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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 m/month.

During the flood season of 2016, the middle and lower reaches of the Yangtze River suffered the worst flooding since 1999, involving Hunan, Hubei, Anhui, Jiangxi and Jiangsu provinces and the Taihu Basin. Based on the field survey at eight counties on both sides along the Yangtze River in Anhui Province, this paper analyses the features of rainstorm, flood and the resulting disaster in 2016 over there, and identifies problems and difficulties existing in flood prevention and disaster reduction under the new situation of social and economic development. Furthermore, this paper discusses the coping strategies and measures on advancing the comprehensive flood management mode of human-water harmony, managing middle and small rivers and strengthening the key basic research on flood control and disaster reduction under the new situation. [ABSTRACT FROM AUTHOR]