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全锚固型锚杆多为砂浆锚固型和树脂型。虽然注浆式锚杆在原理上有优越性,但由于注浆装置、锚杆孔口的密封方法以及施工等方面存在的问题,在国内和国外都还有些未能很好解决。为此,笔者在这方面作了些研究。这种锚杆的优点是:即使是深孔也能简便地施工;浆液充填程度可由排气管返回的浆液来判定;布质止浆塞能起防止浆液倒流的作用;根据需要,浆液可速凝,能在短时间内得到高拉拔强度。由于有这些优点,故适用范围广,在日本已使用了5万根。
The anchorage anchors are mostly mortar anchors and resins. Although the grouting bolt is superior in principle, due to the problems in the grouting equipment, sealing method of the bolt hole, and construction, there are still some problems that cannot be solved at home and abroad. For this reason, the author made some research in this regard. The advantage of this kind of anchor is that even deep holes can be easily constructed; the degree of slurry filling can be judged by the slurry returned from the exhaust pipe; the cloth stop plug can prevent the backflow of the slurry; if necessary, the slurry can be accelerated. Condensation can give high pull-out strength in a short time. Because of these advantages, it has a wide range of applications and has used 50,000 in Japan.