EA

Article http://dx.doi.org/10.26855/ea.2022.12.011

Study on the Spatiotemporal Response Characteristics of Effective Discharge Radius of Bedding Drilling

TOTAL VIEWS: 2249

Qianrong Li

School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China.

*Corresponding author: Qianrong Li

Published: January 12,2023

Abstract

In order to reduce the gas hazard in coal seams and effectively discharge gas at local locations, a new method of drilling cuttings volume and gas desorption index method was used for field measurement, and numerical simulation was used to study the effective discharge radius of bedding drilling at different discharge times and different apertures. Changes under the influence. The determination basis and method of the new drilling cuttings index method are expounded in detail, and the industrial test is carried out in Xiaoxi Coal Mine, Shanxi. For the discharge boreholes of the aperture, the effective discharge radius increases with the increase of the discharge time within a certain period of time; for the discharge boreholes of the same discharge time, the effective discharge radius increases with the increase of the aperture.

References

[1] Liu Guanpeng, Yang Hongmin, Liu Jun, et al. The influence of hole diameter on the effective discharge radius of boreholes [J]. Coal Mine Safety, 2015, 46 (2): 17-20.

[2] Song Jun. Determination of Effective Emission Radius of Advancing Hole with Different Diameter in Pingshang Coal Mine [J]. Safety in coal mines, 2012, 43(10):131-134.

[3] Fan Guoming, Jia Boyu. Study on gas emission radius technology based on drilling cuttings gas desorption index method [J]. Coal and Chemical Industry, 2020, 43(9):95-97.

[4] Lin Haifeng. Investigation on the discharge radius of advanced drilling in the No. 16 coal seam of Fenghuangshan Coal Mine [J]. Energy Technology and Management, 2018, 43(4):46-47.

[5] Liu Jun, Li Ning, Wu Jinqi, et al. Temporal and spatial response of effective influence radius based on drainage borehole with different diameters [J]. Journal of Safety Science and Technology, 2019, 15(8):82-87.

[6] Wang Zhaofeng, Li Yantao, Xia Huihui, et al. Numerical Simulation on Effective Drainage Radius of Drill Hole Along Coal Seam Based on COMSOL [J]. Safety in coal mines, 2012, 43(10):4-6.

[7] Shi Yongwei, Wang Zonglin, Liang Bing, et al. Study on numerical simulation of borehole spacing for gas pre-drainage along coal seam [J]. Journal of Safety Science and Technology, 2017, 13(5):21-27.

[8] Cheng Lei, Cheng Zhikai, Lian Shaopeng, et al. Study on effective discharge radius of advanced borehole with different diameters under time-space effect [J]. Journal of Safety Science and Technology, 2021, 17(9):72-76.

[9] Hou Zhenhai, Zhao Yaojiang, Han Sheng, et al. Numerical Simulation of Gas Flow Laws Around Drillings Based on COMSOL Multiphysics [J]. Safety in coal mines, 2016, 47(2):14-17.

[10] Wei Shanyang, Chen Xuehui, Wang Lei, et al. Study on Numerical Simulation of Gas Pressure Effect on Effective Discharge Radius of Advanced Drilling [J]. Coal Technology, 2015, 34(4):137-139.

[11] Qi Liming, Qi Ming, Chen Xuexue. Theoretical analysis of coal seam gas pressure distribution around drainage hole and its application [J]. China Safety Science Journal, 2018, 28(7):102-108.

[12] Lu Xueshen, Guo Xianlin. Discussion and Optimization on Drainage Radius Measuring Method of Borehole [J]. Coal Science and Technology, 2011, 39(12):65-68.

[13] Liu Liping, Wang Haidong. Determination of Emission Radius for Advanced Drainage Borehole in No.15 Coal Seam of Guishigou Well in No. 5 Coal Mine [J]. CHINA COALBED METHANE, 2019, 16(1):23-27.

[14] Zhang Yuzhu. Determination of working face prediction indicators based on outburst feature of coal seam [J]. Safety in coal mines, 2021, 52(1):152-156.

[15] Chen Feng, Pan Yishan, Li Zhonghua, et al. Analysis and evaluation of effects of borehole pressure relief measures by drilling cutting method [J]. Chinese Journal of Geotechnical Engineering, 2013, 35(2):266-270.

[16] Wu Lei, Dai Guanglong, Liu Yong, et al. Study on Effective Drainage Radius of Advance Borehole Based on Gas Flow Theory [J]. Coal Science and Technology, 2013, 41(2):64-66.

[17] Jiang Wangang. Determination of effective influence radius of drainage boreholes in Fengcheng mining area [J]. Journal of Liaoning Technical University (Natural Science), 2012, 31(5):750-753.

[18] Qi Qingjie, Qi Yun, Zhang Jianguo, et al. Study on optimum drilling parameters for gas extraction in fully mechanized caving face [J]. Journal of Safety Science and Technology, 2018, 14(6):76-83.

[19] Chen Guohong. Mechanism and Measurement of Effective Emission Radius in Layer Coal Different Directions [J]. Safety in coal mines, 2013, 44(5):164-166.

[20] Wang Haidong, Lu Ligang. Research on Measurement Technology of Exhaust Radius of Advanced Drilling Hole in 15# Coal Seam of Guishigoumine [J]. Journal of North China Institute of Science and Technology, 2018, 15(3):21-2.

How to cite this paper

Study on the Spatiotemporal Response Characteristics of Effective Discharge Radius of Bedding Drilling

How to cite this paper: Qianrong Li. (2022). Study on the Spatiotemporal Response Characteristics of Effective Discharge Radius of Bedding Drilling. Engineering Advances2(2), 198-200.

DOI: http://dx.doi.org/10.26855/ea.2022.12.011