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

Qingliang Chang | Zendy; Xingjie Yao | Zendy; Xiangyu Wang | Zendy; Sen Yang | Zendy; Yuantian Sun | Zendy

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

Author(s) -

Qingliang Chang,

Xingjie Yao,

Xiangyu Wang,

Sen Yang,

Yuantian Sun

Publication year - 2021

Publication title -

lithosphere

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.737

H-Index - 43

eISSN - 1941-8264

pISSN - 1947-4253

DOI - 10.2113/2021/4277645

Subject(s) - roof , coal mining , hydraulic fracturing , mining engineering , geology , coal , geotechnical engineering , deformation (meteorology) , pillar , hydraulic pressure , ground pressure , face (sociological concept) , petroleum engineering , engineering , structural engineering , mechanical engineering , social science , oceanography , sociology , waste management

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.

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