平朔井工一矿定向水力压裂顶板减小煤柱应力技术研究  

Study on Reducing Stress of Coal Pillar by Directional Hydraulic Fracturing Roof in Pingshuo Jinggong No.1 Mine

作　　者：彭可平 Peng Keping(No.1 Mine of Zhongmei Pingshuo Group Co.,Ltd.,Shanxi,036006)

机构地区：[1]中煤平朔集团有限公司井工一矿,山西036006

出　　处：《当代化工研究》2023年第22期125-127,共3页Modern Chemical Research

摘　　要：随着开采深度增加,平朔井工一矿19110工作面,矿压显现逐步加剧。采用定向水力压裂顶板技术开展井工一矿减小煤柱应力技术研究。结果表明:最大起裂压力达28MPa,采用水力压裂技术治理砂岩坚硬顶板有效;压裂区域不同深度的应力曲线均表现出应力稳定的趋势,未压裂区域不同深度的应力曲线受到邻面回采扰动的影响,应力出现缓慢上升趋势,水力压裂后,有效的提高了临空煤柱的稳定性,对巷道矿压显现有较好的改善效果。With the increase of mining depth,the strata behavior of 19110 working face in Pingshuo No.1 Mine is gradually aggravated.Direc-tional hydraulic fracturing roof technology is used to study the technology of reducing coal pillar stress in Jinggong No.1 Mine.The results show that the maximum pressure of fracture initiation is 28 MPa,and hydraulic fracturing technology is effective in treating hard sandstone roof;Stress curves at different depths in fractured areas show a stable trend of stress,stress curves at different depths in non-fractured areas are affected by adjacent min-ing disturbance,and the stress rises slowly;After hydraulic fracturing,the stability of coal pillar in the air is effectively improved,and the strata be-havior of roadway is well improved.

关 键 词：巷道变形 定向水力压裂 弱化顶板 卸压护巷 

分 类 号：TD[矿业工程]