Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway
China is one of the leading countries in the mining and utilization of coal resources, and the problems of coal-mining technology and safety have been concerned by the world, while the serious deformation and destruction of surrounding rock and the difficulty of support have brought inconvenience to...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8866559 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849307059939442688 |
|---|---|
| author | Xiangye Wu Jingya Wang Wencai Wang Chen Tian Qingwei Bu Lin Wu |
| author_facet | Xiangye Wu Jingya Wang Wencai Wang Chen Tian Qingwei Bu Lin Wu |
| author_sort | Xiangye Wu |
| collection | DOAJ |
| description | China is one of the leading countries in the mining and utilization of coal resources, and the problems of coal-mining technology and safety have been concerned by the world, while the serious deformation and destruction of surrounding rock and the difficulty of support have brought inconvenience to the mining of coal resources due to repeated mining. This paper takes the actual engineering 22205 mining roadway in Buertai mine as the research background, through the combination of numerical simulation and field measurement. In this paper, the stress environment, plastic zone, and surrounding rock deformation in the advancing process of coal-mining face are studied, and the stress evolution law of surrounding rock in repeated mining roadway is obtained. It is clarified that the surrounding rock deformation is the failure mechanism under the combined action of principal stress difference and stress direction deflection. As a result, the surrounding rock of the roadway is asymmetrically deformed and destroyed, and the corresponding surrounding rock control scheme is put forward. The results show that the influence of repeated mining on roadway stress environment can be divided into four stages with the mining process: the stability stage of mining influence, the expansion stage of primary mining, the stable stage after primary mining, and the expansion stage of second mining. At the same time, the shape changes of the plastic zone and the displacement monitoring results of the monitoring are analyzed, and the results are obtained; the stage of stress change is suitable, and combined with the failure characteristics of surrounding rock in each stage, it is put forward that reinforcement measures should be taken in the stable stage after mining; the specific reinforcement scheme is determined according to the expansion form of plastic zone and field measurement. The on-site monitoring shows that there is no roof fall accident during the use of the roadway, which ensures the safety in production. |
| format | Article |
| id | doaj-art-202f20eb9d37483894fccb99fa02dba4 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-202f20eb9d37483894fccb99fa02dba42025-08-20T03:54:52ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88665598866559Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining RoadwayXiangye Wu0Jingya Wang1Wencai Wang2Chen Tian3Qingwei Bu4Lin Wu5Institute of Mining Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, ChinaInstitute of Mining Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, ChinaInstitute of Mining Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, ChinaBulianta Coal Mine, Shenhua Shendong Coal Group Corporation Limited, Ordos 017209, ChinaInstitute of Mining Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, ChinaInstitute of Mining Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, ChinaChina is one of the leading countries in the mining and utilization of coal resources, and the problems of coal-mining technology and safety have been concerned by the world, while the serious deformation and destruction of surrounding rock and the difficulty of support have brought inconvenience to the mining of coal resources due to repeated mining. This paper takes the actual engineering 22205 mining roadway in Buertai mine as the research background, through the combination of numerical simulation and field measurement. In this paper, the stress environment, plastic zone, and surrounding rock deformation in the advancing process of coal-mining face are studied, and the stress evolution law of surrounding rock in repeated mining roadway is obtained. It is clarified that the surrounding rock deformation is the failure mechanism under the combined action of principal stress difference and stress direction deflection. As a result, the surrounding rock of the roadway is asymmetrically deformed and destroyed, and the corresponding surrounding rock control scheme is put forward. The results show that the influence of repeated mining on roadway stress environment can be divided into four stages with the mining process: the stability stage of mining influence, the expansion stage of primary mining, the stable stage after primary mining, and the expansion stage of second mining. At the same time, the shape changes of the plastic zone and the displacement monitoring results of the monitoring are analyzed, and the results are obtained; the stage of stress change is suitable, and combined with the failure characteristics of surrounding rock in each stage, it is put forward that reinforcement measures should be taken in the stable stage after mining; the specific reinforcement scheme is determined according to the expansion form of plastic zone and field measurement. The on-site monitoring shows that there is no roof fall accident during the use of the roadway, which ensures the safety in production.http://dx.doi.org/10.1155/2020/8866559 |
| spellingShingle | Xiangye Wu Jingya Wang Wencai Wang Chen Tian Qingwei Bu Lin Wu Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway Advances in Civil Engineering |
| title | Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway |
| title_full | Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway |
| title_fullStr | Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway |
| title_full_unstemmed | Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway |
| title_short | Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway |
| title_sort | study on the stage failure mechanism and stability control of surrounding rock of repeated mining roadway |
| url | http://dx.doi.org/10.1155/2020/8866559 |
| work_keys_str_mv | AT xiangyewu studyonthestagefailuremechanismandstabilitycontrolofsurroundingrockofrepeatedminingroadway AT jingyawang studyonthestagefailuremechanismandstabilitycontrolofsurroundingrockofrepeatedminingroadway AT wencaiwang studyonthestagefailuremechanismandstabilitycontrolofsurroundingrockofrepeatedminingroadway AT chentian studyonthestagefailuremechanismandstabilitycontrolofsurroundingrockofrepeatedminingroadway AT qingweibu studyonthestagefailuremechanismandstabilitycontrolofsurroundingrockofrepeatedminingroadway AT linwu studyonthestagefailuremechanismandstabilitycontrolofsurroundingrockofrepeatedminingroadway |