立井井壁沥青板滑动层配合比及性能实验研究

马头门底板下段立井井壁位于以泥岩为主的软弱岩层。泥岩易风化且遇水膨胀,当井筒掘砌后,其过程中的岩体膨胀变形压力巨大。于是对该段软弱岩层,提出采用新型井壁结构,其中沥青板滑动层是一种重要复合材料,为确保其力学特性满足设计要求,进行了其配合比及性能试验研究。

沥青块滑动层与可缩板复合井壁的应用

介绍了张双楼煤矿西风井沥青块滑动层与可缩板复合井壁结构、施工工艺以及在井筒表土段的应用。

立井复合井壁沥青板调压滑动层的制备及应用

立井井壁位于以泥岩为主的软弱岩层中可能会导致井壁结构失效。为保证井壁的安全可靠,决定采用外层沥青+内层钢筋砼复合井壁。本文介绍了该井壁结构中沥青板调压滑动层的加工工艺。

采空塌陷区立井井壁结构的研究与设计

针对在采空塌陷区修建立井井壁的技术难题,以淮南新庄孜矿技改新增副井、回风井为例,对两井筒过采空塌陷区的关键层位井壁结构,采用柔性、让压、可缩性钢纤维混凝土复合井壁。通过试验,获取了钢纤维混凝土和沥青滑动层的最优配合比,并对竖向可缩性接头的结构形式和参数进行了设计。

Experimental study on sliding shaft lining mechanical mechanisms under ground subsidence conditions

Aimed at more than 60 shaft linings damaged in Huaibei, Datun, Xuzhou and Yanzhou mine areas, this paper presents a new type of sliding shaft lining with asphalt blocks sliding layer. By model test, it is obtained that the deformation characteristics and the mechanical mechanisms of the sliding shaft lining under the condition of ground subsidence. The research results provide a testing basis for the sliding shaft lining design. By now, this kind of sliding shaft lining had been applied in 9 shafts in China and Bangladesh.