1 results about "Formation rate" patented technology

This invention discloses a method for determining the direction of the maximum horizontal principal stress based on borehole formation rate, relating to the field of mining engineering technology. The method includes: constructing a set of pressure-relief boreholes of the same diameter and target depth along a horizontal plane at a preset azimuth angle within the area to be measured; recording the actual drilling depth of each pressure-relief borehole based on its construction; calculating the formation rate of each pressure-relief borehole based on the actual drilling depth and target depth; and determining the direction of the maximum horizontal principal stress based on the distribution law of the formation rate. This invention clarifies the correlation between "drilling direction - formation rate - direction of the maximum horizontal principal stress," transforming common borehole formation obstacles in engineering into an effective way to acquire geological information. It achieves low-cost and high-efficiency acquisition of key geostress direction information without the need for additional specialized equipment and complex testing processes, providing a highly practical solution for rapid assessment and targeted engineering control of the geostress field in coal mines.