保德煤矿81305综放工作面瓦斯综合治理技术实践

doi:10.16265/j.cnki.issn1003-3033.2024.S1.0116

摘要/Abstract

摘要：

为实现高瓦斯矿井低瓦斯状态下开采,提出一套以煤层瓦斯超前预抽、边采边抽及采空区抽采为主的瓦斯综合治理技术。详细介绍保德煤矿81305综放工作面瓦斯综合治理技术及措施,通过具体实践,详细记录本煤层采前预抽、上下行通风切换、采空区埋管抽放、均压措施、设置导风帘和负压喷雾、合理分配风流、及采终封闭等瓦斯综合防治措施。结果表明:实现81305工作面抽排瓦斯量合计1 854.91万m³,综合抽放率达到81.07%,取得良好应用效果。通过采用多种抽、排方式相结合的瓦斯综合治理技术,可使保德煤矿综放工作面回采期间瓦斯浓度安全可控。

关键词: 高瓦斯矿井, 综放工作面, 瓦斯综合治理, 矿井通风, 瓦斯抽放

Abstract:

In order to realize mining in high gas mines in low gas states, a set of comprehensive gas treatment technology based on over-pre-pumping of coal seam gas, pumping while mining, and pumping and mining in the goaf area was proposed. The comprehensive gas treatment technology and measures for 81305 comprehensively drained working face in Baode Coal Mine were introduced, and the comprehensive gas treatment measures were recorded in detail, such as pre-pumping before mining of the present coal seam, switching between downdraft and updraft, pumping and drainage by buried pipeline in goaf area, pressure equalizing, air guide curtain and negative pressure spray setting, rationally distributed air flow, and closing at the end of mining. The results show that the volume of the gas pumping and drainage in the 81305 working face has reached a total of 18.549 1 million m³, and the comprehensive pumping and drainage rate has reached 81.07%, indicating excellent application effects. The comprehensive gas treatment technology combining various pumping and drainage methods can make the gas concentration in the comprehensively drained working face in Baode Mine safe and controllable during mining.

Key words: high gas mines, comprehensively drained working face, comprehensive gas treatment, mine ventilation, gas pumping drainage

中图分类号:

X936

袁保发. 保德煤矿81305综放工作面瓦斯综合治理技术实践[J]. 中国安全科学学报, 2024, 34(S1): 109-114.

YUAN Baofa. Comprehensive gas treatment technology practice for 81305 comprehensively drained working face in Baode Coal Mine[J]. China Safety Science Journal, 2024, 34(S1): 109-114.

