采矿与安全工程学报2017，Vol.34Issue(2)：330-335,6.DOI:10.13545/j.cnki.jmse.2017.02.019
覆岩组合结构下导水裂隙带演化规律与发育高度分析
Evolution rule and development height of permeable fractured zone under combined-strata structure
摘要
Abstract
According to the correlation between the developing rule and strata structure of the permea-ble fractured zone and its movement feature, this paper proposed a new method to predict the develop-ment height of the permeable fractured zone based on the overburden combined strata structure and ten-sile deformation calculation. The results have shown that the permeable fractured zone should develop upward ladder-likely with units of strata groups made up by lower hard rock stratum and upper soft strata; through theoretical analysis, the tensile ratio of middle layer of stratum was proposed to estimate the subsidence, deformation and the development degree of cracks in each strata group. The height of permeable fractured zone can be predicted accurately after the accurate analysis of the development de-gree of the cracks in the strata group through spotting the inflection point of lower hard stratum's tensile ratio curve; based on the calculation of strata group subsidence and the factor of stratum bulking coefficient, the reasonable formula of tensile ratio of middle layer of stratum was formed. The result predicted by this method was consistent with the field observation.关键词
导水裂隙带/覆岩运动/组合结构/拉伸变形/裂隙发育Key words
permeable fractured zone/overburden strata movement/combined strata structure/tensile deformation/fracture development分类
矿业与冶金引用本文复制引用
黄万朋,高延法,王波,刘济仁..覆岩组合结构下导水裂隙带演化规律与发育高度分析[J].采矿与安全工程学报,2017,34(2):330-335,6.基金项目
国家自然科学基金项目(51304127,51404105) （51304127,51404105）
