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苏联东方矿业科学研究所研制的爆炸铺固式抗震锚杆,其杆体为一外径26～32毫米、壁厚2.5～3.5毫米的2号、3号或10号钢管,钢管上,以等于两个管径的间隔套有长度等于2.5倍管径的橡胶套管作抗震件。在安装之前往管内注满水,两端用塞子塞住,穿过此管塞安装导爆索。将垫板活套在钢管上。导爆索引爆后,管子胀开,在橡胶套管之间形成波纹状,使套管两端楔紧于孔壁。因此,当锚杆纵向受载时,载荷越大,套管对孔壁的侧向推力也越大。由于橡胶与
The Soviet explosion of the Eastern Institute of Mining developed explosion-resistant anchor shop explosion-proof, the rod body is an outer diameter of 26 to 32 mm, wall thickness 2.5 to 3.5 mm 2, 3 or 10 steel pipe, equal to two A diameter of the sleeve is equal to the length of 2.5 times the diameter of the rubber casing for earthquake-resistant pieces. Fill the tube with water before installation, plug it with stoppers at both ends, and install the detonating cord through this tube plug. The pad will live on the steel tube. After the detonating cord detonates, the pipe expands and forms a corrugated shape between the rubber sleeves, so that the two ends of the sleeve are wedged tightly on the wall of the hole. Therefore, when the bolt is loaded longitudinally, the larger the load, the greater the lateral thrust force of the casing on the hole wall. Because of rubber and