大型真三维煤与瓦斯突出定量物理模拟试验系统研发  

A large-scale three-dimensional coal and gas outburst quantitative physical modeling system

作　　者：李术才[1] 李清川[1] 王汉鹏[1] 袁亮[1,2,3] 张玉强 薛俊华 张冰 王静[1] LI Shucai;LI Qingchuan;WANG Hanpeng;YUAN Liang;ZHANG Yuqiang;XUE Junhua;ZHANG Bing;WANG Jing(Research Centre of Geotechnical and Structural Engineering,Shandong University,Jinan 250061,China;School of Ming and Safety Engineering,Anhui University of Science and Technology,Huainan 232001,China;Huainan Mining（Group）Co.,Ltd.,State Key Laboratory of Deep Coal Mining ＆ Environ-ment Protection,Huainan 23200,China)

机构地区：[1]山东大学岩土与结构工程研究中心,山东济南250061 [2]安徽理工大学能源与安全学院,安徽淮南232001 [3]淮南矿业(集团)有限责任公司深部煤炭开采与环境保护国家重点实验室,安徽淮南232000

出　　处：《煤炭学报》2018年第B06期121-129,共9页Journal of China Coal Society

基　　金：国家重大科研仪器研制资助项目(51427804);国家重点研发计划资助项目(2016YFC0801402);山东自然科学基金资助项目(ZR201702180051)

摘　　要：采用物理模拟试验开展多种组合条件下煤与瓦斯突出定量化模拟是目前研究煤与瓦斯突出机理与规律的主要研究手段,以综合作用假说、CSIRO突出模型为理论依据,根据推导建立的煤与瓦斯突出相似准则,研发了可考虑不同地质条件、地应力、煤岩体强度、瓦斯压力和施工过程的大型真三维煤与瓦斯突出定量物理模拟试验系统;系统由模型反力与空间密封单元、高地应力梯度加载智能控制单元、大流量高压瓦斯气体充填加载单元、巷道微型掘进与高速记录单元和多元信息瞬态获取五大关键单元构成。可实现最大尺寸为1.5 m×1.5 m×3 m(长×宽×厚)的试验模型真三维梯度加载,系统最大加载能力60 MPa,模型厚度方向可按0.6 m倍数调节,系统最大充气压力3MPa,最大气体充填速度360 L/min,微型光纤光栅传感器最大采集频率500 k Hz,巷道最大掘进速度10 cm/min。各模块协同工作,可实现三维气固耦合条件下石门揭煤诱发煤与瓦斯突出试验模拟,为探索不同组合因素下煤与瓦斯突出发生条件,揭示突出机理提供了定量化模拟平台。Coal and gas outburst quantitative physical modeling under a variety of conditions has become the main method to reveal the mechanism of coal and gas outburst.Based on the CSIRO outburst model and combination theory hypothesis,according to similarity criterion,a large-scale true three-dimensional coal and gas outburst quantitative physical modeling system was developed,which can consider the possible combina-tions of geologic setting,geo-stress,coal density,gas pressure and construction process.The system consists of five key units： model counter-force apparatus and seal space unit,high geo-stress gradient loading and control unit,mass flow and high pressure gas filling unit,tunnel micro-TBM（ Tunnel Boring Machine） and high-speed recording unit,and multi-information instantaneous acquisition unit.The system with the maximum model size of 1.5 m×1.5 m×3 m（ long×width×thick） was developed,and the maximum loading capacity was 60 MPa,which could achieve the true 3 D gradient loading,the thickness direction ofmodel could be adjusted by a multiple of 0.6 m,and the maximum inflating pressure was 3 MPa.The maximum acquisition frequency of micro fiber grating sensor was 500 k Hz and the maximum excavation speed of laneway was 10 cm/min.The units work together to simulate the coal and gas outburst of rock cross-cut coal uncovering in the gas-solid coupling and three dimensional loading conditions,providing a quantitative simulation platform for researching the outburst occurrence conditions in different factor combinations and revealing the coal and gas outburst mechanism.

关 键 词：煤与瓦斯突出 定量化物理模拟 系统研发 气固耦合 智能掘进 

分 类 号：TD712[矿业工程—矿井通风与安全]