New method of monitoring the transmission range of coal seam water injection and correcting the monitoring results

被引：26

作者：

Chen, Jian ^{[1
,2
]}

Cheng, Weimin ^{[1
]}

Wang, Gang ^{[1
]}

Li, Haomiao ^{[3
]}

Li, Yanyan ^{[4
]}

机构：

[1] Shandong Univ Sci & Technol, Mine Disaster Prevent & Control Minist, State Key Lab Breeding Base, Qingdao 266590, Peoples R China

[2] Univ Regina, Fac Engn & Appl Sci, 3737 Wascana Pkwy, Regina, SK, Canada

[3] Huazhong Agr Univ, Coll Engn, Wuhan, Hubei, Peoples R China

[4] Chinese Acad Geol Sci, Beijing 100037, Peoples R China

来源：

MEASUREMENT | 2021年 / 177卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Acoustic emission array monitoring technology; CT scan reconstruction; Fracture; P-wave; Water transmission range monitoring; Correction algorithm; ACOUSTIC-EMISSION; PERMEABILITY EVOLUTION; FRACTURING PROCESS; NMR; DEFORMATION; DRAINAGE; SAMPLE; MODEL;

D O I：

10.1016/j.measurement.2021.109334

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study proposes a new experimental method of monitoring the transmission range of coal seam water injection on the basis of acoustic emission array monitoring technology. Through theoretical analysis and experimental verification, data on the characteristic signs that can confirm the water transmission to the monitoring path were found. In accordance with these data, the water transmission contour was enveloped. Subsequently, the water transmission's calculated distance, and fracture space parameters which were reconstructed by computed tomography (CT) scanning, were used to modify the control points of the water transmission contour. Results were compared with experimental slices to confirm the feasibility and correctness of the proposed monitoring technology. Furthermore, the threshold range of the wave parameter change when the water touches the monitoring path was determined in accordance with the range of the wave parameter change monitored in the effective monitoring path.

引用

页数：16

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