井筒火区综合治理技术
Comprehensive control technology of shaft fire area
-
摘要: 以公乌素煤矿南二井筒火区为背景,采用理论分析和现场实践等手段对井筒火区治理进行研究。结果表明:煤田火区煤体燃烧过程中,煤体燃烧中心出现煤氧化学反应释放大量热量,煤体上覆岩层外载能量与其内能发生失稳,上覆岩层重力失稳,出现变形破坏,形成大量的热破坏裂隙;在热力风压作用下,通过裂隙场地表新鲜空气为煤体燃烧提供充足的氧气,同时燃烧产生的废气也通过这些裂隙排放到大气环境中。为实现全面治理井筒大面积高温火区,提出“区域隔离法”;通过对火区钻孔灌注防灭火材料,钻孔温度呈下降趋势,但由于封堵仍未结束,存在漏风通道,仍有部分钻孔温度长时间保持100~120 ℃,后期仍需采取封堵措施,进行封堵。Abstract: Taking south No.2 shaft fire area of Gongwusu Coal Mine as the background, theoretical analysis and field practice are used to study the comprehensive control of shaft fire area. The results show that in the combustion process of coal body in coal field, coal oxidation reaction releases a lot of heat in the combustion center of coal body, the energy carried outside and internal energy of coal body overlying strata become unstable, and the gravity instability of overlying strata leads to deformation and failure, forming a large number of thermal fracture; under the action of thermal wind pressure, fresh air from the surface of the fracture field provides sufficient oxygen for coal combustion, and waste gas generated by combustion is also discharged into the atmosphere through these fractures. In order to control the large area of high temperature fire area in wellbore, the “area isolation method” is proposed. By pouring anti-fire materials into the borehole in the fire area, the temperature of the borehole showed a downward trend. However, due to the sealing has not been finished yet and there are air leakage passages, the temperature of some boreholes remains at 100 ℃ to 120 ℃ for a long time, and plugging measures should be taken in the later stage.
-
Keywords:
- shaft fire area /
- comprehensive fire prevention /
- fire source /
- burning depth /
- control method
-
-
[1] 张小翌,王德明,杨雪花,等.古书院矿郭山排矸场火区快速治理技术[J].煤矿安全,2019,50(7):96-99. ZHANG Xiaoyi, WANG Deming, YANG Xuehua, et al. Rapid management technology of fire area of guoshan gangue dump in gushuyuan mine[J]. Safety in Coal Mines, 2019, 50(7): 96-99.
[2] 张渊,雷世军.近距离易自燃煤层群开采防灭火技术[J].矿业安全与环保,2017,44(5):86-89. ZHANG Yuan, LEI Shijun. Fire prevention and extinguishing technology for mining of contiguous inflammable coal seams group[J]. Mining Safety & Environmental Protection, 2017, 44(5): 86-89.
[3] 宋吾军,王雁鸣,邵振鲁.高密度电法与磁法探测煤田火区的数值模拟[J].煤炭学报,2016,41(4):899. SONG Wujun, WANG Yanming, SHAO Zhenlu. Numerical simulation of electrical resistance tomography method and magnetic method in detecting coal fires[J]. Journal of China Coal Society, 2016, 41(4): 899-908.
[4] 王文才,张伟,张培,等.大面积煤田露头火区范围的圈划研究[J].煤矿安全,2018,49(4):168-172. WANG Wencai, ZHANG Wei, ZHANG Pei, et al.Study on demarcation of large-scale coalfield outcrop fire area[J]. Safety in Coal Mines, 2018, 49(4): 168-172.
[5] 吴玉海.近距离自燃煤层回撤工作面防灭火技术研究[J].煤炭工程,2017,49(8):134-137. WU Yuhai. Research on fire preventing and extinguishing technology in retreat working face of close-distance spontaneous combustion coal seams[J]. Coal Engineering, 2017, 49(8): 134-137.
[6] 汤笑飞,史广义,张微.露天矿小窑空洞火区治理技术[J].煤矿安全,2018,49(3):75. TANG Xiaofei, SHI Guangyi, ZHANG Wei. Control technology for small mines hollow fire area in open-pit mine[J]. Safety in Coal Mines, 2018, 49(3): 75.
[7] 黄戈,张勋,王继仁,等.近距离煤层上覆采空区自燃形成机理及防控技术[J].煤炭科学技术,2018,46(8):107-113. HUANG Ge, ZHANG Xun, WANG Jiren, et al. Formation mechanism and prevention technology of spontaneous combustion occurred in overburden goaf in contiguous seams[J]. Coal Science and Technology, 2018, 46(8): 107-113.
[8] 张立国,曹乃夫,郭海相.浅埋深近距离煤层开采上覆小窑火区治理技术[J].煤矿安全,2019,50(5):78. ZHANG Liguo, CAO Naifu, GUO Haixiang. Treatment technology of shallow buried depth and close distance coal seam mining overlying small coal mines fire area[J]. Safety in Coal Mines, 2019, 50(5): 78.
[9] 程建圣.受火区威胁易燃煤层回采工作面复合灾害治理研究[J].矿业安全与环保,2018,45(4):118-120. CHENG Jiansheng. Research on the technology of compound disaster control for inflammable coal seam stope threatened by fire area[J]. Mining Safety & Environmental Protection, 2018, 45(4): 118-120.
[10] 苏志伟,张立辉,秦清河,等.补连塔煤矿井上下联合注浆防灭火技术[J].煤矿安全,2018,49(S1):27. SU Zhiwei, ZHANG Lihui, QIN Qinhe, et al. Up and down joint grouting for fire prevention technology in bulianta coal mine[J]. Safety in Coal Mines, 2018, 49(S1): 27.
[11] 包兴东.新疆煤田火区地质灾害治理方法研究[J].煤炭工程,2017,49(12):133-135. BAO Xingdong. Study on geological hazard control methods for fire area in Xinjiang coalfield[J]. Coal Engineering, 2017, 49(12): 133-135.
-
期刊类型引用(0)
其他类型引用(1)
计量
- 文章访问数: 17
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 1
下载:
