地下水径向稳定混合流单井排放诱发地表位移的精密计算

基于地下水径向渗流单井排放诱发的地表位移的一般公式，结合地下水径向稳定混合流的降深表达式，导出了在均质含水层潜水井和承压井两种情况下的地下水稳定混合流单井排放诱发地表位移的解析表达式，讨论了所求表达式的数值积分计算方案，并以２０个节点的Ｈｅｒｍｉｔｅ求积公式编制了计算程序，并以实例验证了本文方法的可行性。本文研究为在地下水稳定混合流场地区进行高精度动态大地测量时定量考虑地下水排放产生的地壳形变影响

ACCURATE CALCULATION ON CRUSTAL DEFORMATION INDUCED BY SINGLE WELL WITHDRAWAL OF RADIAL MIXED STEADY UNDERGROUND WATER FLOW

With the general formulae of crustal deformation caused by groundwater with-drawal of a single weel in the radial direction and drawdown expression of groundwatertable of radial mixed steady flow, we have derived the analytic expressions of surfacedisplacement induced by single well drainage on mixed steady groundwater flow inphreatic water well and confined well in uniform aquifers. Meanwhile the numerical in-tegration scheme of those expressions has been studied. The corresponding calculationprogrammes have been made out by using Hermite's integral formula with 20 nodalpoints. As well we have done some simuiated calculation examples which can prove themethod we have introduced to be possible. That is to say that we have laid a foundationof considering of quantitative crustal deformation due to the groundwater withdrawalwhile high precision dynamic geodetic measure is going on in the places of groundwatermixed steady flow field.