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A multi-point wall-attached three-dimensional mining stress monitoring device and method for the whole section of a deep borehole

A monitoring device, a technology for mining stress, applied in the direction of measuring devices, measuring forces, instruments, etc.

Active Publication Date: 2018-07-24
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Technical problem: The purpose of the present invention is to solve the problem of how to realize under the condition of deep drilling in the mining stress monitoring technology: the stress monitoring device is strongly coupled with the hole wall; multiple monitoring devices are coaxial with the drilling; rationally arrange multiple monitoring point segments issues such as the spatial location of

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  • A multi-point wall-attached three-dimensional mining stress monitoring device and method for the whole section of a deep borehole
  • A multi-point wall-attached three-dimensional mining stress monitoring device and method for the whole section of a deep borehole
  • A multi-point wall-attached three-dimensional mining stress monitoring device and method for the whole section of a deep borehole

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] see attached Figures 1 to 5 , a multi-point wall-mounted three-dimensional mining stress monitoring device for the whole section of deep drilling, including rigid connection straight casing 1, rigid connection rod 2, tail cone 6, orifice push valve 7, limit valve 14, and a plurality of Unit monitoring device.

[0030]The unit monitoring device includes a resin shell flap 4, a strain gauge 5, a reverse arc bottom V-shaped steel sheet groove 8, and a notch-reducing rigid sleeve 3; rigidly connecting a straight sleeve 1 and a notch-reducing rigid sleeve 3. The slidable sleeve is mounted on the rigid connecting rod 2. The thicker end of the notch-reducing rigid sleeve 3 is rigidly connected to the rigid connecting straight sleeve 1. The outer circumference of the thinner end is uniformly distributed with three resin shell flaps 4, which are in phase with...

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Abstract

The invention relates to a gun drilling full-segment multiple-point wall abutting type three-dimensional mining induced stress monitoring device and a gun drilling full-segment multiple-point wall abutting type three-dimensional mining induced stress monitoring method. At an early period, a stress spatial distribution characteristic of rock body affected by mining is simulated according to engineering actual values, monitoring point position segments are defined through dividing; and configuration of a plurality of monitoring point positions in gun drilling is guided. A strong coupling effect between a packaging member and wall of a drilling hole in gun drilling is realized. At each point position, resin housing segments radially move for clinging to the wall of the hole, and furthermore synchronization and coaxality are realized. Secondly, the resin housing segments cling to the wall of the hole, and an effect of colloid elastic modulus variation can be neglected, and furthermore an effect of cracking of solidified couplants such as cement at the presence of high stress can be prevented. The gun drilling full-segment multiple-point wall abutting type three-dimensional mining induced stress monitoring device and the gun drilling full-segment multiple-point wall abutting type three-dimensional mining induced stress monitoring method can accurately reflect the real-time distribution characteristic of the full-segment mining stress in gun drilling.

Description

technical field [0001] The invention relates to the technical field of monitoring three-dimensional mining stress, in particular to a multi-point wall-attached three-dimensional mining stress monitoring device and method for the entire section of a deep borehole. Background technique [0002] The deep coal mines in the high in-situ stress area are affected by mining, and are prone to rock burst disasters. Practice has proved that the stress distribution in the coal and rock mass is closely related to the occurrence of rock bursts. The larger the peak stress concentration, the easier it is to cause For rock burst disasters, it is of great significance to accurately and timely grasp the stress distribution state of the stress concentration area in the coal and rock body to prevent rock burst disasters. At present, the monitoring of in-situ stress or mining stress at home and abroad is mainly a single-point prediction mode, and the accuracy needs to be improved, and the detecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/00
CPCG01L1/00
Inventor 陆银龙张晓东王连国李兆霖肖天博
Owner CHINA UNIV OF MINING & TECH
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