CAJ | 학술논문

在分析西安与咸阳两市地质条件、热储环境特征和水化学类型的差异的基础上，采用水文地球化学理论模拟、室内堵塞模拟试验及现场回灌试验多种方法耦合的方法，对西安、咸阳孔隙型热储尾水回灌堵塞机理进行对比研究。动态岩心驱替试验结果表明，在同一温度下，西安回灌模拟试验各个堵塞率均大于咸阳回灌一号井堵塞率。两地化学、微生物堵塞对比显示，西安回灌井水体含铁量高，在回灌过程中产生大量铁细菌及铁类矿物黏泥，而咸阳回灌井水体铁类矿物影响微乎其微。研究表明，在开放环境下，地下水中Fe2＋与空气中的O发生氧化反应生成Fe2O3和Fe（OH）3等矿物沉淀，这些胶状沉淀物进入地层后造成了堵塞。试验表明，西安三桥回灌井回灌地层适宜性不及咸阳回灌一号井；且西安三桥回灌井开放式回灌方式加重了化学、微生物堵塞。
재분석서안여함양량시지질조건、열저배경특정화수화학류형적차이적기출상，채용수문지구화학이론모의、실내도새모의시험급현장회관시험다충방법우합적방법，대서안、함양공극형열저미수회관도새궤리진행대비연구。동태암심구체시험결과표명，재동일온도하，서안회관모의시험각개도새솔균대우함양회관일호정도새솔。량지화학、미생물도새대비현시，서안회관정수체함철량고，재회관과정중산생대량철세균급철류광물점니，이함양회관정수체철류광물영향미호기미。연구표명，재개방배경하，지하수중Fe2＋여공기중적O발생양화반응생성Fe2O3화Fe（OH）3등광물침정，저사효상침정물진입지층후조성료도새。시험표명，서안삼교회관정회관지층괄의성불급함양회관일호정；차서안삼교회관정개방식회관방식가중료화학、미생물도새。
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.