The Preparation And Performance Research Of Freezing Shaft Lining C80 HPC In Extraordinary Depth Surface Soil

At present, coal resources are deep-seated deposit in SanDong, AnHui, HeNan, HeBei province and so on. Newly-built coal mine thrill through surface soil very depth, so shaft lining bear more and more pressure. In order to reduce the thickness of shaft lining and increase its bearing capacity and endurance, high-strength and high-performance concrete (HSAHPC) is adopted to construct freezing shaft lining in extraordinary depth surface soil. This thesis put forward compound principle of C80 HSAHPC according to the construction environment and stress character of freezing shaft linging in extraordinary depth surface soil. At first, selecting raw material through performance measurement, so that can gain excellent raw material of C80 HPC. Secondly, obtaining experimental date by means of orthogonal test, and eliciting optimum mixture ratio through range analysis, variance analysis and regression analysis. Then, having a series of tests to check the working performance, mechanical property and lasting quality, and contrasting these performances between 80 HSAHPC and C40 general concrete. At last, the thesis can get the ultimate bearing capacity of C80 and C40 sidewall through numerical simulation. Through above analysis the thesis educe C80 HSAHPC shaft lining can settle supporting puzzle of freezing mine in extraordinary depth surface soil, because it has high bearing capacity and lasting quality.