Geothermal energy promises to turn defenders into strikers

To this end, he suggested that we should further strengthen the research on geothermal resources in the Tibetan Plateau and its surrounding areas, sort out the key geological problems of geothermal exploitation, solve the technical problems of deep geothermal energy development and utilization, reveal the impact of major Cenozoic tectonic-thermal events on deep geothermal energy, and carry out research on key issues of deep underground high-temperature energy storage systems.

"Seismic induced by deep geothermal mining is an international research hotspot, although China has accumulated in this area, it is still necessary to sort out key scientific issues such as the dynamic failure law and failure criteria of complex geothermal rock mass, the fracture activation and expansion law under multi-field coupling conditions, and the multi-field coupling disturbance process and main control factors to induce earthquakes." Combined with the national strategic needs, the research direction framework of induced earthquakes in deep geothermal in 2025 is formulated." Pang Zhonghe pointed out.

Professor Guo Qinghai of China University of Geosciences (Wuhan), who is in charge of the project "Development Strategy of Research and Development of high-temperature hydrothermal geothermal resources in Southwest China", said that hydrothermal geothermal resources are currently the main object of human development and utilization, and the construction of large-scale geothermal power stations in the world is preferred to high-temperature hydrothermal geothermal areas. The global total geothermal power generation reached 14,369MW, most of which came from the contribution of high-temperature hydrothermal systems.

In his view, high-temperature hydrothermal geothermal resources are more valuable and efficient in theoretical research, development and utilization than medium and low temperature hydrothermal geothermal resources. In addition, under the current economic and technological conditions, the development and utilization of high-temperature hydrothermal geothermal resources is more common and feasible than that of dry-hot rock geothermal resources.

Guo Qinghai pointed out that the distribution of hydrothermal geothermal resources in China is not uniform, especially the high-temperature hydrothermal geothermal resources are mainly distributed in the southwest of southern Tibet, western Yunnan, western Sichuan and southeast Taiwan.

"To find out the distribution law of high-temperature hydrothermal geothermal resources, the formation mechanism of high-temperature hydrothermal system is the key. In addition, it is necessary to identify the weak links in the completed investigation and research of high-temperature hydrothermal system in southwest China, and clarify the development bottleneck of its exploration, development and utilization technology." Guo Chung-hai stressed.

It is urgent to strengthen policy support

In recent years, China's investment in geothermal energy technology research and development has gradually increased, but the factors restricting the development of geothermal energy still exist, among which the high cost is an important reason for many investors to be discouraged.

A silver sheet, as long as the hand on it can generate current, the reporter experienced the latest research and development of Li Kewen team thermal volt power generation results. "As long as there is a temperature difference, you can convert heat energy into electricity." 'said Lee Kelvin.

Over the years, Li Kewen's team has been concerned about the docking of geothermal energy research and industry, he said frankly, "High-cost high-temperature drilling is still an important constraint on the development and utilization of geothermal energy, the government should increase subsidies and other support, while formulating relevant policies to pay attention to the extension of technology, too fine and too strict are not conducive to the development of new technologies."

"There is a shortage of geothermal research talents in China, and the systematic geothermal energy teaching system from undergraduate, master's and doctoral students should be improved as soon as possible." To this end, China University of Geosciences (Beijing), approved by the Ministry of Education, has set up a new geothermal related undergraduate major. Of course, it is also necessary to avoid blindly following the trend of geothermal discipline. In addition, the government and society should create the right atmosphere of public opinion, raise the wages of young people, and encourage more young people to enter the geothermal and other manufacturing industries. Li Kewen said.

For the "14th Five-Year Plan" period how to better promote the efficient development and utilization of geothermal energy, Wang Jiyang and Pang Zhonghe put forward five suggestions from the system and policy aspects, one is to adjust the "policy heating line" boundary from the Yellow River to the Yangtze River; The second is to promote the "franchise" and other effective market access mode, based on opening up to improve the quality of industrial development; The third is to provide electricity price subsidies for geothermal power generation to change the backward situation of geothermal power generation in China; Fourth, based on the nature of geothermal energy renewable energy, the implementation of tax exemption policy; The fifth is to reform the management mechanism of geothermal mineral rights and form a new mechanism suitable for geothermal fluid minerals.