This is the 3rd cave-in caused by the Circle Line thus far, with the most severe being the Nicoll Highway cave-in, which killed 4. The latest cave-in happened near Holland Road, measuring 8m by 7m and about 3m deep. Communication lines and water supply were damaged and cut off and this was linked to tunneling works happening at 22m below ground level. Work is now being carried out to mend the cave-in as well as to resume water supply and communication links to the houses affected. No casualties were reported.

There were however, reports that low rumbling noises being heard during the tunneling. In addition, it was confirmed that the ground that caved in was on loose ground. The Circle Link underground tunneling project indeed saw the worse and possibility the most number of reported cave-ins since the MRT project started in the 1980s.

When the Sperling family went to bed on Friday night, a steel sheet had been laid across cracks in the street just outside the driveway of their bungalow, off Holland Road.

By dawn yesterday, a 8m by 7m stretch of Cornwall Gardens had disappeared into a 3m-deep crater.

No one was injured, neither were any homes in the area damaged when the ground sank at about 4.45am, the Land Transport Authority (LTA) said yesterday.

But water supplies to three homes were cut off as the pipes snapped when the road crumbled. Phones, computers and cable TV links were also out at one of the homes because of damaged cables.

The LTA said it arranged for the homes to be supplied drinking water and provided temporary telecommunication links.

The Sperlings, whose driveway was blocked by the repair work, have been put up at Shangri-La Hotel and provided two rental cars.

Yesterday’s cave-in was linked to tunnelling work taking place 22m below ground for a section of the Circle Line, connecting new stations at Holland Village and Farrer Road.

All tunnelling work has been stopped as repairs are carried out, the spokesman added.

The cave-in happened because of ‘loose ground’, said LTA. Its engineers and the contractors for the tunnelling work had been preparing to stabilise the soil in the area when it sank.

Residents in the area say they have experienced vibrations as tunnelling work moved through the area in the last two months.

The Sperlings, who moved into 14 Cornwall Gardens six months ago, said they could hear a constant ‘low rumble’.

Housewife Jane Sperling, 46, who resides in the bungalow with her investment manager husband and three sons, said the rumble was sometimes strong enough to throw open the ceiling vents.

There were other signs.

Another resident in the area, Mr Stephen Wisely, 46, who works in an oil and gas construction company, spotted a small sinkhole in his driveway two months ago, which was later filled in by LTA contractors.

More recently, Ms Mhel Bueno, 35, a domestic help who lives at No.12, had noticed water overflowing from a pipe near the cave-in site.

The LTA said its ‘engineers inspected monitoring instruments that had been installed at the houses and on the ground in the vicinity, and are satisfied that the houses and surrounding area are safe’.

By yesterday evening, most of the crater had been filled in and work was being carried out to strengthen the ground. Repairs to affected utility lines would also start soon.

The LTA apologised for the inconvenience to residents and motorists and said that the stretch of Cornwall Gardens is expected to reopen to traffic by Tuesday.

The sinkhole is the latest setback for the project, the most severe being the 2004 cave-in at the Nicoll Highway tunnel, which killed four.

Last year, four stop-work orders were issued, including for a stretch of a tunnel in Telok Blangah, when part of the road sank.

The LTA said the Cornwall Gardens repairs are not expected to delay progress of the Circle Line which is expected to be completed in stages from 2010 onwards.

Article obtained from on 25th May 2008

Reader's Comments

  1. Hisham | May 25th, 2008 at 12:49 pm

    wah … provided rooms at Shangri-La!!!

  2. SoD | May 25th, 2008 at 9:57 pm

    Consider this sinkhole explanation …
    Though some sink holes are caused by careless deeds of people, or maybe other natural and explainable causes … many of the circular sinkholes occur because of a solid object that was once there in no longer in place … many Ancient Crafts having long since settled undetected below surface… are now of a quickened acceleration, have simply vanished from one place to appear in a higher place ….

    Many people would be surprised to know …. just how much UFOs and other Ancient Celestial Objects are associated with some of Earth’s so called natural disasters … and surprised even more so when the frequency veil surrounding this planet is totally dissolved … proof is in the pudding … we just haven’t received our due portion of the pudding … not just yet …

    Some Ancient Crafts drained of their ‘plasma cores’ had long since settled just beneath earth’s surface, some had settled very deep below surface …. The bigger the craft or object once settled, the bigger the sinkhole left behind when they are plucked away … cloaking barriers kept them undetected … many had searched, but could not find them ….

    SOON… a global trembling of an earthquake measuring an unheard of magnitude, will take place as a matrix opening beneath the ocean floor gives way for the passing through of a mammoth size Structure …. It will be of a glistening Metallic Object of Exotic Material … It will be manually operated …. It is an Ancient Pyramid Power Facility … The Eye of this Pyramid will roar of a powerful Plasma Field of Energy … the roar will be felt as a tremble throughout the planet …. It will elevate itself up to temporarily sit outside of Earth’s atmosphere … not many tall structures will be left standing after this trembling quake …

    I’m just an Old Soul Passing through, given something important to say

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