Research and application of pulverized coal ash ceramsite concrete isolation wall

LI Zhiyong; XIN Min; LIU Xingle; TIAN Xianghong

Safety in Coal Mines > 2021 > 52(7): 79-83.

LI Zhiyong, XIN Min, LIU Xingle, TIAN Xianghong. Research and application of pulverized coal ash ceramsite concrete isolation wall[J]. Safety in Coal Mines, 2021, 52(7): 79-83.

Citation:

LI Zhiyong, XIN Min, LIU Xingle, TIAN Xianghong. Research and application of pulverized coal ash ceramsite concrete isolation wall[J]. Safety in Coal Mines, 2021, 52(7): 79-83.

Citation:

LI Zhiyong, XIN Min, LIU Xingle, TIAN Xianghong. Research and application of pulverized coal ash ceramsite concrete isolation wall[J]. Safety in Coal Mines, 2021, 52(7): 79-83.

PDF (1591 KB)

Research and application of pulverized coal ash ceramsite concrete isolation wall

More Information

Published Date: July 19, 2021

Graphical Abstract

Abstract

Abstract

In order to solve the problem of spontaneous combustion of residual coal in goaf caused by air leakage due to loose sealing at both ends during delayed mining. Taking 3302（lower） fully mechanized caving working face as engineering background, based on the analysis of the mechanical properties of fly ash ceramsite concrete, we obtain the optimal proportion of fly ash ceramsite concrete, and take it as the raw material for field application. The practice shows that the construction of the fly ash ceramsite concrete isolation wall is simple and fast, the O₂volume fraction in the goaf eventually stabilized at about 10%, and the air leakage rate of the goaf is reduced from 20.6% to 4.9%, which reduces the natural possibility of the occurrence of residual coal in the goaf and ensures the production safety.
- isolation wall,
- ceramsite concrete,
- sealing air leakage,
- fire prevention in goaf,
- mix proportion

FullText(HTML)

References (17)

References

[1]	ZHOU Fubao, SHI Bobo, LIU Yingke, et al. Coating material of air sealing in coal mine: Clay composite slurry（CCS）[J]. Applied Clay Science, 2013（80/81）: 299-304.
[2]	周福宝，夏同强，史波波．瓦斯与煤自燃共存研究（ＩＩ）：防治新技术[J]．煤炭学报，2013，38（3）：353－360. ZHOU Fubao, XIA Tongqiang, SHI Bobo. Coexistence of gas and coal spontaneous combustion（II）: new prevention and control technologies[J]. Journal of China Coal Society, 2013, 38（3）: 353-360.
[3]	李振军．通风防灭火技术在煤矿中的应用[J]．中国石油和化工标准与质量，2020，40（9）：230－231.
[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 deep mining[J]. Journal of China Coal Society, 2016, 41（1）: 1-6.
[5]	陆伟，胡千庭．煤低温氧化结构变化规律与煤自燃过程之间的关系[J]．煤炭学报，2007，32（9）：939－944. LU Wei, HU Qianting. Relation between the change rules of coal structures when being oxidized and spontaneous combustion process of coal[J]. Journal of China Coal Society, 2007, 32（9）: 939-944.
[6]	何启林，任克斌，王德明．用红外光谱技术研究煤的低温氧化规律[J]．煤炭工程，2003，35（11）：45－48. HE Qilin, REN Kebin, WANG Deming. The use of infrared spectrum technology to study low-temperature oxidization of coal[J]. Coal Engineering, 2003, 35（11）: 45-48.
[7]	杜海刚，褚迁湘，冯姗．瓦斯抽采与煤自燃防治条件下工作面合理风量研究[J]．煤炭工程，2015，47（11）：70－73. DU Haigang, CHU Qianxiang, FENG Shan. Study on reasonable air volume in working face during gas drainage and coal spontaneous combustion prevention[J]. Coal Engineering, 2015, 47（11）: 70-73.
[8]	梁运涛，罗海珠．中国煤矿火灾防治技术现状与趋势[J]．煤炭学报，2008，33（2）：126－130. LIANG Yuntao, LUO Haizhu. Current situation and development trend for coal mine fire prevention & extinguishing techniques in China[J]. Journal of China Coal Society, 2008, 33（2）: 126-130.
[9]	费金彪．煤自燃阶段判定理论与分级预警方法研究[D]．西安：西安科技大学，2019.
[10]	梁运涛，侯贤军，罗海珠，等．我国煤矿火灾防治现状及发展对策[J]．煤炭科学技术，2016，44（6）：1－6. LIANG Yuntao, HOU Xianjun, LUO Haizhu, et al. Development countermeasures and current situation of coal mine fire prevention & extinguishing in China[J]. Coal Science and Technology, 2016, 44（6）: 1-6.
[11]	宋文忠．无机固化粉煤灰应用技术研究[J]．煤炭科学技术，2004，32（9）：64－67. SONG Wenzhong. Study on applied technology of inorganic solidified fly ash[J]. Coal Science and Technology, 2004, 32（9）: 64-67.
[12]	王国超，邓国红，戴小平．组合撑伞式耐高温快速密闭的研制[J]．煤矿安全，2001，32（4）：10－12.
[13]	张辛亥，郭戎，白枫桐，等．无机发泡充填材料密闭技术[J]．煤矿安全，2015，46（11）：74－76. ZHANG Xinhai, GUO Rong, BAI Fengtong, et al. Sealing technology of inorganic foam filling material[J]. Safety in Coal Mines, 2015, 46（11）: 74-76.
[14]	张英华，李刚强，黄志安，等．新型矿井火灾快速密闭气囊研制[J]．采矿与安全工程学报，2011，28（4）：649－654. ZHANG Yinghua, LI Gangqiang, HUANG Zhian, et al. Research on a new fast sealing device for mine fire[J]. Journal of Mining and Safety Engineering, 2011, 28（4）: 649-654.
[15]	周福宝，刘应科，张仁贵．新型气囊式自动封闭装备研究[J]．中国矿业大学学报，2008，37（5）：604－607. ZHOU Fubao, LIU Yingke, ZHANG Rengui. Research on a new automatic inflatable device for sealing fire areas[J]. Journal of China University of Mining & Technology, 2008, 37（5）: 604-607.
[16]	陈顺．矿用阻燃聚氨酯密闭材料的制备及其性能研究[D]．北京：华北科技学院，2018.
[17]	王海燕，冯超，耿兰．基于能位测定和示踪检测法的地下煤火漏风状态研究[J]．中国安全生产科学技术，2014，10（1）：118－123. WANG Haiyan, FENG Chao, GENG Lan. Study on air leakage in underground coal fire based on energy level and tracer test[J]. Journal of Safety Science and Technology, 2014, 10（1）:118-123.

