近距离倾斜煤层群上保护层开采对沿空留巷的影响研究
Study on the influence of upper protective layer mining on gob-side entry retaining in close inclined coal seam group
-
摘要: 为研究近距离倾斜煤层群上保护层工作面开采布置对被保护煤层工作面沿空留巷的影响，以崔家寨煤矿1112工作面地质条件为工程背景，通过现场调研、理论分析、数值模拟和工业性试验等方法，对上保护层工作面卸压保护合理布置方式进行了研究。结果表明：上保护层采空区下方底板整体应力值较低，其下侧实体煤较上侧实体煤下方底板应力值要高；上保护层工作面布置于被保护工作面沿空巷道上方时能够更好的对沿空巷道围岩起到卸压效果。将优化后的上保护层工作面布置方式应用于1114工作面回采期间，现场液压支架工作阻力和沿空巷道围岩矿压监测数据证实了优化后的方案能够有效控制巷道围岩变形，改善沿空侧1114轨道平巷的围岩应力环境，提高沿空留巷服务期的安全性。Abstract: In order to study the influence of the mining layout of the upper protective layer working face in the close inclined coal seam group on the gob-side entry retaining roadway of the working face of the protected coal seam, this paper takes the geological conditions of working face 1112 of Cuijiazhai Coal Mine as the engineering background, through field investigation, theoretical analysis, numerical simulation and industrial test, the reasonable layout of pressure relief protection in the working face of upper protective layer is studied. The results show that the overall stress value of the floor under the goaf of the upper protective layer is lower, and the stress value of the floor under the lower solid coal is higher than that under the upper solid coal; when the working face of the upper protective layer is arranged above the goaf roadway of the protected working face, it can better relieve the pressure on the surrounding rock of the goaf roadway. The optimized working face layout of the upper protective layer is applied to the mining period of 1114 working face. The working resistance of the on-site hydraulic support and the ground pressure monitoring data of the surrounding rock of the goaf side roadway confirm that the optimized scheme can effectively control the deformation of the surrounding rock of the roadway, improve the surrounding rock stress environment of the 1114 track roadway along the goaf side, and improve the safety of the service period of the gob-side entry retaining.
-
-
[1] 石琨．近距离煤层群上保护层煤与瓦斯共采技术研究[J]．煤炭工程，2018，50（7）：64－66. SHI Kun. Research on coal and gas simultaneous mining in upper protective seam of close-distance coal seam group[J]. Coal Engineering, 2018, 50（7）: 64-66.
[2] 江丽丽，杨增强，翟春佳，等．上保护层不合理布置对被保护层应力叠加影响效应研究[J]．矿业安全与环保，2020，47（2）：29－34. JIANG Lili, YANG Zengqiang, ZHAI Chunjia, et al. Study on the influence of the unreasonable layout of upper protective layer on stress superposition of the protected layer[J]. Mining Safety & Environmental Protection, 2020, 47（2）: 29-34.
[3] 周世宁，林柏泉．煤层瓦斯赋存及流动规律[Ｍ]．北京：煤炭工业出版社，1998. [4] 袁亮．卸压开采抽采瓦斯理论及煤与瓦斯共采技术体系[J]．煤炭学报，2009，34（1）：1－8. YUAN Liang. Theory of pressure-relieved gas extraction and technique system of integrated coal production and gas extraction[J]. Journal of China Coal Society, 2009, 34（1）: 1-8.
[5] 袁东升，张子敏．近距离保护层开采瓦斯治理技术[J]．煤炭科学技术，2009，37（11）：48－50. YUAN Dongsheng, ZHANG Zimin. Gas control technology for coal mining in protective seams with closed distance[J]. Coal Science and Technology, 2009, 37（11）: 48-50.
[6] 杨枫，郑金龙．近距离煤层群下保护层开采卸压保护效果研究[J]．煤炭技术，2020，39（1）：134－137. YANG Feng, ZHENG Jinlong. Study of pressure relief and protection effect with lower protective layer mining in close multiple coal seams[J]． Coal Technology, 2020, 39（1）: 134-137.
[7] 撒占友，王立，李磊，等．上保护层开采下伏煤层卸压变形及应力分布[J]．煤矿安全，2020，51（7）：61－65. SA Zhanyou, WANG Li, LI Lei, et al. Decompression deformation and stress distribution of underlying coal seam in upper protective coal seam mining[J]. Safety in Coal Mines, 2020, 51（7）: 61-65.
[8] 冯拥军，周玉军，张喜传．保护层开采被保护层卸压增透效果的应用研究[J]．中国煤炭，2014，40（7）：122. FENG Yongjun, ZHOU Yujun, ZHANG Xichuan. Effect of protective seam mining on pressure relief and permeability enhancement of protected coal seam[J]. China Coal, 2014, 40（7）: 122.
[9] 贺增源．保护层下倾斜煤层回采巷道布置位置的研究[J]．煤矿开采，2016，21（5）：40－43. HE Zengyuan. Layout position studying of mining roadway with inclined coal seam under protective layers[J]. Coal Mining Technology, 2016, 21（5）: 40-43.
