贯通式空气反循环潜孔锤连续取心锤头改进与试验效果

Improvement of Run-through Air Reverse Circulation DTH Continuous Coring Hammer and the Test Effects

摘要:

贯通式空气反循环潜孔锤连续取心技术主要适用于干旱无水或缺水地区的地质钻探工作。为了了解该工艺的普遍适用性，在某大水矿区进行了一系列试验，通过对锤头和钻杆的局部改造，解决了钻探、取心、治水等一系列重大难题，为提高该工艺的普遍适用性和推广性提供了可靠的技术支撑。

Abstract:

Continuous coring technology by run-through air reverse circulation DTH hammer is mainly applied in the geological drilling in dry or water-deficient areas. In order to learn the universal applicability of this technology, a series of experiments were conducted in a water abundant mining area, by local transformation of the hammer and drill pipe, the major problems of drilling, coring and water control were solved.