[1]	RONG Tongrui, HOU Enke, XIA Bingbing. Research on prediction method of coal mining face gas outflow based on quadratic decomposition and BO-BiLSTM combination model[J]. Safety in Coal Mines, 2024, 55(5): 83-92. DOI: 10.13347/j.cnki.mkaq.20222269
[2]	YANG Tao, XIE Ziqi, HU Jingyan, WANG Chen. Study on influencing factors of gas emission in mining face based on regression shapley value decomposition method[J]. Safety in Coal Mines, 2023, 54(11): 18-24. DOI: 10.13347/j.cnki.mkaq.2023.11.005
[3]	WU Bing, GUO Zhiguo, WANG Ziwei. Gas Emission Forecasting at Heading Face Based on ARIMA-GM Model[J]. Safety in Coal Mines, 2015, 46(11): 152-155.
[4]	LIU Yanwei, XUE Wentao, LI Zhiqiang. Problems and Correction of Gas Emission Prediction Model in Mine Statistical Method[J]. Safety in Coal Mines, 2015, 46(5): 176-178,182.
[5]	HAN Yibo. Gas Emission Prediction Based on GA-ELM[J]. Safety in Coal Mines, 2015, 46(4): 166-169.
[6]	DI Zhiqiang. Prediction Method of Gas Emission Based on Multi-source Information Fusion[J]. Safety in Coal Mines, 2014, 45(8): 172-174,178.
[7]	XIAO Peng, LI Shu-gang, SONG Ying, LIN Hai-fei, PAN Hong-yu. Forecasting of Gas Emissions at Fully Mechanized Caving Face in Gassy Mine Based on Multi-variable Gray Model[J]. Safety in Coal Mines, 2013, 44(10): 11-13.
[8]	CHEN Yan-ke, DAI Guang-long, LI Peng, REN Wei-bing. The Application of Equal-dimension New-information Model on Amount of Gas Emission[J]. Safety in Coal Mines, 2013, 44(2): 121-124.
[9]	ZHANG Sheng-jun, ZHU Rui-jie, JIANG Chun-lu. Prediction Model for Gas Emission Quantity in Mining Face Based on Partial Least Squares Regression[J]. Safety in Coal Mines, 2013, 44(2): 7-11.
[10]	WANG Ming, WANG Jian-Jun. Gas Emission Prediction Model of Stope Based on Random Forests[J]. Safety in Coal Mines, 2012, 43(8): 182-185.

Cited By

Get Citation

PDF

XML

Article views (39) PDF downloads (10)

Turn off MathJax

Article Contents

Abstract

References

Research and application of pulverized coal ash ceramsite concrete isolation wall

Abstract

References

Related Articles

Catalog

Research and application of pulverized coal ash ceramsite concrete isolation wall

Abstract

References

Related Articles

Catalog

Export File

Citation

Format

Content