Civil / Yang Cheng sends Zhang Hao of reporter He Weijie
On September 9 morning 6 when 15 minutes, be located in Zhongshan of Li bay area road and companies of 8 electric car of south bank road run from opposite directions nature of self-invited conduit of turning happening DN1200 explodes leakage, bring about Zhongshan 8 circumjacent leach are serious, the car of contact and pedestrian give a suffocate suffocate.
The reporter investigates discovery, region of border area of accident ground week appears 6 times to explode at least inside 8 years conduit, after all reason why?
The spot: Business of periphery much home spreads leach, partial household water supply suffers an effect
On September 9 morning 10 when the left and right sides, the reporter sees in the spot, zhongshan leans 8 times south along the street many shop already opened the door in succession do business, these shop are more sell the clothes, show water already come out, merchant people move goods, sweep the seeper inside inn and rubbish.
Graph / Zhang Hao
Zhongshan A of edifice of 8 Li lake a merchant that sells a female clothing tells a reporter, oneself shop just is decorated do not have a few days, encounter conduit to explode slack dip, "We see news says Zhongshan in the morning 8 leach, drove more at 8 o'clock probably come over, shop had been wided into do not come, not little dress also was soaked by water, reckon the loss is not little. Reckon the loss is not little..
The leach impress that reporter basis leaves on wall, there are 10 centimeters about when water is the deepest. The reporter is rough statistic, street of edge of Li lake edifice has 10 shop to be differred at least the leach of degree.
Graph / Zhang Hao
"In the morning Zhongshan most probably water city, want to know the loss of childen's garments market has compensation? See content spreads a lot of money of company bubble is in water, still have first floor mouth of a lot of archives is soggy also, my archives mouth also within an inch of drinks water, soggy business door the loss is very severe! "A business spreads Li sea childen's garments merchant say.
Live in Zhongshan a citizen of street of 8 new rainbow tells a reporter, "The bed prepares gargle to go to work since early in the morning, just began to have bit of water, do not have water later, the head was not washed, still think to did not hand in water to expend cut off the water supply, call ask tap water the company, adjoining home says to explode downstairs conduit, can rinse with mineral water only fall to have. Can rinse with mineral water only fall to have..
In addition, suffer explode leakage influence, 8 public transportation field reach Zhongshan wreath of young green island (linear distance makes an appointment with 250 meters) , a few business spread mainstay line periphery leach, branch of water supply of the area in Guangzhou tap water already arranged official estimate company to show up judge assess caustic, synchronism does feel better to affect masses to pacify the job.
Tap water company: Predict the rush to repair before 12 o'clock ended on September 10 renew water supply
Company of Guangzhou town tap water reports a watch to show external, on September 9 6 when 15 minutes, the cement canal that with have a common boundary of south bank road 8 times some steam builds a factory to be DN1200 to giving a diameter of footpath produces place Zhongshan explode leakage, after staff member of Guangzhou tap water receives a reply, surround to sufferring influence area to carry out safety instantly my, shut-off of water, start work of urgent rush to repair quickly.
Classics investigation, this cartridge igniter leaks to explode naturally. After receiving a reply, staff member of tap water company shows up immediately shut circumjacent valve shut-off of water, in the meantime, attemper through optimizing water supply explode the effect that leakage causes falls lowest.
Company of town tap water already organized construction unit to enter the arena begin work of do rush repairs of 24 hours of uninterrupted pipeline, the rush to repair before 12 o'clock ends and will renew water supply on September 10.
During water supply rush to repair, area user uses Zhongshan of Li bay area near road of 8 road, south bank, Li bay road water is affected somewhat, tap water company already arranged two to send sprinkler uninterrupted to sufferring an effect area undertakes sending water.
The reporter understands from side of tap water company, end before distributing news dispatches, tap water company attempers through providing net water supply, narrow water supply suffers incidence as far as possible. At present business of partial first floor is spread and the user of lowrise layer already restored to use water.
To ensure around dweller uses water, tap water company still installed two to send water the drop in the spot, early childhood to be used for raising outfit water freely to be taken for everybody.
Reporter investigation: Region of border area of accident ground week appears 6 times to explode at least inside 8 years conduit
To the reason of this accident, company of Guangzhou town tap water shows in the response, belong to nature to explode leakage. Alleged " explode naturally leakage " , mean this conduit to explode leakage is not put in construction to wait for factitious element carelessly.
