Abstract: The current hydraulic borehole drilling technique requires multiple lifting and lowering operations, resulting in coal seam fragmentation and vulnerable borehole collapse after penetration, preventing direct borehole reinforcement and making it difficult to fully insert the screen pipe after lifting, thus greatly affecting gas extraction efficiency.The integrated hydraulic borehole construction technique, incorporating drilling, punching, and borehole reinforcement, enables the screen pipe to be inserted without lifting after hydraulic punching, followed by hole sealing.This technique was field-tested in a certain mine's floor roadway.The results demonstrate that the integrated “drilling-punching-casing” technology resolves the challenge encountered in traditional borehole construction methods where the screen pipe fails to descend properly post-collapse.The construction drilling equipment exhibited stable performance during the construction process, simplifying existing operational protocols.Test results show that drilling efficiency increased by over 50%,operational efficiency improved by over 75%,economic costs were reduced by over 30%,thereby ensuring optimal gas extraction effectiveness in hydraulic borehole construction.