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研究生：	鐘翊珊 Chung, Yi-Shan
論文名稱：	二氧化碳封存機制下對岩石力學性質之影響 A study of the mechanical properties of bedding rocks exposed to CO2-rich environment
指導教授：	王建力 Wang, Chein-Lee
學位類別：	碩士 Master
系所名稱：	工學院 - 資源工程學系 Department of Resources Engineering
論文出版年：	2011
畢業學年度：	99
語文別：	中文
論文頁數：	114
中文關鍵詞：	二氧化碳、岩石
外文關鍵詞：	CO2, rock
相關次數：	點閱：95 下載：4
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摘要
本研究主要研究儲存層中二氧化碳-岩石之間的相互關係，透過巴西圓盤試驗求得I型破裂韌度及單軸抗壓試驗了解二氧化碳對岩石的侵蝕是否會影響岩石本身的強度，另一方面透過材料分析探討二氧化碳與岩石相互反應後將以何種化學成分沉澱在岩石表面上。本研究之試驗環境有三種，分別為：未反應、常壓、70oC飽和碳酸水及高溫高壓(20MPa、70oC)的超臨界環境；本研究針對三種不同岩石：大理岩、安山岩、砂岩進行試驗。
研究結果顯示：
1. 經常壓反應後，大理岩與砂岩之抗壓強度與斷裂韌度皆下降，安山岩則沒有明顯變化。
2. 超臨界環境反應後，大理岩與砂岩之抗壓強度與斷裂韌度皆下降，安山岩則上升。
3. 大理岩經常壓與超臨界環境反應後，方解石被分解成鈣、錳氧化物與Minercordite，微結構則變得鬆散。
4. 安山岩經常壓與超臨界環境反應後生成些微之鐵輝石，微結構無明顯之變化。
5. 砂岩經常壓與超臨界環境反應後生成矽酸鹽類礦物與Sodium mica，微結構之孔洞變多。

Abstract
The aim of this study is to investigate the CO2-rock interactions in CO2 storage. This study performs the Brazilian test to obtain the level I fracture toughness and the uniaxial compression test to obtain the compressive strength of the rock samples. In addition, this study carries out the XRD and SEM analyses to confirm the presence of mineral carbonates in the CO2-rock experiments. Three types of rocks including Marble, Andesite and Sandstone are investigated in this study. Three environments including atmospheric pressure, at room temperature (25oC) without CO2 , atmospheric pressure at 70oC temperature with CO2 and supercritical (20MPa,70oC) with CO2, are carried out.
Experimental results indicate that
1. The compressive strength and fracture toughness decreases for Marble and Sandstone at atmospheric pressure condition comparing with atmospheric pressure, room temperature(25oC) without CO2 condition.
2. The compressive strength and fracture toughness decreases for Marble and Sandstone at supercritical condition, but increases only for Andesite comparing with atmospheric pressure, room temperature(25oC) without CO2 condition.
3. The Marble of calcite (CaCO3) dissolved into Calcium Manganese Oxide (CaMn3O7) and Minrecordite (CaZn(CO3)2) at atmospheric pressure condition and supercritical condition. There is a loose microscopic structure in the Marble sample.
4. The some Clinoferro silite (Fe SiO3) is present in the Andesite sample at atmospheric pressure condition and supercritical condition. There is no obvious change in the microscopic structure ,in the Marble sample.
5. The some Anorthite (CaAl2Si2O8) is present in the Sandstone at atmospheric pressure condition and supercritical condition. There is more pores present in the microscopic structure in the Sandstone sample.

目錄
頁次
摘要......................................................I
Abstract...................................................II
誌謝.....................................................III
目錄.....................................................IV
圖目錄.................................................VIII
表目錄.................................................XIII

第一章	緒論...............................................1
1 研究背景與動機.....................................1
2 研究目的...........................................4
3 研究內容與流程.....................................4
第二章 文獻回顧與理論.....................................6
1二氧化碳性質之介紹..................................7
2 二氧化碳地下封存之風險分析..........................8
3 岩石於超臨界二氧化碳環境下之微觀與材料分析........11
4 岩石於二氧化碳環境下之化學反應機制................22
5 岩石於超臨界二氧化碳環境下之力學分析...............25
6 岩石破壞力學發展...................................27
7 應力強度因子.......................................28
8 斷裂韌度介紹.......................................34
第三章 試體製備與試驗方法及設備..........................37
1 試驗材料......................... .................37
2 單位重、含水率、孔隙率...............................39
2.1 單位重、含水率、孔隙率試體製備與流程...............39
2.2 單位重之量測.....................................42
2.3 含水率之量測.....................................43
2.4 孔隙率之量測.....................................44
3 單軸抗壓試驗.......................................45
3.1 單軸抗壓試驗儀器與流程...........................45
3.2 單軸抗壓試驗之量測...............................50
4 巴西圓盤之I型斷裂韌度試驗..........................51
4.1 巴西圓盤試體製備與試驗流程.......................51
4.2 斷裂韌度之量測...................................53
5 環境參數...........................................54
6養冶設備............................................56
6.1二氧化碳常壓養冶設備..............................56
6.2二氧化碳超臨界養冶設備............................57
7 X光粉末繞射(XRD)分析設備..........................60
8掃描式電子顯微鏡(SEM)設備.....................61
第四章 試驗結果與討論....................................62
1單位重、含水量、孔隙率................................63
1.1 試體編號.........................................63
1.2 試體體積與飽和重及乾重量測結果...................64
1.3 試驗結果.........................................68
1.4 試驗討論.........................................74
2 單軸抗壓試驗.......................................75
2.1 試體編號.........................................75
2.2 試驗結果.........................................76
2.3 試驗討論.........................................82
3 以巴西圓盤進行I型斷裂韌度試驗.....................84
3.1 試體編號.........................................84
3.2 試驗結果.........................................85
3.3 試驗討論........................................91
4 破裂韌度與抗壓強度之趨勢關係.......................93
5 XRD分析結果.....................................95
5.1 XRD分析之討論....................................97
6 SEM分析結果....................................99
6.1 SEM分析之討論...................................102
7 化學變化對力學性質之影響...........................103
第五章 結論與建議.......................................104
1 結論..............................................104
2 建議..............................................109
參考文獻................................................110

                                    

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