CAJ | 학술논문

在水流的溶蚀、磨蚀和冲蚀作用下，陷落柱内部胶结结构发生破坏并伴有质量流失，当水流作用持续到一定时间，渗流将发生失稳。为了揭示陷落柱的突水机理，利用自主研制的渗透试样压制装置和破碎岩石渗透试验系统进行了胶结破碎泥岩渗透试验，分析了胶结物质、渗透压力、破碎泥岩粒径分布和初始孔隙度对胶结破碎泥岩渗透性的影响。研究表明：1)随着胶结强度的增大，渗流失稳历时变长；采用水泥做胶结剂时，试样中渗透流量趋于稳定，不发生失稳。2)失稳历时随渗透压力按指数函数减小。3)随着Talbol幂指数的增大，试样中大颗粒增多，阻隔水能力增强。4)随着初始孔隙度的增大，试样渗透性增强，渗流失稳历时随初始孔隙度按指数函数减小。
재수류적용식、마식화충식작용하，함락주내부효결결구발생파배병반유질량류실，당수류작용지속도일정시간，삼류장발생실은。위료게시함락주적돌수궤리，이용자주연제적삼투시양압제장치화파쇄암석삼투시험계통진행료효결파쇄니암삼투시험，분석료효결물질、삼투압력、파쇄니암립경분포화초시공극도대효결파쇄니암삼투성적영향。연구표명：1)수착효결강도적증대，삼류실은력시변장；채용수니주효결제시，시양중삼투류량추우은정，불발생실은。2)실은력시수삼투압력안지수함수감소。3)수착Talbol멱지수적증대，시양중대과립증다，조격수능력증강。4)수착초시공극도적증대，시양삼투성증강，삼류실은력시수초시공극도안지수함수감소。
Under the action of corrosion, abrasion and erosion from groundwater, the cementation structure in Karstic collapse column is broken and some particles are lost. As the action continues for a certain time, the seepage burst will occur. In order to study the water inrush mechanism of Karstic col-lapse column, the original designed compacting device and seepage experiment system of broken rock have been used to complete the seepage experiment of cemented broken mudstone. The influence of cementing material, water pressure, broken mudstone size distribution and initial porosity on seepage characteristics has been analyzed. The results have shown that:1) With cementing strength increasing, the duration time of seepage burst gets longer;When the cementing material is cement, the seepage ca-pacity tends towards stability without burst. 2) With the water pressure increasing, the duration time of seepage burst gets shorter by an exponential function. 3) With the Talbol power exponent increasing, the rock particles in big sizes get more and the water-blocking ability strengthens. 4) With initial porosity increasing, the seepage capacity strengthens. The duration time of seepage burst gets shorter through an exponential function.