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干扰系数表征了开采井受干扰的程度,其除受含水层性质、补给、排泄条件等天然因素影响外,还与井的结构和数量、井间距以及在平面上的布置等人为因素有关,因为试验复杂、成本高,一般多在水源地的勘探和开采阶段通过抽水试验求得。本文以甘肃省张掖电厂黑河滩水源地“探采结合”勘探实例,在单孔、干扰和群孔开采性抽水试验的基础上,准确计算干扰系数等水文地质参数,提出技术经济合理的开采方案,并通过探采生产井的优化布置,达到单井及井群出水量大、出水稳定、井间距小、井间干扰小,易于水源地管理保护和节约建设投资的目的。
Interference coefficients characterize the extent to which the production well is disturbed, which is not only affected by natural factors such as the nature of the aquifer, recharge and discharge conditions, but also human factors such as the structure and number of wells, well spacing and placement in the plane The tests are complex and costly, and are usually obtained by pumping tests during the exploration and exploitation stages of water sources. Based on the exploration example of “exploration and mining combined with water” in Hehetan water source area of Zhangye Power Plant in Gansu Province, based on the single-hole, interference and group-hole exploratory pumping tests, the hydrogeological parameters such as interference coefficient are accurately calculated and the technically and economically reasonable mining scheme , And through the exploration and production of production wells optimized layout, to achieve a single well and well group large amount of water, water stability, well spacing is small, interference between wells is small, easy water source management and conservation and saving construction investment purposes.