贵州镇宁-胜境关高速公路地质灾害调查与评估
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摘要
贵州省镇宁-胜境关高速公路建设用地地质灾害野外调查以1/1万线路地形图为工作手图,采用徒步穿越方式对评估区进行扫面调查,全程采用便携式GPS卫星定位仪定点,数码相机跟踪拍摄具代表性的地质及不良地质现象等。根据野外调查资料,对拟建公路区域内的地质灾害:岩溶、崩塌、滑坡、采空区、软土进行了评估。全线按危险性大、中、小3级划分为24个区。其中危险性大区12个,长度183.0km,占总里程的93.6%;危险性中等区10个,长度11.5km,占总里程的5.9%;危险性小区2个,长度1.0km,占总里程的0.5%。2/3路段为岩溶路段。因此,对其评估一定意义上代表了岩溶地区地灾害评估的方法及特征。
The geological-hazard field investigation for building Zhenning-Shengjingguan Highway in Guizhou Province adopts the topographic map with the scale at1∶10000as the working manual,and the scanning investigation is carried out in the pedestrian traveling manner,positioning with the portable GPS satellite orientator and recording the representative and unfavorable gelolgical phenomenon with a digital camera.Based on the field investigation data,the evaluation has been done for the geological hazards in the planned highway area,such as karst,collapse,landslide,goaf,soft soil,etc.The whole route has been classified into24zones according to the high,moderate and low danger potentiality,Wherein,there are12zones with high danger potentiality,with the length of183.0km and accounting for93.6%of the whole route;10zones with moderate danger potentiality,with the length of11.5km and accounting for5.9%of the whole route;2zones with low danger potentiality,with the length of1.0km and accounting for0.5%of the whole route.The entire highway section is a karst section,therefore,the evaluation to this highway section represents the gelolgical hazard evaluation methods for the karst area to some extent.
The geological-hazard field investigation for building Zhenning-Shengjingguan Highway in Guizhou Province adopts the topographic map with the scale at1∶10000as the working manual,and the scanning investigation is carried out in the pedestrian traveling manner,positioning with the portable GPS satellite orientator and recording the representative and unfavorable gelolgical phenomenon with a digital camera.Based on the field investigation data,the evaluation has been done for the geological hazards in the planned highway area,such as karst,collapse,landslide,goaf,soft soil,etc.The whole route has been classified into24zones according to the high,moderate and low danger potentiality,Wherein,there are12zones with high danger potentiality,with the length of183.0km and accounting for93.6%of the whole route;10zones with moderate danger potentiality,with the length of11.5km and accounting for5.9%of the whole route;2zones with low danger potentiality,with the length of1.0km and accounting for0.5%of the whole route.The entire highway section is a karst section,therefore,the evaluation to this highway section represents the gelolgical hazard evaluation methods for the karst area to some extent.
引文
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[4]GB50021-2001,岩土工程勘察规范[S].
[5]JTJ064-98,公路工程地质勘察规范[S].
[2]贵州省地质矿产局.贵州省区域地质志[M].北京:地质出版社.1987.
[3]韩至钧,金占省.贵州省水文地质志[M].北京:地震出版社.1996.
[4]GB50021-2001,岩土工程勘察规范[S].
[5]JTJ064-98,公路工程地质勘察规范[S].
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