City lacks un­der­ground space plans

Viet Nam News - - NATIONAL -

“Un­der­ground con­struc­tion ac­counts for around 20 – 25 per cent of works in a mod­ern ur­ban area. The mas­ter plan must link many dif­fer­ent un­der­ground works.”

HCM CITY — HCM City lags far be­hind mod­ern ur­ban ar­eas in its un­der­ground space mas­ter plan, ex­perts said.

“The city has no com­pre­hen­sive mas­ter plan for un­der­ground space and there is no clear de­vel­op­ment trend,” said Dr. Voõ Kim Cöông, for­mer deputy chief ar­chi­tect of the city.

“The mas­ter plan faces prob­lems in many ar­eas, in­clud­ing con­tent, tech­niques, data­base, in­put in­for­ma­tion and staff,” he added.

Dr Nguyeãn Khaùnh Laân, a lec­turer on metro lines and rail­ways at the the city Trans­port Univer­sity, said: “Un­der­ground con­struc­tion ac­counts for around 20 – 25 per cent of works in a mod­ern ur­ban area. The mas­ter plan must link many dif­fer­ent un­der­ground works.”

To ef­fec­tively de­velop un­der­ground space, the first de­mand is a data­base on the ter­rain and the use of hy­dro­graphic ge­ol­ogy. But au­thor­i­ties face a short­age of in­for­ma­tion about un­der­ground work, and as a re­sult, costs have in­creased.

“A data­base is very im­por­tant. In HCM City, most bid­ders must ac­cept the fact that they don’t know what they have to face or how risky con­struc­tion might be,” Dr. Phan Höõu Duy Quoác of Ja­panese-based Shimizu said.

“Many un­der­ground con­struc­tion projects have had to change their de­sign, which dif­fered from what was ini­tially ap­proved, but they didn’t up­date the in­for­ma­tion af­ter they com­pleted con­struc­tion,” he said.

Ex­pert Haø Ngoïc Tröôøng from the city’s Union of Sci­ence and Tech­nol­ogy As­so­ci­a­tions said that in 2010 he had been as­signed to study 141 “fa­tal holes”, or lack of in­for­ma­tion, in HCM City.

“I had to work with 15 man­age­ment of­fices, in­clud­ing elec­tric­ity, wa­ter sup­ply, in­ter­net, and ca­ble of­fices which had un­der­ground work. I asked them to share their data­bases, but they all re­fused, say­ing it would cost too much,” he said.

As a re­sult, he had to spend nine months in­stead of the pre­vi­ously es­ti­mated six months to seek the in­for­ma­tion.

“It’s time for the city’s Party Com­mit­tee and Peo­ple’s Com­mit­tee to re­lease a pol­icy and reg­u­la­tions on data­base man­age­ment,” Dr. Cöông said.

“The metro sys­tem has forced au­thor­i­ties to com­plete an un­der­ground space mas­ter plan soon,” Hoaøng Tuøng, deputy di­rec­tor of the mu­nic­i­pal Mas­ter Plan­ning and Ar­chi­tec­ture De­part­ment, said.

In the first stage, the de­part­ment will im­ple­ment a mas­ter plan for 930 hectares down­town, along with a metro sys­tem and the Thuû Thieâm New Ur­ban Area.

Within th­ese 930 hectares are many high-rise build­ings with a base­ment area larger than 11 hectares, along with four un­der­ground park­ing places.

The HCM City ur­ban rail­way sys­tem has eight metro lines with 73 km and 72 sta­tions un­der­ground, in­clud­ing the Beán Thaønh Metro Cen­tre, an un­der­ground com­plex.

“The city’s Peo­ple’s Com­mit­tee has as­signed the de­part­ment to com­plete the first stage of an un­der­ground space mas­ter plan by 2019. This is a big chal­lenge for us,” Tuøng added. — VNS


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