碩士 / 嘉南藥理科技大學 / 溫泉產業研究所 / 100 / The spa industry flourishes in Jiaosi hot-spring area because of its
excellent spring quality and habitation at the plains with convenient
transportation. However, excessive development made its temperature
drop and the range smaller. This might cause the competing for the spring
or the drying of the spring that prevents the continuing operation. In this
study, 13 monitoring wells in Jiaosi are measured for the profiles of
temperature of these wells to investigate the temperature distribution.
Two-dimensional heat transfer software is written to explain the control
factors of temperature distribution and to simulate the effects on
temperature changes when springs are pumped from the same level. This
will provide a reference in managing hot springs resources in Jiaosi
hot-spring area.
The site monitoring result shows that the measured profiles of
temperatures of the wells are mostly slightly cool in the upper and lower
levels, but hotter in the middle, except that the temperature at depth is
distributed differently. When the hot water flows at the rate of about 10-5
to 10-6 m/s, the control factor of the thermal conductivity should be
dominated by the convection. When the flow rate is 10-7m/s or below, the
thermal conductivity is small and the control factor of the thermal
conductivity should be dominated by the conduction.
The simulations show that artificially pumping behavior strengthens
the flow of hot water to the downstream. Assuming that a large number of
pumping in the midstream (between Tai-Tzu and Qili Dan), the water
level will subside and causes the groundwater originally flowing toward
southeastern direction of Qili Dan flows to northwestern and the cold
water in Er-Lung expands to northwestern. This results in the range of hot
spring shrinks and its temperature drops. If pumping wells are closer to
Er-Lung (ie, the eastern side at the boundary of the 30℃), the
groundwater in both Qili Dan and 30℃ boundary will sill flow
southeasterly after the pumping. This not only prevents the temperature
of hot spring drops, but also increases the range of the hot springs.
However the pumping in Er-Lung may have a high environmental cost,
considering the mud layer from Qili Dan, Er-Lung to Jhiu-An districts
being very thick, locating in the subsidence area and also closing to the
beach.
| Identifer | oai:union.ndltd.org:TW/100CNUP5517011 |
| Date | January 2012 |
| Creators | Hsiao-Ju Wu, 吳秀珠 |
| Contributors | none, 陳文福 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 142 |
Page generated in 0.007 seconds