Experimental study on hole collapse characterization of gas drainage holes in this coal seam based on fiber bragg grating

ZHANG Chao; CHENG Renhui; HUANG Xiaosheng; FAN Fuhuai; DUAN Chenye

doi:10.12438/cst.2023-0071

Volume 51 Issue 11

Nov. 2023

Turn off MathJax

Article Contents

Abstract

References

COAL SCIENCE AND TECHNOLOGY > 2023 > 51(11): 95-103. > DOI: 10.12438/cst.2023-0071

ZHANG Chao，CHENG Renhui，HUANG Xiaosheng，et al. Experimental study on hole collapse characterization of gas drainage holes in this coal seam based on fiber bragg grating[J]. Coal Science and Technology，2023，51（11）：95−103

. DOI: 10.12438/cst.2023-0071

Citation:

. DOI: 10.12438/cst.2023-0071

Citation:

. DOI: 10.12438/cst.2023-0071

PDF (2639 KB)

Experimental study on hole collapse characterization of gas drainage holes in this coal seam based on fiber bragg grating

ZHANG Chao^{1, 2,},
CHENG Renhui^{1, 2},
HUANG Xiaosheng^{1, 2},
FAN Fuhuai^{1, 2},
DUAN Chenye^{1, 2}

1.
College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
2.
Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi’an University of Science and Technology, Xi’an 710054, China

Funds:

National Natural Science Foundation of China (51974241，52174203)

More Information

Received Date: January 15, 2023
Available Online: November 02, 2023

Graphical Abstract

Abstract

Abstract

Drill hole gas extraction is an important method to solve the problem of gas overrun. However, the mine gas extraction drilling hole is prone to collapse and deformation due to the influence of ground stress and drilling disturbance, which seriously affects the effect of gas treatment. Aiming at the problem that it is difficult to monitor the location of collapsed hole in the gas extraction drillhole of coal seam, a monitoring technology for collapsed hole based on fiber grating intelligent sensing technology was proposed. Firstly, the principle of monitoring drilling hole collapse by fiber grating was explained from the theory of stress monitoring by fiber grating sensors. Based on this, an experimental platform for the hole collapse characterization based on fiber grating was built. The hole collapse monitoring experiments of three types of grating arrangements (0°, 90° and 180°) under different amount of collapsed coal were carried out, the changes of grating measurement wavelength offset and extraction flow rate with the amount of collapsed coal were studied, and the collapse level of drillhole was classified. The experimental results shown that, the accuracy of collapsed hole monitoring was the highest when the grating measurement point was located below the substrate material, the relationship between the central wavelength offset Δλand the amount of collapsed coalmwas $m = 3.017\Delta \lambda$ , and the relationship between the extraction flow rateQand the wavelength offset Δλwas $Q = 8.72E - 7x^3 + 2.30E - 4x^2 - 0.18x + 30$ . The decay rate of extraction flow was used as the criterion of collapsing hole to divide the three levels of collapsed hole: Class I collapsed hole with the extraction flow decayed to 90%, Class II collapsed hole with the extraction flow decayed from 90% to 50%, and Class III collapsed hole with the extraction flow decayed to less than 50%. Finally, the effectiveness of fiber grating collapsed hole monitoring technology was verified through a field test in 2802 working face of Zhangcun coal mine of Lu'an Group, and it was found that the distribution of collapsed-hole locations after 30 days of drilling was similar to that of the initial period after the drilling was completed. In the field test, five drill holes were successfully located and repaired based on the proposed collapsed hole monitoring technique, and the pure volume of gas extraction from the repaired drill holes was improved by 37.79% compared to that before the repair.
- gas extraction,
- borehole collapse,
- fiber grating,
- wavelength shift,
- hole collapse monitoring

FullText(HTML)

References (29)

