The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium

The hydrophobicity of the aquifer at the bottom of the porous alluvium will affect the stability of the shaft. According to the changes of water level and the compressive amount of alluvium, we can evaluate the shaft stability and predict the shaft failure. In this work, the simulation model of the...

Full description

Saved in:
Bibliographic Details
Main Authors: Mingze Du, Yanchun Xu, Heng Duan, Wen Li
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2019/3090439
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1832550300891742208
author Mingze Du
Yanchun Xu
Heng Duan
Wen Li
author_facet Mingze Du
Yanchun Xu
Heng Duan
Wen Li
author_sort Mingze Du
collection DOAJ
description The hydrophobicity of the aquifer at the bottom of the porous alluvium will affect the stability of the shaft. According to the changes of water level and the compressive amount of alluvium, we can evaluate the shaft stability and predict the shaft failure. In this work, the simulation model of the auxiliary shaft in the Zhuxianzhuang Coal Mine is generated by using the Nsdc software to evaluate the stability of the shaft during drastic drawdown dewatering. Based on the measured hydrophobic compression ratio in an adjacent coal mine, the compressive amounts of the strata near the main and auxiliary shafts in the Zhuxianzhuang Coal Mine are predicted under the condition of drastic drawdown dewatering, which will be 249.69 mm and 302.75 mm, respectively. It is more likely that the shaft wall may fracture in the 15th day (fourth load level) under the condition of drastic drawdown dewatering. The formation compressive amount near the auxiliary shaft is approximately 320 mm, which is close to the measured predicted value. At the same time, the Fisher discriminant model is established, and it is predicted that the state of the main and auxiliary shafts will be failure under the conditions of drastic drawdown dewatering in the Zhuxianzhuang Coal Mine. Based on the simulating results, the technical means of using the ground grouting for early prevention and control is proposed.
format Article
id doaj-art-b6abc43337644b76adda71cdc998e570
institution Kabale University
issn 1070-9622
1875-9203
language English
publishDate 2019-01-01
publisher Wiley
record_format Article
series Shock and Vibration
spelling doaj-art-b6abc43337644b76adda71cdc998e5702025-02-03T06:07:09ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/30904393090439The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of AlluviumMingze Du0Yanchun Xu1Heng Duan2Wen Li3Mine Safety Technology Branch, China Coal Research Institute, Beijing 100013, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, ChinaMine Safety Technology Branch, China Coal Research Institute, Beijing 100013, ChinaThe hydrophobicity of the aquifer at the bottom of the porous alluvium will affect the stability of the shaft. According to the changes of water level and the compressive amount of alluvium, we can evaluate the shaft stability and predict the shaft failure. In this work, the simulation model of the auxiliary shaft in the Zhuxianzhuang Coal Mine is generated by using the Nsdc software to evaluate the stability of the shaft during drastic drawdown dewatering. Based on the measured hydrophobic compression ratio in an adjacent coal mine, the compressive amounts of the strata near the main and auxiliary shafts in the Zhuxianzhuang Coal Mine are predicted under the condition of drastic drawdown dewatering, which will be 249.69 mm and 302.75 mm, respectively. It is more likely that the shaft wall may fracture in the 15th day (fourth load level) under the condition of drastic drawdown dewatering. The formation compressive amount near the auxiliary shaft is approximately 320 mm, which is close to the measured predicted value. At the same time, the Fisher discriminant model is established, and it is predicted that the state of the main and auxiliary shafts will be failure under the conditions of drastic drawdown dewatering in the Zhuxianzhuang Coal Mine. Based on the simulating results, the technical means of using the ground grouting for early prevention and control is proposed.http://dx.doi.org/10.1155/2019/3090439
spellingShingle Mingze Du
Yanchun Xu
Heng Duan
Wen Li
The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium
Shock and Vibration
title The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium
title_full The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium
title_fullStr The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium
title_full_unstemmed The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium
title_short The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium
title_sort stability evaluation of shaft during drastic drawdown dewatering of alluvium
url http://dx.doi.org/10.1155/2019/3090439
work_keys_str_mv AT mingzedu thestabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium
AT yanchunxu thestabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium
AT hengduan thestabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium
AT wenli thestabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium
AT mingzedu stabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium
AT yanchunxu stabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium
AT hengduan stabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium
AT wenli stabilityevaluationofshaftduringdrasticdrawdowndewateringofalluvium