一种岩石磨蚀性实验

在TBM、盾构掘进过程中刀具磨损难以预测，一旦出现部分刀具磨损严重而未及时更换，则会影响整个刀盘刀具的寿命，将给施工工期和工程的经济效益带来严重的影响。为有效预测刀具磨损状况，从岩-机结合的角度出发，开展一种新的岩石磨蚀性实验方法研究。详细介绍该实验方法的原理、设备和具体操作方法及数据分析，并以广州地铁某施工项目为研究对象，通过岩石磨蚀性实验数据和现场刀具磨损数据的对比分析验证该实验研究方法的可靠性，并提供岩石磨蚀性指标参数来指导隧道工程的施工。

A New Rock Abrasiveness Test Method

It is difficult to predict the cutting tool wearing during TBM and shield tunneling. If the serious wearing of some cutting tools is not found and these worn cutting tools are not timely replaced, the service life of the full dress of the cutting tools and the cutter head may be affected, which may cause serious adverse effect on the construction schedule and the construction cost of the project. In the paper, study is made on a new rock abrasiveness test method, which is based on rock machine combination, so as to effectively predict the wearing of the cutting tools. The principle, equipment and operation method of the test are presented and the test results are analyzed. The test method is used for a project of Guangzhou Metro, and the results of the rock abrasiveness tests are compared to the cutting tool wearing data measured in the field, which verifies the reliability of the test and provides rock abrasiveness indices for the tunnel boring.