| 摘要 |
<p>The present invention relates to an opening and closing device of an underground excavation opening and, more specifically, to an opening and closing device of an underground excavation opening, which is provided to omit a grouting method preventing a large amount of underground water and soil from escaping from the ground when a work opening is cut during a process of forming an excavation opening by inserting an excavation device such as a semi-shield machine by cutting one side of the work opening (a vertical opening) vertically formed in the ground; perfectly solve existing problems by installing a separate opening and closing device on the outside surface of the excavation opening, wherein the problems are related to time, costs, and environmental pollution due to grouting; and easily form the underground excavation opening. The opening and closing device of an underground excavation opening is installed on one side of the work opening to be able to detached from the work opening by comprising: a main body having a cutter insertion opening formed on one side of the horizontally-positioned central part thereof, and an accommodation space with a constant width formed therein, and of which the upper side is opened and closed by an upper body cover; and a body opening and closing screen lifted by being inserted in a guide groove formed inside the accommodation groove of the body.</p> |
