Before the construction of core drilling rigs, in fact, during the design documents, we must provide a supplement on the basis of all kinds of technical data, that is, we must directly carry out the exploration of engineering geology, and then we must further understand the nature of each construction site foundation soil and its burial conditions.This is our core drill before construction to determine an aspect.
Of course, the above is only one aspect, and there are many other aspects that we need to make clear before we carry out core drilling.Next, let's briefly introduce the requirements of these aspects.
Before a core-drilling rig is built, it is important to have sufficient cement, which is followed by reinforcement and water.For its cement varieties and specifications, there is the factory time, which is to go through the laboratory inspection, must meet our national standards and design requirements, and in its strict terms, it must be a quality certificate can.
When the core drilling machine is under construction, it must be prohibited to use expired and dampproof materials, as well as its tie plate and deteriorated reinforcement materials.Usually, we use cement, mostly 425 ordinary Portland cement.Make sure that the water is clean, that the pH is moderate, and that the pH is between 5 and 10.In addition, we must select the representative layers in the selected test site within the reinforcement scope according to the exploration data.
Before the construction of core drilling machine, it is necessary to do pile test.Finally, we should pay attention to the core drilling rig before construction, in accordance with the design requirements, directly complete the construction lofting, followed by the use of wooden piles directly on the pile position, and then, in other words, it is necessary to use white lime to make a clear mark on its direct.
