CAJ | 학술논문

相似模拟实验是研究矿井突水机理的一种重要手段，流固耦合相似模拟材料的高抗水性能至关重要。以石圪台煤矿存在顶板突水溃砂风险的工作面为对象，开展了流固耦合相似材料配比实验工作。针对实际岩层（中砂岩、砂质泥岩、粉砂岩、煤层、细砂岩），利用中粗砂、石膏、碳酸钙、石蜡和凡士林按一定配比均匀搅拌压制成试件，各组试件经自然养护后测定其渗透率，并计算渗透系数，同时结合现场隔水层渗透性参数和岩土渗透性分级标准，将渗透系数小于10－5 cm／s作为抗水性良好的判别准则，共完成48组实验。研究结果表明：随着石蜡掺量增大，试件的强度变大、柔性减弱，当石蜡的掺量大于8％时抗水性能良好；在掺入8％石蜡的基础上，掺入8％凡士林可以减少试件弹性模量，增强变形能力；凡士林和石蜡的合理搭配，优势互补，可制作出抗水性能较好的流固耦合相似材料。
상사모의실험시연구광정돌수궤리적일충중요수단，류고우합상사모의재료적고항수성능지관중요。이석을태매광존재정판돌수궤사풍험적공작면위대상，개전료류고우합상사재료배비실험공작。침대실제암층（중사암、사질니암、분사암、매층、세사암），이용중조사、석고、탄산개、석사화범사림안일정배비균균교반압제성시건，각조시건경자연양호후측정기삼투솔，병계산삼투계수，동시결합현장격수층삼투성삼수화암토삼투성분급표준，장삼투계수소우10－5 cm／s작위항수성량호적판별준칙，공완성48조실험。연구결과표명：수착석사참량증대，시건적강도변대、유성감약，당석사적참량대우8％시항수성능량호；재참입8％석사적기출상，참입8％범사림가이감소시건탄성모량，증강변형능력；범사림화석사적합리탑배，우세호보，가제작출항수성능교호적류고우합상사재료。
Analogue simulation is an important method for researching water burst mechanism of mine and high water-resistance prop-erty of fluid-solid coupling simulation material is the key.For mining face with roof water burst danger in Shigetai Colliery, matching ex-periment of fluid-solid coupling analogue simulation material was made.Applying medium-coarse sand, plaster, calcium carbonate, paraffin and vaseline to stirring evenly with some proportion and simulating actual rock strata ( medium sandstone, sandy mudstone, siltstone, coal-seam, fine sandstone) , permeability ratio of every group specimen was tested and permeability coefficient was calculat-ed.According to classification criterion of permeability parameters, using the permeability coefficient which was smaller than 10-5cm/s as indication value of high water-resistance property, 48 groups experiment was finished.Results showed that with paraffin content in-creasing, specimen's strength rose and flexibility reduced, when paraffin content was larger than 8%, water-resistance property was ex-cellent, on the basis of this, 8%of vaseline mixture could reduce specimen's elastic module and improve deformation ability.Rational mixture of vaseline and paraffin could make fluid-solid coupling material with high water-resistance property.