摘要
正利煤业14-1-201工作面是为坚硬顶板厚煤层综放面,容易大面积悬顶,一次性垮落后形成风暴对人员及设备造成威胁,同时,初次压距过长,造成顶煤丢失。在矿井采用岩煤预裂具致裂被停用的情况下,采用高压水致裂措施,提高现场人员的工作环境,提高矿井的安全利益,同时实现顶煤提前垮落回收,提高矿井经济效益。针对正利煤业14-1-201工作面副巷坚硬顶板难跨问题,通过对比分析卸压方法,选择了水力压裂法进行切顶卸压。进行了钻孔参数设计、分段水力压裂设计,并在方案实施后进效果评价。结果表明:水力压裂切顶卸压方案实施后,巷道围岩变形量减小,悬顶长度缩短至合理范围,卸压效果良好。
Aiming at the difficulty of crossing the hard roof of the auxiliary roadway of Zhengli Coal Industry 14-1-201 face,by comparing and analyzing the pressure relief methods,hydraulic fracturing method was selected to cut the roof and pressure relief.Borehole parameter design and staged hydraulic fracturing design were carried out,and the subsequent effect evaluation of the implementation of the plan was carried out.The results show that after the hydraulic fracturing roof cut and pressure relief program is implemented,the deformation of the surrounding rock of the roadway is reduced,the suspended ceiling length is shortened to a reasonable range,and the pressure relief effect is good.
作者
朱正东
Zhu Zhengdong(Huozhou Coal Power Group,Lüliang Mountains Coal Power Co.,Ltd.,Lüliang033100,Chin)
出处
《煤矿现代化》
2022年第5期52-56,共5页
Coal Mine Modernization
关键词
坚硬顶板
水力压裂
巷道围岩
切顶卸压
hard roof
hydraulic fracturing
roadway surrounding rock
cutting roof to relieve pressure
作者简介
朱正东(1987-),男,安徽淮南人,2011年毕业于安徽理工大学,采矿工程专业,本科,工程师,现在霍州煤电集团吕梁山煤电有限公司,从事生产技术管理工作。
