CAJ | 학술논문

甘肃有色地勘局106队部东侧的不稳定斜坡位于兰州市九州开发区黄河北岸、罗锅沟左岸沟谷斜坡地带。勘查查明，不稳定斜坡中下部及坡脚地带为古近系砂质泥岩，斜坡中上部和坡顶为第四系全新统人工堆积物；其形成原因与地形地貌、地质构造、工程地质特征、降雨、地下水、人类工程活动等有关。根据定性分析和定量计算，认为勘查区斜坡现状处于不稳定状态，其失稳产生崩塌、滑坡的可能性大，最危险滑裂面位于填土和基岩的接触面；拟建工程建设遭受其危害的可能性及危险性中等。建议在治理斜坡时，坡脚挡土墙工程选用浅基础型式，跨越浅沟段（15m）可采用桩基础形式，以砂质泥岩作为基础持力层，并严格防止地表水渗入砂质泥岩地基。为区内不稳定斜坡的治理，防灾减灾提供了依据。
감숙유색지감국106대부동측적불은정사파위우란주시구주개발구황하북안、라과구좌안구곡사파지대。감사사명，불은정사파중하부급파각지대위고근계사질니암，사파중상부화파정위제사계전신통인공퇴적물；기형성원인여지형지모、지질구조、공정지질특정、강우、지하수、인류공정활동등유관。근거정성분석화정량계산，인위감사구사파현상처우불은정상태，기실은산생붕탑、활파적가능성대，최위험활렬면위우전토화기암적접촉면；의건공정건설조수기위해적가능성급위험성중등。건의재치리사파시，파각당토장공정선용천기출형식，과월천구단（15m）가채용장기출형식，이사질니암작위기출지력층，병엄격방지지표수삼입사질니암지기。위구내불은정사파적치리，방재감재제공료의거。
An unstable slope at eastside of the No.106 Exploration Team, Gansu Bureau of Geology and Exploration for Nonferrous Met-als is situated in the Jiuzhou Development Zone, north bank of Yellow River, left bank of Luoguogou ravine zone. Exploration has identi-fied that the lithology of unstable slope lower part and slope toe is Paleogene sandy mudstone, while upper part and top of slope is Qua-ternary Holocene artificial deposits; the formation is related to landform and topography, geological structure, engineering geological features, rainfall and groundwater, as also human engineering activities. According to qualitative analysis and quantitative computation, considered that the status quo of the slope is under unstable state, collapse and landslide much more likely, most critical sliding surface is the interface between artificial fills and bedrock;hazard and risk of proposed engineering construction are medium. It is suggested that during the slope governing, slope retaining wall should use shallow foundation, groove spanning sector ( 15m) should use pile foun-dation, taking sandy mudstone as foundation bearing stratum, and strictly prevent surface water seep into sandy mudstone foundation. The study has provided the basis for unstable slope governing, hazard prevention and mitigation in the area.