水电与新能源
水電與新能源
수전여신능원
HYDROPOWER AND NEW ENERGY
2014年
9期
21-23
,共3页
谢承平%王磊%姚阳%黄伟
謝承平%王磊%姚暘%黃偉
사승평%왕뢰%요양%황위
单孔%抽水试验%水位恢复%含水层试验%渗透系数
單孔%抽水試驗%水位恢複%含水層試驗%滲透繫數
단공%추수시험%수위회복%함수층시험%삼투계수
single hole%pumping test%water level recovery%aquifer test%permeability coefficient
抽水试验成本较高,耗时长,而单孔抽水试验获取的试验数据有限,且紊流、井损等因素对水位影响较大,从而影响参数计算精度;同时,实际抽水试验常在多种复杂边界条件下进行,如试验孔有临河时,需结合多种含水层模型,使实际抽水试验条件尽可能与理论模型条件相近,选择合适的模型计算,相互比较验证,求取岩土体渗透系数;将计算成果与有其他水文地质试验结果比较,综合确定渗透系数,进一步提高了岩土体渗透系数的合理性。
抽水試驗成本較高,耗時長,而單孔抽水試驗穫取的試驗數據有限,且紊流、井損等因素對水位影響較大,從而影響參數計算精度;同時,實際抽水試驗常在多種複雜邊界條件下進行,如試驗孔有臨河時,需結閤多種含水層模型,使實際抽水試驗條件儘可能與理論模型條件相近,選擇閤適的模型計算,相互比較驗證,求取巖土體滲透繫數;將計算成果與有其他水文地質試驗結果比較,綜閤確定滲透繫數,進一步提高瞭巖土體滲透繫數的閤理性。
추수시험성본교고,모시장,이단공추수시험획취적시험수거유한,차문류、정손등인소대수위영향교대,종이영향삼수계산정도;동시,실제추수시험상재다충복잡변계조건하진행,여시험공유림하시,수결합다충함수층모형,사실제추수시험조건진가능여이론모형조건상근,선택합괄적모형계산,상호비교험증,구취암토체삼투계수;장계산성과여유기타수문지질시험결과비교,종합학정삼투계수,진일보제고료암토체삼투계수적합이성。
Pumping test is often used to determine the permeability of rocks .However, the pumping test is high-cost and time consuming .Also, the accuracy of the permeability coefficient obtained is often unsatisfying due to the limited data received from the single hole pumping test and influences of turbulent flow and well loss on water level measurement .A permeability analysis based on single hole pumping test with complex boundary conditions is presented .In the analysis, various aquifer models are examined and an appropriate model is chosen to accurately simulate the real conditions of the pumping test .The calculated permeability coefficient is then compared and verified with results from other geologic tests, which confirms its accuracy .