CAJ | 학술논문

川西海子山晚更新世冰川遗迹发育且保存完整，在某场地工程地质勘查中揭示，海子山冰川堆积物普遍具有固结较好、承载力较高的特点，含砾中、粗砂层承载力可达500～800kPa，远高于其他成因的同类土，为超固结土。结合物探、钻探、详细的地面测绘、显微分析及孢粉分析，通过标贯及载荷试验、室内土工试验等，揭示区内低凹地段均有超固结土存在，区内超固结土具有低渗透性、低变形、高承载力等工程特性。超固结土是晚更新世古冰帽巨大荷载使冰川底碛排水固结到全新世时冰川消融卸载而成的特殊土体。
천서해자산만경신세빙천유적발육차보존완정，재모장지공정지질감사중게시，해자산빙천퇴적물보편구유고결교호、승재력교고적특점，함력중、조사층승재력가체500～800kPa，원고우기타성인적동류토，위초고결토。결합물탐、찬탐、상세적지면측회、현미분석급포분분석，통과표관급재하시험、실내토공시험등，게시구내저요지단균유초고결토존재，구내초고결토구유저삼투성、저변형、고승재력등공정특성。초고결토시만경신세고빙모거대하재사빙천저적배수고결도전신세시빙천소융사재이성적특수토체。
The glacier vestige during Late Pleistocene epoch on the Haizi Mountain in the west of Sichuan is developed and preserved completely. It is disclosed in an on-site engineering geological survey that the glacial deposits on the Haizi Mountain has the characteristics of good consolidation and high bearing capacity in general with the bearing capacity of the medium-size and coarse sand layers containing gravel up to 500 -800 kPa which is far more than that of the like with other genesis, so it is over consolidated soil. With geophysical prospecting, probe drilling, detailed ground mapping, microscopic and palynological analyses and through standard penetration test, loading test, and indoor geotechnical test, it is demonstrated that in the indented area of this region, there exists over consolidated soil which has the engineering characteristics of low penetrability, low deformability and high bearing capacity. This over consolidated soil is the special earth mass which is formed because the very large load of ancient ice cap during Late Pleistocene epoch causes the drainage of ground moraine to be consolidated till glacial ablation and unloading during Holocene epoch.