Controlling effect of palaeo-tectonic stress field on gas occurrence

• Autorzy: Gong Weidong , Tian Kunyun , Zhang Ruilin , Xu Xing , Zhang Wenyong , Luo Juan , Yuan Qing

Identyfikatory

DOI

10.24425/ace.2024.149878

• Języki publikacji: EN

Abstrakty

EN

The paleo-tectonic stress fieldwas hereby inverted by using the stereographic projection method through field and underground observations of conjugate shear joints. On the basis of analyzing and studying the characteristics of gas occurrence in mining areas, the control effect of paleo-tectonic stress field on gas occurrence was discussed from three aspects of gas generation, preservation environment and gas migration. The results show that: (1) During the Indosinian and early-middle Yanshan period, the coal seam was buried deep, and the temperature and pressure conditions were suitable for massive gas generation, especially during the Indosinian period featuring massive gas generation and weak gas migration; (2) During the late Yanshan period, the metamorphic evolution rate of coal seams accelerated, secondary hydrocarbon generation occurred in the coal seams, and a large amount of gas was generated. Meanwhile, the gas migration was enhanced. The gas generation amount was much larger than the emission amount, therefore, making it still a period of massive gas generation in general; (3) During the Himalayan period, the coal measure stratum was in the uplift stage, and a large number of geological structures were developed in the stratum. The tectonic stress field in this period caused the escape of massive coal seam gas. Multi-stage tectonic stress field acted on coal measures strata in turn, resulting in gas generation in coal seam and gas migration at the same time. Besides, gas occurrence is the superposition effect of gas generation, preservation conditions, and gas migration in coal seam.

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2024
• Tom: Vol. 70, nr 2
• Strony: 513--526
• Opis fizyczny: Bibliogr. 21 poz., il., tab.

Twórcy

autor

Gong Weidong

• School of Resource and Safety Engineering, Henan University of Engineering, Zhengzhou, China

• https://orcid.org/0000-0002-0269-7900

autor

Tian Kunyun

• School of Resource and Safety Engineering, Henan University of Engineering, Zhengzhou, China

• https://orcid.org/0009-0000-4965-2331

autor

Zhang Ruilin

• School of Resource and Safety Engineering, Henan University of Engineering, Zhengzhou, China

• https://orcid.org/0009-0000-8888-8400

autor

Xu Xing

• School of Resource and Safety Engineering, Henan University of Engineering, Zhengzhou, China

• https://orcid.org/0000-0002-1867-6207

autor

Zhang Wenyong

• School of Resource and Safety Engineering, Henan University of Engineering, Zhengzhou, China

• https://orcid.org/0009-0007-5661-262X

autor

Luo Juan

• School of Resource and Safety Engineering, Henan University of Engineering, Zhengzhou, China

• https://orcid.org/0009-0003-8096-428X

autor

Yuan Qing

• School of Resource and Safety Engineering, Henan University of Engineering, Zhengzhou, China

• https://orcid.org/0009-0001-0645-747X

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