水资源保护Issue(3)：40-45,6.DOI:10.3880/j.issn.10046933.2015.03.008
西安与咸阳孔隙型热储尾水回灌堵塞机理对比
Comparison of clogging mechanism of pore-type heat storage tail water recharge in Xi’ an and Xianyang
摘要
Abstract
Based on the analysis of the differences of the geological conditions, the environmental characteristics of heat storage and hydrochemical type between Xi ’ an City and Xianyang City, the author of this paper made a comparative study on the clogging mechanism of pore-type heat storage tail water recharge in Xi’ an and Xianyang by coupling methods such as the hydrogeochemical theoretical simulation ( PHREEQC ) , indoor simulation experiment of blockage and field recharge test.The results of dynamic core displacement test show that the blockage rates in the Xi’ an recharge simulation experiment were larger than that of Xianyang No.1 Well under the same temperature.The comparison of chemical plugging and microorganism blockage in the two areas shows that there is a larger amount of iron in the water of Xi’ an recharge well, and a lot of iron bacteria and iron minerals would be produced in the recharge process, while there is little impact on the water caused by iron minerals in Xianyang recharge well.Studies have shown that, in an open environment the Fe2+in the groundwater and the O in the air occurs oxidation reaction, producing some precipi-tation of mineral such as Fe2 O3 and Fe ( OH) 3 , etc.A blockage is caused after these gelatinous precipitate go into the geological strata.The experiment shows that the suitability of reinjection formation in the Xi’ an Sanqiao recharge well is less than that of Xianyang NO.1 recharge well, and the open recharge way of the Xi’ an Sanqiao recharge well increases the chemical and microbiological clogging.关键词
孔隙型热储流体/回灌/堵塞机理/地热资源/西安市/咸阳市Key words
pore-type heat storage fluid/recharge/clogging mechanism/geothermal resources/Xi ’ an City/Xianyang City分类
天文与地球科学引用本文复制引用
郑磊,马致远,郑会菊,何丹,李妍..西安与咸阳孔隙型热储尾水回灌堵塞机理对比[J].水资源保护,2015,(3):40-45,6.基金项目
陕西省财政厅科技项目（20130422）；陕西省自然科学基础研究计划 （）
