含懸浮質流體入滲對土壤性質 改變之探討

Study on the Alteration of Soil Property of Porous Media for Flow with Suspending particles

柯懿珍(YI-CHEN KO)

指導教授 ： 張德鑫

中原大學/工學院/土木工程學系/碩士(2008年)

https://doi.org/10.6840/cycu200900592

摘要

台灣在水資源的利用上，大部分以農業灌溉用水量為主。灌溉土層中
因有牛踏層之存在，使得田間水及養分不致因滲漏作用快速流失，對稻作
的生長有著極大的影響，牛踏層其難透水的特性，對田間的保水程度有益。
在水源灌溉時，通常會夾雜著懸浮質或泥沙，因而造成介質之阻塞現象，
土層之滲透係數與其土壤性質也隨即改變。本研究以淤泥水入滲試驗探討
其土壤性質改變所造成之效益，並觀察其保水情況及補注量來加以改善。
本研究選用兩種粒徑不同之標準砂來進行試驗，先由基本物理性質試
驗來分析出其此兩種砂之比重和孔隙率等特性資料，接著以定水頭滲透試
驗原理，以不含雜質之清水滲透試驗來求得各層孔隙介質初始滲透係數
值，作為基本值之參考。在模擬稻作定期灌溉之方式後，根據流量及水頭
差計算出各層之滲透係數變化值，並求得其阻塞值，進而探討其保水效果，
以為往後研究阻塞特性之基礎。

關鍵字

懸浮質流體

並列摘要

The use of water resources in Taiwan, most of the mainly agricultural
irrigation water. Soil layers will have traffic pan, in stage of furrowing to cause
the field nutrient will not loss with seepage function, the growth of rice has a
tremendous influence, because of the characteristics of poor permeability, it is
useful to degree of keeping water up in the field. When water source irrigation,
usually mixed with suspension or silt, thus resulting in the effect of blocking of
the medium, and change the characteristics with the coefficient of permeability
of soil layers immediately. In this study, in case of mud water infiltration to soil
of the changing characteristics of the efficiency, and to observe the situation of
keeping water up and the water recharge to improve it.
This research used two kinds of sands with different grades for experiments.
First, the physical properties of the specific gravity and pore ratio of the sands
were analyzed. Second, the initial coefficients of permeability in each layer were
found with pure water in basic, and decides the flood peak by the permeability
test. After the way of simulation with irrigating rice regular, that calculate each
change value of coefficients of permeability and the difference with flood peak
according to the flow rate. Extracting the value of blocking, then compares the
effect to keep water up for studying in the block foundation of the characteristic
in the future.

並列關鍵字

Soil Property

參考文獻

14. 馬志銘（2003），「含懸浮質流體在孔隙介質之滲透係數研究」，私立

Dalmont, Paris.

2. 萬鑫森（1968），「土壤水分及其移動」，水土保持學報1：19-25。

hydraulic conductivity of compacted bentonite,” Applied Clay Science,

physical properties of soils in the Nsukka Plains, ” Southeastern