减压井运行效果影响因素数值分析  

Numerical Analysis on Factors Affecting the Effectiveness of Relief-well

作　　者：李景娟[1,2,3] 杨阳[1,3,4] 段祥宝[1,3] 谢罗峰[1,3] 周鑫[3] 

机构地区：[1]南京水利科学研究院水工所,南京210029 [2]河海大学水利水电学院,南京210098 [3]水利部堤防安全与病害防治工程技术研究中心,郑州450003 [4]镇江市长江河道管理处,江苏镇江212000

出　　处：《长江科学院院报》2016年第5期151-154,共4页Journal of Changjiang River Scientific Research Institute

基　　金：水利部地方安全与病害防治工程技术研究中心开放基金(201506)

摘　　要：针对减压井运行效果,开展数值模拟分析。对减压井贯入深度、井管直径、井间距、出水口高程以及滤层透水性等因素,进行二维渗流有限元计算,分析各个因素对减压井淤堵的作用大小及影响规律。计算结果表明:减压井贯入深度与滤层透水性对其效果影响很大,且随着贯入深度增加,滤层透水性增高,减压井出水效果逐渐提升;井管直径对井效影响较小,直径越大减压效果越好,但提升幅度不大;井间距和出水口高程对减压效果影响不大。To obtain the effectiveness of relief-well, we performed two-dimensional seepage calculations on factors inclusive of penetration depth, pipe diameter, spacing, outlet elevation and filter-layer permeability by finite ele- ment method. According to the calculation results, we analyzed the effect of each factor on relief-well clogging and the influence regularities as follows： the penetration depth and filter-layer＇ s permeability have great impact on re- lief-well, and with the increase of penetration depth and filter-layer＇ s permeability, the effectiveness of relief-well gradually enhanced; pipe diameter has less effect on the relief-well, with the increase of pipe diameter, the effec- tiveness of relief-well gradually improved, but not much. The spacing between relief-wells and the elevation of outlet have not much influence on the effectiveness of relief-well.

关 键 词：减压井 运行效果 有限单元法 贯入深度 透水性 

分 类 号：TV871[水利工程—水利水电工程] TV223.4