Jiang Chengze, Li Xinming, Zhao Limin
(Nuclear Industry Aerial Surveying and Remote Sensing Center)
Abstract This article examines the inspection, acceptance, development, utilization and storage of electronic files of geological data. Some existing problems are briefly described, and preliminary suggestions are put forward on the production software, software data interface, integration and management of electronic files of geological data.
Keywords Geological data electronic files Problems Suggestions
The integration of geological data electronic files began in the late 1990s. In 2002, the Ministry of Land and Resources issued the "Notice on Carrying out the Collection and Submission of Electronic Files of Geological Data Result" (Guoguozifa [2002] No. 93), formally requiring the submission of electronic files and preliminarily standardizing the electronic files of geological data results. In 2006, the Ministry of Land and Resources issued the "Notice on Issuing the Format Requirements for the Collection and Submission of Electronic Files of Result Geological Data" (Landuzifa [2006] No. 210), which further standardized the collection and submission format of electronic files. . With the continuous introduction of computer technology and information technology in geological work, more and more types of software are used in geological work, the content of aggregated data is richer, and the inspection, acceptance and management of aggregated geological data are becoming more and more difficult. big.
1 Problems in the inspection and acceptance of electronic files
(1) There are many types of software for preparing electronic files of geological data, which increases the difficulty of inspection and acceptance of electronic files. There are many types of geological work, including regional geological surveys, mineral geological surveys, geophysical and geochemical surveys, ground anomaly verification, geological scientific research, etc. Due to the diversity of geological exploration methods, especially the diversity of ground geophysical and geochemical exploration work, such as ground electrical methods, magnetic methods, seismic exploration, etc., the raw data collected by various instruments need to be processed using different professional software, which forms The formats of the result data files are different, so the types of source electronic files when submitting the result geological data are more complex, which brings great difficulty to the inspection and acceptance of the electronic files of the submitted data. Because only geological data management personnel have mastered the basic operations of this type of electronic file production software, they can open the electronic files for inspection and acceptance against the paper drawings. The types of software and file types commonly used for electronic file production of geological data are shown in Table 1.
Table 1 Commonly used software and data file types for compiling geological data maps
Continued table
(2) The software and hardware configuration conditions of the geological data management department cannot Meet the needs of electronic file inspection and acceptance of geological data collection. For electronic files of geological data processed by professional software, a corresponding software platform needs to be built to inspect the electronic files. As the archives (room) of the geological data management department, it is generally impossible to be equipped with such professional software. Therefore, it is not possible to implement a true inspection and acceptance of electronic files of collected geological data. I am afraid that it can only check whether the files can be copied normally. And whether the organizational structure of the document complies with relevant regulations.
(3) Problems with storage media for electronic documents collection. At present, in addition to tapes and disks, most of the carriers for collecting electronic files of geological data use CD or DVD discs. The quality of tapes and disks is relatively guaranteed, but the quality of optical discs is worrisome. According to the regulations of national archives management, optical discs for storing electronic files need to meet the corresponding national standards - "Technical Requirements and Application Specifications for Electronic Document Archiving Optical Discs" (DA/T 38-2008). The quality of optical discs sold on the market varies, and the quality of optical discs Professional equipment is required for testing. It is impossible for the grassroots unit that collects geological data to verify the quality of the CD, so the storage medium for the collected electronic files should also be an aspect that needs attention during the inspection and acceptance of the collected electronic files.
2 Problems in the development and utilization of electronic files of geological data
The secondary development and utilization of geological data is an important step to improve the efficiency of geological work, avoid waste of exploration investment, and realize the value of geological data way. The collection of electronic files of geological data is an important resource for geological data to serve practical work.
Due to differences in electronic file production software and software versions, it is often difficult to use electronic files of geological data or the maps have to be re-edited. The problems existing in the provision and utilization of electronic files in actual work mainly include the following aspects:
(1) Because there are no corresponding implementation standards for the electronic files of geological data compiled in the early stage, the quality of the collection is uneven. , some data collection contents are incomplete, which brings inconvenience to the use of electronic files, such as maps compiled by MapGIS software that are not compiled into sub-galleries.
(2) The electronic files of the original geological data are complete in content, but they are inconsistent with the library used in the new requirements. Reusing these geological data also requires a lot of work.
(3) The original software for compiling electronic files of geological data is different from the new required software. Data exchange is required, which also brings a large workload input to geological work. If you use AutoCAD software to prepare drawings, you need to import them into MapGIS software for re-editing, or perform data exchange between MapGIS and ArcGIS software.
3 Problems in the storage of electronic files of geological data
The storage media of electronic files of geological data are related to the development of computer technology. The current storage media of electronic files include floppy disks (3.5 inch and 5-inch), magnetic tape (cassette tape, reel-to-reel tape), hard disk (IDE interface and SATA interface), mobile hard disk, U disk, magneto-optical disk (MO), optical disk (CD, DVD), etc. In actual work, the custody of electronic files mainly has the following two aspects:
(1) The problem of obsolete reading equipment for storage media. With the development of computer technology, many standard reading devices such as floppy drives, magneto-optical disk drives, ISA interface tape drives, etc. have gradually withdrawn from the stage of history. It is no longer practical to directly use electronic files in these storage media. Therefore, geological data managers must promptly transfer electronic files stored in non-general media to general storage media (such as optical disks or removable storage media) based on computer development status to ensure that they can provide utilization services.
(2) Backup issues of electronic files of geological data. Currently, storage media that are commonly used and convenient for data exchange include mobile hard drives and optical disks. The mobile hard disk should be stored in an anti-magnetic cabinet and regularly connected to the computer for inspection to ensure that data is not lost. Because the quality of optical discs varies, the optical discs storing electronic files need to be regularly inspected and backed up regularly.
4 Suggestions
(1) Geological data managers should strengthen their learning. In addition to knowledge of geology, geophysical prospecting, and file management, they should also strengthen their knowledge of software commonly used in geological work. Study to improve the ability to inspect and accept electronic files of geological data and control the quality of inspection and acceptance.
(2) When producing electronic files of geological data, try to use general-purpose and mature software, keep the types of software as few as possible, and maintain the relative stability of the software to facilitate the management, development and utilization of electronic files.
(3) For source electronic files formed by professional software, such as interpretation maps (*.cgm) formed by seismic exploration data processing, it is recommended to integrate and browse the software in this file format to facilitate file management. Person browsing check.
(4) Regarding MapGIS, an excellent domestic geographic information system software commonly used in current geological data compilation, it is recommended that the Ministry of Land and Resources organize relevant departments to compile a national unified symbol library (SLIB) and issue it to geological survey units for use. To form unified production standards for geological data across the country to improve the standardization of geological data.
(5) Research and solve the data exchange standard interface of commonly used software in geological work (MapGIS, ArcGIS, AutoCAD, etc.) to improve the versatility of data files and facilitate the secondary development and utilization of geological data.
(6) Geological data management personnel should promptly upgrade the electronic files of geological data collected in the early stage to the format of the new version of the software based on the development status of the geological data production software, so as to avoid failure due to too large differences in software versions. Normally complete the conversion and upgrade of electronic files to improve the reusability of electronic files.
(7) According to the development status of computer technology, geological data managers should promptly dump electronic files stored on non-general equipment to current general-purpose storage media (such as optical disks, mobile hard drives, etc.), and The quality of these storage media should be guaranteed to a certain extent. It is best to use multiple types of storage media for backup to facilitate the safe preservation and utilization of electronic files.
5 Conclusion
The above is some understanding of the inspection, acceptance, utilization and storage of electronic files of consolidated geological data. Readers are kindly requested to criticize and correct any errors.