作为松软煤层钻进中护壁工艺配套工具,支护筛管不仅起到支护孔壁防止塌孔的作用,而且可以作为后期瓦斯抽采通道。研究筛管管身的筛孔分布情况和直径对筛管径向抗压特性的影响很有必要,分别对PVC筛管无孔、1孔、2孔进行拉伸试验、压缩试验、扭转实验来探讨支护筛管的管材力学特性。 As a soft coal seam drilling technology in supporting the wall supporting tools, support screen not only support the hole wall to prevent holes collapse role, but also can be used as a post-gas drainage channel. It is necessary to study the distribution of sieve holes and the diameter on the radial compressive properties of sieve tubes. Tensile tests, compression tests and torsion tests on PVC sieve tubes without holes, holes 1 and 2, respectively Discuss the pipe mechanical properties of support screen.