山东龙郓煤业10·20冲击地压事故区域应力背景与防控研究

P553; 矿山巷道、交通隧道等地下硐室围岩稳定与岩体所处区域地应力环境息息相关.分析区域深部地应力与地下硐室走向、形状等因素的关系,有助于提前规避硐室开挖风险.文章以山东龙郓煤业10·20冲击地压事故为背景,通过地应力测量与监测工作,初步揭示了山东西部地壳浅表层现今地应力环境,结合龙郓煤业矿区附近现今地应力场特征,探讨此次冲击地压事故产生的区域应力背景,并从地应力角度提出相应的防控建议.研究结果表明:测量深度范围内主应力大小总体上与深度成正比线性关系,最大水平主应力值为 3.48~20.76 MPa,随深度增加梯度为 0.0182 MPa/m;最小水平主应力值为3.44~14.95 MPa,...

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Published in地质力学学报 Vol. 30; no. 3; pp. 473 - 486
Main Authors 孟静, 张鹏, 王继明, 丰成君, 范玉璐, 戚帮申, 孙明乾
Format Journal Article
LanguageChinese
Published 中国地质科学院地质力学研究所,北京 100081 01.06.2024
自然资源部新构造与地壳稳定性科技创新团队,北京 100081%中国联合工程有限公司,浙江杭州 310051%中国地质科学院地质力学研究所,北京 100081
自然资源部活动构造与地质安全重点实验室,北京 100081
自然资源部新构造与地壳稳定性科技创新团队,北京 100081
北京市勘察设计研究院有限公司,北京 100081
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ISSN1006-6616
DOI10.12090/j.issn.1006-6616.2023094

