Time-space-danger coordinated extraction method for coal roadway strip area

• Main Authors: CHEN GUOHONG, WANG ZHONGHUA, LIU JUN, CAO JIANJUN, LU ZHANJIN, LI SHENGZHOU, YI ENBING, HU SHANCHAO, SONG ZEFANG, LI SIQIAN, YANG HUIMING, QU YANSI, LI CHENGCHENG, HE LINPENG, XU ZUNYU, YUAN BENQING, NIU XINGANG, LI SHAOBO, ZHANG YONGJIANG, MENG XIANZHENG
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2020
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention relates to a time-space-danger coordinated extraction method for a coal roadway strip area, and belongs to the technical field of coal mine gas extraction. The method comprises the stepsthat S1, the ''time-space-danger'' difference of different block sections in the coal roadway strip area is analyzed; S2, the gas extraction volume of the different block sections in the coal roadwaystrip area is calculated; S3, the extraction radii of the different block sections in the coal roadway strip area varying along with the extraction time are investigated; S4, on the basis of subtracting the difference of the time required by the construction of extraction drilling holes of the different block sections, the difference for the extraction standard reaching time of the different block sections is calculated; and S5, according to the difference of the extraction standard reaching time, the extraction standard reaching time of the different block sections is adjusted or an anti-reflection technology is adop