条带法沉降分析的路基压矿开采方法
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摘要
针对"三下"压矿的开采问题,阐述了提高开采回采率的必要性和可行性。类比隧道巷道掘进应力分布特征,提出了简化的条带法和房柱法开采沉降计算公式;路基下压矿体因保守设计等原因造成资源浪费,建议当深厚比较大、辅以条带房柱法开采、矿层顶板力学性能较好时,可加大下压矿开采。淄博某黏土矿上存路基,压矿量大,采用条带法开采和垂直留设法设计,利用ABAQUS和FLAC~(3D)论证方案的合理性,验证了沉降计算公式。
According to the ore mining problem in the case of three pressure situation,the necessity and feasibility of improving mining recovery rate are expounded. By analogy to the tunnel drivage stress distribution characteristics,a simplified strip method and room-and-pillar method mining subsidence calculation formula are proposed.Because of the conservative design and some other reasons,a certain degree waste of resources are caused. When the depth is quite large and supplemented by banding room and pillar mining method as well as the mechanical properties of bed top is good,the exploit of pressed ore can be increased. The clay mine project in Zibo has a large roadbed pressure ore,the vertical setting method and the strip method mining plan is proposed. By means of ABAQUS and FLAC3 D,the rationality of the scheme is demonstrated,the settlement calculation formula is verified.
According to the ore mining problem in the case of three pressure situation,the necessity and feasibility of improving mining recovery rate are expounded. By analogy to the tunnel drivage stress distribution characteristics,a simplified strip method and room-and-pillar method mining subsidence calculation formula are proposed.Because of the conservative design and some other reasons,a certain degree waste of resources are caused. When the depth is quite large and supplemented by banding room and pillar mining method as well as the mechanical properties of bed top is good,the exploit of pressed ore can be increased. The clay mine project in Zibo has a large roadbed pressure ore,the vertical setting method and the strip method mining plan is proposed. By means of ABAQUS and FLAC3 D,the rationality of the scheme is demonstrated,the settlement calculation formula is verified.
引文
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3 张海波,李示波,张扬,等.金属矿山嗣后充填采场顶板合理跨度参数研究及建议.金属矿山,2014;(6):21—24Zhang Haibo,Li Shibo,Zhang Yang,et al.Research and suggestions on reasonable span parameters of the stope roof in metal mine with subsequent filling.Metal Mine,2014;(6):21—24
4 高明中,余忠林.煤矿开采沉陷预测的数值模拟.安徽理工大学学报(自然科学版),2003;(1):11—17Gao Mingzhong,Yu Zhonglin.Numerical simulation of the predication of surface subsidence behavior.Journal of Anhui University of Science and Technology(Natural Science),2003;(1):11—17
5 侯春来,吴爱祥,王贻明.高速公路下开采的地表沉降控制与预测.矿业研究与开发,2016;(5):23—27Hou Chunlai,Wu Aixiang,Wang Yiming.Control and prediction on surface subsidence for mining under highway.Mining Research and Development,2016;(5):23—27
6 唐又弛,曹再学,朱建军.有限元法在开采沉陷中的应用.辽宁工程技术大学学报,2003;(2):196—198Tang Youchi,Cao Zaixue,Zhu Jianjun.Application of ANSYS in the mining surface subsidence.Journal of Liaoning Technical University,2003;(2):196—198
7 袁灯平,马金荣,董正筑.利用ANSYS进行开采沉陷模拟分析.济南大学学报(自然科学版),2001;(4):336—338Yuan Dengping,Ma Jinrong,Dong Zhengzhu.Using ANSYS to analysis the law of mining.Journal of Jinan University(Science),2001;(4):336—338
8 中华人民共和国行业标准.采空区公路设计与施工技术细则:JTG/T D31-03—2011.北京:人民交通出版社,2011Industry Standard of the People's Republic of China.Guidelines for design and construction of highway engineering in the mined-out area:JTG/T D31-03—2011.Beijing:China Communications Press,2011
2 胡青峰.特厚煤层高效开采覆岩与地表移动规律及预测方法研究.北京:中国矿业大学,2011Hu Qingfeng.Overburden and surface movement due to high efficient mining extra-thick coal seam and prediction method.Beijing:China University of Mining and Technology,2011
3 张海波,李示波,张扬,等.金属矿山嗣后充填采场顶板合理跨度参数研究及建议.金属矿山,2014;(6):21—24Zhang Haibo,Li Shibo,Zhang Yang,et al.Research and suggestions on reasonable span parameters of the stope roof in metal mine with subsequent filling.Metal Mine,2014;(6):21—24
4 高明中,余忠林.煤矿开采沉陷预测的数值模拟.安徽理工大学学报(自然科学版),2003;(1):11—17Gao Mingzhong,Yu Zhonglin.Numerical simulation of the predication of surface subsidence behavior.Journal of Anhui University of Science and Technology(Natural Science),2003;(1):11—17
5 侯春来,吴爱祥,王贻明.高速公路下开采的地表沉降控制与预测.矿业研究与开发,2016;(5):23—27Hou Chunlai,Wu Aixiang,Wang Yiming.Control and prediction on surface subsidence for mining under highway.Mining Research and Development,2016;(5):23—27
6 唐又弛,曹再学,朱建军.有限元法在开采沉陷中的应用.辽宁工程技术大学学报,2003;(2):196—198Tang Youchi,Cao Zaixue,Zhu Jianjun.Application of ANSYS in the mining surface subsidence.Journal of Liaoning Technical University,2003;(2):196—198
7 袁灯平,马金荣,董正筑.利用ANSYS进行开采沉陷模拟分析.济南大学学报(自然科学版),2001;(4):336—338Yuan Dengping,Ma Jinrong,Dong Zhengzhu.Using ANSYS to analysis the law of mining.Journal of Jinan University(Science),2001;(4):336—338
8 中华人民共和国行业标准.采空区公路设计与施工技术细则:JTG/T D31-03—2011.北京:人民交通出版社,2011Industry Standard of the People's Republic of China.Guidelines for design and construction of highway engineering in the mined-out area:JTG/T D31-03—2011.Beijing:China Communications Press,2011