The reporter combs discovery, from 2011 up to now, region of this border area of week of second accident ground already produced self-invited conduit nature many cases to explode leakage incident. Be like: In August 2011, road underground conduit produces east wind on the west explode leakage;
South bank road produced conduit to explode in January 2013 leakage;
In June 2013, same in Zhongshan field of 8 public transportation stations added close a section of a highway to also appear conduit cracked circumstance;
In December 2014, also be in Zhongshan passageway of 8 buses terminal produces self-invited conduit blowout, spew and the flow that give floods 4 driveway for a time, seeper makes an appointment with 10 centimeters greatly;
November 2015, theater of rainbow of Li bay road a diameter 1.2 meters concrete conduit explodes leakage, the waist grows up nearly when seeper is the deepest. Parking lot of underground of the two place inside small plum ave is entered by rapid current fill, nearly 200 cars by dip.
Why can the self-invited conduit of this area often appear to explode naturally leakage?
Catchment expert is analysed to the reporter, cause the reason with dissilient nature of water supply conduit to have a lot of, it is conduit nature ageing, the pipeline that used 20 years of above commonly can appear ageing problem.
The reporter understands from relevant personage of tap water company, the feed pipe net that these at old the city zone happening explodes leakage, belong to high risk conduit for the most part. These conduit tubal age is longer, partial term of service has exceeded half century;
Conduit is in charge of material to be concrete canal, cast-iron pipe to wait, be in charge of material to use a level according to building ministry place to issue, material of this kind of canal already set a project with Yu Xinfu no longer;
Establishment area leaves in a few populous ground, increase as population, tubal net bear pressure insufficient.
With this second explode the Zhongshan that leakage happening nods is 8 times exemple, conduit place uses tubal material to be cast-iron pipe and cement canal here, characteristic of material of casting iron pipe is easy and rustily. Because found a state,earlier resource shorts, concrete conduit conduit becomes what tap water feed pipe to replace data. Characteristic of material of this one canal is, explode every time leakage is " smash sexual fracture " , explode the effect that leakage place produces is particularly big.
Besides the problem of conduit ageing, geological problem also is to affect conduit to explode the one big inducement of leakage. Catchment expert expresses, silty layer of Guangzhou area underground is much, belong to soft foundation, there is a car for a long time to had gone in the conduit of traffic lane transfer to a lower level, once do not get power very easy cartridge igniter;
And the construction of establishment of the subway, road, cop disturbs repeatedly to subterranean foundation, stability of cop of influence water supply moves;
In addition, as the city fast dilate, municipal road ceaselessly extend, rebuild, cause to water supply conduit permanent ride pressure, cause conduit loss.
Be in especially Zhongshan a section of a highway such as road of 8 road, east wind, below the blame motor-driven driveway that the conduit of one's early years builds in driveway both sides, the driveway widens later, but conduit position still did not change, motor-driven car increase brings road surface pressure boost, also be to cause conduit to explode one of inducement of leakage.
In fact, conduit of this kind of tall danger is returned not just consist in Zhongshan 8. Company of Guangzhou town tap water is felt according to GIS system data check conduit to install the information discovery such as material of a particular year, canal, mix in more beautiful area only area of old Li bay, such high risk conduit has many 40.
Old hose of Guangzhou old the city zone is undertaking updating stage by stage
The reporter understands from company of Guangzhou town tap water, begin from 2017, company of Guangzhou town tap water is right conduit of water supply of danger of Gao Feng of 13 main viatic inside Guangzhou center the city zone undertakes transforming updating, always transform length to make an appointment with 4.3 kilometers, involve Xi Hualu, Zhongshan the road such as road and 8 yellow sanded highways.
But this process is not accomplish in one move. It is underground above all tubal network is intricate, tap water staff member expresses, guangzhou underground cop included gas, cable, communication fiber-optic, etc.
If why find oneself place tubal corridor in limited space, assure the on the rails of construction already, want to protect original underground establishment again, need devises careful plan.
In fact, conduit of 8 section section is transforming Zhongshan of this second accident ground stage by stage, at present Zhongshan crossing of street of 8 week door paragraph had transformed end.
Staff member of tap water company expresses, for will faze civilian influence falls to lowest, tap water company is in construction process Shen Zhi careful. For example, they are when construction of and other places of ave of dense to residential area Xi Hualu, small plum, to reduce noise, they increase several construction to nod in this paragraph of road, be versed in with shortening as far as possible period.
Deng Bo of topic figure ｜ is photographed
Editor-in-charge ｜ Hu Xiaoqian
