中国地质灾害与防治学报
中國地質災害與防治學報
중국지질재해여방치학보
THE CHINESE JOURNAL OF GEOLOGICAL HAZARD AND CONTROL
2012年
1期
48-54
,共7页
赤平投影%控崩结构面%滑移式崩塌%坠落式崩塌%倾倒式崩塌
赤平投影%控崩結構麵%滑移式崩塌%墜落式崩塌%傾倒式崩塌
적평투영%공붕결구면%활이식붕탑%추락식붕탑%경도식붕탑
stereographic projection%structural surfaces controlling rackfall%sliding type collapse%falling type collapse%toppling type collapse
汶川地震后,公路岩质边坡结构面发育,极易失稳形成崩塌。从发育的多组结构面中选取典型的结构面作为形成崩塌的控崩结构面,并通过对结构面所处边坡的工程地质条件分析得出控崩结构面的选取原则;考虑控崩结构面与边坡临空面的空间位置关系,运用赤平投影解法重点分析一组和两组控崩结构面与边坡临空面的图解关系;将震后公路边坡发生崩塌分为三种类型：滑移式、坠落式和倾倒式,结合边坡岩性、坡形、坡度、坡高等因素,得到了震后公路边坡崩塌三种类型的判据;将其应用到汶川地震后映秀—卧龙公路沿线边坡发育的典型崩塌中,得出的崩塌类型与实际相符。
汶川地震後,公路巖質邊坡結構麵髮育,極易失穩形成崩塌。從髮育的多組結構麵中選取典型的結構麵作為形成崩塌的控崩結構麵,併通過對結構麵所處邊坡的工程地質條件分析得齣控崩結構麵的選取原則;攷慮控崩結構麵與邊坡臨空麵的空間位置關繫,運用赤平投影解法重點分析一組和兩組控崩結構麵與邊坡臨空麵的圖解關繫;將震後公路邊坡髮生崩塌分為三種類型：滑移式、墜落式和傾倒式,結閤邊坡巖性、坡形、坡度、坡高等因素,得到瞭震後公路邊坡崩塌三種類型的判據;將其應用到汶川地震後映秀—臥龍公路沿線邊坡髮育的典型崩塌中,得齣的崩塌類型與實際相符。
문천지진후,공로암질변파결구면발육,겁역실은형성붕탑。종발육적다조결구면중선취전형적결구면작위형성붕탑적공붕결구면,병통과대결구면소처변파적공정지질조건분석득출공붕결구면적선취원칙;고필공붕결구면여변파림공면적공간위치관계,운용적평투영해법중점분석일조화량조공붕결구면여변파림공면적도해관계;장진후공로변파발생붕탑분위삼충류형：활이식、추락식화경도식,결합변파암성、파형、파도、파고등인소,득도료진후공로변파붕탑삼충류형적판거;장기응용도문천지진후영수—와룡공로연선변파발육적전형붕탑중,득출적붕탑류형여실제상부。
After the earthquake,there grows structural surfaces in highway rocky slope,they easily become unstable to collapse.Choose the typical structural surfaces from many ones as structural surfaces controlling rockfall,then analyze the engineering geological conditions of structural surface in the slope,selecting principles of structural surface controlling rockfall are obtained.Considering the space position between structural surface controlling rockfall and free face of the slope,using stereographic projection method,emphatically analyze the space relation between a group or two structural surfaces controlling collapse and free face of the slope.Post-earthquake collapses happened to highway slope are divided into three collapse types,including sliding type,toppling type and falling type.Combined with factors including slope lithology,slope shape,slope gradient and slope height,the criterion of three collapse types for post-earthquake highway slope are obtained.Collapses types from the given criterion using the typical collapses growing in highway from Yingxiu to Wolong are in accord with the actual condition.