图/表 9

图1

图2

表1

表2

表3

表4

图3

图4

表5

参考文献 14

[1]	石琨. 综放工作面瓦斯综合治理技术[J]. 煤炭科学技术, 2012, 40(5):63-65,85.
	SHI Kun. Gas comprehensive control technology of fully mechanized top coal caving mining face[J]. Coal Science and Technology, 2012, 40(5):63-65,85.
[2]	周锋, 张增辉, 罗伙根, 等. 保德煤矿81306综放工作面高位钻孔最优参数研究[J]. 能源与环保, 2020, 42(6):44-48.
	ZHOU Feng, ZHANG Zenghui, LUO Huogen, et al. Study on optimum parameters of high-level boreholes in 81306 fully-mechanized caving face of Baode coal mine[J]. China Energy and Environmental Protection, 2020, 42(6):44-48.
[3]	李鹏, 安世岗, 梁文勖. 保德煤矿8号未开采煤层瓦斯涌出的地质因素分析[J]. 陕西煤炭, 2024, 43(1):83-86.
	LI Peng, AN Shigang, LIANG Wenxu. Geologic factors analysis of gas inrush of 8# unmined coal seam in Baode coal mine[J]. Shaanxi Coal, 2024, 43(1):83-86.
[4]	张晔. 综采工作面回采过程通风与瓦斯管理研究[J]. 煤矿现代化, 2020(6):63-65.
	ZHANG Ye. Research of ventilation and gas management in fully mechanized face[J]. Coal Mine Modernization, 2020(6):63-65.
[5]	袁亮. 淮南矿区瓦斯治理技术与实践[J]. 煤炭科学技术, 2000(1):7-11,50.
	YUAN Liang. Gas management technology and practice in Huainan mining area[J]. Coal Science and Technology, 2000(1):7-11,50.
[6]	孙炳兴. 保德煤矿综放工作面巷道布置方式优化及应用[J]. 煤炭工程, 2021, 53(5):7-12.
	SUN Bingxing. Roadway layout optimization in fully mechanized top coal caving face in Baode coal mine[J]. Coal Engineering, 2021, 53(5):7-12.
[7]	孟永兵. 综放工作面瓦斯综合抽采治理技术[J]. 煤炭科学技术, 2014, 42(12):125-128.
	MENG Yongbing. Comprehensive gas drainage control technologies in fully mechanized top coal caving mining face[J]. Coal Science and Technology, 2014, 42(12):125-128.
[8]	陈殿赋, 鲁义. 工作面上隅角瓦斯综合治理技术的研究及应用[J]. 煤炭科学技术, 2013, 41(10):57-59,63.
	CHEN Dianfu, LU Yi. Research and application on comprehensive gas treatment technology in upper corner of working face[J]. Coal Science and Technology, 2013, 41(10):57-59,63.
[9]	尤文顺, 亓中立. 神东高产高效保德煤矿瓦斯防治技术[J]. 煤矿安全, 2006(9):10-13.
	YOU Wenshun, QI Zhongli. Gas prevention and control technology of Shendong high-yield and high-efficiency Baode coal mine[J]. Safety in Coal Mines, 2006(9):10-13.
[10]	张永福. 保德煤矿瓦斯综合防治技术[J]. 煤矿安全, 2016, 47(3):68-71,75.
	ZHANG Yongfu. Comprehensive prevent and control technology of gas in Baode coal mine[J]. Safety in Coal Mines, 2016, 47(3):68-71,75.
[11]	张增辉, 陈殿赋, 黄步青, 等. 保德煤矿煤层瓦斯合理预抽期及钻孔布置方式的研究[J]. 矿业安全与环保, 2012, 39(2):41-44.
	ZHANG Zenghui, CHEN Dianfu, HUANG Buqing, ea al. Research on reasonable pre-extraction period and drilling arrangement of coal seam gas in Baode coal mine[J]. Mining Safety & Environmental Protection, 2012, 39(2):41-44.
[12]	陈殿赋, 孙炳兴. 安全高效高瓦斯工作面下行通风技术研究与应用[J]. 矿业安全与环保, 2019, 46(3):57-60,65.
	CHEN Dianfu, SUN Bingxing. Research and application of downward ventilation technology for safe and efficient working face with high gas content[J]. Mining Safety & Environmental Protection, 2019, 46(3):57-60,65.
[13]	林青, 黄旭超, 张朝举, 等. 多重保护层开采高瓦斯综采面瓦斯涌出规律研究[J]. 煤矿开采, 2010, 15(1):94-96.
	LIN Qing, HUANG Xuchao, ZHANG Chaoju, et al. Methane gushing rules of full-mechanized mining face with high methane-content in multi protecting stratum mining[J]. Coal Mining Technology, 2010, 15(1):94-96.
[14]	罗伙根, 张增辉. 保德煤矿81304综放工作面上隅角瓦斯治理[J]. 煤矿安全, 2012, 43(9):126-128.
	LUO Huogen, ZHANG Zenghui. The upper corner gas control in 81304 fully mechanized caving face of Baode coal mine[J]. Safety in Coal Mines, 2012, 43(9):126-128.

下行风时的配风量/ (m³·min^-1)	瓦斯体积分数/%						风排瓦斯量/ m³
	工作面		上隅角		尾排巷
	平均	最大	平均	最大	平均	最大
1 932	0.28	0.38	0.30	0.32	0.48	0.58	6.37
2 163	0.46	0.56	0.46	0.56	0.62	0.74	9.22
2 251	0.34	0.40	0.40	0.44	1.10	1.12	9.67
2 300	0.38	0.44	0.46	0.48	1.20	1.38	10.35

上行风时的配风量/ (m³·min^-1)	瓦斯体积分数/%				风排瓦斯量/ m³
	工作面		上隅角
	平均	最大	平均	最大
2 351	0.38	0.44	0.46	0.48	8.93
2 449	0.30	0.32	0.42	0.48	7.35
2 264	0.30	0.38	0.46	0.56	6.79

上行风时配风量/ (m³·min^-1)	瓦斯体积分数/%				风排瓦斯量/ m³	采空区第二套泵抽放量/m³
	工作面		上隅角			抽放量/ (m³·min^-1)	抽放瓦斯体积分数/%	瓦斯量/ (m³·min^-1)
	平均	最大	平均	最大		抽放量/ (m³·min^-1)	抽放瓦斯体积分数/%	瓦斯量/ (m³·min^-1)
1 781	0.28	0.32	0.44	0.52	4.99	289	3.14	9.07
	0.34	0.42	0.52	0.58	6.06	280	3.12	8.74
	0.34	0.38	0.44	0.48	6.06	278	3.14	8.73

上行风时的配风量/ (m³·min^-1)	瓦斯体积分数/%				风排瓦斯量/ m³	采空区一、二套泵抽放量/m³
	工作面		上隅角			抽放量/ (m³·min^-1)	抽放瓦斯体积分数/%	瓦斯量/ (m³·min^-1)
	平均	最大	平均	最大		抽放量/ (m³·min^-1)	抽放瓦斯体积分数/%	瓦斯量/ (m³·min^-1)
1 751	0.34	0.36	0.34	0.38	5.95	520	3.14	16.33
	0.20	0.24	0.32	0.36	3.50	524	3.14	16.45
	0.30	0.32	0.36	0.38	5.25	530	3.12	16.54

瓦斯涌出量类别	瓦斯量/万m³
掘进及备用面期间风排量	263.25	11.51
本煤层预抽量	220.45	9.60
采空区抽放量	853.18	37.29
回采期间风排量	518.03	22.64
合计	1 854.91	81.07