蒙西深部厚煤层大采高综采面覆岩破坏高度研究

doi:10.16265/j.cnki.issn1003-3033.2020.08.006

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (8): 37-43.doi: 10.16265/j.cnki.issn1003-3033.2020.08.006

蒙西深部厚煤层大采高综采面覆岩破坏高度研究

张玉鹏¹ 高级工程师, 张玉军^**2,3 研究员, 刘毅涛⁴ 高级工程师, 宋业杰^2,3, 赵秋阳^2,3

1 中煤西北能源有限公司, 内蒙古鄂尔多斯 017000;
2 中煤科工开采研究院有限公司, 北京 100013;
3 天地科技股份有限公司开采设计事业部, 北京 100013;
4 乌审旗蒙大矿业有限责任公司, 内蒙古鄂尔多斯 017000

收稿日期:2020-05-15 修回日期:2020-07-12 出版日期:2020-08-28 发布日期:2021-07-15
通讯作者: ** 张玉军(1978—),男,河北张家口人,博士,研究员,主要从事矿井水安全与防控、采动岩层控制等方面的研究。E-mail:zhangyujun@tdkcsj.com。
作者简介:张玉鹏 (1971—),男,宁夏中宁人,本科,高级工程师,主要从事煤矿开采技术管理工作。 E-mail:zhyp6188@163.com。
基金资助:
国家自然科学基金面上基金项目资助(51874177)。

Study on overburden failure height of fully mechanized mining face in Mengxi deep mining area

ZHANG Yupeng¹, ZHANG Yujun^2,3, LIU Yitao⁴, SONG Yejie^2,3, ZHAO Qiuyang^2,3

1 China Coal Northwest Energy Limited, Ordos Inner Mongolia 017000, China;
2 CCTEG Coal Mining Research Institute Beijing 100013, China;
3 Department of Coal Mining & Designing, Tiandi Science & Technology Co., Ltd., Beijing 100013, China;
4 Wushenqi Mengda Mining Co., Ltd., Ordos Inner Mongolia 017000 China

Received:2020-05-15 Revised:2020-07-12 Online:2020-08-28 Published:2021-07-15

摘要/Abstract

摘要： 为解决蒙西矿区深部开采受多层含水层威胁条件下,覆岩破坏高度难以准确计算的问题,应用现场实测、数值模拟和相似模拟相结合的方法,研究厚煤层大采高综采覆岩破坏高度。首先,综合采用井上下钻孔联合观测,基于钻孔注水及数控摄像技术,实测纳林河二号矿井厚煤层综采一次采全高条件下的导水裂缝带发育高度;然后,通过构建数值和物理相似模型,并结合全国类似条件矿井实测资料的回归分析,确定蒙西矿区覆岩破坏高度计算方法。结果表明:实测导水裂缝带发育高度与采高比为17.1～22.06;采用相似模拟、数值模拟和理论计算确定该条件下导水裂缝带高度与采高的比值为15～18.8;蒙西深部厚煤层高强度开采工作面覆岩破坏高度可按18倍采高估算。

关键词: 深部厚煤层, 大采高综采, 覆岩破坏, 钻孔注水, 数控摄像

Abstract: In order to address difficulty in predicting height of overburden failure accurately under threat of multi-layer aquifer in Mengxi deep mining area, failure height of fully mechanized mining face was studied through on-site measurement, numerical simulation and physical simulation method. Firstly, development height of water-conducting fracture zone under condition of full mining of thick coal seam in Nalinhe No.2 mine was measured based on combined observation of well-ground boreholes, water injection and camera technology. Then, numerical and physical similarity models were constructed, and calculation method of overburden failure height in Mengxi mining area was determined according to regression analysis of measured data of mines with similar conditions in China. The results show that ratio of water-conducting fracture zone height to mining height is 17.1-22.06 from on-sit measurement and 15-18.8 by similar simulation, numerical simulation and theoretical calculation. It is estimated that overburden failure height of fully mechanized mining face can be 18 times of mining height in Mengxi deep mine area.

Key words: deep mining area, high fully mechanized mining, overburden failure, drilling water injection, camera

中图分类号:

X936

张玉鹏, 张玉军, 刘毅涛, 宋业杰, 赵秋阳. 蒙西深部厚煤层大采高综采面覆岩破坏高度研究[J]. 中国安全科学学报, 2020, 30(8): 37-43.

ZHANG Yupeng, ZHANG Yujun, LIU Yitao, SONG Yejie, ZHAO Qiuyang. Study on overburden failure height of fully mechanized mining face in Mengxi deep mining area[J]. China Safety Science Journal, 2020, 30(8): 37-43.

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蒙西深部厚煤层大采高综采面覆岩破坏高度研究

Study on overburden failure height of fully mechanized mining face in Mengxi deep mining area

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