基于地表温度数据和重力法正演模拟的马鲁古北部哈米顶山地热工作区的地下构造识别

M. Nafian, B. Gunawan, N. R. Permana, R. Umam
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引用次数: 4

摘要

Hamiding山地区是印尼地热潜力最大的地区之一。因此,本研究的目的是利用重力法了解该地区的地下构造。为了关联重力数据,以便获得参数,以测量地表温度的增加,使用支持数据是地表温度。利用正演方法进行导数分析和二维模拟是加强该地区地热潜力的一种方法。根据地表温度图,地热勘探区周围温度为22 ~ 25℃。导数分析结果表明,哈米顶山地热远景受两条不同断裂控制,一条是由老哈米顶破火山口凹陷引起的断裂,另一条是杜科诺山地表下的局部断裂,确定为逆断裂。二维模型确定了地热储层,估计其密度为1.59 gr/cc,由凝灰岩和少量熔岩组成,由于密度值相对较低,深度为-411 - (-1280)m,因此储层内容物以水为主,而储层上方的凝灰岩和粘土嵌套层的密度为2.56 gr/cc,深度为310 - (-1280)m。覆盖层假定为粘土帽层,其密度为1.39 gr/cc,深度为870 -(-620)。©2022 JNSMR UIN Walisongo。版权所有。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Identification of the Subsurface Structure of Geothermal Working Area of the Hamiding Mountain, North Maluku through Land Surface Temperature (LST) Data and Forward Modeling with the Gravity Method
The Mount Hamiding area has one of the largest geothermal potentials in Indonesia to be exploited. Therefore, this research was conducted with the aim of knowing the subsurface structure in the area using the gravity method. To correlate gravity data in order to obtain parameters to measure the increase in surface temperature using supporting data is land surface temperature. Derivative analysis and 2D modeling carried out by forward modeling is one method that can strengthen the geothermal potential in the area. Based on the Land Surface Temperature map, the temperature around the geothermal prospect area is 22 – 25 0C. The results of the derivative analysis show that the geothermal prospect of Mount Hamiding is controlled by two different faults, a fault due to the depression of the old Hamiding caldera and a local fault under the surface of Mount Dukono, which is confirmed as a reverse fault. While the 2D modeling identified the geothermal reservoir layer, which is estimated to have a density of 1.59 gr/cc and consists of a mixture of tuff and minor lava, where the contents of this reservoir are water dominant due to the relatively low-density value with a depth of -411 – (-1280) m, above the reservoir layer it is suspected that the tuff and clay insert layer has a density of 2.56 gr/cc with a depth of 310 – (-1280) m, and the covering layer which is presumed to be a clay cap layer has a density of 1.39 gr/cc with a depth of 870 – (-620). ©2022 JNSMR UIN Walisongo. All rights reserved.
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