References

[1]	袁亮,张通,张庆贺,等. 双碳目标下废弃矿井绿色低碳多能互补体系建设思考[J]. 煤炭学报,2022,47(6):2131−2139. YUAN Liang,ZHANG Tong,ZHANG Qinghe,et al. Construction of green, low-carbon and multi-energy complementary system for abandoned mines under global carbon neutrality[J]. Journal of China Coal Society,2022,47(6):2131−2139.
[2]	袁亮. 废弃矿井资源综合开发利用助力实现“碳达峰、碳中和”目标[J]. 科技导报,2021,39(13):1. YUAN Liang. Comprehensive development and utilization of abandoned mine resources help to achieve the goal of “carbon peaking and carbon neutralization”[J]. Science and Technology Herald,2021,39(13):1.
[3]	袁亮. 深部采动响应与灾害防控研究进展[J]. 煤炭学报,2021,46(3):716−725. YUAN Liang. Research progress of mining response and disaster prevention and control in deep coal mines[J]. Journal of China Coal Society,2021,46(3):716−725.
[4]	袁亮. 我国深部煤与瓦斯共采战略思考[J]. 煤炭学报,2016,41(1):1−6. YUAN Liang. Strategic thinking of simultaneous exploitation of coal and gas in deef mining[J]. Journal of China Coal Society,2016,41(1):1−6.
[5]	王建强,张杰,杜学明. 复杂地层高位定向长钻孔成孔工艺研究与应用[J]. 煤炭科学技术,2021,49(8):168−173. WANG Jianqiang,ZHANG Jie,DU Xueming. Research and application of high level directional long drilling technology in complex formation[J]. Coal Science and Technology,2021,49(8):168−173.
[6]	包若羽. 松软煤层瓦斯抽采钻孔“同心环”加固密封技术研究与应用[J]. 煤炭科学技术,2022,50(5):164−170. BAO Ruoyu. Research and application of “concentric ring” reinforcement sealing technology for gas drainage drilling in soft coal seam[J]. Coal Science and Technology,2022,50(5):164−170.
[7]	王力,姚宁平,姚亚峰,等. 煤矿井下碎软煤层顺层钻完孔技术研究进展[J]. 煤田地质与勘探,2021,49(1):285−296. WANG Li,YAO Ningping,YAO Yafeng,et al. Research progress of borehole completion technology for broken soft coal seam in coal mine[J]. Coal Geology and Exploration,2021,49(1):285−296.
[8]	申凯,刘延保,巴全斌,等. 煤矿瓦斯抽采钻孔修护技术研究进展[J]. 矿业安全与环保,2020,47(6):102−106. SHEN Kai,LIU Yanbao,BA Quanbin,et al. Progress in research on drilling repair and protect technology for gas drainage in coal mine[J]. Mining Safety and Environmental Protection,2020,47(6):102−106.
[9]	张学博,王文元,蔡行行. 深部煤层抽采钻孔变形失稳影响因素研究[J]. 煤炭科学技术,2021,49(5):159−166. ZHANG Xuebo,WANG Wenyuan,CAI Xingxing. Study on influencing factors of deformation and instability of deep coal seam drainage borehole[J]. Coal Science and Technology,2021,49(5):159−166.
[10]	康永华,王济忠,孔凡铭,等. 覆岩破坏的钻孔观测方法[J]. 煤炭科学技术,2002,30(12):26−28. KANG Yonghua,WANG Jizhong,KONG Fanming,et al. Bore hole survey method for overburden failure[J]. Coal Science and Technology,2002,30(12):26−28.
[11]	杨荣明,陈长华,宋佳林,等. 神东矿区覆岩破坏类型的探测研究[J]. 煤矿安全,2013,44(1):25−27. YANG Rongming,CHEN Changhua,SONG Jialin,et al. Detection study of overlying strata failure types in shendong mining area[J]. Safety in Coal Mines,2013,44(1):25−27.
[12]	张凯,李东会,梁雁侠. 三轴加载煤样声波速度与孔隙率关系试验研究[J]. 煤炭科学技术,2020,48(5):63−68. ZHANG Kai,LI Donghui,LIANG Yanxia. Experimental study on relationship between acoustic velocity and porosity of coal samples under tri-axial loading[J]. Coal Science and Technology,2020,48(5):63−68.
[13]	王云刚,邓万九,张宏图,等. 低围压煤样破裂过程次声波响应特征研究[J]. 中国安全科学学报,2020,30(2):14−20. WANG Yungang,DENG Wanjiu,ZHANG Hongtu,et al. Infrasonic wave response characteristics of coal samples in fracture process under low confining pressure[J]. China Safety Science Journal,2020,30(2):14−20.
[14]	任敏,王力,钟思萍,等. 利用阵列声波测井资料预测煤系地层压裂裂缝高度[J]. 中国煤层气,2015,12(5):14−18. REN Min,WANG Li,ZHONG Siping,et al. Using the array acoustic logging data to predict fracture height of the coal measures strata[J]. China Coalbed Methane,2015,12(5):14−18.
[15]	赵洪宝,张勉,张欢,等. 瓦斯抽采钻孔稳定性动态监测装置研发及应用[J]. 煤炭科学技术,2018,46(1):127−132. ZHAO Hongbao,ZHANG Mian,ZHANG Huan,et al. Development and application of stability dynamic monitoring and measuring device to gas drainage borehole[J]. Coal Science and Technology,2018,46(1):127−132.
