综放工作面顶板来压规律及其控制技术研究
|
摘要
为保证工作面来压期间的安全回采,将伯方煤矿3205综放实验工作面实际测得的循环阻力、初撑力、阻力分布情况以及时间加权平均阻力作为参考依据,计算得在平均周期内来压步距为15m,采用深孔爆破技术对来压期间的工作面顶板进行放顶,爆破放顶后,来压期间采空区顶板全部垮落,采空区充填严实。
In order to ensure safe mining during weighting period of working face, the actual measured cyclic resistance, initial support force, resistance distribution and time weighted average resistance of 3205 fully mechanized caving experimental face in Bofang Coal Mine are taken as reference basis, and the weighted step distance of weighting in average period is calculated to be 15 meters. The roof of working face during weighting period is caved by deep hole blasting technology, after blasting caving, during weighting period. The roof of the goaf falls completely and the goaf is filled tightly.
In order to ensure safe mining during weighting period of working face, the actual measured cyclic resistance, initial support force, resistance distribution and time weighted average resistance of 3205 fully mechanized caving experimental face in Bofang Coal Mine are taken as reference basis, and the weighted step distance of weighting in average period is calculated to be 15 meters. The roof of working face during weighting period is caved by deep hole blasting technology, after blasting caving, during weighting period. The roof of the goaf falls completely and the goaf is filled tightly.
引文
[1]熊祖强,刘成威.“两硬”围岩孤岛工作面矿压显现规律研究[J].煤炭工程,2014,46(10):169-172.
[2]高杰,屠世浩,李明,等.两软薄煤层综采面矿压显现规律研究[J].中国煤炭,2010,36(04):52-55.
[3]刘奎,刘长友,李德文,等.超长综放孤岛面矿压规律及支架适应性研究[J].采矿与安全学报,2007,24(01):84-87.
[4]张宏伟,孟祥宇.两硬薄煤层工作面围岩运动规律与矿压显现规律研究[J].矿冶工程,2012,32(08):483-485.
[5]付玉平,宋选民,邢平伟,等.浅埋薄煤层综采工作面矿压规律及围岩控制研究[J].中国煤炭,2010,36(11):40-42.
[6]唐军华,白海波,杜锋.采场支承压力分区变异特征研究[J].采矿与安全工程学报,2011,28(02):293-297.
[2]高杰,屠世浩,李明,等.两软薄煤层综采面矿压显现规律研究[J].中国煤炭,2010,36(04):52-55.
[3]刘奎,刘长友,李德文,等.超长综放孤岛面矿压规律及支架适应性研究[J].采矿与安全学报,2007,24(01):84-87.
[4]张宏伟,孟祥宇.两硬薄煤层工作面围岩运动规律与矿压显现规律研究[J].矿冶工程,2012,32(08):483-485.
[5]付玉平,宋选民,邢平伟,等.浅埋薄煤层综采工作面矿压规律及围岩控制研究[J].中国煤炭,2010,36(11):40-42.
[6]唐军华,白海波,杜锋.采场支承压力分区变异特征研究[J].采矿与安全工程学报,2011,28(02):293-297.