Investigation on Hydraulic Fracturing and Cutting Roof Pressure Relief Technology for Underground Mines: A Case Study

被引：5
|
作者：
Chang, Qingliang [1 ]
Yao, Xingjie [1 ]
Wang, Xiangyu [1 ]
Yang, Sen [1 ]
Sun, Yuantian [1 ]
机构：
[1] China Univ Min & Technol, Minist Educ, Key Lab Deep Coal Resource Min, Sch Mines, Xuzhou 221116, Jiangsu, Peoples R China
来源：
LITHOSPHERE | 2021年 / 2021卷 / 2021期
基金：
中国国家自然科学基金;
关键词：
HARD ROOF; TOP COAL; SIMULATION; ROCK; MECHANISMS; FIELD; GAS;
D O I：
10.2113/2021/4277645
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Using hydraulic fracturing for cutting roof pressure is a critical technology to protect coal pillars. In this paper, based on the engineering background of 18506 working face in the Xiqu Coal Mine, using the methods of theoretical analysis, numerical simulation, and field measurement, a reasonable coal pillar width and practical parameters of hydraulic fracturing are given. The results show that roof cutting can significantly increase the stress in goaf and relieve the advanced pressure of the working face. Taking 18506 working face as the research object, the industrial test is carried out, and the surrounding rock control scheme of hydraulic fracturing and roof cutting is put forward, the mine pressure monitoring results show that the auxiliary roadway of 18506 working face reaches a stable state within 20 days, the deformation and damage degree of roadway surrounding rock are small, and the integrity of surrounding rock is improved.
引用
收藏
页数：15
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