[16]	崔峰,贾冲,来兴平,等. 缓倾斜冲击倾向性顶板特厚煤层重复采动下覆岩两带发育规律研究[J]. 采矿与安全工程学报,2020,37(3):514−524. CUI Feng,JIA Chong,LAI Xingping,et al. Research on development law of overlying rock two zones under repeated mining in extra-thick coal seam with gently inclined and brusting liability roof[J]. Journal of Mining & Safety Engineering,2020,37(3):514−524.
[17]	魏世明,马智勇,李宝富,等. 围岩三维应力光栅监测方法及相似模拟实验研究[J]. 采矿与安全工程学报,2015,32(1):138−143. WEI Shiming,MA Zhiyong,LI Baofu,et al. Study on the monitoring method of three-dimensional stress with FBG in surrounding rock and the simulation experiment[J]. Journal of Mining & Safety Engineering,2015,32(1):138−143.
[18]	宁殿艳. 煤层底板突水光纤光栅多参数传感监测系统研究[J]. 煤炭工程,2022,54(8):115−121. NING Dianyan. Monitoring system of coal floor water inrush based on fiber grating multi-parameter sensor[J]. Coal Engineering,2022,54(8):115−121.
[19]	兰建功,张红俊. 基于光纤光栅传感器的巷道矿压监测方法研究[J]. 煤炭技术,2022,41(2):121−124. LAN Jiangong,ZHANG Hongjun. Research on roadway ground pressure monitoring method based on grating fiber sensor[J]. Coal Technology,2022,41(2):121−124.
[20]	李虎威,方新秋,梁敏富. 基于光纤光栅传感技术的顶板离层监测系统[J]. 煤矿安全,2016,47(4):143−145. LI Huwei,FANG Xinqiu,LIANG Minfu. Roof separation monitoring system based on fiber grating sensor technology[J]. Safety in Coal Mines,2016,47(4):143−145.
[21]	路俊维,马雪松,马林霏. 基于光栅传感器的煤矿巷道锚杆受力监测技术[J]. 煤炭技术,2022,41(7):179−181. LU Junwei,MA Xuesong,MA Linfei. Monitoring technology of bolt’s sress of coal mine roadway based on raster sensor[J]. Coal Technology,2022,41(7):179−181.
[22]	彭泓,刘亚飞. 基于光纤光栅技术的巷道支护锚杆受力监测[J]. 煤炭科学技术,2022,50(6):61−67. PENG Hong,LIU Yafei. Stress monitoring of roadway supporting bolt based on fiber bragg grating technology[J]. Coal Science and Technology,2022,50(6):61−67.
[23]	梁敏富,方新秋,柏桦林,等. 温补型光纤Bragg光栅压力传感器在锚杆支护质量监测中的应用[J]. 煤炭学报,2017,42(11):2826−2833. LIANG Minfu,FANG Xinqiu,BAI Hualin,et al. Application of temperature compensation fiber bragg grating pressure sensor for bolting quality monitoring[J]. Journal of China Coal Society,2017,42(11):2826−2833.
[24]	张楠. 基于温度补偿的光纤光栅井下锚杆受力动态监测技术[J]. 煤矿安全,2016,47(4):146−149. ZHANG Nan. Fiber bragg grating dynamic monitoring technology of downhole bolt stress based on temperature compensation[J]. Safety in Coal Mines,2016,47(4):146−149.
[25]	闫文超,蔺兑波,南汉晨,等. 光纤光栅应变传感器在钻孔围压监测中的应用[J]. 中国煤炭,2020,46(8):44−47. YAN Wenchao,LIN Duibo,NAN Hanchen,et al. Application of fiber grating strain sensor in confining pressure monitoring of borehole[J]. China Coal,2020,46(8):44−47.
[26]	吕瑞东,陈涛,范春松,等. 飞秒激光制备光纤Bragg光栅在光纤激光器中的应用[J]. 激光与光电子学进展,2020,57(11):320−336. LYU Ruidong,CHEN Tao,FAN Chunsong,et al. Application of fiber Bragg gratings fabricated by femtosecond laser in fiber lasers[J]. Advances in Laser and Optoelectronics,2020,57(11):320−336.
[27]	郭永兴,熊丽,周兴林,等. 用于机械装备的高性能光纤光栅倾斜传感器[J]. 机械工程学报,2022,58(8):71−78. GUO Yongxing,XIONG Li,ZHOU Xinglin,et al. High performance fiber bragg grating tilt sensor for mechanical equipment[J]. Journal of Mechanical Engineering,2022,58(8):71−78.
[28]	陈勇,刘保林,刘焕淋,等. 基于光纤布拉格光栅的载荷定位与检测方法[J]. 机械工程学报,2016,52(18):8−15. CHEN Yong,LIU Baolin,LIU Huanlin,et al. Load location and measurement system based on fiber bragg grating sensor[J]. Journal of Mechanical Engineering,2016,52(18):8−15.
[29]	郭永兴,熊丽,孔建益,等. 滑动式光纤布拉格光栅位移传感器[J]. 光学精密工程,2017,25(1):50−58. doi: 10.3788/OPE.20172501.0050 GUO Yongxing,XIONG Li,KONG Jianyi,et al. Sliding type fiber bragg grating displacement sensor[J]. Optical Precision Engineering,2017,25(1):50−58. doi: 10.3788/OPE.20172501.0050

