Engineering characteristics and control technology of soft rock deterioration effect based on water inducement

• Published in: Mei kuang an quan Vol. 52; no. 6; pp. 109 - 116
• Main Author: LYU Yuguang, LYU Wenbin, XIAO Qinghua, WANG Yongbao, XIA Yujun, ZHANG Yongqiang, WU Su
• Format: Journal Article
• Language: Chinese
• Published: Editorial Office of Safety in Coal Mines 01.06.2021
• Subjects: deterioration effect control; deterioration engineering characteristics; flood prevention and control; low water management; soft rock deterioration effect
• ISSN: 1003-496X
• DOI: 10.13347/j.cnki.mkaq.2021.06.019

In order to solve the technical problem of soft rock engineering deterioration with expansive water-rich in Inner Mongolia Shanghaimiao Mining Co., Ltd., the experiment of the influence of water content on the mechanical properties of rock was carried out. It is found that the physical and mechanical properties of rock are the internal cause of engineering deterioration, while water is the external cause. Based on this, the concepts of “soft water treatment first” and “large water prevention and control small water management” are proposed, some technical measures are taken, such as drainage and mining, bottom arch water-proof, funnel water-connecting, deep-digging water nest, wide-spread awning, hose diversion, centralized drainage, concrete shotcrete sealing, etc. The engineering practice shows that the convergence rate of roadway section decreases from 40.752% to 10.673%, the recovery efficiency increases from 81,000 t/mon to 463,000 t/mon, and the tunneling efficiency increases from 190.6 m/month to 520.3