Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case Study

Automatic roadways on gob-side entry retaining with no-pillars are used for longwall mining technology. The mining technology with no-pillars can recover coal pillar resources and reduce the amount and cost of roadway excavations. Automatic roadway technology for cutting roofs by combined support on...

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Main Authors: Shengrong Xie, Xiaoyu Wu, Dongdong Chen, Yaohui Sun, Junchao Zeng, Qing Zhang, Chunwei Ji, Qiong Cheng, En Wang, Yuxin Ren
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Advances in Materials Science and Engineering
Online Access:http://dx.doi.org/10.1155/2019/8736103
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author Shengrong Xie
Xiaoyu Wu
Dongdong Chen
Yaohui Sun
Junchao Zeng
Qing Zhang
Chunwei Ji
Qiong Cheng
En Wang
Yuxin Ren
author_facet Shengrong Xie
Xiaoyu Wu
Dongdong Chen
Yaohui Sun
Junchao Zeng
Qing Zhang
Chunwei Ji
Qiong Cheng
En Wang
Yuxin Ren
author_sort Shengrong Xie
collection DOAJ
description Automatic roadways on gob-side entry retaining with no-pillars are used for longwall mining technology. The mining technology with no-pillars can recover coal pillar resources and reduce the amount and cost of roadway excavations. Automatic roadway technology for cutting roofs by combined support on gob-side entry retaining with no-pillars is adopted for the condition of thick immediate roof and medium-thick coal seam mining, cutting off the immediate roof and the main roof on the gob by combined support. The fractured roof forms gangue blocks to fill the gob and loads the overlying strata. The gangue control system is placed on the roadside, which controls the caving gangue to form a gangue rib. In this paper, the viewpoints and key technologies (the roof-cutting technology, the reinforcement and support technology, the gangue rib control technology, and the auxiliary support technology) of automatic roadway technology for cutting roofs by combined support on the gob-side entry retaining with no-pillars are introduced. Furthermore, the formation and control process are explained. The numerical simulation is used to simulate and analyze the roof hanging and the roof cutting structures. In addition, a field engineering test is performed. The field test shows that automatic roadway technology for cutting roofs by combined support on gob-side entry retaining with no-pillars is feasible. This process uses construction techniques and technologies to meet on-site production needs. The combined support has high resistance strength and is shrinkable. In engineering applications, the combined support has a low damage rate. The deformation of the automatic roadway with gob-side entry retaining is small, and the control effect is significant.
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institution Kabale University
issn 1687-8434
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language English
publishDate 2019-01-01
publisher Wiley
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series Advances in Materials Science and Engineering
spelling doaj-art-4f081223209d474c8bb031a040fde2762025-02-03T05:45:39ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/87361038736103Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case StudyShengrong Xie0Xiaoyu Wu1Dongdong Chen2Yaohui Sun3Junchao Zeng4Qing Zhang5Chunwei Ji6Qiong Cheng7En Wang8Yuxin Ren9School of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, ChinaAutomatic roadways on gob-side entry retaining with no-pillars are used for longwall mining technology. The mining technology with no-pillars can recover coal pillar resources and reduce the amount and cost of roadway excavations. Automatic roadway technology for cutting roofs by combined support on gob-side entry retaining with no-pillars is adopted for the condition of thick immediate roof and medium-thick coal seam mining, cutting off the immediate roof and the main roof on the gob by combined support. The fractured roof forms gangue blocks to fill the gob and loads the overlying strata. The gangue control system is placed on the roadside, which controls the caving gangue to form a gangue rib. In this paper, the viewpoints and key technologies (the roof-cutting technology, the reinforcement and support technology, the gangue rib control technology, and the auxiliary support technology) of automatic roadway technology for cutting roofs by combined support on the gob-side entry retaining with no-pillars are introduced. Furthermore, the formation and control process are explained. The numerical simulation is used to simulate and analyze the roof hanging and the roof cutting structures. In addition, a field engineering test is performed. The field test shows that automatic roadway technology for cutting roofs by combined support on gob-side entry retaining with no-pillars is feasible. This process uses construction techniques and technologies to meet on-site production needs. The combined support has high resistance strength and is shrinkable. In engineering applications, the combined support has a low damage rate. The deformation of the automatic roadway with gob-side entry retaining is small, and the control effect is significant.http://dx.doi.org/10.1155/2019/8736103
spellingShingle Shengrong Xie
Xiaoyu Wu
Dongdong Chen
Yaohui Sun
Junchao Zeng
Qing Zhang
Chunwei Ji
Qiong Cheng
En Wang
Yuxin Ren
Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case Study
Advances in Materials Science and Engineering
title Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case Study
title_full Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case Study
title_fullStr Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case Study
title_full_unstemmed Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case Study
title_short Automatic Roadway Backfilling of Caving Gangue for Cutting Roofs by Combined Support on Gob-Side Entry Retaining with No-Pillars: A Case Study
title_sort automatic roadway backfilling of caving gangue for cutting roofs by combined support on gob side entry retaining with no pillars a case study
url http://dx.doi.org/10.1155/2019/8736103
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