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人们已经研究出一种新型锚杆支护系统——自钻孔锚杆。这是一种“一次性安装”锚杆,用之于地下工程的支护。以这种一次性安装锚杆为主,形成工作面快速锚杆支护系统。它能在连续掘进巷道期间减少维护顶板的时间。在实验室里对自钻孔锚杆和普通树脂锚杆进行了安装效率和锚固效果的测试,并将其结果进行了对比。测试结果表明,自钻孔锚杆安装简单、方便和快速,具有良好的承载能力。因此,自钻孔锚杆支护系统不仅安装时间节省,而且安装质量有保证。
People have developed a new type of bolt support system - self-drilling anchor. This is a “one-time installation ” bolt, used in underground engineering support. This one-time installation of anchor-based, the formation of face quick bolt support system. It reduces the time required to maintain the roof during continuous tunneling. In the laboratory on the self-drilling bolt and ordinary resin bolt installation efficiency and anchoring effect of the test, and the results were compared. The test results show that the self-drilling bolt installation is simple, convenient and fast, with good carrying capacity. Therefore, self-drilling anchor support system not only saves time and installation quality assurance.