Through analyzing the condition of the canal , we build corresponding mathematical model and make hydraulic numerical simulation and researches based on hydraulic anti - analysis principle . we verify the causes of serious backwater of the canal , and put forward the rectifying and reforming measures according to the reality of the irrigated area 通过对渠道现状的具体分析，利用水力学问题的反分析原理，建立相应的数学模型，进行水力数值模拟和分析研究，力求探明渠道严重壅水的原因，并根据灌区实际情况提出了整改措施。
Though the water levels cross one section are almost equal , the velocities differ greatly . at the some cross - section , the velocity in the in the quirk may be double as that on the floodplain . the water surface will rise hi the southern branch because of the improper diffluence ratio , if using the designed diffluence col 淮河入海水道河口段水位值横向分布相差无几，而流速的横向变化较大，泓滩平均流速差最大可达一倍以上，在现有的分流口设计条件下，若按设计的南北汊分流比，南分流口有壅水现象发生，如果南汊分流增大到800m ~ 3 / s左右时，则水流较为通畅。
Comparison of water level between measured and computation shows that the local head loss coefficient cannot give head loss by spur dike completely , and the effective area of passage is difficult to be ascertain . for this reason the two methods for water surface profile computation cannot predict the raise of water level upstream the spur dike accurately 计算结果表明，局部水头损失系数并不能完全反映出由于丁坝阻挡所带来的水头损失，而丁坝附近的有效过水面积难以准确地确定，这些导致前两种方法均不能很好地计算出丁坝上游水位的壅高值。
During the emergency flood reason , the state flood control headquarters or its authorized flood control headquarters in provinces , autonomous regions and municipalities directly under the central government shall have the right to take emergency measures against bridges , approaches , wharves and other engineering structures across a river which seriously intercept or block water 在紧急防汛期，国家防汛指挥机构或者其授权的流域、省、自治区、直辖市防汛指挥机构有权对壅水、阻水严重的桥梁、引道、码头和其他跨河工程设施作出紧急处置。
The essence of the kidney ( water ) is to nourish the liver , the liver ( wood ) stores the blood to support the heart , the heat of the heart ( fire ) is to warm the spleen , the spleen ( earth ) transports and transforms the essence of water and grain to supplement the lung , and the lung ( metal ) clears and descends downwards to support the kidney water ? this indicates the relationship of the interpromotion among the five zang organs 肺(金)气清肃下降，可以抑制肝阳的上亢；肝（木）的条达，可以疏泄脾土的壅郁；脾（土）的运化，可以抑止肾水的泛滥；肾（水）的滋润，可以防止心火的亢烈；心（火）的阳热，可以制约肺金的太过，这就是五脏相互制约的关系。
