This is a brief review of alternative methods of problem-solving in geoscience with emphasis on the role of mathematical geology. It is desirable to maintain a clear-cut distinction between reliable facts which can be...This is a brief review of alternative methods of problem-solving in geoscience with emphasis on the role of mathematical geology. It is desirable to maintain a clear-cut distinction between reliable facts which can be stored in data banks and concepts that can be incorporated in the specifications of statistical models designed for specific purposes. If possible, subjective probabilities should be incorporated in hypotheses that are to be tested by statistical inference.展开更多
To evaluate the lateral sealing mechanism of extensional fault based on the pressure difference between fault and reservoir, an integral mathematical-geological model of diagenetic time on diagenetic pressure consider...To evaluate the lateral sealing mechanism of extensional fault based on the pressure difference between fault and reservoir, an integral mathematical-geological model of diagenetic time on diagenetic pressure considering the influence of diagenetic time on the diagenetic pressure and diagenetic degree of fault rock has been established to quantitatively calculate the lateral sealing ability of extensional fault. By calculating the time integral of the vertical stress and horizontal in-situ stress on the fault rock and surrounding rock, the burial depth of the surrounding rock with the same clay content and diagenesis degree as the target fault rock was worked out. In combination with the statistical correlation of clay content, burial depth and displacement pressure of rock in the study area, the displacement pressure of target fault rock was calculated quantitatively. The calculated displacement pressure was compared with that of the target reservoir to quantitatively evaluate lateral sealing state and ability of the extensional fault. The method presented in this work was used to evaluate the sealing of F_(1), F_(2) and F_(3) faults in No.1 structure of Nanpu Sag, and the results were compared with those from fault-reservoir displacement pressure differential methods without considering the diagenetic time and simple considering the diagenetic time. It is found that the results calculated by the integral mathematical-geological model are the closest to the actual underground situation, the errors between the hydrocarbon column height predicted by this method and the actual column height were 0–8 m only, proving that this model is more feasible and credible.展开更多
After long-term development, mathematical geology has today become an independent discipline. Big Data science, which has become a new scientific paradigm in the 21st century, gives rise to the geological Big Data, i....After long-term development, mathematical geology has today become an independent discipline. Big Data science, which has become a new scientific paradigm in the 21st century, gives rise to the geological Big Data, i.e. mathematical geology and quantitative geoscience. Thanks to a robust macro strategy for big data, China＇s quantitative geoscience and geological big data＇s rapid development meets present requirements and has kept up with international levels. This paper presents China＇s decade-long achievements in quantitative prediction and assessment of mineral resources, geoscience information and software systems, geological information platform development, etc., with an emphasis on application of geological big data in informatics, quantitative mineral prediction, geological environment and disaster management, digital land survey, digital city, etc. Looking ahead, mathematical geology is moving towards ＂Digital Geology＂, ＂Digital Land＂ and ＂Geological Cloud＂, eventually realizing China＇s grand ＂Digital China＂ blueprint, and these valuable results will be showcased on the international academic arena.展开更多
The system of mineral deposit statistical prediction methods , based on the similarity - analogy theory , searching anomaly theory and the theory of ore - controlling by quantitative assemblage of metallotects , can b...The system of mineral deposit statistical prediction methods , based on the similarity - analogy theory , searching anomaly theory and the theory of ore - controlling by quantitative assemblage of metallotects , can be summarized into the following aspects : (1) concluding main ore - controlling conditions and ore - hunting indicators from typical deposits; (2)establishing geological concept model of deposits ; (3)selecting geological variable and dividing study units and granting specific value for each variable; (4) by the use of geological and mathematical geology method , building predication model , delineating prospective area for exploration and estimating the total resources; (5) evaluating the prospecting work . It is good practice to use this system for metallogenic prognosis and regional prospecting of gold deposit in East Junggar , Xinjiang and has achieved great success . As a result , we discovered the Kubusu gold mineralized belt . delineated prospective area - estimated total resources of gold in the belt and found out Kubusu gold deposit .展开更多
20162110Chai Fushan(School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China);Chen Jianping Three-Dimensional Geological Data Conversion from FLAC3Dto Surpac Based on C#(Jou...20162110Chai Fushan(School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China);Chen Jianping Three-Dimensional Geological Data Conversion from FLAC3Dto Surpac Based on C#(Journal of Geology,ISSN1674-3636,CN32-1796/P,39(3),2015,p.491-494,4illus.,12refs.)展开更多
20162856 Cao Feng(China Institute of GeoEnvironmental Monitoring,Beijing 100081,China);Zheng Yuejun A Study of Suitable Area Selection for Artificial Recharge Based on GIS Technology—Taking Wulabo Basin as an Case St...20162856 Cao Feng(China Institute of GeoEnvironmental Monitoring,Beijing 100081,China);Zheng Yuejun A Study of Suitable Area Selection for Artificial Recharge Based on GIS Technology—Taking Wulabo Basin as an Case Study(Hydrogeology and Engineering Geology,ISSN1000-3665,CN11-2202/P,42(6),2015,p.44-50,8illus.,6tables,18refs.)展开更多
文摘This is a brief review of alternative methods of problem-solving in geoscience with emphasis on the role of mathematical geology. It is desirable to maintain a clear-cut distinction between reliable facts which can be stored in data banks and concepts that can be incorporated in the specifications of statistical models designed for specific purposes. If possible, subjective probabilities should be incorporated in hypotheses that are to be tested by statistical inference.
