Geological Features of Kailuan Coal Mine and the Laws of Pressure Bump for Deep Mining

2011 ◽  
Vol 201-203 ◽  
pp. 408-412
Author(s):  
Lian Feng Gao ◽  
Ying Zhang ◽  
Yao Han Niu ◽  
Ying Chun Wang ◽  
Juan Sun ◽  
...  
Keyword(s):  
Coal Mine ◽  
High Stress ◽  
Mine Safety ◽  
Deep Mining ◽  
Geological Conditions ◽  
Key Factor ◽  
Pressure Bump ◽  
Safety Production ◽  
Permian Coal ◽  
The Impact

Pressure bump in coal mine production safety is a serious disaster. Geological conditions in Kailuan Mine are complex. Coal strata based on the Carboniferous - Permian coal. The roof and floor are made of sandstone and mudstone with poor rigidity. Fault development and mine have large amount of water inflow. Most of mine are already getting into the mining stage over one thousand meters deep. Increasing stress and high stress induced pressure bump as a key factor. In this paper, according to geological characteristics of Kailuan Coal, it analyzes the impact and the laws of pressure bump in the representation of deep mining phase, which have certain reference for coal mine safety production.

Behaviour Characteristics of Pressure Bump of Deep Mining in Kailuan Coal Mine and Micro Seismic Monitoring Technology

2011 ◽  
Vol 201-203 ◽  
pp. 404-407
Author(s):  
Ying Zhang ◽  
Lian Feng Gao ◽  
Shao Zhong Zhang ◽  
Juan Sun ◽  
Peng Zhang
Keyword(s):  
Real Time ◽  
Coal Mine ◽  
High Stress ◽  
Wall Rock ◽  
Seismic Monitoring ◽  
Deep Mining ◽  
Precise Position ◽  
Key Factor ◽  
Pressure Bump ◽  
Mining Face

Pressure bump is a serious disaster to threat coal mine production safety. The roof and floor strata in Kailuan coal mine are made of sandstone and mudstone with relatively poor rigidity. Most of mines have been into the deep mining stage over one thousand meters. High-stress becomes the key factor induced pressure bump. In this paper, according to coal mining strata, fault development, mine inflow and other geological factors, based on fracturing parameters of mine rock and wall rock in the pilot mines (Qianjiaying Mine, Tangshan Coal Mine), boundary conditions of the occurrence of pressure bump is tested by numerical simulation using RFPA software. It discusses the mechanism and laws of pressure bump under high stress in the deep mining. Mining face and roadway are taken real-time monitoring, using micro seismic monitoring system (MMS). The location and level of micro seismic events within the coal formation caused by breakdown could achieve precise position. Spatial distribution and characteristics of coal and rock bursting could be identified. The stability of coal and rock could be monitored real-time and analyzed. Pressure bump could be predicted and prevented effectively.

Development and Application of Complementary Support Technology under the Condition of Weak and Broken Surrounding Rocks

2011 ◽  
Vol 243-249 ◽  
pp. 3389-3398
Author(s):  
Hong Wei Wang ◽  
Yao Dong Jiang ◽  
Jie Zhu ◽  
Xian Tao Zeng ◽  
Peng Fei Jiang ◽  
...  
Keyword(s):  
Coal Mine ◽  
Rock Strength ◽  
High Stress ◽  
Surrounding Rock ◽  
Deep Mining ◽  
Induced Stress ◽  
Geological Conditions ◽  
Support Force ◽  
Support Element ◽  
Yielding Support

The support of surrounding rock under the condition of deep mining has significant challenges due to high stress and low rock strength environment. Using the method of strengthening broken rock, reinforcing support force and releasing the mine-induced stress, this study has pointed out the complementary support technology which is based on the support using bolt-wire-shotcrete and is combined with steel arched yielding support. For the purpose of permanent support, the complementary support technology could combine the each support element and adequately take advantage of load-caring capacity of surrounding rock. The monitoring data of Xiaokang coal mine, Muchengjian coal mine and Yangquhe coal mine indicate that, for the various geological conditions, complementary support system has provided powerful support force to resist large deformation of weak and broken surrounding rock. It is proved that this type of support technology could reduce the mine-induced stress as well and has economical significance.

