台灣位於歐亞大陸板塊與菲律賓海板塊交界處，造山運動非常顯著。地形陡峭，西部麓山帶大多為較軟弱且膠結性差的沉積物，地理位置屬於亞熱帶氣候，降水豐沛，風化與侵蝕作用劇烈常常會發生山崩及土石流，邊坡破壞後，於邊坡下方堆積非常不均勻的崩積層材料。
由於崩積材料由複雜且不均質的粗顆粒岩塊與細粒的基質組成，岩塊與基質間存在強度及勁度差異，其力學性質不易評估。國內、外的研究結果有限，本研究參考國內外研究方法，針對崩積層鑽探的岩心，以室內三軸試驗及單壓試驗探討崩積併構土的成岩特性、滲透性、剪力強度與破壞模式等。
本研究用掃描儀器計算表面積岩塊含量與體積岩塊含量進行比較，並利用軟岩用三軸試驗系統與土壤三軸系統進行一系列的三軸剪力試驗及單壓試驗，探討不同地區併構土影響力學行為之因素與破壞模式。試驗結果顯示，影響併構土強度的因素有基質的性質、岩塊含量、岩塊大小與分布、含水量與三軸試驗套膜；試體破壞模式發現破壞面為沿著岩塊間發展，並不通過岩塊，分為膨脹型破壞、一組剪裂面破壞、多組剪裂面破壞與複合型破壞。

Taiwan is located at the junction of the Eurasian Plate and the Philippine Sea Plate, and the orogeny is very significant. Most of the Western piedmont blats are distribution of weak and poorly cemented sediments. The geographical location is subtropical climate area. Landslides are often occurs due to Rainfall, weathering and erosion. After the failure of slope, many uneven rock and soil colluvium material accumulates beneath the slope.
Because of the complexity and inhomogeneity of the colluvium material that consists of coarse-grained blocks and fine-grained matrix, the strength and stiffness difference between the blocks and the matrix are not easily evaluated by the mechanical properties. Domestic and foreign research results are limited. So, in this study, reference to domestic and foreign research methods, for the core of the collapse of drilling, using triaxial test and uniaxial compression test to discuss the colluvial deposits and the diagenetic process, permeability, shear strength and failure Mode and so on.
In this study, the surface block content is calculation by rotated scanning instrument. Investigating a series of triaxial shear tests and uniaxial compression test result were carried out by using triaxial test system. To determinate the influence factors and destruction mode of bimsoil. The test results show that the factors affecting the soil strength include the properties of the matrix, the content of block proportion, the size and distribution of block, the water content and the triaxial test membrane; the failure mode of the sample shows that the failure surface is along the rock mass development, It does not pass through rock blocks; and divided into intumescent damage, a series of shear failure, multiple sets of shear failure and composite damage.

中文摘要 i
Abstract ii
目錄 iv
圖目錄 ix
表目錄 xvi
第一章、前言 1
1.1研究動機與目的 1
1.2研究方法 2
1.3研究流程圖 3
第二章、文獻回顧 4
2.1崩積層概述 4
2.1.1崩積層定義與形成原因 4
2.2混合岩概述 7
2.2.1併構岩/土定義 8
2.2.2岩塊大小定義 10
2.2.3岩塊體積比利對力學行為影響 12
2.3岩塊比量測方法 22
2.3.1單位重法 22
2.3.2結點法 24
2.3.3掃描線法 25
2.3.4面積比法 29
2.4剪力行為與特性 30
2.4.1土壤組成與定義 30
2.4.2土壤顆粒大小定義 31
2.4.3土壤工程分類 32
2.4.4土壤破壞理論 33
2.4.5土壤剪力強度 34
2.4.5.1三軸壓密排水試驗(Consolidation-Drain Triaxial Test) 34
2.4.5.2三軸壓密不排水試驗(Consolidation-Undrain Triaxial Test) 36
2.4.5.3三軸不壓密不排水試驗(Unconsolidation-Undrain Triaxial Test) 38
2.5台灣崩積併構岩/土實驗整理 42
2.5.1梨山地滑區併構土 42
2.5.2苗栗鹿場地區併構土 50
第三章、研究方法 55
3.1試驗材料取得 56
3.2試驗材料的保存與運送 58
3.3試體準備 59
3.4表面掃描與岩塊分析 60
3.5試驗規劃 62
3.6試驗流程 64
3.6.1試體架設 65
3.6.2飽和 67
3.6.3壓密試驗 67
3.6.4不排水壓縮實驗 69
3.6.5單壓試驗 70
3.6.6物性試驗 71
3.6.6.1含水量試驗 71
3.6.6.2篩分析試驗與比重計試驗 71
3.6.6.3土粒比重試驗 74
3.6.6.4阿太堡限度實驗 75
3.6.6.5岩塊單位重試驗 77
3.7試驗結果分析 78
第四章、試驗儀器介紹 79
4.1 MTS 810與軟岩三軸系統 79
4.2土壤三軸系統 83
4.3圍壓系統 84
4.4量測元件 86
4.5 旋轉掃描器 89
第五章、實驗結果與討論 90
5.1併構土單壓試驗 90
5.2併構土三軸試驗 92
5.2.1阿里山併構土 92
5.2.2六龜併構土 94
5.2.3鹿場併構土 99
5.3物性試驗結果 105
5.4併構土試體破壞模式 107
5.4.1膨脹型破壞 107
5.4.2一組剪裂面破壞 108
5.4.3多組剪裂面破壞 109
5.4.4複合型破壞 109
5.5影響併構岩單壓及三軸強度因子 111
5.5.1基質性質 111
5.5.2岩塊含量 112
5.5.3岩塊大小與分佈 113
5.5.4含水量 114
5.5.5三軸試驗套膜 115
5.6鹿場地區併構岩強度分析 116
5.6.1不同應變情形下的剪力強度 116
5.6.2鹿場崩積併構土三軸不排水強度 122
第六章、結論與建議 124
6.1結論 124
6.2建議 125
參考文獻 126

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