A Dissertation In Geodetection And Information Technology

The fault zone is a potentially dangerous geological structure,there is a strong activity and instability,Therefore,the research and Discussion on the characteristics of fault zones is a lasting topic.The Shungengshan fault zone is located in the southern margin of the Huainan area,the southern boundary of the Huainan coalfield,meanwhile,the Huainan area is also the junction between the North China plate and the Southern China plate.Study on the fault zone of Shungengshan,It provides a basis for the development and utilization of Huainan coal field and engineering construction,It also has important geological significance for revealing the evolution rule of plate motion.This article is based on the geological survey of the Huainan area,the related technology principles of high density electrical method and the theoretical basis of fault zone detection are introduced;numerical simulation of fault detection under different devices,electrode spacing,different inclination angles,broken width and water rich conditions is carried out;the electrical response characteristics of faults are analyzed and studied through the field electrical prospecting test results in Shun Gang mountain,then we explore the structural information characteristics of the Shungengshan fault zone.The main conclusions are as follows:(1)The numerical simulation has a certain effect,according to resistivity inversion profile,the fault's basic and positive attributes can be identified effectively,well stratified stratification.The simulation effect of the wenner-schlumberger device is the best,obvious electrical response characteristics of faults and strata.High resolution of small electrode distance,but it limits the depth of exploration.The exact determination of the inclination is difficult,the electrical response of the relative small dip fault is better.The simulation results of different breaking widths show that the broken width value is in good agreement with the established fault width.The response of the normal fault to the water rich is obvious,Reverse fault of rich water simulation profile feature is not obvious rich water.The difference between surface and medium relative to high and low resistivity is different from that of thickness.It is difficult to determine the fault drop value,the electrical response characteristics of the drop variation are not obvious.In a word,numerical simulation shows good electrical response to faults,but the response of individual fault elements is not good,need further study.(2)Analysis based on field test results: The application of high density resistivity method to detect the Shun Gang mountain fault zone is good,different devices and different electrode distances have different discrimination for fault anomaly detection.wenner-schlumberger device has good effect on fault detection,three meters and five meters electrodes are similar to fault detection results,small electrode distance detection has relatively good effect on fault and strata identification,the accuracy of anomaly detection is high,but,there is no advantage in the depth of exploration,In the actual detection process,we should reasonably choose electrode distance to detect with specific detection requirements.(3)The fault of Shungengshan is a thrust nappe fault in principle,the fault direction of the detection area is near east-west,combination of electrical prospecting results in three experimental areas,the fault trend curves synthesized from the main fault surface and the connection points show that the faults are similar to the East and west directions.Integrated all detection sections,It is generally determined that the inclination angle of the main fault of the Shun Gang mountain is approximately 60 degrees to 75 degrees,tendencies toward the South,with the development of the fault to the deep,Inclination has a slow trend,the difference between the top and bottom of the fault is greater than ten meters,limited to exploration depth,there is no accurate determination of the drop value.The fault structure of Shungengshan is relatively complex,we should combine the relevant geological data and different detection technologies and methods to make comprehensive evaluation.