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浅谈井巷的维护方式 被引量:1
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作者 吴连军 《山西焦煤科技》 2009年第12期5-7,11,共4页
介绍了井巷压力性质及产生原因,并根据具体情况分析了影响井巷稳定性的主要因素:围岩的性质、巷道位置、巷道轴线方向、断面尺寸、掘进破岩方法、掘进时间与沿空护巷、掘进方案。论述了棚式支护、拱碹支护、锚喷支护及锚杆、挂网、锚索... 介绍了井巷压力性质及产生原因,并根据具体情况分析了影响井巷稳定性的主要因素:围岩的性质、巷道位置、巷道轴线方向、断面尺寸、掘进破岩方法、掘进时间与沿空护巷、掘进方案。论述了棚式支护、拱碹支护、锚喷支护及锚杆、挂网、锚索、喷浆联合支护。并举例说明锚杆、挂网、锚索、喷浆联合支护的综合应用。 展开更多
关键词 井巷压力 井巷稳定性 因素 井巷维护 联合支护 应用 效果
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Simulation and analysis of airflow stability during fire in mine belt roadway 被引量:3
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作者 ZHANG Sheng-zhu CHENG Wei-min +2 位作者 LI Qiu-jin ZHANG Rui LUO Chuan-Iong 《Journal of Coal Science & Engineering(China)》 2010年第4期375-380,共6页
According to fluid dynamics analysis during the fire, the criteria k-ε two-equation model for solving three-dimensional turbulence was determined, the pollutants generated in the fire disaster were set by adopting Mi... According to fluid dynamics analysis during the fire, the criteria k-ε two-equation model for solving three-dimensional turbulence was determined, the pollutants generated in the fire disaster were set by adopting Mixture multiphase flow, and the SIMPLE algorithm was used for solving on the basis of comprehensive consideration on the heat radia- tion and components transmission during fire. By simulating the airflow flowing state inside the tunnel during fire disaster of downward ventilation, drift ventilation, and ascensional ventilation, respectively, with regard to the actual situation of No.l, No.3, and No.5 belt roadway in Kongzhuang Coal Mine, the velocity vector distributions of pollutants under different inlet air volumes were obtained, and the damage degree and influential factors of disaster were also clear, which is helpful to control and avoid disaster during belt roadway fire. 展开更多
关键词 belt roadway disaster airflow STABILITY numerical simulation
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THEORETICAL ANALYSIS OF THE STABILITY OF A DEEP ROADWAY 被引量:1
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作者 付国彬 《Journal of China University of Mining and Technology》 1995年第1期58-65,共8页
In this paper the thickness of a broken zone, a state parameter of roadway surrounding rock, is used as the index to evaluate the stabi1ity of surrounding rock of a deep roadway. The paper gives a theoretic formula fo... In this paper the thickness of a broken zone, a state parameter of roadway surrounding rock, is used as the index to evaluate the stabi1ity of surrounding rock of a deep roadway. The paper gives a theoretic formula for calculating the thickness of the broken zone. The author points out that not only the ultimate strength of rockmass but its residual strength and strain-softening level all have a great influence on the stability of surrounding rock of a deep roadway. The paper’s results show that to reinforce surrounding rock, raise its residual strength and lower its strain-softening level should be taken as a basic requirement for supports of a deep roadway. In addition, the research also indicates that it is impossible for roadway supports to change surrounding rock states of a deep roadway, so it is certain for them to work in a broken state. For this reason, a sufficient yieldable quantity is necessary for roadway supports used in deep mining. 展开更多
关键词 deep mining roadway stability broken-zone thickness
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APPLICATION OF INTEGRATED INTELLIGENT METHODOLOGY TO PREDICT STABILITY AND SUPPORTING DECISION IN UNDERGROUND DRIFT 被引量:2
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作者 来兴平 伍永平 +1 位作者 张冰川 蔡美峰 《Journal of Coal Science & Engineering(China)》 2000年第1期40-44,共5页
The present study shows that naturally the enormous engineering structure interaction with medium material, geometry or non linearity hazardous simulation experiment, response analysis and computing theory have been r... The present study shows that naturally the enormous engineering structure interaction with medium material, geometry or non linearity hazardous simulation experiment, response analysis and computing theory have been regarded as a high level question in the architecture, bridge, tunnel, hydraulic, etc engineering fields.Approaches an integrated intelligent methodology to predict stability and supporting decision in underground drift based on neural network modelling on coal rock mechanical problem is proposed.By the terms of the non linearity numerical simulation, this paper develops integrated intelligent methodology to research on the structure hazardous response strata soft rock drifts. 展开更多
关键词 integrated intelligent methodology neural network numerical simulation
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