Affiliation:
1. School of Mines Key Laboratory of Deep Coal Resource Mining of the Ministry of Education China University of Mining and Technology Xuzhou Jiangsu 221116 China cumt.edu.cn
Abstract
Abstract
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.
Funder
Basic Research Program of Xuzhou
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Cited by
7 articles.
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