The Rationality Analysis of Water-Intaking and Recession about the Integration of Hongfa Coal Mine

2013 ◽  
Vol 353-356 ◽  
pp. 2541-2544
Author(s):  
Chun Han ◽  
Zhen Wang
Keyword(s):  
Water Resources ◽  
Coal Mine ◽  
Mine Safety ◽  
Coal Resources ◽  
Coal Mine Safety ◽  
Safety Production ◽  
Development And Utilization ◽  
Local Water ◽  
The Impact ◽  
Regional Water

In order to make the coal exploitation to the healthy and sustainable development, the reasonable deployment of development of coal resources insist on shutting down before the integration, with the principle of the big merging into the small and the inferior merging into the superior. Coordinating to Hongfa coal mine and Luda coal mines In Ding Qi town. By integrating, it can achieve the goal of coal mine safety production and optimization of coal resources, and also can solve some problems left over by history. Through the analysis of local water resources development and utilization, we adopt the method of rainfall to inquire runoff volume and the frequency analysis to reason the results. The results show that either status quo of the level year or planning level years, Ma Daozi village gulley can completely meet the requirements of project for water, Water intake of water is reliable and the impact is not big to regional water resources.

Coal Seam Group Protection Layer Face Causes and Characteristics Analysis of Dynamic Phenomenon

2012 ◽  
Vol 550-553 ◽  
pp. 502-505
Author(s):  
Yong Jiang Zhang ◽  
Xian Zheng Meng ◽  
Zun Yu Xu
Keyword(s):  
Coal Seam ◽  
Coal Mine ◽  
Protective Layer ◽  
Test Area ◽  
Mine Safety ◽  
Dynamic Phenomenon ◽  
Geological Conditions ◽  
Characteristics Analysis ◽  
Safety Production ◽  
Mining Face

In Xinji Coal Mine under complicated geological conditions, regional faults. Experimental zone for near coal seam group mining(6-1,7-1,7-2,8 seam), The objective conditions with protective layer . The minefield of soft broken coal seam, Soft layered coal firmness coefficient f = 0.18. In the test area of 210601,210603 6-1seam protective layer mining face during the period, there were 8 abnormal gas dynamic phenomenon, To the coal mine safety production brought hidden trouble. On the basis of dynamic phenomenon occurring phenomenon, analysis of the dynamic phenomena, combined with the test area actual situation, summed up the6-1coal power causes, for guiding the 6-1safety mining and provide a theoretical basis, has important significance.

Analysis on Coal Mine Safety Status in China and its Countermeasures

2013 ◽  
Vol 448-453 ◽  
pp. 3814-3817 ◽  
Author(s):  
Chao Wang ◽  
Cheng Liang Zhang ◽  
Lei Liu
Keyword(s):  
Coal Mine ◽  
Safety Training ◽  
Coal Industry ◽  
Mine Safety ◽  
Training And Education ◽  
Coal Mine Safety ◽  
Geological Conditions ◽  
Safety Production ◽  
Prevention Method ◽  
Safety Investment

Aiming at actual situation of coal mine safety in China, the main problems in coal mine including geological conditions, scientific support and safety investment, shortage of technicians, safety training and education, and supervision laws were respectively analyzed, and the preventive countermeasures such as strengthening research of mechanism and prevention method of coal mine accidents, increasing safety investment, improving safety training and education, closing or integrating unqualified small coal mines, strengthening safety production supervision and perfecting legal system should be adopted to improve safety status of China coal industry.

