鲁—14井井径变化试验的解释

对鲁－14井井径变化试验的井水位潮汐资源进行了反复调和分析，结果表明试验前后井水位对气压和固体潮的响应改变较小。根据多孔介质渗流理论和弹性理论，对这一现象进行了解释，认为井径变化相当于改变了井水柱的有效高度，从而影响了水井含水层系统的固有振动周期。分析了井孔变径对潮汐信号响应的周期特征，认为在含水层水体很大（含水层水平面积比井孔面积大得多），且含水层的渗透系数也很大的条件下，井径变化对井水位畦体潮响应幅度影响很小。

EXPLANATION FOR RADIUS VARIATION TEST OF WELL LU-14 IN JUNAN,SHANDONG

In order to study the solid tide effect and air pressure effect under the conditions of well radius changing, Well Lu 14 in Junan, Shandong was choosen to make a test. After many harmonic analyses for the tide data of water level of Well Lu 14, it is found that the responses of well water level to pressure and solid tide just have very small change before and after the test. The authors explained this phenomenon with porous medium seepage theory and elastic theory. They thought that in fact changing well radius is equivalent to changing the effective height of well water column which affects the inherent vibration period of the water bearing system; if the column of water bearing bed is very large, and the seepage coefficient is also very large, the effect of well radius variation on the response of well water level to solid tide will be very small.