Anhui a tunnel just opened to traffic on a number of leaky traffic bureau: do not affect safety

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 Anhui a tunnel just opened to traffic on a number of leaky traffic bureau: do not affect safety


On the two days, Anhuis Bozhou friends circle was painted by a small video of a tunnel leak. In the Bozhou Jianan Tunnel, which opened on October 18, cracks appeared in the wall and water flowed out of the cracks, totaling more than 20 places. Bozhou Traffic Bureau responded that the main reason for the seepage is that when the rainwater is drained from the side ditch of the motor lane, part of the rainwater seeps down the wall and seeps out from the settlement joints. It is not a structural problem, nor does it affect the structural safety and use safety.

It is reported that Bozhou Jianan Tunnel is the first river tunnel under Bozhou, with a length of 1180 meters and a total investment of 314.4 billion yuan. It has just been open for more than ten days, and it is only a light rain. There are many quality problems. There are as many as 20 leaking water, which really worries people about the quality and safety of the tunnel.

Bozhou Traffic Bureau responded that the location of the settlement joint where the leakage occurred was not designed with a water stop. The implication is that leakage is a reasonable phenomenon, which will neither affect structural safety nor affect the safety of use.

Originally, this is a rather professional problem, layman is not good at beak placement, but only from the current situation of leakage, the wall was washed down by water, leakage water level is no rule to follow. The public still has reason to doubt that the probabilities are problematic - whether it is a structural problem, a design problem, or a construction problem.

One of the online tutoring questions for architectsexams is How to correctly set settlement joints and expansion joints in tunnel engineering. The answer emphasizes that settlement joints and expansion joints are generally 2 cm wide, and should be firmly filled with asphalt horseshoe grease, and sealed with plastic or rubber water stops. Therefore, if it is true that there is no water stop in the location design, I am afraid it is hard to say that it is a qualified design.

Tunnel waterproof and drainage is an important part of tunnel construction, and tunnel leakage is a common disease. Some of them may be reasonable, such as the submarine tunnel, the daily seepage of less than 10,000 tons is normal. The Qingdao Jiaozhou Bay Tunnel has a daily displacement of 4000 cubic meters. Therefore, the general submarine tunnel and the lake bottom tunnel will set up a number of pumping stations to discharge the water in time.

But this is not to say that because the phenomenon of leakage is common, it can be thrown away. As we all know, most of the construction contents of tunnel engineering are concealed works, once covered, it can not be seen at all on the surface. For example, the lack of steel bars, insufficient concrete coverage, and holes in shotcrete and anchor are difficult to detect unless tested by professional instruments. In the past reports, the tunnel construction was exposed to a lot of tricky problems. What about the Jianan tunnel in Bozhou? Just because of a light rain, the water leakage is serious in the first ten days of traffic. Isnt it a messenger to deliver quality information, which reminds people to pay attention to the possible quality problems through the visual leakage phenomenon? Regardless of the quality problems, since the messenger has sent out the report letter, the relevant departments can not ignore it and have to investigate it. It is too late to check the safety incidents. Source: Beijing News Editor: Li Cong _B11284

But this is not to say that because the phenomenon of leakage is common, it can be thrown away. As we all know, most of the construction contents of tunnel engineering are concealed works, once covered, it can not be seen at all on the surface. For example, the lack of steel bars, insufficient concrete coverage, and holes in shotcrete and anchor are difficult to detect unless tested by professional instruments. In the past reports, the tunnel construction was exposed to a lot of tricky problems.

What about the Jianan tunnel in Bozhou? Just because of a light rain, the water leakage is serious in the first ten days of traffic. Isnt it a messenger to deliver quality information, which reminds people to pay attention to the possible quality problems through the visual leakage phenomenon? Regardless of the quality problems, since the messenger has sent out the report letter, the relevant departments can not ignore it and have to investigate it. It is too late to check the safety incidents.