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Abstract P553; 矿山巷道、交通隧道等地下硐室围岩稳定与岩体所处区域地应力环境息息相关.分析区域深部地应力与地下硐室走向、形状等因素的关系,有助于提前规避硐室开挖风险.文章以山东龙郓煤业10·20冲击地压事故为背景,通过地应力测量与监测工作,初步揭示了山东西部地壳浅表层现今地应力环境,结合龙郓煤业矿区附近现今地应力场特征,探讨此次冲击地压事故产生的区域应力背景,并从地应力角度提出相应的防控建议.研究结果表明:测量深度范围内主应力大小总体上与深度成正比线性关系,最大水平主应力值为 3.48~20.76 MPa,随深度增加梯度为 0.0182 MPa/m;最小水平主应力值为3.44~14.95 MPa,随深度增加梯度为 0.0130 MPa/m;区内最大水平主应力方位为北东 43°~89°,平均方位为北东 75°;地壳浅表层构造作用以水平构造作用为主,但随着深度的增加,逐渐向垂直构造作用转变;龙郓煤业 10·20冲击地压事故的诱发机制主要是垂向应力大于水平主应力,现今处于拉张应力环境,尤其是巷道走向平行于最大水平主应力方向;建议龙郓煤业巷道轴线与最大水平主应力方向的夹角为60°~90°,同时巷道顶板可以采用拱形顶板,确保巷道岩体稳定.
AbstractList P553; 矿山巷道、交通隧道等地下硐室围岩稳定与岩体所处区域地应力环境息息相关.分析区域深部地应力与地下硐室走向、形状等因素的关系,有助于提前规避硐室开挖风险.文章以山东龙郓煤业10·20冲击地压事故为背景,通过地应力测量与监测工作,初步揭示了山东西部地壳浅表层现今地应力环境,结合龙郓煤业矿区附近现今地应力场特征,探讨此次冲击地压事故产生的区域应力背景,并从地应力角度提出相应的防控建议.研究结果表明:测量深度范围内主应力大小总体上与深度成正比线性关系,最大水平主应力值为 3.48~20.76 MPa,随深度增加梯度为 0.0182 MPa/m;最小水平主应力值为3.44~14.95 MPa,随深度增加梯度为 0.0130 MPa/m;区内最大水平主应力方位为北东 43°~89°,平均方位为北东 75°;地壳浅表层构造作用以水平构造作用为主,但随着深度的增加,逐渐向垂直构造作用转变;龙郓煤业 10·20冲击地压事故的诱发机制主要是垂向应力大于水平主应力,现今处于拉张应力环境,尤其是巷道走向平行于最大水平主应力方向;建议龙郓煤业巷道轴线与最大水平主应力方向的夹角为60°~90°,同时巷道顶板可以采用拱形顶板,确保巷道岩体稳定.
Abstract_FL [Objective]The stability of underground chambers such as mine tunnels and transportation tunnels is closely related to the stress environment of the surrounding rock mass and the geological conditions of the area.Analyzing the relationship between deep-seated stress and factors such as the orientation and shape of underground chambers can help to proactively mitigate the risks associated with chamber excavation.[Methods]This study,set against the background of the rock burst accident on October 20th in the Longyun Coal Industry area in Shandong,reveals the current stress environment of the shallow crustal layers in western Shandong through in-situ stress measurement and monitoring work.[Results]According to the characteristics of the current ground stress field near the Longyun coal mining area,the study investigates the regional stress background that led to the rock burst accident and proposes corresponding prevention and control suggestions from the perspective of ground stress.The results indicate that the magnitude of the principal stress generally increases linearly with depth within the measurement range,with the maximum horizontal principal stress ranging from 3.48 to 20.76 MPa and a gradient of 0.0182 MPa/m with increasing depth,while the minimum horizontal principal stress ranges from 3.44 to 14.95 MPa with a gradient of 0.0130 MPa/m.The maximum horizontal principal stress azimuth in the area ranges from NE 43°to 89°,with an average azimuth of NE 75°.The tectonic action in the shallow crust is mainly horizontal,but with increasing depth,they gradually transition to vertical.[Conclusion]The triggering mechanism of the rock burst accident in the Longyun Coal Industry area on 20th October is primarily attributed to the vertical stress exceeding the horizontal principal stress,indicating a current extensional stress environment,especially when the tunnel orientation is parallel to the direction of maximum horizontal principal stress.It is suggested that the angle between the tunnel axis and the direction of maximum horizontal principal stress in the Longyun Coal Industry area should be between 60°and 90°,and that the tunnel roof can be designed as an arch-shaped roof to ensure the stability of the tunnel rock mass.
Author 范玉璐
孟静
张鹏
王继明
戚帮申
丰成君
孙明乾
AuthorAffiliation 中国地质科学院地质力学研究所,北京 100081;自然资源部活动构造与地质安全重点实验室,北京 100081;自然资源部新构造与地壳稳定性科技创新团队,北京 100081%中国联合工程有限公司,浙江杭州 310051%中国地质科学院地质力学研究所,北京 100081;自然资源部活动构造与地质安全重点实验室,北京 100081;自然资源部新构造与地壳稳定性科技创新团队,北京 100081;北京市勘察设计研究院有限公司,北京 100081
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Author_FL QI Bangshen
WANG Jiming
ZHANG Peng
SUN Mingqian
FENG Chengjun
FAN Yulu
MENG Jing
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DocumentTitle_FL Study on regional stress background and prevention of the rock burst accident on October 20th,2018 in the Longyun Coal Industry area,Shandong,China
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Keywords rock mass stability
岩体稳定性
rock burst
in-situ stress measurement and monitoring
冲击地压
ground stress field characteristics
western shandong
地应力测量与监测
地应力场特征
山东西部
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PublicationTitle 地质力学学报
PublicationTitle_FL Journal of Geomechanics
PublicationYear 2024
Publisher 中国地质科学院地质力学研究所,北京 100081
自然资源部新构造与地壳稳定性科技创新团队,北京 100081%中国联合工程有限公司,浙江杭州 310051%中国地质科学院地质力学研究所,北京 100081
自然资源部活动构造与地质安全重点实验室,北京 100081
自然资源部新构造与地壳稳定性科技创新团队,北京 100081
北京市勘察设计研究院有限公司,北京 100081
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Title 山东龙郓煤业10·20冲击地压事故区域应力背景与防控研究
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