基金Supported by the China National Science and Technology Major Project(41872153)Northeast Petroleum University Research Startup Fund(1305021839)。
文摘To evaluate the lateral sealing mechanism of extensional fault based on the pressure difference between fault and reservoir, an integral mathematical-geological model of diagenetic time on diagenetic pressure considering the influence of diagenetic time on the diagenetic pressure and diagenetic degree of fault rock has been established to quantitatively calculate the lateral sealing ability of extensional fault. By calculating the time integral of the vertical stress and horizontal in-situ stress on the fault rock and surrounding rock, the burial depth of the surrounding rock with the same clay content and diagenesis degree as the target fault rock was worked out. In combination with the statistical correlation of clay content, burial depth and displacement pressure of rock in the study area, the displacement pressure of target fault rock was calculated quantitatively. The calculated displacement pressure was compared with that of the target reservoir to quantitatively evaluate lateral sealing state and ability of the extensional fault. The method presented in this work was used to evaluate the sealing of F_(1), F_(2) and F_(3) faults in No.1 structure of Nanpu Sag, and the results were compared with those from fault-reservoir displacement pressure differential methods without considering the diagenetic time and simple considering the diagenetic time. It is found that the results calculated by the integral mathematical-geological model are the closest to the actual underground situation, the errors between the hydrocarbon column height predicted by this method and the actual column height were 0–8 m only, proving that this model is more feasible and credible.
文摘After long-term development, mathematical geology has today become an independent discipline. Big Data science, which has become a new scientific paradigm in the 21st century, gives rise to the geological Big Data, i.e. mathematical geology and quantitative geoscience. Thanks to a robust macro strategy for big data, China＇s quantitative geoscience and geological big data＇s rapid development meets present requirements and has kept up with international levels. This paper presents China＇s decade-long achievements in quantitative prediction and assessment of mineral resources, geoscience information and software systems, geological information platform development, etc., with an emphasis on application of geological big data in informatics, quantitative mineral prediction, geological environment and disaster management, digital land survey, digital city, etc. Looking ahead, mathematical geology is moving towards ＂Digital Geology＂, ＂Digital Land＂ and ＂Geological Cloud＂, eventually realizing China＇s grand ＂Digital China＂ blueprint, and these valuable results will be showcased on the international academic arena.
基金The study is supported by the key project of the State Education Committee of China
文摘The system of mineral deposit statistical prediction methods , based on the similarity - analogy theory , searching anomaly theory and the theory of ore - controlling by quantitative assemblage of metallotects , can be summarized into the following aspects : (1) concluding main ore - controlling conditions and ore - hunting indicators from typical deposits; (2)establishing geological concept model of deposits ; (3)selecting geological variable and dividing study units and granting specific value for each variable; (4) by the use of geological and mathematical geology method , building predication model , delineating prospective area for exploration and estimating the total resources; (5) evaluating the prospecting work . It is good practice to use this system for metallogenic prognosis and regional prospecting of gold deposit in East Junggar , Xinjiang and has achieved great success . As a result , we discovered the Kubusu gold mineralized belt . delineated prospective area - estimated total resources of gold in the belt and found out Kubusu gold deposit .
文摘20162110Chai Fushan(School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China);Chen Jianping Three-Dimensional Geological Data Conversion from FLAC3Dto Surpac Based on C#(Journal of Geology,ISSN1674-3636,CN32-1796/P,39(3),2015,p.491-494,4illus.,12refs.)
文摘20162856 Cao Feng(China Institute of GeoEnvironmental Monitoring,Beijing 100081,China);Zheng Yuejun A Study of Suitable Area Selection for Artificial Recharge Based on GIS Technology—Taking Wulabo Basin as an Case Study(Hydrogeology and Engineering Geology,ISSN1000-3665,CN11-2202/P,42(6),2015,p.44-50,8illus.,6tables,18refs.)
