|
|
|
| Practice of short borehole segmented hydraulic fracturing technology for hard roof in Shigetai Mine |
| He Leisheng, Cao Guoyin, Zhu Jizhou |
| Shigetai Mine, Shendong Coal Group of CHN Energy, Yulin 719315, China |
|
|
|
|
Abstract To ensure the stability of the mining gateway in No.31 coal seam of Shigetai Mine, a study on pressure relief and roadway protection technology was carried out in No.31104 main transport gateway. By comparing the advantages and disadvantages of different pressure relief methods, the segmented borehole hydraulic fracturing and segmented roof cutting method was selected. On the basis of analyzing the roof cutting mechanism, the key parameters such as roof cutting height, angle, water injection pressure and borehole spacing were calculated and determined. Two types of boreholes, A and B, were arranged in the main transport gateway, and fracturing was performed every 3 meters with the fracturing time of 30 minutes. The application showed that after hydraulic fracturing, the integrity of the roof surrounding rock was greatly reduced, the deformation speed of the roadway was significantly slowed down, and the deformation amount was reduced by more than 70%, achieving an ideal fracturing effect.
|
|
|
|
|
|
| [ 1 ] 杨俊哲，王振荣，吕情绪，等. 坚硬顶板超前区域治理技术在神东布尔台煤矿的应用[ J ]. 煤田地质与勘探，2022，50（ 2 ）：17 - 23.
[ 2 ] 李 宇，曹志国，刘建宇，等. 厚硬煤层分段水力压裂超前弱化技术研究及应用[ J ]. 煤炭工程，2025，57（ S1 ）：49 - 55.
[ 3 ] 石 垚，汪占领，程利兴，等. 煤矿水力压裂巷道卸压技术应用及效果评价[ J ]. 岩石力学与工程学报，2025，44（ 2 ）：459 - 471.
[ 4 ] 程利兴，张 镇，姜鹏飞，等. 基于顶板水力压裂卸压的应力场响应机制研究及应用[ J ]. 采矿与安全工程学报，2023，40（ 4 ）：722 - 729.
[ 5 ] 陈 真，石 蒙，杨 征，等. 大采高工作面二次动压巷道水力压裂切顶卸压技术研究[ J ]. 中国矿业，2021，30（ 4 ）：134 - 139.
[ 6 ] 邢菲菲，李海宏，李 明. 动压巷道水力压裂切顶卸压技术研究与应用[ J ]. 能源与环保，2024，46（ 2 ）：248 - 255．
[ 7 ] 张庆国. 厚煤层综放工作面沿空掘巷坚硬顶板水力压裂弱化技术研究[ J ]. 中国煤炭，2021，47 （ 12 ）：32 - 37.
[ 8 ] 陈立伟，王东杰，边 乐. 深部强矿压工作面水力压裂裂纹扩展规律研究[ J ]. 河南理工大学学报（自然科学版），2025，44（ 1 ）：18 - 28.
[ 9 ] 葛帅帅，孙 亮，贺丽峰，等. 综采坚硬顶板分段水力压裂卸压护巷技术研究[ J ]. 矿业研究与开发，2024，44（ 7 ）：165 - 173.
[ 10 ] 康红普，冯彦军，张 震，等. 煤矿井下定向钻孔水力压裂岩层控制技术及应用[ J ]. 煤炭科学技术，2023，51（ 1 ）：31 - 44.
[ 11 ] 杨洪增. 坚硬顶板水力压裂切顶卸压技术实践[ J ]. 煤炭与化工，2023，46 （ 1 ）：21 - 24.
[ 12 ] 赵常辛，李晓旭，石 蒙，等. 坚硬顶板切顶卸压技术对巷道围岩变形规律影响[ J ]. 工矿自动化，2024，50（ 1 ）：147 - 154. |
|
|
|
