水(Shui)利(Li)河(He)道(Dao)治(Zhi)理(Li)工(Gong)程(Cheng)：(?)防(Fang)洪(Hong)工(Gong)程(Cheng)主(Zhu)要(Yao)用(Yong)于(Yu)防(Fang)止(Zhi)洪(Hong)水(Shui)灾(Zai)害(Hai)，(?)包(Bao)括(Kuo)堤(Di)防(Fang),水(Shui)库(Ku)、(?)分(Fen)洪(Hong)区(Qu)等(Deng)。(?)堤(Di)防(Fang)是(Shi)通(Tong)过(Guo)修(Xiu)建(Jian)堤(Di)坝(Ba)来(Lai)阻(Zu)挡(Dang)洪(Hong)水(Shui)侵(Qin)袭(Xi)的(De)工(Gong)程(Cheng)措(Cuo)施(Shi)，(?)水(Shui)库(Ku)则(Ze)是(Shi)通(Tong)过(Guo)蓄(Xu)水(Shui)来(Lai)调(Diao)节(Jie)洪(Hong)水(Shui)流(Liu)量(Liang)，(?)削(Xiao)减(Jian)洪(Hong)峰(Feng)，(?)保(Bao)护(Hu)下(Xia)游(You)地(Di)区(Qu)的(De)安(An)全(Quan)。(?)分(Fen)洪(Hong)区(Qu)则(Ze)是(Shi)在(Zai)洪(Hong)水(Shui)来(Lai)临(Lin)时(Shi)，(?)通(Tong)过(Guo)分(Fen)洪(Hong)道(Dao)将(Jiang)部(Bu)分(Fen)洪(Hong)水(Shui)引(Yin)入(Ru)特(Te)定(Ding)区(Qu)域(Yu)，(?)以(Yi)减(Jian)轻(Qing)下(Xia)游(You)防(Fang)洪(Hong)负(Fu)担(Dan)。(?)防(Fang)洪(Hong)工(Gong)程(Cheng)的(De)特(Te)点(Dian)是(Shi)具(Ju)有(You)较(Jiao)强(Qiang)的(De)针(Zhen)对(Dui)性(Xing)和(He)应(Ying)急(Ji)性(Xing)，(?)能(Neng)够(Gou)在(Zai)关(Guan)键(Jian)时(Shi)刻(Ke)发(Fa)挥(Hui)重(Zhong)要(Yao)作(Zuo)用(Yong)。(?)