地质勘察是水利水电工程建设中的基础性工作。传统的地质勘察依赖于纸质材料记录地质信息,导致二维图件的直观性较差且极易丢失空间特征,现场分析过程大量依赖主观经验,内外业工作脱节难以保证编录效率及数据的可靠性。本文基于三维实...地质勘察是水利水电工程建设中的基础性工作。传统的地质勘察依赖于纸质材料记录地质信息,导致二维图件的直观性较差且极易丢失空间特征,现场分析过程大量依赖主观经验,内外业工作脱节难以保证编录效率及数据的可靠性。本文基于三维实景技术、地理信息系统(Geographic Information System,GIS)、机器学习算法、地质建模等技术方法,提出了以多源数据融合、多平台协同与二三维联动、地质智能编录及快速空间解译为核心的水工地质数字化编录与内外业一体化分析方法,并研发了适用于桌面端和移动端的软件平台,包括三个主要模块:①底图模块:基于多源数据而构建融合的三维实景,实现数据的多平台协同及二三维联动,为内外业工作提供参考场景。②编录模块:基于多平台协同和智能识别方法,实现地质点、地质界线和勘探对象的编录。③分析模块:基于空间解译方法,实现空间产状面的推求和三维空间交线推断等。在具体功能上,移动端侧重外业采集,桌面端侧重内业分析,二者相互配合实现内外业工作的无缝衔接。该系统平台已应用于我国西部一座水利水电工程的地质勘察工作中,与传统工作模式进行对比,大幅提高了地质勘察编录与分析的效率和质量,可为其他类似系统提供可借鉴的方法和模式。展开更多
2-D resistivity method is an indirect method to the shallow subsurface survey for maintaining the geo-environment. It is used to measure the apparent resistivity of subsurface. EHR technique was developed in order to ...2-D resistivity method is an indirect method to the shallow subsurface survey for maintaining the geo-environment. It is used to measure the apparent resistivity of subsurface. EHR technique was developed in order to get detail and deeper penetration for shallow subsurface study. In this study, 2-D resistivity with Enhancing Horizontal Resolution (EHR) technique is adopted to map and characterize the shallow subsurface (mineral exploration, geology, engineering and environment) using Pole-dipole array. The locations are Pagoh, Johor;Nusajaya, Johor and Puchong, Selangor (Malaysia). The study associated with mineral exploration is Pagoh, Johor while for Nusajaya, Johor is associated with geology and Puchong, Selangor is associated with engineering and environment. The 2-D resistivity and Induced polarization (IP) were employed at Pagoh, Johor to study and detect the subsurface variation of resistivity and chargeability of iron ore in the area. Result of the 2-D resistivity as well as the Induced Polarization (IP) shows that the area is underlain by a thick alluvium with resistivity value of 10 - 800 ohm-m iron which has chargeability rate of 0.1 - 3 msec. A sedimentary case study was executed at Nusajaya, Johor shows sandstone contains iron mineral (30 - 250 ohm-m) and weathered sandstone (500 -1000 ohm-m). Interpretation of 2-D resistivity data at Puchong, Selangor showed a low resistivity value (< 40 ohm-m), which appears to be a zone that is fully saturated with sandy silt and this could be an influence factor the increasing water level because sandy silt is highly permeable in nature. The borehole, support the results of 2-D resistivity method relating a saturated zone in the survey area. There is a good correlation between the 2-D resistivity investigations and the results of borehole records. The stratigraphy and structure of the three case studies (mineral exploration, geology, engineering and environment) can be mapped effectively using 2-D resistivity with EHR technique.展开更多
文摘地质勘察是水利水电工程建设中的基础性工作。传统的地质勘察依赖于纸质材料记录地质信息,导致二维图件的直观性较差且极易丢失空间特征,现场分析过程大量依赖主观经验,内外业工作脱节难以保证编录效率及数据的可靠性。本文基于三维实景技术、地理信息系统(Geographic Information System,GIS)、机器学习算法、地质建模等技术方法,提出了以多源数据融合、多平台协同与二三维联动、地质智能编录及快速空间解译为核心的水工地质数字化编录与内外业一体化分析方法,并研发了适用于桌面端和移动端的软件平台,包括三个主要模块:①底图模块:基于多源数据而构建融合的三维实景,实现数据的多平台协同及二三维联动,为内外业工作提供参考场景。②编录模块:基于多平台协同和智能识别方法,实现地质点、地质界线和勘探对象的编录。③分析模块:基于空间解译方法,实现空间产状面的推求和三维空间交线推断等。在具体功能上,移动端侧重外业采集,桌面端侧重内业分析,二者相互配合实现内外业工作的无缝衔接。该系统平台已应用于我国西部一座水利水电工程的地质勘察工作中,与传统工作模式进行对比,大幅提高了地质勘察编录与分析的效率和质量,可为其他类似系统提供可借鉴的方法和模式。
文摘2-D resistivity method is an indirect method to the shallow subsurface survey for maintaining the geo-environment. It is used to measure the apparent resistivity of subsurface. EHR technique was developed in order to get detail and deeper penetration for shallow subsurface study. In this study, 2-D resistivity with Enhancing Horizontal Resolution (EHR) technique is adopted to map and characterize the shallow subsurface (mineral exploration, geology, engineering and environment) using Pole-dipole array. The locations are Pagoh, Johor;Nusajaya, Johor and Puchong, Selangor (Malaysia). The study associated with mineral exploration is Pagoh, Johor while for Nusajaya, Johor is associated with geology and Puchong, Selangor is associated with engineering and environment. The 2-D resistivity and Induced polarization (IP) were employed at Pagoh, Johor to study and detect the subsurface variation of resistivity and chargeability of iron ore in the area. Result of the 2-D resistivity as well as the Induced Polarization (IP) shows that the area is underlain by a thick alluvium with resistivity value of 10 - 800 ohm-m iron which has chargeability rate of 0.1 - 3 msec. A sedimentary case study was executed at Nusajaya, Johor shows sandstone contains iron mineral (30 - 250 ohm-m) and weathered sandstone (500 -1000 ohm-m). Interpretation of 2-D resistivity data at Puchong, Selangor showed a low resistivity value (< 40 ohm-m), which appears to be a zone that is fully saturated with sandy silt and this could be an influence factor the increasing water level because sandy silt is highly permeable in nature. The borehole, support the results of 2-D resistivity method relating a saturated zone in the survey area. There is a good correlation between the 2-D resistivity investigations and the results of borehole records. The stratigraphy and structure of the three case studies (mineral exploration, geology, engineering and environment) can be mapped effectively using 2-D resistivity with EHR technique.
