TITLE:
Experimental Study on the Attenuation Law of Vibration Wave Propagation in Natural Gas Wells in Coal-Gas Cross-Mining Area
AUTHORS:
Junqi Lei, Wen Wang, Kun Yang, Tong Zhang, Runsheng Guo, Yihe Yu
KEYWORDS:
Cross-Mining, Natural Gas Wells, Vibration Waves, Attenuation Patterns, Col-lision Monitoring
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.11 No.4,
November
14,
2023
ABSTRACT: Aiming at the safety distance between coal mining working face and
natural gas wells in the cross-mining area of multiple mineral resources, the
cross- mining
area of gas and coal resources in the Ordos Basin is taken as the engineering background. An
anti-collision early warning technology method based on
vibration wave propagation attenuation monitoring is proposed to prevent
collision accidents between road headers and natural gas wells. Through the steel pipe and
steel pipe concrete knocking vibration test and underground digging vibration
test, the research results show that: The exponential decay coefficients of the vibration
wave in steel pipe, steel pipe concrete and coal rock respectively are 0.1,
0.1140 and 0.03, which are all in accordance with the exponential decay law,
and the vibration wave firstly decays sharply and then decays slowly; the formula for the
distance from the road header
to the natural gas well was derived based on the vibration attenuation formula, to provide a new method
for realizing the problem of precise and coordinated extraction by surface
monitoring of the distance from down hole road headers to gas wells, collision prevention
prediction and warning and prevention of collision of extraction equipment with
gas wells.