID dan NORAZLIZA ISMAIL (Utusan Malaysia)
SEREMBAN 10 Okt. – Seramai 12 orang maut, manakala lebih 40 lagi cedera termasuk parah apabila dua buah bas, dua buah kereta dan sebuah van terbabit dalam kemalangan di Kilometer 223, Lebuhraya Utara-Selatan, berdekatan Plaza Tol Simpang Ampat dekat Rembau, petang ini.
Nahas berlaku apabila sebuah bas ekspres Delima yang dipercayai dipandu laju dari arah selatan gagal dikawal lalu terbabas dan melanggar pembahagi lebuh raya sebelum melambung ke laluan bertentangan.

Bas ekspres itu yang dalam perjalanan dari Melaka ke Kuala Lumpur kemudian melanggar sebuah van dan kereta sebelum menghempap dua buah kereta lain dalam kejadian pada 6.50 petang itu.
Pada masa yang sama, sebuah bas Jabatan Kebajikan Masyarakat (JKM) yang dinaiki ahli Persatuan Bekas Tentera Malaysia (PBTM) turut gagal mengelak dan melanggar bas ekspres itu.
Tragedi Oktober itu mengakibatkan puluhan ribu kenderaan terperangkap dalam kesesakan lalu lintas sehingga lewat malam ini apabila pihak berkuasa terpaksa menutup laluan di kedua-dua arah untuk kerja-kerja menyelamat.
Sehingga pukul 11 malam ini, pasukan penyelamat sedang berusaha mengeluarkan mayat mangsa termasuk penumpang bas dan kenderaan yang dihempap oleh bas itu.
Difahamkan, mangsa yang maut adalah pemandu bas dan penumpang serta penumpang dua buah kereta yang terhimpit dihempap bas tersebut.
Pengarah Hospital Tuanku Ja’afar (HTJ) di sini, Dr. Jaafar Che Mat pada sidang akhbar lewat malam ini memaklumkan, pihaknya menerima 24 orang mangsa yang cedera terdiri daripada lapan lelaki dan 16 wanita, kesemuanya dewasa.
Katanya, seorang daripada mangsa telah dihantar ke Hospital Kuala Lumpur (HKL) setelah dilaporkan dalam keadaan kritikal.
Menurut beliau, kesemua mayat dihantar ke Hospital Melaka untuk bedah siasat, manakala mereka yang cedera menerima rawatan di HTJ.
Antara yang dilihat menerima rawatan termasuk seorang pelancong warga Jepun.
Berikutan kemalangan itu, pihak polis telah menutup laluan masuk ke lebuh raya arah selatan di Plaza Tol Pedas, Linggi di Rembau.
Kebanyakan kenderaan yang memasuki lebuh raya dinasihatkan oleh Plus Expressways Berhad (PLUS) untuk menggunakan laluan alternatif.
Sementara itu, Pegawai Turus Trafik negeri, Asisten Supritendan Abd. Halil Hamzah ketika dihubungi malam ini mengesahkan kejadian tersebut dan menurutnya, ketika ini, identiti mangsa yang cedera dan meninggal dunia masih belum diketahui.
Operasi menyelamat masih dijalankan oleh pasukan bomba dan penyelamat, polis, Jabatan Pertahanan Awam Malaysia (JPAM) serta bantuan pihak paramedik dari hospital yang berdekatan.
Dalam pada itu, salah seorang penumpang bas Ekspres Delima yang terselamat, Nur Najlaa Aqilah Mohd. Ghazali, 19, berkata, dia tiba-tiba terasa bas yang dinaikinya berpusing lalu menghempap sebuah kereta selepas melambung ke laluan bertentangan.
“Ketika kejadian, saya sedang tidur. Saya tersedar apabila bas itu berpusing dan menghempap kenderaan di laluan bertentangan. Tidak lama kemudian, bas yang kami naiki dirempuh beberapa kenderaan lain termasuk sebuah bas (membawa ahli PBTM),” kata pelajar Universiti Malaya itu yang kini dirawat di HTJ setelah mengalami kecederaan di tangan dan muka.
Difahamkan, bas JKM membawa peserta yang menghadiri Perhimpunan Raksasa PBTM, turut dinaiki Exco Kerajaan Melaka, Datuk Karim Sulaiman. Bagaimanapun, kesemua penumpang bas itu dilaporkan selamat.