深孔挤压抛渣掏槽爆破法在采区煤仓施工中的应用

由于采区煤仓传统施工方法存在许多问题 ,在此介绍了深孔挤压抛渣掏槽爆破法在古汉山矿采区煤仓施工中的应用 .通过总结古汉山矿煤仓施工经验 ,提出了深孔挤压抛渣掏槽爆破法及相关的掏槽参数、爆破参数和安全技术措施 ,为类似工程的施工提供了宝贵经验     

柴里煤矿留设12m煤柱的开采上限研究

通过水文地质分析,对留设12m煤岩柱条件下的开采上限进行了研究。通过采取一定的安全技术措施,取得了试采成功,采出煤量4.3×105t,经济效益明显。     

显德旺井田山西组可采煤层厚度变化及其原因分析

本文运用传统方法和数学地质方法系统地分析了显德旺井田山西组可采煤层厚度变化规律及煤厚变化原因,为矿井生产提供了地质依据。     

老矿井采区供电电压提高方案

老矿井采区供电电压不稳常会造成设备起动困难甚至不能起动,有时还会发生运行中的设备启动装置欠电压跳闸,严重威胁矿井安全.本文采用建设升压站提高采区供电电压,成功地解决了老矿井采区变电所电压偏低的问题,稳定了电压,大大提高了供电质量,保证了设备的正常起动和运转,为安全生产提供了强有力的保障.     

老矿井采区供电电压提高方案

老矿井采区供电电压不稳常会造成设备起动困难甚至不能起动,有时还会发生运行中的设备启动装置欠电压跳闸,严重威胁矿井安全.本文采用建设升压站提高采区供电电压,成功地解决了老矿井采区变电所电压偏低的问题,稳定了电压,大大提高了供电质量,保证了设备的正常起动和运转,为安全生产提供了强有力的保障.     

淮南谢二矿煤的后生破碎与煤的显微组分关系研究

本文以淮南谢二矿为例，对煤的后生破碎与煤的显极组分之间的关系进行了研究，研究表明：①煤的物质组分是影响煤后生破碎的内在因素；②物质组分含量变化大的煤层，其后生破碎程度一般较高；③构造煤的形成与物质络分有关；均质镜质体会量高、基质镜质体含量低的煤易于破碎。     

Propagating Characteristic of Premixed Methane-Oxygen Deflagration in the Coal Mine Lane Including a Refuge Chamber

In order to investigate detonation propagation and distribution problems of premixed CH4+2O2 mixture around a concrete structure such as a refuge chamber,detonation experiments in one small size tube were conducted.A simulation method was developed to obtain the flow field load distribution in the coal mine lane and pressure load of each part for the refuge chamber.Firstly,a physical model of a full-size explosion-test lane was established,which included the refuge chamber.With the calculations of the exact initial detonation pressure,the propagation characteristics of CH4+2O2 premixed mixture detonation in the lane was simulated.Simulation results of various parts from AUTODYN are recorded,and the shock wave arrival time and the pressure peak can be observed from the detonation pressure-time curve over the changing propagation distance.So curve differences in different locations cannot be ignored.Then by detonation experiments in the small size tube,detonation pressure-time curves and velocity were obtained.Finally the simulation waveform of variation curve agreed well with the experimental results,which validated the detonation simulation method.The difference between shockwaves of the two sensors confirmed that detonation wave changed along with distance and time.These results should be taken into serious consideration for the detonation progration and distribution problem in future researches.     

兖州矿区放顶煤开采覆岩破坏规律探测研究

在利用井下仰孔探测技术探测了三个矿井放顶煤开采覆岩破坏高度的基础上， 总结分析了导水裂隙带的形态特征及其最大高度发育过程， 所得结论对于进一步研究放顶煤开采覆岩破坏规律及安全生产具有重要的参考与实用价值．     

高压喷射注浆造防渗墙法在防洪工程中的应用

以景德镇城市防洪工程为例，对各种防渗方案进行了比较，阐述了高压喷射注浆造墙法适用的地质条件，以及控制工程施工质量的措施。