AN ABOVE GROUND AND UNDERGROUND COOPERATIVE CONTROL METHOD OF FAR AND NEAR FIELD ROOFS OF EXTRA-LARGE STOPING SPACE

摘要

Disclosed is an above ground and underground cooperative control method of far and near field roofs of an extra-large stoping space, and the method overcomes the problem of the current lack of method for comprehensively and cooperatively controlling a hard roof of far and near fields of an extra-large stoping space. The method comprises a hydraulic fracturing method via a vertical hole above ground, a hydraulic fracturing method via an L-shaped hole above ground, an above ground strong high-energy repetitive pulse shock wave method, an underground water injection method, an underground layered blasting method and an underground hydraulic fracturing method. The method has the following advantages: 1) the problem of the great mine pressure of an extra-large stoping space is effectively controlled by cooperatively controlling the hard roof of the near and far fields above ground and underground; 2) the advantages of a variety of methods are given full play and the disadvantages of the variety of methods are mutually compensated, such that the weakening effect on the hard roofs is substantially improved; and 3) holes drilled above ground and underground can be used independently or be used in a shared way, and thus the time, manpower, material resources and financial resources required for drilling the holes can be greatly reduced.