基坑石方爆破支撑梁模块式移动棚防护施工技术

对城市地铁车站、地下管廊等采用内支撑支护的基坑石方开挖，以解决基坑石方爆破施工中扬尘和噪声、爆破时产生的飞石问题。在钢筋混凝土支撑横梁上放置U型槽，铺设带滚轮的模块式可移动的钢盖板，实现对基坑内爆破区域的有效覆盖，形成相对密闭的施工空间，起到良好的防护效果，达到安全可靠、环境整洁、绿色文明施工的效果。

Construction Technology of Modular Mobile Shed Protection for Foundation Pit Stone Blasting Supporting Beam

In order to solve the problems of dust, noise and flying rock in the construction of foundation pit rock blasting, the excavation of foundation pit rock excavation with inner support is carried out in subway station and underground pipe gallery. A U-shaped groove is placed on the reinforced concrete supporting beam, and a modular movable steel cover plate with roller is laid, which can effectively cover the blasting area in the foundation pit and form a relatively closed construction space.The design gets good protective effect, obtains safe and reliable, clean environment, and realizes green civilization construction effect.