On the base of the study on the hydrogeochemistry at dam area , the author analyzes the last hydrochemistry data of bearing crevice water . from the diagram of piper and the correlation diagram of na / ca and na , it is known that the deep bearing tectonic fracture water is produced by two sources mix , meanwhile it is found out that there is better hydraulic power connection among bore d46 , d503 , d211 , which shows there is better nnw hydraulic power connection at complex zone making up of fault no . 7 , no . 15 and no . 2 在壩區(qū)的水文地球化學(xué)的研究基礎(chǔ)上,整理分析了壩區(qū)以前的承壓裂隙水的水化學(xué)資料,從piper圖、 na ca ? na關(guān)系圖,說明了壩區(qū)深部承壓裂隙水是二源混合的產(chǎn)物,結(jié)合聚類分析表明了壩區(qū)d46 、 d503 、 d211鉆孔之間存在較好水力聯(lián)系,進(jìn)而說明了在壩區(qū)f7與f15斷裂帶以及f2構(gòu)成的復(fù)雜地帶存在北北西向較好的水力聯(lián)系。