| Summary: | 碩士 === 國立中興大學 === 水土保持學系 === 86 === The objective of this research was to study the hydrological
characteristicsby the limestone mining operation. The method
was carried out by waterquality, infiltration rate, and sediment
yield were surveyed. in Hualien.The results were shown as follow
：1. The final infiltration rate of forest control is best and
then the rate of the prior explosion area, explosion zone,
operation platform and re- vegetation terrace decrease
respectively.2. Generally, the operation of limestone mining
including explosion, transport, grind-cutting. etc. decrease
the water infiltration process.3. Also, soils of mining
operation area drastically are disturbed can create horrendous
problems in water body. Water quality of run off in turbidity
and suspended solid reach frightening pollution stage, closed
to 10 thousand mＳ/cm and thousand ppm respectively.4.
Sedimentation treatment for the discharging water is
necessary.5. Surface mine spoils are responsible for erosion
sediment estimate at 4000 times greater then erosion in fully
stocked forest.
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