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Title:
AN ABOVE GROUND AND UNDERGROUND COOPERATIVE CONTROL METHOD OF FAR AND NEAR FIELD ROOFS OF EXTRA-LARGE STOPING SPACE
Document Type and Number:
WIPO Patent Application WO/2017/096674
Kind Code:
A1
Abstract:
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.

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Inventors:
YU BIN (CN)
YANG ZHIWEN (CN)
DUAN HONGFEI (CN)
MENG XIANGBIN (CN)
Application Number:
PCT/CN2016/000321
Publication Date:
June 15, 2017
Filing Date:
June 20, 2016
Export Citation:
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Assignee:
DATONG COAL MINE GROUP CO LTD (CN)
International Classes:
E21C41/16; E21C37/12
Foreign References:
CN105545307A2016-05-04
CN104790951A2015-07-22
CN104747232A2015-07-01
CN102562067A2012-07-11
CN103953343A2014-07-30
CN103498680A2014-01-08
CN102661689A2012-09-12
US4265570A1981-05-05
Attorney, Agent or Firm:
TAIYUAN KEWEI PATENT OFFICE (GENERAL PARTNER) (CN)
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