论文部分内容阅读
整体混凝土衬砌支护,是山岭隧道、大型地下硐室及岩石条件较差的矿山巷道的主要支护形式之一。目前坑内混凝土衬砌工程的施工,大都是由人工操作,工人劳动强度大,工效低,进度慢。为了解决这一问题,我们在有关单位的大力协作下,于1967年试制了LJ250型混凝土浇灌机。该机是由河北邢台冶金修造厂制造的。LJ250型浇灌机是以压气为动力的,使搅
The whole concrete lining support is one of main support forms of mountain tunnel, large underground chamber and mine roadway with poor rock condition. At present, the construction of concrete lining works in pit is mostly carried out by manual operation, with high labor intensity, low efficiency and slow progress. In order to solve this problem, we tried out the LJ250 concrete watering machine in 1967 with the concerted efforts of relevant units. This machine is made by Hebei Xingtai Metallurgical Repair Factory. LJ250 type watering machine is pressure-driven, so stirring