Development and Application of the Coal Mine Safety Production System Based on GIS

2012 ◽  
Vol 14 (4) ◽  
pp. 454-459
Author(s):  
Xiaobo XU ◽  
Hualing WU ◽  
Jianqiang WANG ◽  
Shengping WANG
Keyword(s):  
Coal Mine ◽  
Production System ◽  
Mine Safety ◽  
Coal Mine Safety ◽  
Safety Production

Hardware Design of Coal Mine Safety Monitoring System Based on WSN

2012 ◽  
Vol 546-547 ◽  
pp. 1483-1488
Author(s):  
Shu Ren Han ◽  
Jun Wang ◽  
Ling Liang ◽  
Xian Peng Liu
Keyword(s):  
Monitoring System ◽  
Coal Mine ◽  
Hardware Design ◽  
Mine Safety ◽  
Sink Node ◽  
Function Structure ◽  
Gas Concentration ◽  
Coal Mine Safety ◽  
Safety Monitoring System ◽  
Safety Production

In the safety production of coal mine, monitoring exact and real-time mine parameter is very important and key problem. The monitoring system of mine environment with wireless is designed, which is based on the structure of wireless sensor network (WSN).The system includes sensor node, Sink node and monitoring center. In the paper, the function structure and hardware design of sensor are introduced for the monitoring of temperature, humidity and gas concentration, and the function structure and hardware design of sink node is designed. The system has low power, rapid real-timing, stable running. Etc. This can satisfy with the requirement of WSN and suit the monitoring of bad environments. It will have wide application prospect.

scholarly journals Stress Distribution Around Mechanized Longwall Face at Deep Mining in Quang Ninh Underground Coal Mine

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Manh Tung BUI ◽  
Tien Dung LE ◽  
Trong Hung VO
Keyword(s):  
Stress Distribution ◽  
Sea Level ◽  
Coal Mine ◽  
Coal Mines ◽  
Longwall Face ◽  
Geological Condition ◽  
Deep Mining ◽  
Roof Fall ◽  
The Impact ◽  
Quang Ninh

Quang Ninh underground coal mines are currently in the phase of finishing up the mineralreserves located near the surface. Also, in this phase, a number of coal mines have opened and preparednew mine sites for the extraction of the reserves at greater depth. Several mines have mined at -350 mdepth and are driving opening excavations at -500 m depth below sea level. The mining at greater depthfaces many difficulties, such as a significant increase in support and excavation pressures. The longwallface pressure is mostly manifested in great magnitude that causes support overloaded and jumped andface spall/roof fall. This paper, based on the geological condition of the Seam 11 Ha Lam coal mine,uses the numerical program UDEC for studying the impact of mining depth on stress distribution aroundthe longwall face. The results show that the deeper the mining is, the greater the plastic deformationzone is. The peak front abutment stress moves closer to the coal wall, mainly concentrating on theimmediate roof and top coal. The top coal is greatly broken, and its bearing capacity is decreased. Somesolutions to the stability of roof strata are proposed, and a proper working resistance of support isdetermined. Additionally, the paper suggests that the starting depth for deep mining in Quang Ninhunderground coal mines should be -350 m below sea level.

Risk assessment of coal mine safety production management activities based on FMEA-BN

2021 ◽  
pp. 1-14
Author(s):  
Xiaochuan Wang ◽  
Huixian Wang
Keyword(s):  
Risk Assessment ◽  
Coal Mine ◽  
Production Management ◽  
Assessment Model ◽  
Mine Safety ◽  
Risk Level ◽  
Layer By Layer ◽  
Effect Analysis ◽  
Coal Mine Safety ◽  
Safety Production

At present, the situation of coal mine safety production is still grim. The key to solve the problem is to analyze the risk of management activities in the process of coal mine safety production. This paper takes the management activities in the process of coal mine safety production as the research object. Firstly, according to the coal mine safety production standardization management system, the safety production management activities are carried out layer by layer. Then, the Failure Mode and Effect Analysis (FMEA) is used to identify the human errors that lead to the failure of management activities at all levels of coal mine. Furthermore, the Fuzzy Set Theory is used to determine the evaluation results of experts on the risk level of coal mine safety production management activities. Combined with Bayesian network (BN), the risk assessment model of coal mine safety production management activities is established. Through the model, the risk probability of coal mine enterprise management activities is accurately calculated. According to the evaluation results, the risk of management activities in coal mine safety production is analyzed.

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