Prevent or control flood this thing, divide a water level commonly: Fortify water level, warning line, assure water level.
Fortify water level is Jiang Shui commonly when going up to bank base, at that time Jiangshui and ground are made the same score almost neat, had begun to have bit of risk. Jiang Shui erodes directly bank base, the likelihood draws out empty bank base to bring about levee to break down collapse, arrived so this water level, concerned branch begins to detect closely levee state, but at this moment the risk is not big, still do not need the bank on the liberation army and common people commonly.
Warning line when, jiang Shui is general already prep above ground is very much, at that time Jiang Shui can pass subterranean ant acupuncture point, rat hole ooze crosses levee, appear from the ground come, begin to just risk Huang Shui, extensive slop, develop subterranean channel bigger more as running water, can bubble toot is gushing like fountain come. If still do not have seasonable discovery to deal with at this moment, very fast Jiang Shui can draw out underground empty, cannot bear at this moment the dikes and dams above, levee can break down, the flood is swarmed into from breach can cause monstrous disaster. This kind emerges water does not happen by levee certainly, farthermost likelihood is in 500 meters outside. So once arrived this water level, the government can organize the bank on cadre masses, 24 hours of go on a tour of inspection are in charge of this kind emerge. Go on a tour of inspection when it is a few people discharge a gleam of commonly, go along levee, everybody is responsible before 5 go to 10 meters.
Similar examination of board of this kind of aircraft carrier. Such examination every 34 hours are about to come. 98 years my pa and several kin observed two months on levee, want such go on a tour of inspection a few times everyday. There are on 1000 kilometers on the Yangtse River at that time dike to exceed warning line, and each kilometer has uninterrupted like such person in our home go on a tour of inspection. The liberation army is on call beside the bank also, discovered Guan Chong is about to go up rapidly stem.
And assure water level, just as its name implies is namely under this water level, do not give an issue through taking strict precautions against defend to the last to be able to assure levee. But in above of this water level, not be manpower place was reached completely any more, return so that see one part lot. If appear,be in charge of at this moment it is exceeding and dangerous to emerge, likelihood hour or half hours of one levee collapsed, not proper there's still time is saved. You see in TV the liberation army jumps into water to build person wall, back gunny-bag, it is commonly at that time. Above of this water level uses human life and God namely hazardous.
Still have actually 4 water level, flood discharge water level. This water level won't be reached actually commonly, because arrived this water level, levee is defeated surely, be not manpower to be able to be redeemed, want forecast of city of a few keys to be able to reach this water level only so, flood discharge area of upper reaches opens levee with respect to can active blast, let the flood flood flood diversion area, will make sure downstream key city is safe, make a loss so of course very disastrous. 98 years when, area of flood diversion of chaste tree river has made up in the bank dynamite, final flood peak under flood discharge water level a few centimeters, did not blow up flood diversion.
Luo Li Suo said so much, basically be to help big housekeeping fact have a perceptual knowledge:
The Yichang that is in from 3 gorge paragraph in light of, the flood is far 2010 bigger than 1998. 1998 Yichang most the cataclysm measures 63600 stere every second, 2010 Yichang most the cataclysm measures 70 thousand stere every second. A what concept is this? Common saying says " 10 thousand lis of the Yangtse River, be in nearly Jing Jiang " the Jing Jiang with the most dangerous the Yangtse River paragraph the biggest can susceptive flood is 70 thousand stere every second. As a result of Jing Jiang Duan Zaiyi prosperous is downstream. The flood of Yichang measured Jing Jiang to increase even many. So if do not have 3 gorge, can say levee of chaste tree river is defeated surely 2010! Area of flood diversion of chaste tree river must flood diversion!
But we had 3 gorge 2010, it blocked 70 thousand stere the flood peak of every second, swim downward only give off 40 thousand stere every second, far under Jing Jiang paragraph bear force. Although 2010 flood peak are far,be more than as a result 1998, but Jing Jiang paragraph did not exceed warning line unexpectedly, go on a tour of inspection of the masses that join a group need not, more do not talk to go up on the liberation army. As contrast, chaste tree Jiang Duanchao crossed warning line 60 days 1998 above, still assure water level 12 days more than above. So everybody has listened to 98 floods, do not have a few people to had listened however 2010 the flood. 3 gorge prevented the flood, be won't somebody knows, because since do not have the flood, that is not news, won't be in the news.
Battle of be apt to person, without illustrious result.
