麦垛山煤矿地应力测量及井田应力场特征分析

doi:10.16265/j.cnki.issn1003-3033.2023.S2.0016

中国安全科学学报 ›› 2023, Vol. 33 ›› Issue (S2): 91-95.doi: 10.16265/j.cnki.issn1003-3033.2023.S2.0016

麦垛山煤矿地应力测量及井田应力场特征分析

刘向阳¹(), 刘永豪³, 张顺峰¹, 兰天伟²^,³, 赵文菊⁴

¹ 神华地质勘查有限责任公司, 北京 100085
² 辽宁工程技术大学鄂尔多斯研究院, 内蒙古鄂尔多斯 017010
³ 辽宁工程技术大学矿业学院, 辽宁阜新 123000
⁴ 辽宁省地质矿产调查院有限责任公司, 辽宁沈阳 110031

收稿日期:2023-07-20 修回日期:2023-10-12 出版日期:2023-12-30
作者简介:
刘向阳 (1978—),男,山东桓台人,工程硕士,高级工程师,主要从事煤炭资源绿色勘查管理及研究工作。E-mail:11685078@chnenergy.com.cn。
张顺峰高级工程师
兰天伟教授
赵文菊高级工程师
基金资助:
辽宁省“兴辽英才计划”青年人才拔尖计划项目(XLYC2007042); 辽宁省教育厅基本科研项目(重点项目)(LJKZ0325)

In-situ stress measurement and characteristics analysis of mine field stress field in Maiduoshan coal mine

LIU Xiangyang¹(), LIU Yonghao³, ZHANG Shunfeng¹, LAN Tianwei²^,³, ZHAO Wenju⁴

¹ Shenhua Geological Exploration Company Limited, Beijing 100085, China
² Ordos Research Institute, Liaoning University of Engineering and Technology, Ordos Inner Mongolia 017010, China
³ School of Mining, Liaoning University of Engineering and Technology, Fuxin Liaoning 123000, China
⁴ Liaoning Geological and Mineral Survey Institute Limited Liability Company, Shenyang Liaoning 110031, China

Received:2023-07-20 Revised:2023-10-12 Published:2023-12-30

摘要/Abstract

摘要：

为确定麦垛山煤矿不同构造应力区对采掘工程和矿井动力灾害的影响,采用水压致裂法对麦垛山煤矿6号煤层地应力测量,构建麦垛山煤矿6号煤层顶板岩性数据库和煤岩地质构造模型,并运用“岩体应力状态分析系统”明确麦垛山井田应力分布和分区特征。结果表明:麦垛山煤矿属于典型走滑型应力场,即水平应力为主导的构造应力场,最大主应力为15.02 MPa,方向为N15.6°E,井田范围共划高应力区、应力梯度区、应力正常区及低应力区4个应力区域,并且分别占井田面积7.5%、8%、57.5%和27%。在高应力区和应力梯度区,受采掘扰动叠加影响容易导致巷道发生顶板垮落和底鼓等现象;在应力正常区和低应力区,巷道受原岩应力的影响较小,不易产生能量积聚,巷道破坏的危险性降低。对于正在掘进和未投入使用的巷道,应根据应力分区特征加强对巷道围岩的监测和支护,实现煤矿开采工程与灾害防治工作的分级、分区管理,保障煤矿生产安全。

关键词: 地应力测量, 最大主应力, 应力区域, 构造应力场, 巷道围岩

Abstract:

In order to study the impact of different tectonic stress zones of Maiduoshan coal mine on the mining engineering and mine dynamic disasters, the ground stress of the No. 6 coal seam of Maiduoshan coal mine was measured by the hydraulic fracturing method. A database of the lithology of the roof of the No. 6 coal seam of Maiduoshan coal mine and a model of the geological structure of the coal rock were constructed, and the stress distribution and zoning characteristics of the mine field of Maiduoshan coal mine were determined by the rock stress state analysis system. The results show that Maiduoshan coal mine belongs to a typical slip-type stress field, namely a tectonic stress field dominated by horizontal stress, with a maximum principal stress of 15.02 MPa and a direction of N15.6°E. The mine field is divided into four stress zones, namely, high stress zone, stress gradient zone, stress normal zone, and low stress zone, accounting for 7.5%, 8%, 57.5%, and 27% of the area of the mine field, respectively. In the high stress zone and stress gradient zone, the superimposed influence of mining disturbance can easily lead to the occurrence of roof falls and heaving floor in the roadway, in the stress normal zone and low stress zone, the roadway is less influenced by the stress of the original rock, which is not easy to produce the energy accumulation, and the danger of roadway damage is reduced. For the roadway that is being dug and not put into use, the monitoring and support of the roadway surrounding rock should be strengthened according to the characteristics of the stress zones, so as to realize the hierarchical and zonal management of coal mining engineering and disaster prevention and control and guarantee the safety of coal mine production.

Key words: in-situ stress measurement, maximum principal stress, stress zone, tectonic stress field, roadway surrounding rock

中图分类号:

X936

刘向阳, 刘永豪, 张顺峰, 兰天伟, 赵文菊. 麦垛山煤矿地应力测量及井田应力场特征分析[J]. 中国安全科学学报, 2023, 33(S2): 91-95.

LIU Xiangyang, LIU Yonghao, ZHANG Shunfeng, LAN Tianwei, ZHAO Wenju. In-situ stress measurement and characteristics analysis of mine field stress field in Maiduoshan coal mine[J]. China Safety Science Journal, 2023, 33(S2): 91-95.

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压裂参数			主应力值
P_b	P_r	P_s	σ_H	σ_h	σ_v
15.15	9.61	8.34	15.02	8.15	13.89

岩性分类	弹性模量/GPa	泊松比
泥岩、砂质泥岩	10.57	0.27
粉砂岩、细粒砂岩	14.05	0.21
粗粒砂岩等其它岩性	20.30	0.25
断层落差大于100 m	6.00	0.32
断层落差小于100 m	13.00	0.38

麦垛山煤矿地应力测量及井田应力场特征分析

In-situ stress measurement and characteristics analysis of mine field stress field in Maiduoshan coal mine

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