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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.

Inventors:
YU, Bin (Xinpingwang, Datong, Shanxi 3, 037003, CN)
YANG, Zhiwen (Xinpingwang, Datong, Shanxi 3, 037003, CN)
DUAN, Hongfei (Xinpingwang, Datong, Shanxi 3, 037003, CN)
MENG, Xiangbin (Xinpingwang, Datong, Shanxi 3, 037003, CN)
Application Number:
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 (Xinpingwang, Datong, Shanxi 3, 037003, 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) (1 Building, 4 layer 0402-1No.38 Shuangtasi Street, Yingze Distric, Taiyuan Shanxi 2, 030012, CN)
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