[1]	CHAI Jing, WANG Jiaqi, YANG Jianfeng, GAO Dengyan, GAO Kuiying, CHEN Jianhua, LIU Zeyu, YANG Lei. Research on the application of fiber bragg grating monitoring for deformation of coal pillar in sections[J]. COAL SCIENCE AND TECHNOLOGY, 2024, 52(1): 126-137. DOI: 10.12438/cst.2023-1413
[2]	LI Yanhe, YANG Zhanbiao, ZHU Yuanguang, WANG Sheng. Research on deformation monitoring of surrounding rock based on weak fiber grating sensing technology[J]. COAL SCIENCE AND TECHNOLOGY, 2023, 51(6): 11-19. DOI: 10.13199/j.cnki.cst.2022-0510
[3]	ZHAO Zhipeng, YAN Ruibing, CONG Junyu. Advanced deep hole pre - splitting blasting of hard roof type and effect evaluation analysis[J]. COAL SCIENCE AND TECHNOLOGY, 2023, 51(3): 68-76. DOI: 10.13199/j.cnki.cst.2021-0097
[4]	PENG Hong, LIU Yafei. Stress monitoring of roadway supporting bolt based on fiber  bragg grating technology[J]. COAL SCIENCE AND TECHNOLOGY, 2022, 50(6): 61-67.
[5]	WANG Jianda, QIN Kai, DENG Zhigang, ZHAO Shankun, AN Sai, OUYANG Zhenhua. Study on early warning technology of rock burst basedon mining stress monitoring by fiber-grating[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (6).
[6]	ZHANG Jiwei, LIU Zhiqiang, SHAN Renliang, ZHOU Huaqun, ZHENG Xinyun. Review and prospect of abnormal condition of shaft frozen wall monitoring technique in complex formation condition[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (1).
[7]	CHENG Hongming HAN Ying QIAO Yuandong DONG Chuanlong, . Study on collapsed borehole repair and permeability improved technology with borehole drilling along low permeability seam[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (11).
[8]	LI Yi WANG Shuai CAI Jing, . Research and development and application of roof separation indicator based on optical fiber and grating sensing technology[J]. COAL SCIENCE AND TECHNOLOGY, 2015, (4).
[9]	Optical Grating Monitoring and Measuring System of Stress Variation for Backfilled Mass in Goaf of Gateway Retained and Application[J]. COAL SCIENCE AND TECHNOLOGY, 2012, (12).
[10]	Application of Optical Fiber Bragg Grating Sensor to Monitoring and Measuring of Mine Drilling Shaft Liner[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (1).

Cited By

Get Citation

PDF

XML

Article views (97) PDF downloads (40)

Experimental study on hole collapse characterization of gas drainage holes in this coal seam based on fiber bragg grating

Abstract

References

Related Articles

Catalog

Related

Experimental study on hole collapse characterization of gas drainage holes in this coal seam based on fiber bragg grating

Abstract

References

Related Articles

Catalog

Related

Export File

Citation

Format

Content