摘要
针对煤矿深井硬岩巷道掘进效率低下的技术难题,综合考虑深立井煤矿巷道工程环境和全断面掘进机技术特点,通过全断面掘进机施工煤矿深井岩巷可行性研究,制定了煤矿深井巷道全断面硬岩掘进机技术指标,研制了煤矿深井巷道全断面硬岩掘进机;基于考虑全断面掘进机施工扰动影响的岩石循环加卸载试验,建立了全断面掘进机快速施工围岩准静态循环加卸载损伤本构模型和非线性强度准则,并用于巷道围岩稳定性数值模拟中;通过数值模拟和现场监测,揭示了全断面掘进机快速施工围岩力学响应机理,提出了满足全断面掘进机快速施工煤矿硬岩巷道特点与要求的巷道支护形式和施工技术;通过分析煤矿全断面硬岩掘进机施工巷道围岩的稳定性,提出巷道顶板锚杆快速支护方案,并得到现场实测验证;针对立井井筒运输能力受限、井下工作环境空间狭小、设备需要频繁拆装转场等问题,研发了全断面岩石掘进机井下有限空间运输、组装、拆解技术,创新了全断面岩石掘进机井下始发、掘进关键技术;采用掘进、支护、排矸、辅助运输同步作业方式,解决了硬岩巷道快速施工难题。最后,通过在淮南张集煤矿西二采区1413A高抽巷进行工业性试验验证研究成果。结果表明:全断面掘进机施工煤矿深井硬岩巷道,平均月进尺达404 m,最高月进尺达560 m,为现有硬岩巷道掘进效率的5~10倍。
To overcome the problem of low penetration rate of hard rock roadways in deep-buried coal mine,the engineering environment of deep-buried coal mine roadways excavation and technical features of tunnel boring machines(TBMs)were comprehensively investigated.The technical index of deep-buried coal mine TBM was established through the feasibility researches of excavating deep-buried coal mine roadways by using TBMs,then the deep-buried coal mine TBM was developed.Based on some cyclic loading-unloading rock tests which con-sidering the disturbance of TBM excavation,the quasi-static cyclic loading-unloading damage constitutive model and non-linear failure criterion were established and introduced into the numerical simulation of roadway stability study.Through numerical simulation and site monitoring,the mechanical response mechanism of roadway sur-rounding rocks under TBM rapid excavation was revealed,and the roadway support pattern and technique which fulfill the requirements of TBM-excavated coal mine roadways were proposed and verified in site applications.To overcome the problems of restricts on the lifting capacity of vertical shaft,limited working space of underground working sites and frequent mobilization of equipment,the techniques of TBM transportation,assembly as well as disassembly in limited space were developed,and the key techniques of TBM launching and excavation were in-novated.The problem of hard rock rapid excavation was resolved by adapting synchronous operation of excavation,supporting,lashing and auxiliary transportation.Finally,the research results were verified by industrial tests which implemented in the overlying methane drainage roadway of 1413A longwall panel in Zhangji coal mine,Huainan,China.The test results indicated that in excavating deep-buried coal mine roadways by using TBMs,the average penetration rate reached up to 404 m/month and the highest penetration rate was 560 m/month,which is 5 to 10 times of current penetration rate of hard rock coal mine roadways.
作者
程桦
唐彬
唐永志
姚直书
王传兵
荣传新
CHENG Hua;TANG Bin;TANG Yongzhi;YAO Zhishu;WANG Chuanbing;RONG Chuanxin(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;Huainan Mining Industry (Group) Co.,Ltd.,Huainan 232001,China;Postdoctoral Research Station,Huainan Mining Industry (Group) Co.,Ltd.,Huainan 232001,China)
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2020年第9期3314-3324,共11页
Journal of China Coal Society
基金
国家自然科学基金资助项目(51804006)
中国博士后科学基金面上资助项目(2018M642503)。
