大安山矿冲击地压能量特征研究

发布时间：2018-05-27 15:15

本文选题：冲击地压 + 地质动力条件　；参考：《辽宁工程技术大学》2015年硕士论文

【摘要】：大安山矿隶属于北京昊华能源股份有限公司,井田内地质构造复杂,井田构造主要以褶曲构造为主,断层次之。大安山矿在开采过程中发生过3次冲击地压都位于向斜构造轴部,向斜轴部存在着能量和应力的积聚。并且随着开采深度的增加,冲击地压的危害程度呈明显上升趋势,严重威胁矿井的安全生产。因此,对大安山矿冲击地压的能量特征进行研究对矿井的安全生产有重要意义。论文以矿山压力与岩层控制理论为基础,综合运用理论分析、实验测试、数值计算等研究方法,分析了大安山矿冲击地压地质动力条件、采动应力变化及能量特征。对大安山矿地应力测量结果进行分析,确定大安山矿处于水平构造应力场。从地质动力条件的角度对大安山矿发生冲击地压的危险性进行评估,确定了大安山矿具备冲击地压发生的地质动力条件。利用FLAC3D数值模拟方法,对+550m轴10下槽东三工作面开采应力变化及残留煤柱对冲击地压的影响进行了分析。确定了+550m轴10下槽东三工作面具备冲击地压的应力条件。建立了“球形体”冲击地压动力系统,分析了冲击地压动力系统的尺度和能量特征,并在此基础上建立了动力系统的能量判据。确定了+550m轴10下槽东三工作面具备冲击地压的能量条件。对+400m轴10槽西三面和+400m轴13槽东四面两个接续工作面从地质动力条件和能量的角度进行冲击地压危险性分析,确定两个接续工作面具有冲击地压的危险。研究成果在大安山矿应用表明,大安山矿具备发生冲击地压的地质动力条件、应力条件和能量条件,揭示了应力和能量特征对冲击地压的控制作用,为大安山矿冲击地压的预测与防治提供了理论基础和科学依据。
[Abstract]:Da'anshan Mine belongs to Beijing Haohua Energy Co., Ltd. In the mining process of Da'anshan Mine, the rock burst occurred three times at the axis of the syncline structure, and the accumulation of energy and stress existed in the inclined axis. With the increase of mining depth, the damage degree of rock burst is obviously rising, which seriously threatens the safety of mine production. Therefore, it is of great significance to study the energy characteristics of rock burst in Da'anshan Mine. Based on the theory of mine pressure and strata control, this paper analyzes the geological dynamic conditions, the variation of mining stress and the characteristics of energy of Da-anshan Mine by using the methods of theoretical analysis, experimental test, numerical calculation and so on. The geostress measurement results of Da'anshan Mine are analyzed, and the horizontal tectonic stress field of Da'anshan Mine is determined. From the point of view of geological dynamic conditions, the risk of rock burst in Da'anshan Mine is evaluated, and the geological dynamic conditions for the occurrence of rock burst in Da 'anshan Mine are determined. By using FLAC3D numerical simulation method, the variation of mining stress and the influence of residual coal pillar on the impact ground pressure of East No.3 working face with 550m axis 10 are analyzed. The stress conditions of rock burst in East third face of 550m axis 10 lower grooves are determined. Based on the analysis of the scale and energy characteristics of the "spherical body" dynamic system, the energy criterion of the dynamic system is established. It is determined that the energy condition of impact ground pressure is available in East third face of 550m axis 10 lower grooves. This paper analyzes the risk of rock burst in the west third face of 400m axis 10 channel and the east four face of 400m axis 13 channel from the angle of geological dynamic condition and energy, and determines that the two connecting faces have the danger of impact ground pressure. The application of the research results in Da'anshan Mine shows that the ore possesses the geological dynamic conditions, stress conditions and energy conditions for the occurrence of the impact ground pressure, which reveals the controlling effect of the stress and energy characteristics on the impact ground pressure. It provides theoretical and scientific basis for prediction and prevention of rock burst in Da'anshan Mine.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD324

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