Analysis of the synergistic prevention and control technology and effects of rockburst and water hazards
QIN Hongyan
HU Shoubin
ZHANG Jiuxin
ZHANG Feng
ZHAO Jingchuan
LUO Jianqiao
ZHANG Tongjun
LI Xuebin
LI Yang
WANG Haidong
Abstract：To address the challenge of integrated prevention and control of coal mine rock burst and water in-rush,taking the 207 working face of Tinnan coal mine in Shaanxi province as the engineering background,a"layer-differentiated regulation" technical approach was proposed.This technology combines the pre-splitting and pressure relief of upper rock strata(for rock burst prevention)with the fragmentation and crushing of low-er rock masses(for water inrush prevention),thus achieving integrated disaster prevention and control.Utili-zing 3DEC discrete element numerical simulation,the response characteristics of rock strata under natural con-ditions and three scenarios involving the weakening of upper,middle,and lower rock strata were systematically compared and analyzed.The effectiveness of the integrated prevention and control strategy was further validated through on-site data analysis.The research shows that the weakening of different layers significantly impacts disaster control.The middle layer weakening can simultaneously weaken the key layer,significantly in-crease the expansion coefficient,reduce the height of the water-conducting fracture zone to 130m,and only re-quires a supplementary pre-splitting of 30m to reduce the risk of rock burst,making it the most effective strate-gy.The upper layer weakening results in a height of 140m(requiring a supplementary pre-splitting of 30m),and the lower layer weakening results in a height of 140m(requiring a supplementary pre-splitting of 35m).A comprehensive comparison reveals that middle layer weakening>upper layer weakening>lower layer weake-ning,which is the optimal strategy for the integrated prevention and control of rock burst and water inrush.On- site application shows that after pre-splitting and weakening,the number of high-energy microseismic events in the 207 working face has significantly decreased,and the energy distribution is controllable,verifying the ef-fective suppression of rock burst.At the same time,the pre-drainage of the roof has reduced the extent of the water-conducting fracture zone's impact on the aquifer,eliminating the risk of water inrush.This study pro-vides a theoretical basis and key technical approach for mines with complex disasters.
Keywords：compound disastersrock burstmine water disasterlayer-differentiated regulation and control
Publication Date：2026-02-28
Online Publishing Date：2026-03-12(First online date of this platform, not the publication date of the document)
Pages：13( 126-138 )