As global climate change accelerates and urbanization develops fast, urban civilization construction is confronting a big challenges  against surging urban flooding. Urban resilience infrastructure construction can be paying a key role in reducing urban flooding loss and raising ecological civilization. This paper, aiming at the topic of urban resilience infrastructure construction under ecological civilization, systematically studies 1998 to 2024 relating papers published in Wos and CNIK database, constructs a knowledge graph of urban resilience infrastructures and analyze the research trend of its impacts on urban ecological civilization by means of key words frequency, newly emerging words and quoted analysis. Research paper on urban resilience infrastructures is stably rising in amount, faster especially since 2008 showing a trend of cross-domain cooperation. Research hotspots have turned to  comprehensive measures including low-impact development, sponge cities and resilient cities from earlier engineering measures which were focused on drainage system and anti-flooding engineering, now it develops into blue-green infrastructures (rainfall garden, green roof and wet lands) combined with resilience harness, marking an emphasis on ecological functions and sustainability. Focuses on urban resilience infrastructures vary among researchers globally, most CNKI papers on risks and resilience assessment, while most WoS papers on impacts and measures of climatic changes. This study reveals a trend and an evolutionary rule of research on urban resilience infrastructures under ecological civilization construction, offering references for future studies. This paper presents suggestions on boosting ecological resilience and cross-domain integration to improve urban overall resilience and adaptability as extreme climatic events rise.

Poor connectivity and low permeability of coal fissure system need to be modified by using fracturing technology to increase the production. This paper, based on a case study of CBM wells fracturing technologies of Jincheng anthracite mining group, analyzes the pros and cons of hydraulic fracturing, nitrogen shock fracturing, high-energy gas fracturing and plasma pulse fracturing, compares their improved effects, aiming at offering references for selection of fracturing technologies and research direction. Active hydraulic fracturing is the chief means in raising the CBM production, but needs improvement in loose low-permeability and deep coal seams. Adaptability of gel and clean fracturing fluids to variable CBM reservoirs need further studies, and cost shall be lowered. Nitrogen shock fracturing is currently in tentative stage, which requires further research study in fracturing mechanism and technical adaptability. High-energy gas fracturing is not working well in deep coal seam and thin-bedded reservoirs, needing a technical milestone. Plasma pulse fracturing works well in old wells with excellent effect and should be used widely.