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一、锚杆的应用概况锚杆是一种新型的受拉杆件,它的一端与工程建筑物连接,另一端锚固在山坡或地下的岩层或土层中,以承受由于土压力或水压力所产生的推力,从而利用地层的“锚固力”以维持建筑物或岩层的稳定。国外用于隧洞中的小锚杆一般直径为19～25毫米,长3.0～7.0米,间距1.2～2.0米。每根锚杆承受拉力12～30吨。灌浆锚杆大量地用于地下开挖护墙的侧壁支撑、挡土
First, the application of the anchor bolt Overview is a new type of tension rod member, one end of which is connected with the engineering building, and the other end is anchored on the slope or underground rock or soil layer to withstand the earth pressure or water pressure. The thrust is generated so that the “anchoring force” of the formation is utilized to maintain the stability of the building or rock formation. The small bolts used in tunnels in foreign countries generally have a diameter of 19 to 25 mm, a length of 3.0 to 7.0 meters, and a pitch of 1.2 to 2.0 meters. Each anchor rod bears a tensile force of 12-30 tons. Grouting bolts are used extensively for sidewall support and retaining of underground excavation retaining walls