深部厚煤层综放面支承压力规律及小煤柱应力观测研究

Study on the Bearing Pressure and the Stress Observation of Coal Pillar in Deep Coal Seam

根据新河煤矿530采区5301(70 m)、5302(120 m)、5303(90 m)三个综放工作面开采的地质和技术条件,采用钻孔应力计对工作面侧向、走向支承压力分布规律和小煤柱应力分布特征进行实测,以及对监测数据进行分析,得出工作面不同面宽的侧向支承压力峰值及范围、工作面中部压力峰值及范围、沿空煤柱受力分析及应力分布规律,确定超前支护强度与长度,给出工作面矿压观测数据的参考值,使其更具科学合理性。

According to the 530 mining area of xinhe coal mine 530( 70 m),5302( 120 m),120( 90 m),three of the fully-mechanized caving mining geological and technological conditions,the borehole stress meter on face side,towards the abutment pressure distribution and stress distribution characteristics of small coal pillar was measured,and the analysis of monitoring data,determine the different width of lateral abutment pressure peak value and range,central working pressure peak value and range,stress analysis and stress distribution of coal pillar along the empty,determine forepole intensity and length of working face of mine pressure observation data is given reference value,make it more scientific rationality