选择理想靶区建立中国第一个EGS 示范工程,在中国节能减排及应对全球气候变化过程中具有重大的战略意义。根据全国大地热流图、居里面深度图、新构造运动图、酸性岩体分布图,通过剖面分析,将中国EGS 靶区分为板块构造活动、近代火山、沉积盆地和酸性岩体分布4 种类型,分析了各类型干热岩靶区的产热特征。遴选了10 个靶区通过建立指标体系进行EGS 示范工程选址指标分析,指标包括大地热流、热储岩性、覆盖层厚度、居里面深度、地应力(构造历史)、放射性生热率、地温梯度、区域经济8 个指标,在对指标分析打分的基础上最终确定羊八井、阳江、漳州、福州等为中国EGS 潜在靶区。通过典型地区的热结构剖面分析说明了评价结果的合理性。
Selection of ideal target site to establish the enhanced geothermal system (EGS) trial project in China has strategic significance to China in the process of energy conservation and coping with global climate change. Four types of target sites, namely plate tectonic activity, recent volcano, sedimentary basins and acidic rock areas are defined by their differential heat generation characteristics based on profile analysis using the national terrestrial heat flow map, Curie depth map, neotectonic map and acid rock distribution map. Eight indexes including heat flow, reservoir lithology, caprock thickness, Curie depth, tectonic stress, radioactive heat generation rate, temperature gradient and regional economics are used for establishing the target site evaluation system. Ten potential sites are evaluated comprehensively based on the index matrix system. The results show that Yangbajing, Yangjiang, Zhangzhou, Fuzhou could be the optimum target sites. Heat structure section analysis of two potential target sites was carried out to demonstrate the rationality of the matrix evaluation.
[1] Tester J W, Anderson B J, Batchelor A S, et al. The future of geothermal energy- Impact of enhanced geothermal system (EGS) on the united states in the 21 century[M]. Cambridge: Massachusetts Institute of Technology, 2006.
[2] 蔺文静, 刘志明, 马峰, 等. 我国陆区干热岩资源潜力估算[J]. 地球学报, 2012, 33(5): 807-811. Lin Wenjing, Liu Zhiming, Ma Feng, et al. An estimation of HDR resources in China′s mainland[J]. Journal of Geological, 2012, 33(5): 807-819.
[3] 汪集旸, 胡圣标, 庞忠和, 等. 中国大陆干热岩地热资源潜力评估[J]. 科技导报, 2012, 30(32): 25-31. Wang Jiyang, Hu Shengbiao, Pang Zhonghe, et al. Estimate of geothermal resources potential for hot dry rock in the continental area of China[J]. Science & Technology Review, 2012, 30(32): 25-31.
[4] 国家能源局, 财政部, 国土资源部, 住房城乡建设部. 关于促进地热能开发利用的指导意见[J]. 太阳能, 2013(4): 15-18. National Energy Administration, The Ministry of Finance, Ministry of Land and Resources, Ministry of Housing Urban and Rural Development. Guidance on the promotion of geothermal energy development and utilization[J]. Soler Energy, 2013(4): 15-18.
[5] Brown D W, Duchane D V, Heiken G, et al. Mining the earths heat: Hot dry rock geothermal energy[R]. Idaho Falls: Los Alamos National Laboratory, 2012.
[6] Sanyal S K, Butler S J. An analysis of power generation prospects from enhanced geothermal systems[C]. Proceedings World Geothermal Congress, Bali, Indonesia, April 25-29, 2010.
[7] Genter A, Hill A J, Budd A R, et al. Current status of the EGS soultz geothermal project[C]. Proceedings World Geothermal Congress, Bali, Indonesia, April 25-29, 2010.
[8] Goldstein B A, Hill A J, Budd A R, et al. Hot rocks in Australianational outlook[C]. Stanford University, Stanford, California, January 28-30, 2008.
[9] Genter A, Traineau H, Dezayes C, et al. Fracture analysis and reservoir characterization of the granitic basement in the HDR Soultz Project (France)[J]. Geothermal Science & Technology, 1995, 4(3): 189-214.
[10] Genter A, Traineau H, Bourgine B, et al. Over 10 years of geological investigations within the European Soultz HDR project[C]. Proceedings World Geothermal Congress, Kyushu- Tohoku, Japan, May 28-June10, 2000.
[11] 曾玉超, 苏正, 吴能友. 增强型地热系统储层试验与性能特征研究进展[J]. 矿业研究与开发, 2012, 32(3): 22-27. Zeng Yuchao, Su Zheng, Wu Nengyou. Advances in reservoir test and performance characteristics of enhanced geothermal system[J]. Mining Research and Development, 2012, 32(3): 22-27.
[12] 汪洋. 利用地下流体氦同位素比值估算大陆壳幔热流比例[J]. 地球物理学报, 2000, 43(6): 762-769. Wang Yang. Estimations of the ratio of crust/mantle heat flow using helium isotope ratio of underground fluid[J]. Chinese Journal of Geophysics, 2000, 43(6): 762-769.
[13] 孙知新, 李百祥, 王志林. 青海共和盆地存在干热岩可能性探讨[J]. 水文地质工程地质, 2011, 38(2): 119-124. Sun Zhixin, Li Baixiang, Wang Zhilin. Exploration of the possibility of hot dry rock occurring in the Qinghai Gonghe Basin[J]. Hydrogeology& Engineering Geology, 2011, 38(2): 119-124.
[14] 汪集旸, 黄少鹏. 中国大陆地区热流数据汇编[J]. 地质科学, 1988 (2): 196-204. Wang Jiyang, Huang Shaopeng. Compilation of heat flow data in the China continental area[J]. Scientia Geologica Sinica, 1988(2): 196- 204.
[15] 汪集旸, 黄少鹏. 中国大陆地区热流数据汇编(2版)[J]. 地震地质, 1990, 12(4): 351- 366. Wang Jiyang, Huang Shaopeng. Compilation of heat flow data in the China continental area (2nd ed)[J]. Seismilogy and Geology, 1990, 12 (4): 351-366.
[16] 胡圣标, 何丽娟, 汪集旸. 中国大地热流数据汇编(3版)[J]. 地球物理学报, 2001, 44(5): 612-624. Hu Shengbiao, He Lijuan, Wang Jiyang. Compilation of heat flow data in the china continental area (3rd ed)[J]. Chinese Journal of Geophysics, 2001, 44(5): 612-624.
[17] 万天丰, 褚明记, 陈明佑. 福建省岩石圈的热状态与地热资源的远景评价[J]. 地质学报, 1988, 62(2): 178 -188. Wan Tianfeng, Chu Mingji, Chen Mingyou. Thermal regimes of the lithosphere and geothermal resources potential in Fujian province[J]. Journal of Geological, 1988, 62(2): 178-188.
[18] 廖志杰. 福建无岩浆热源的深循环水热系统[J]. 现代地质, 2012, 26 (1): 85-98. Liao Zhijie. Deep-circulation hydrothermal systems without magmatic heat source in Fujian Province[J]. Geoscience, 2012, 26(1): 85-98.
