| 预测松散含水层单井涌水量的水文测井模型及应用效果 |
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| 引用本文： | 任履兆.预测松散含水层单井涌水量的水文测井模型及应用效果[J].物探与化探,1991,15(2):106-115. |
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| 作者姓名： | 任履兆 |
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| 作者单位： | 河南省水文一队 |
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| 摘 要： | 本文从孔隙度定义出发,引入孔隙流体压缩性系数,根据地下水渗流场连续性原理,推导了应用水文测井参数:视电阻率、自然电位、自然伽玛计算含水层给水度和单井涌水量的数学模型.探讨了影响模型计算参数的主要因素,即可动水系数随深度变化的指数规律、有效孔隙度、岩性及测井判定岩性的方法与经验公式、井径、水位降深等.并以足够多的实际资料采用最小二乘法原理确定了模型系数值,编辑了模型计算的综合性程序,实现了通过水文测井系统,定量和微机化计算水文地质参数的有效途径,预测模型扩大了水文测井的应用范围.令人满意的实际使用效果肯定了模型与方法的正确性和较强的实用价值.
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| 关 键 词： | 地下水 涌水量 测井 模型 |
A HYDROLOGIC LOGCING MODEL FOR PREDICTINGWATER-YIELD PER WELL IN LOOSE AQUIFERAND ITS APPLICATION RESULT |
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| Institution: | No. 1 Hdrogeology and Engineering Geology Party of Henan Proince |
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| Abstract: | Starting from the definition of porosity and introducing coefficient ofpore fluid compressibility, this paper, based on the principle of continuity ofgroundwater vadose field, has derived parameters for hydrologic logging, i. e.apparent resistivity, selfpotential and gamma-ray, and with these parametersformulated a mathematic model for calculating water supply of aquifer andwater-yield per well. The major factors affecting calculation lparameters ofthe model include eaponeatial law reflecting variation in movable water systemwith depth, effective porosity, lithologic characters and method as well asempirical formula for judging lithologic characters by logging, diameter ofwell and fall of water level. With sufficient practical data and using methodof the least square, we have determined the coefficient of the model anddesigned an integrated program for model calculation, thus opening up aneffective way for quantitative and microcomputerized calculation of hydrogeo-logic parameters through hydrologic logging system. The prognostic modelwill extend the application of hydrologic logging. The satisfactory resultsobtained demonstrate the correctness of the model and its great practicalvalue. |
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