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本文论述了英国井筒掘进永久支护作业的现状和今后的发展,其内容包括水文地质数据、设计载荷、设计原理、混凝土设计和井壁设计新原理.目前,英国全部新建煤矿立井井筒都是采用就地浇注混凝土的工艺,该工艺对英国地层条件特别适宜.因为混凝土井壁有能使自己同所掘进井筒围岩紧密结合的能力,而且井壁增量较小,可以有计划地同掘进工艺相结合进行施工.在强度方面,混凝土井壁能充分经受住英国采矿规程中所规定的设计载荷,混凝土也能符合不渗透性和耐久性的要求.
This paper discusses the status quo and future development of permanent wellbore support operations in the UK, including hydrogeological data, design loads, design principles, concrete design and new principles of shaft lining design.At present, all new coal mine shaft bores in the UK are adopted In-situ pouring of concrete, the process is particularly suitable for the formation conditions in the United Kingdom because the concrete wall to make their own well with the surrounding rock wellbore capacity, and the sidewall incremental small, with the planned excavation process In terms of strength, concrete walls can fully withstand the design loads specified in UK mining procedures, and concrete also meets impermeability and durability requirements.