地下水
地下水
지하수
GROUNDWATER
2015年
3期
24-27,62
,共5页
余期冲%祝晓彬%吴吉春%吴剑锋%杨仪
餘期遲%祝曉彬%吳吉春%吳劍鋒%楊儀
여기충%축효빈%오길춘%오검봉%양의
地下水源热泵系统%地下水热量运移%合理井距
地下水源熱泵繫統%地下水熱量運移%閤理井距
지하수원열빙계통%지하수열량운이%합리정거
Groundwater source heat pump system%groundwater thermal transport and suitable well spacing
基于野外实际地下水源热泵系统和长时间抽灌实验,构建场地水文地质概念模型和水热耦合模型,进行场地地下水温度场数值模拟研究。利用场地群井观测数据对所建模型进行验证,诸观测孔各时段的绝对误差均值为0.38℃,平均相对误差率为2.00%,表明模型模拟结果良好。模型经验证后,预测不同抽灌模式下温度场分布,发现季节性交替抽灌结果优于正常抽灌,但均产生热贯通现象,说明现状抽灌井距(30 m)偏小。设计不同抽灌井距情况模拟回灌井对抽水井的影响,得到研究场地合理井距为50 m。进一步研究渗透系数、热弥散度、抽灌水量和回灌水温差对合理井距的影响,发现抽灌水量和回灌水温差的影响最大。
基于野外實際地下水源熱泵繫統和長時間抽灌實驗,構建場地水文地質概唸模型和水熱耦閤模型,進行場地地下水溫度場數值模擬研究。利用場地群井觀測數據對所建模型進行驗證,諸觀測孔各時段的絕對誤差均值為0.38℃,平均相對誤差率為2.00%,錶明模型模擬結果良好。模型經驗證後,預測不同抽灌模式下溫度場分佈,髮現季節性交替抽灌結果優于正常抽灌,但均產生熱貫通現象,說明現狀抽灌井距(30 m)偏小。設計不同抽灌井距情況模擬迴灌井對抽水井的影響,得到研究場地閤理井距為50 m。進一步研究滲透繫數、熱瀰散度、抽灌水量和迴灌水溫差對閤理井距的影響,髮現抽灌水量和迴灌水溫差的影響最大。
기우야외실제지하수원열빙계통화장시간추관실험,구건장지수문지질개념모형화수열우합모형,진행장지지하수온도장수치모의연구。이용장지군정관측수거대소건모형진행험증,제관측공각시단적절대오차균치위0.38℃,평균상대오차솔위2.00%,표명모형모의결과량호。모형경험증후,예측불동추관모식하온도장분포,발현계절성교체추관결과우우정상추관,단균산생열관통현상,설명현상추관정거(30 m)편소。설계불동추관정거정황모의회관정대추수정적영향,득도연구장지합리정거위50 m。진일보연구삼투계수、열미산도、추관수량화회관수온차대합리정거적영향,발현추관수량화회관수온차적영향최대。
Based on an actual groundwater source heat pump system with a prolonged pumping-recharging test,the paper establishes the hydro-geological conceptual model and groundwater-thermal coupling model to study on simulation distribu-tion of groundwater temperature. The simulated temperatures agree well with the observed values,with an average absolute er-ror of 0. 38℃ and a relative error of 2. 00%. After verification,the model is used to predict the temperature distribution in different pumping and recharging mode. The results show that the seasonal alternate pumping is better than the normal pum-ping but both produce heat transfixion phenomenon,which the reason is shorter of the pumping and recharging well spacing (30m). Different spacing between pumping and recharging well was discussed to understand the influence of recharging well on pumping well and found that suitable well spacing was equal to 50m in the study area. Therefore,several parameters related to the well spacing are discussed in this paper. The quantities of pumping and re-pouring and recharging temperature differ-ence are primary factors.