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Title:
THREE-ASPECT INTEGRATED MONITORING METHOD FOR STRATA CONTROL
Document Type and Number:
WIPO Patent Application WO/2019/000839
Kind Code:
A1
Abstract:
The present invention relates to the field of mining engineering. Provided is a monitoring method integrating three aspects of data relating to strata control, comprising: downhole pressure observation, in which a pressure monitoring device arranged in a goaf and a pressure sensor installed at a hydraulic support are used to perform a collection operation; overburden strata displacement observation, in which monitoring of data relating to a mining-induced fracture movement of overburden strata is performed on the basis of a location of a key stratum of the overburden strata by using a multipoint extensometer provided to measure internal strata displacement and disposed in a surface borehole in combination with a borehole TV system; and surface subsidence observation, in which measurement is performed by means of a GPS to obtain subsidence data. The method can be used to investigate a pattern of action and the degree of influence of fracture movements of respective key strata of the overburden strata on downhole pressure, thereby determining a location of a key stratum capable of generating a high pressure and potentially causing a disaster, and, based thereon, enable manual intervention with respect to the fracture of the key stratum, so as to realize science-based control of downhole pressure.

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Inventors:
XU JIALIN (CN)
LI ZHU (CN)
ZHU WEIBING (CN)
JU JINFENG (CN)
Application Number:
PCT/CN2017/114448
Publication Date:
January 03, 2019
Filing Date:
December 04, 2017
Export Citation:
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Assignee:
UNIV CHINA MINING (CN)
International Classes:
E21F17/18; E21B47/002; E21D15/46; G01C5/00
Foreign References:
CN106703888A2017-05-24
CN107165676A2017-09-15
CN105911606A2016-08-31
CN106093341A2016-11-09
CN106771066A2017-05-31
US20160177676A12016-06-23
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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