第
44
卷第
1
0
期
煤 炭
科 学 技 术
Vol.44 No.10
2016
年
10
月
Coal Science and Technology
Oct. 2016
深井高地温工作面煤自燃特点及预控方法研究
马 砺
1,2,3
,
任
立
峰
1,2
,
王
乃
国
4
,
韩 力
4
( 1.
西安
科技大学 西部矿井开采及灾害防治教育部重点实验室
,
陕西 西安
710054; 2.
西安科技大学 安全科学与工程学院
,
陕西 西安
710054;
3.
山东兖矿集团博士后工作站
,
山东 邹城
237500; 4.
山东新巨龙能源有限责任公司
,
山东 菏泽
274918)
摘 要
:
为解决深井开采地温高易导致煤层自燃的难题
,
研究了高地温工作面煤层氧化放热特性及预
控方
法
。
采用傅里叶变换红外光谱仪和大型自然发火试验装置
,
分别测试了高地温对煤活性官能团
和自然发火期的影响
;
现场观测了龙固矿井
2302
高地温综放工作面采空区自燃危险区域
。
研究结果
表明
:
地温为
42 ℃
时
,
煤自然发火期相比地温为
20 ℃
时缩短
25 d;
高地温使煤表面活性官能团数量
及中间活性产物数量增加
,
氧化放热性显著增强
;
氧化升温带范增长
。
针对高地温对供氧
、
蓄热条件
及其氧化放热性的影响
,
提出了采用堵漏和注氮气减少煤体氧化
,
阻化泡沫阻化煤体
,
压注液态二氧
化碳和注胶抑制煤温升高结合的防火方法
。
通过在巨野矿区的现场应用
,
该方法有效控制了高地温
综放工作面采空区煤体自燃
。
关键词
:
高地温
;
煤自燃
;
氧化特性
;
自然发火期
中图分类号
: TD75
文献标志码
: A
文章编号
: 0253
-
2336( 2016) 10
-
0039
-
05
Study on coal spontaneous combustion features and pre
-
control method of high
ground temperature coal mining face in deep depth mine
Ma Li
1,2,3
,Ren Lifeng
1,2
,Wang Naiguo
4
,Han Li
4
( 1. Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi’an University of Science and Technology,Xi’an 710054,
China; 2. School of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China; 3. Post
-
doctoral Workstation,
Yankuang Group,Zoucheng 237500,China; 4. Shandong Xinjulong Energy Company Limited,Heze 274918,China)
Abstract: In order to solve the difficult problems of the high spontaneous combustion danger of seam caused by the high ground tempera-
ture of the coal mining in the deep depth mine,the paper had a study on the seam oxidation and thermal releasing features of the high
ground temperature coal mining face and the pre
-
control method. Fourier transform infrared spectrometer and large spontaneous combustion
experiment device were applied to test the high ground temperature affected to the active functional group and the spontaneous combustion
period of the coal. A site observation was conducted on the spontaneous combustion danger area in the goaf of No. 2302 high ground tem-
perature coal mining face in Longgu Mine. The study results showed that when the ground temperature was 42 ℃ ,the coal spontaneous
combustion period would be reduced by 25 days than when the ground temperature was 20 ℃ . The high ground temperature could make the
coal surface active function group number and the intermediate active product value increased and the oxidation thermal releasing would be
obviously increased. The oxidized temperature rising zone scope would be increased. According to the high ground temperature affected to
the oxygen supply,thermal accumulation condition and the oxidation thermal releasing.The combined fire prevention method was put for-
ward,including using leakage sealing and nitrogen injection to reduce the oxidation of the coal mass,using resist foam to resist coal,using
liquid carbon dioxide pressurized injection and glue injection to inhibition coal temperature rising. With the site application to Juye Mining
Area,the method could affectively control the coal spontaneous combustion in the goaf and high ground temperature coal mining face.
Key words: high ground temperature; coal spontaneous combustion; oxidation features; period of coal spontaneous combustion
收
稿
日期
: 2016
-
05
-
19;
责任编辑
:
王晓珍
DOI: 10.13199 /j.cnki.cst.2016.10. 008
基金项目
:
国家自然科学基金资助项目
( 51574193,51204135) ;
陕西省工业科技攻关资助项目
( 2016
GY
-
191)
作者
简介
:
马 砺
( 1978—) ,
男
,
四川隆昌人
,
教授
,
博士
。Tel: 029
-
85583789,E
-
mail: malifuture@ 126. com
引用格式
:
马 砺
,
任立峰
,
王乃国
,
等
.
深井高地温工作面煤自燃特点及预控方法研究
[J].
煤炭科学技术
,2016,44( 10)
: 39
-
43
.
Ma Li,Ren Lifeng,Wang Naiguo,et al.Study on coal spontaneous combustion features and pre
-
control method of high ground temperature coal
mining face in deep depth mine[J].Coal Science and Technology,2016,44( 10) : 39
-
43.
93