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- Studied the shock bump caused by the key stratum movement in Huafeng Colliery using the microseism locating and monitoring technology. 摘要采用微地震定位监测技术对华丰煤矿关键层运动诱发矿震进行了研究。
- The primary study on microseismic locating and monitoring technology of shock bump caused by key stratum movement 关键层运动诱发矿震的微震探测初步研究
- Keywords key stratum movement;shock bump;mining field;microseismic;pressure bump behavior; 关键层运动;矿震;采场;微地震;冲击地压显现;
- key stratum movement 关键层运动
- According to the underground pressure theory, which takes stratum movement as key matter, the nonelastic area occurs in coal body under the action of underground pressure. 根据“以岩层运动为中心”的矿山压力理论,煤体在矿山压力作用下将出现非弹性区。
- The idea of key stratum pressure is put forward, and the ground pressure is mainly influenced by the breakage of key . 提出主关键层来压的新概念,指出回采工作面矿压显现程度主要受主关键层破断的影响。
- The caving of thick and strong roof stratum,key stratum,causes tremendous rock pressure in mine. 采场上覆岩层中的厚硬岩层,即厚硬关键层,其冒落会造成剧烈的矿山压力显现。
- According to the model,applying the cusp catastrophic theory the mechanics mechanism of water inrush is analyzed from key stratum of floor. 当满足关键层失稳的充要力学条件时,承压水底板有可能发生失稳突水。
- Satisfying the sufficient mechanics condition for key stratum instability, a water inrush is likely to happen in the floor. 当满足关键层失稳的充要力学条件时，承压水底板有可能发生失稳突水。
- Based on the structural characteristics of floor in the longwall face, the structural model of the key stratum (KS) in floor is established. 根据采场底板岩体结构特征,建立了底板岩体的关键层(KS)结构模型。
- The overlying strata movement is a complicated dynamic process. 摘要矿山开采引起上覆岩层的移动是一个复杂的动态过程。
- Based on the analyzing of parameter about combinatorial key stratum, the formulae of calculating the roof weighting step is given in this article. 在分析组合关键层有关参数的基础上,推导出了组合关键层初次来压步距和周期来压步距的计算公式。
- The main key stratum that is made up of the hard stratum covering over the coal seam has a great influence on rock burst. 摘要煤层上覆坚硬厚层岩层组成的主关键层对冲击矿压的发生具有强烈的影响。
- Based on the 3D rock cracking imaging, obtained the conclusions: key stratum can be classified according to the special attribution of the microseismic cracking events. 根据岩体在三维空间的破裂成像，得出：可以依据微震破裂事件的空间分布对关键层进行划分；
- The overburden strata movement is a complicated time and space process. 上覆岩层的运动是一个复杂的时空过程。
- The loci of plastic hinge line and the maximum load during first roof weighting are determined by using kinematical method, and the minimum span of roof key stratum is derived. 利用机动法确定了老顶岩板初次来压时载荷的上限值和塑铰线的位置,得到了顶板岩体关键层的最小破断跨距。
- The study indicates that according to the formulae of combinatorial key stratum, coal roof weighting step in the 1203 face in Da-liu-ta mining is co the observation value. 结果表明，以该修正的组合关键层破断距公式计算的大柳塔1203工作面的初次来压步距与实测非常接近。
- Then the predicting the oretic of strata movement and development at home and abroad are introduced.Thirdly brings forward main contents and key technologies of this research. 然后,论述了国内外岩移规律研究的现状及发展趋势,提出了该课题研究的主要研究内容以及关键技术;
- The Ion of plastic hinge line and the maximum load during first roof weighting are determined by using kinematical method, and the minimum span of roof key stratum is derived. 利用机动法确定了老顶岩板初次来压时载荷的上限值和塑铰线的位置，得到了顶板岩体关键层的最小破断跨距。
- Regularity of rock strata movement will be changed by effect of geodynamic underground mining. 在地质动力的作用下,矿山地下开采正常的岩层与地表移动规律将发生变化,甚至会发生突变灾害。