[10] 陆明万，张雄，葛东云．工程弹性力学及有限单元法[Ｍ]．北京：清华大学出版社，2005. [11] 殷伟，高焱，陈家瑞，等．上保护层开采下伏煤岩体应力卸压规律力学分析[J]．煤矿安全，2019，50（9）：197－202. YIN Wei, GAO Yan, CHEN Jiarui, et al. Mechanical analysis on pressure relief principle of underlying coal-rock mass with upper protective seam mining methoｄ[J]. Safety in Coal Mines, 2019, 50（9）: 197.
[12] 刘畅，杨增强，弓培林，等．工作面过空巷基本顶超前破断压架机理及控制技术研究[J]．煤炭学报，2017， 42（8）：1932－1940. LIU Chang, YANG Zengqiang, GONG Peilin, et al.Mechanism and control technology of supports crushing induced by main roof’s breaking ahead of workface when crossing abandoned roadway[J]. Journal of China Coal Society, 2017, 42（8）: 1932-1940.
[13] 杨丹，赵海滨，龙哲．ＭＡＴＬＡＢ图像处理实例详解[Ｍ]．北京：清华大学出版社，2013. [14] 陈育民，徐鼎平．ＦＬＡＣ/FＬＡＣ3D基础与工程实例[Ｍ]．北京：中国水利水电出版社，2008. [15] YANG Zengqiang, LIU Chang, TANG Shichuan, et al. Rock burst mechanism analysis in an advanced segment of gob-side entry under different dip angles of the seam and prevention technology[J]. International Journal of Mining Science & Technology, 2018, 28（6）: 891-899. [16] 马紫阳，王同旭，刘灿华，等.深部软岩巷道动态注浆的数值模拟及其应用[J]．煤矿安全，2018，49（8）：239-242. MA Ziyang, WANG Tongxu, LIU Canhua, et al. Numerical simulation of dynamic grouting for deep soft rock roadway and its application[J]． Safety in Coal Mines, 2018, 49（8）: 239-242.
[17] 郭金刚，王伟光，杨增强，等．工作面端头Ｌ形区煤柱体诱发冲击机理及防治研究[J]．矿业科学学报，2017，2（1）：49－57. GUO Jingang, WANG Weiguang, YANG Zengqiang, et al. Research of coal pillar inducing rock burst in L-shaped zone of working face and prevention technology[J]. Journal of Mining Science and Technology, 2017, 2（1）: 49-57.
[18] 张平文，李铁军．数值分析[Ｍ]．北京：北京大学出版社，2015. [19] 杨吉平，朱守颂，章磊，等．松散含水层下巷道围岩监测及控制[J]．煤矿安全，2010，41（1）：60－62. YANG Jiping, ZHU Shousong, ZHANG Lei, et al. Monitoring and control of roadway surrounding rock under loose aquifer[J]． Safety in Coal Mines, 2010, 41（1）: 60-62.
[20] 沈冬生，郭锐．ＫJ216顶板动态监测及矿压分析系统的研究及应用[J]．科技情报开发与经济，2012，22（18）：133－135. SHEN Dongsheng, GUO Rui. The research and application of KJ216 roof dynamic monitoring and mining pressure analysis system[J]. Sci-Tech Information Development & Economy, 2012, 22（18）: 133-135.
[21] 石运保，杨超，宁东兴．充填体内留巷矿压观测与围岩应力分析[J]．煤炭工程，2015，47（2）：59－60. SHI Yunbao, YANG Chao, NING Dongxing. Mine pressure observation and analysis on surrounding rock stress of retained roadway in backfill[J]. Coal Engineering, 2015, 47（2）: 59-60.
-
期刊类型引用(6)
1. 秦兴林，曹垚林，孟祥宁，倪兴. 近距离煤层群上覆煤层开采底板卸压范围及效果考察研究. 煤炭技术. 2025(02): 68-71 . 
百度学术
2. 袁艳梅，乔伟，欧聪，武丰智，陈龙勋. 上覆坚硬厚顶板煤岩卸压增透数值模拟及应用研究. 矿业安全与环保. 2024(02): 67-73 . 百度学术
3. 张俊虎，陈振江，高贤成，张磊，李建华，邓鹏江. 深部大采高工作面沿空留巷围岩控制技术. 煤矿安全. 2024(07): 118-126 . 本站查看
4. 常昭昭. “110工法”条件下综采工作面复合顶板沿空留巷矿压规律研究. 煤矿现代化. 2023(01): 17-20 . 百度学术
5. 朱云龙. 官地矿12607综采面沿空留巷柔模墙支护技术研究. 煤. 2023(03): 4-8 . 百度学术
6. 邸向进. 李雅庄煤矿充填沿空留巷及支护设计应用. 江西煤炭科技. 2023(03): 102-104+107 . 百度学术
其他类型引用(1)
计量
- 文章访问数: 51
- HTML全文浏览量: 0
- PDF下载量: 16
- 被引次数: 7
下载:
