| DC 欄位 |
值 |
語言 |
| DC.contributor | 應用地質研究所 | zh_TW |
| DC.creator | 孫渥鈞 | zh_TW |
| DC.creator | Wo-jyun Sun | en_US |
| dc.date.accessioned | 2011-8-1T07:39:07Z | |
| dc.date.available | 2011-8-1T07:39:07Z | |
| dc.date.issued | 2011 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=976204007 | |
| dc.contributor.department | 應用地質研究所 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 多深度微水試驗(MLST)是在井中不同深度進行微水試驗，以獲得水力
傳導係數的垂直分布K(z)。由於MLST 的測試段長度小於含水層厚度，MLST 引起的地下水流為部分貫穿情況。扁平比(井半徑/測試段長度)和部分貫穿比(測試段長度/含水層厚度)會影響部分貫穿井附近的地下水流流場，但是以往討論含水層儲蓄效應時只提到扁平比的影響；當微水試驗中扁平比大於0.08 時受壓含水層的儲蓄效應可以忽略。本研究的目的為探討扁平比和部分貫穿比與含水層儲蓄效應的關係，並找出何種情況下含水層儲蓄效應可以忽略。同時利用暫態(考慮儲蓄效應)模式和類穩態(忽略儲蓄效應)模式於受壓和非受壓含水層中，並以暫態和類穩態模式進行比較，將比較結果區分為高滲透性和低滲透性，得出含水層儲蓄效應可以忽略(1)當高滲透性受壓含水層中部分貫穿比小於0.03 且扁平比小於5;(2)高滲透性非受壓含水層中扁平比小於5 且儲蓄效應的影響與部分貫穿比無關。對於低滲透
性含水層，無論是受壓或非受壓，儲蓄效應皆不可忽略，且儲蓄效應的影響與部分貫穿比無關。
| zh_TW |
| dc.description.abstract | The multilevel slug test (MLST) is to conduct a number of depth-specific slug tests at various depths in a well for the determination of the vertical distribution of hydraulic conductivity, K(z). The test length of each depth-specific slug test is set less than aquifer thickness, so the flow induced is under a partially penetrating condition. It is known that both the aspect ratio (well radius / the test
section length) and the partial penetration ratio (the test section length/ aquifer thickness) play important roles in affecting the flow field close to a partial penetrating well. However, only the aspect ratio has been taken into account when assessing the influence of aquifer storage for MLSTs; that is, aquifer storage can be neglected when the aspect ratio is larger than 0.08 for a slug test in a confined aquifer. Therefore, the purpose of this study is to evaluate the influence of the aspect ratio and the partial penetration ratio on the negligence of aquifer storage. A transient model with aquifer storage effect and a
quasi-steady-state model neglecting aquifer storage are developed for both the confined and unconfined aquifers. The comparison of these two models under high–K and low-K conditions reveals that aquifer storage can be neglected when (1) the aspect ratio is less than 5 and the partial penetration ratio is less than 0.03 in high-K confined aquifers, and (2) the partial penetration ratio is less than 5 in high-K confined aquifers, regardless of the aspect and partial penetration ratios.For either confined or unconfined aquifers of low-K condition, aquifer storage
can’t be neglected. regardless of the aspect and partial penetration ratios.
| en_US |
| DC.subject | 儲蓄效應 | zh_TW |
| DC.subject | 多深度微水試驗 | zh_TW |
| DC.subject | 暫態 | zh_TW |
| DC.subject | 部分貫穿比 | zh_TW |
| DC.subject | 扁平比 | zh_TW |
| DC.subject | 類穩態 | zh_TW |
| DC.subject | trasient state | en_US |
| DC.subject | partial penetrating ratio | en_US |
| DC.subject | aspect ratio | en_US |
| DC.subject | storage effect | en_US |
| DC.subject | multilevel slug test | en_US |
| DC.subject | quasi-steady state | en_US |
| DC.title | 含水層儲蓄效應對多深度微水試驗資料分析的影響 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Effect of Aquifer Storage on Data Analysis of Multilevel Slug Test | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |