A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining
The broken pattern of the overburden strata induced by mining has a non-ignorable effect on overlying strata movement, failure, and safety in mining production. To study the caving pattern of overlying strata and determine the calculation method of fracture pathway parameters due to roof caving indu...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2017-04-01
|
Series: | Energies |
Subjects: | |
Online Access: | http://www.mdpi.com/1996-1073/10/4/476 |
id |
doaj-75f0192304d84b4696e10618f5cd644d |
---|---|
record_format |
Article |
spelling |
doaj-75f0192304d84b4696e10618f5cd644d2020-11-24T21:00:00ZengMDPI AGEnergies1996-10732017-04-0110447610.3390/en10040476en10040476A Novel Caving Model of Overburden Strata Movement Induced by Coal MiningDongjing Xu0Suping Peng1Shiyao Xiang2Yunlan He3State Key Laboratory of Coal Resource and Safe Mining, China University of Mining & Technology, Beijing 100083, ChinaState Key Laboratory of Coal Resource and Safe Mining, China University of Mining & Technology, Beijing 100083, China100083, ChinaState Key Laboratory of Coal Resource and Safe Mining, China University of Mining & Technology, Beijing 100083, ChinaThe broken pattern of the overburden strata induced by mining has a non-ignorable effect on overlying strata movement, failure, and safety in mining production. To study the caving pattern of overlying strata and determine the calculation method of fracture pathway parameters due to roof caving induced by coal mining, the trapezoidal broken models were developed to explain and prevent water leakage, and even water inrush, during the mining process. By incorporating the variation of the volume expansion coefficient, a connection among the parameters of the fracture pathways and fracture angles, face width, and mining height could be established, which shows that the larger the degree of the fracture angle is, the smaller the value of the volume expansion coefficient and face width is with a relatively larger mining height. This relationship was also used to determine the eventual evolution configuration of the trapezoidal broken model. The presented approaches may help us to better understand the movement of overburden strata and provide an idea to help settle conflicts related to fracture space calculations induced by coal mining.http://www.mdpi.com/1996-1073/10/4/476trapezoid broken modelfracture parameterslongwall mining |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dongjing Xu Suping Peng Shiyao Xiang Yunlan He |
spellingShingle |
Dongjing Xu Suping Peng Shiyao Xiang Yunlan He A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining Energies trapezoid broken model fracture parameters longwall mining |
author_facet |
Dongjing Xu Suping Peng Shiyao Xiang Yunlan He |
author_sort |
Dongjing Xu |
title |
A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining |
title_short |
A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining |
title_full |
A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining |
title_fullStr |
A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining |
title_full_unstemmed |
A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining |
title_sort |
novel caving model of overburden strata movement induced by coal mining |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2017-04-01 |
description |
The broken pattern of the overburden strata induced by mining has a non-ignorable effect on overlying strata movement, failure, and safety in mining production. To study the caving pattern of overlying strata and determine the calculation method of fracture pathway parameters due to roof caving induced by coal mining, the trapezoidal broken models were developed to explain and prevent water leakage, and even water inrush, during the mining process. By incorporating the variation of the volume expansion coefficient, a connection among the parameters of the fracture pathways and fracture angles, face width, and mining height could be established, which shows that the larger the degree of the fracture angle is, the smaller the value of the volume expansion coefficient and face width is with a relatively larger mining height. This relationship was also used to determine the eventual evolution configuration of the trapezoidal broken model. The presented approaches may help us to better understand the movement of overburden strata and provide an idea to help settle conflicts related to fracture space calculations induced by coal mining. |
topic |
trapezoid broken model fracture parameters longwall mining |
url |
http://www.mdpi.com/1996-1073/10/4/476 |
work_keys_str_mv |
AT dongjingxu anovelcavingmodelofoverburdenstratamovementinducedbycoalmining AT supingpeng anovelcavingmodelofoverburdenstratamovementinducedbycoalmining AT shiyaoxiang anovelcavingmodelofoverburdenstratamovementinducedbycoalmining AT yunlanhe anovelcavingmodelofoverburdenstratamovementinducedbycoalmining AT dongjingxu novelcavingmodelofoverburdenstratamovementinducedbycoalmining AT supingpeng novelcavingmodelofoverburdenstratamovementinducedbycoalmining AT shiyaoxiang novelcavingmodelofoverburdenstratamovementinducedbycoalmining AT yunlanhe novelcavingmodelofoverburdenstratamovementinducedbycoalmining |
_version_ |
1716780709685755904 |