Water exploration and drainage technology of first mining face of Ulan Mulun 2-2 coal panel Ⅱ area

doi:10.16265/j.cnki.issn1003-3033.2022.S1.1003

Abstract

Abstract:

In order to improve the prevention and control effect of mine water disaster and reduce the hidden danger of mine safety, firstly, taking the first mining face of panel Ⅱ of Ulan Mulun 2^-2 coal mine as the research object, the hydrogeological conditions of the mining area were analyzed, and the influence of the penetration of water diversion fracture zone on water disaster was explored. Then, the field test of water exploration and drainage was carried out by combining geophysical exploration and drilling to predict and evaluate the water inrush of the working face, and a reasonable drainage system was designed through the calculation of the water amount of the working face. Finally, some measures were put forward to eliminate the hidden danger of water disaster in the working face, such as reserving protective coal pillars and forced drainage of the local roof. The results show that the water-conducting fracture zone runs through the overlying goaf during the mining process of 2^-2 coal, which has a great water inrush risk. After the combination of geophysical exploration and drilling method, the maximum water inrush coefficient of the bottom plate is 0.001 MPa/m, and the possibility of water inrush is slight. The water inrush risk can be effectively reduced by strong drainage of the local roof.

Key words: Ulan Mulun coal mine, water exploration and drainage technology, water disaster prevention and control, fissure zone, drainage system

ZHANG Guoen, QI Yun, ZHAO Jie, SHI Hongkai, JIANG Xiaoyu, HE Xiang. Water exploration and drainage technology of first mining face of Ulan Mulun 2^-2 coal panel Ⅱ area[J]. China Safety Science Journal, 2022, 32(S1): 84-89.

Figures/Tables 6

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References 12

[1]	陈思成, 高运增, 张建义. 极近距离煤层上覆采空区积水超前防治研究[J]. 煤炭技术, 2022, 41(5): 129-132.
	CHEN Sicheng, GAO Yunzeng, ZHANG Jianyi. Study on advanced prevention and control of goaf water by very short distance overlying coal seams[J]. Coal Technology, 2022, 41(5): 129-132.
[2]	魏效农, 方刚, 刘洋, 等. 巷道掘进老空区水害综合防治技术[J]. 煤矿安全, 2020, 51(10): 223-228.
	WEI Xiaonong, FANG Gang, LIU Yang, et al. Comprehensive prevention and control technology of goaf water damage in roadway tunneling[J]. Safety in Coal Mines, 2020, 51(10): 223-228.
[3]	刘晓亮. 鄂尔多斯某矿采空区储水设计及安全性评价[D]. 西安: 西安建筑科技大学, 2020.
	LIU Xiaoliang. Design and safety evaluation on goaf water storage in a coal mine of Ordos[D]. Xi'an: Xi'an University of Architecture and Technology, 2020.
[4]	孙玉学, 张庆松, 王凤刚, 等. 基于TEM的铁矿灰岩富水区探放水综合治理研究[J]. 金属矿山, 2021(5): 197-204.
	SUN Yuxue, ZHANG Qingsong, WANG Fenggang, et al. Study on the integrated treatment of exploration and water-discharge in a water-rich area of iron mine based on TEM[J]. Metal Mine, 2021(5): 197-204.
[5]	刘树新, 杨阳, 王晓, 等. 厚煤层采煤工作面探放水技术的应用[J]. 煤炭技术, 2016, 35(5): 150-152.
	LIU Shuxin, YANG Yang, WANG Xiao, et al. Application of thick coal seam mining face drain technology[J]. Coal Technology, 2016, 35(5): 150-152.
[6]	陈生茂. 沙坪煤矿掘进工作面探放水施工技术[J]. 煤炭工程, 2018, 50(增1): 79-81.
	CHEN Shengmao. Construction technology of water discharge in heading face of shaping coal mine[J]. Coal Engineering, 2018, 50(S1): 79-81.
[7]	辛志强. 上覆煤层采空区积水探放水设计可行性研究[J]. 煤炭工程, 2019, 51(增2): 31-34.
	XIN Zhiqiang. Feasibility study on water exploration and drainage design in goaf of overlying coal seam[J]. Coal Engineering, 2019, 51(S2): 31-34.
[8]	米广锋, 陈冰. 22204综采面水害防治综合技术研究及应用[J]. 煤炭技术, 2019, 38(8): 110-112.
	MI Guangfeng, CHEN Bing. Comprehensive technology research and applocation of flood control in 22204 fully mechanized mining face[J]. Coal Technology, 2019, 38(8): 110-112.
[9]	杨海燕, 刘志新, 张华, 等. 圆锥型场源瞬变电磁法试验研究[J]. 煤田地质与勘探, 2021, 49(6): 107-112.
	YANG Haiyan, LIU Zhixin, ZHANG Hua. Experimental study on transient electromagnetic method with a conical source[J]. Coal Geology & Exploration, 2021, 49(6): 107-112.
[10]	张世威, 王文, 杜伟升. 带压开采底板突水预测研究[J]. 煤炭工程, 2021, 53(5): 125-130.
	ZHANG Shiwei, WANG Wen, DU Weisheng. Prediction of floor water inrush in compensated mining[J]. Coal Engineering, 2021, 53(5): 125-130.
[11]	李立尧, 魏久传, 柳慧敏, 等. 煤系承压含水层静储量计算[J]. 煤炭技术, 2017, 36(8): 121-123.
	LI Liyao, WEI Jiuchuan, LIU Huimin, et al. Calculation of coal stratum aquifer static reserves[J]. Coal Technology, 2017, 36(8): 121-123.
[12]	王兴锋. 复杂水文地质条件工作面采掘期间防治水技术应用[J]. 煤炭科学技术, 2021, 49(增2): 145-151
	WANG Xingfeng. Application of water control technology in mining period of working face with complex hydrogeological conditions[J]. Coal Science and Technology, 2021, 49(S2): 145-151.

孔号	孔深/m	方位角/(°)	仰角/(°)
Z8	735	240	0
Z9	735	140	0
Z22	50	90	30
Z23	50	90	30
Z24	50	90	30
Z25	50	90	30
Z26	50	90	30
Z27	50	90	30
Z28	50	90	30
Z29	50	90	30
Z30	50	90	30
Z31	50	90	30
Z37	735	180	60

编号	施工孔数	含水类型	初始涌水量/ (m³·h^-1)	累计涌水量/ (m³·h^-1)
1	2	裂隙水	0.6~0.7	1.3
2	2	淋水,裂隙水	0.2~0.3	0.5
3	2	淋水,裂隙水	0.1~0.3	0.4