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Sinkhole probe goes hi-tech

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City engineers have been attracting attention in the Rama IV area as they use their high-tech gadgets to try to find what caused a Sunday's large sinkhole.

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A camera-equipped robot has been used to examine a 40-year-old drainage tunnel running under Rama IV road. KOSOL NAKACHOL

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Sinkhole probe goes hi-tech

City engineers have been attracting considerable attention in the Rama IV area as they use their high-tech gadgets to try to find what caused Sunday's large sinkhole.

Above ground they were seen yesterday wheeling a bulky ground penetrating radar (GPR) system down the middle of the road between Lumpini Tower and the Thai-Belgium Bridge.

Their underground work has been more productive, however. Using a robot equipped with a CCTV camera to inspect a four-decade-old tunnel which runs under the damaged area, engineers have found a small hole which might be related to the subsidence.  

Adisak Khantee, deputy director of the Bangkok Metropolitan Authority’s Department of Drainage and Sewerage said the hole, which is about 5-8cm in diameter, allowed water to flow into the tunnel.

The hole was in the upper part of the tunnel and water flowing into it was fairly clean with no soil or sand mixed with it, said Mr Adisak.

It was unusual for a hole to appear in the upper part a drainage tunnel, he noted.

The BMA suspects the hole could have been caused accidentally during road work.

Officials from the Bangkok Metropolitan Administration use ground penetrating radar (GPR) to check a section of Rama IV Road, starting from Lumpini Tower to the Thai-Belgium Bridge. SOMCHAI POOMLARD

Department chief Sanya Cheenimit said he could not determine whether the hole was the cause of the sinkhole which appeared on Sunday. He added that he would report the leak to BMA executives.

Deputy Bangkok Governor Teerachon Manomaiphiboon, who supervises  the BMA's public works, said the entire length of Rama IV Road, except where the sinkhole occurred, has been laid with reinforced concrete.

He has ordered the Public Works Department and the Pathumwan district office to check on contractors who have been hired recently to carry out work near the sinkhole's location. The two agencies would then check whether any repair work was up to standard or not.

If the work is found to be substandard, the firm would be put on a BMA blacklist, he said.

Adapted from a story in today's Bangkok Post by Supoj Wancharoen. You can read the original story here:

drainage – the process of taking away of water or other liquids from an area  การระบายน้ำ
tunnel – an underground passage อุโมงค์
sinkhole – a large hole in the ground, created over a long period of time, especially by water หลุมยุบ
hi-tech (high-tech) – using the most modern methods and machines, especially electronic ones  ซึ่งใช้เทคโนโลยีชั้นสูง
probe – an investigation  การสอบสวน
attract – to cause someone to be interested in something ดึงดูดความสนใจ
considerable – large in size, amount, or degree ค่อนข้างมาก
attention – interest, especially interest that the public has in a person, event, situation etc ความสนใจ
gadget – a small tool or piece of equipment that does something useful or impressive   อุปกรณ์ขนาดเล็ก, กลไกขนาดเล็ก
wheel – to push or pull something that has wheels กลิ้งบนล้อ
bulky – large and difficult to move or carry  เทอะทะ, ค่อนข้างใหญ่โต,
penetrate – to go into or through something แทรกซึมเข้าไป, ผ่านเข้าไป, ทะลุเข้าไป
productive – achieving good results ที่ก่อให้เกิดผล
decade – a period of ten years  ทศวรรษ
related to – to be connected with something/somebody เชื่อมโยงกับ
subsidence – the process by which an area of land sinks to a lower level than normal, or by which a building sinks into the ground การทรุดตัวลง
deputy – a person whose rank is immediately below that of the leader of an organisation รอง
Bangkok Metropolitan Administration (BMA) – the local government of Bangkok กรุงเทพมหานคร
Department of Drainage and Sewerage – The Bangkok city department in charge of draining rainwater and maintaining the city's sewer system สำนักการระบายน้ำ
diameter - the length of a straight line that reaches from one point on the edge of a round shape or object, through its center, to a point on the opposite edge เส้นผ่าศูนย์กลาง
flow – (of a liquid) to move continuously in one direction ไหล
fairly – to some degree, but not completely or extremely พอควร
soil – the substance on the surface of the Earth in which plants grow ดิน
suspect – to believe that something is true or might be true สงสัย
determine – to discover something by examining evidence to or calculate something กำหนด, ระบุ, แสดงผล
appear – to be seen; to start to be seen ปรากฏตัว
leak – (of a liquid or gas) flowing out of a hole or crack การรั่วไหล
executive – a senior manager in a business or other organisation ผู้บริหาร
supervise – to be in charge of an activity and to check that everything is being done correctly  ดูแล ควบคุม
public works – building projects such as schools, roads, and railways that are built and paid for by the government การโยธาสาธารณะ, สิ่งก่อสร้าง (ถนนหนทาง,เขื่อนที่ทำการไปรษณีย์และอื่น ๆ) ที่เป็นสาธารณูปโภค
occur – to happen เกิดขึ้น
reinforce – to make stronger เสริมให้แข็งแรงขึ้น
contractor – a person or company whose job is to do work for another person, organisation, company, etc. ผู้รับเหมา
hire – to pay someone to work for you, especially for a short time จ้าง
location – where someone or something is ที่ตั้ง,ทำเล
repair – to fix something that is broken or damaged ซ่อมบำรุง
standard – a level of quality that is normal or acceptable for a particular person or in a particular situation มาตรฐาน, บรรทัดฐาน
substandard – not as good as you would normally expect, or not good enough to be accepted ต่ำกว่ามาตราฐาน
firm – a business or company บริษัท
blacklist – a list of the names of people, companies, products or countries that an organization or a government considers unacceptable and that must be avoided บัญชีดำ,  รายชื่อผู้ที่รัฐบาลไม่ยอมรับหรือต้องถูกหลีกเลี่ยง


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