充填区透水环境对超高水材料充填体的影响研究  

Study on influence of permeable environment in filling area on performance of super-high water filling material

作　　者：郑瑞坚 熊祖强[1] 李西凡 ZHENG Ruijian;XIONG Zuqiang;LI Xifan(School of Energy and Science Engineering,Henan Polytechnic University,Juwzuo 454000,China;School of Resources and Civil Engineering,Northeastern University,Shenyang 110000,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454003 [2]东北大学资源与土木工程学院,辽宁沈阳110000

出　　处：《煤矿安全》2021年第10期64-69,共6页Safety in Coal Mines

摘　　要：为研究井下充填区域围岩透水环境对超高水材料充填体性能的影响,利用超高水材料(水灰比6∶1)制备的试样和能模拟不同围岩环境的超高水材料蠕变试验装置进行试验,试验采用分级加载的方式对超高水材料施加载荷,设计完全不透水和透水2种不同的围岩环境,研究不同载荷及透水环境下对超高水材料充填体性能的影响。结果表明:超高水材料固结体在受压后会析出一定量的自由水,在分级加载条件下超高水材料固结体变形量随围岩透水率的提高而不断增大;而在完全密闭条件下,析出的自由水会在密闭的缸体内形成一定的水压,水压反作用于固结体内部的自由水,导致自由水不能进一步析出,形成一种固液应力平衡状态,蠕变量极小,具有良好的不可压缩性。In order to study the impact of the permeable surrounding rock in the underground filling area on the performance of the super-high water material filling body, the use of super-high water material(water-cement ratio 6∶1) and creep test device which can simulate different surrounding rock environments were used to carry out the test. The test uses a graded loading method to impose loads on the super-high water material. Two different surrounding rock environments, completely impermeable and permeable, were designed to analyze the effects of different loads and permeable environments on the performance of super-high water materials. The results show that a certain amount of free water will separate out of the super-high water material consolidated body after being compressed, and the deformation of the super-high water material consolidated body will continue to increase with the increase of the water permeability of the surrounding rock under the condition of graded loading;under completely airtight conditions, the separated free water will form a certain water pressure in the closed cylinder, and the water pressure will react against the free water inside the consolidation body, causing the free water to not be further precipitated,forming a solid-liquid stress equilibrium state, so the creep is extremely small;it has good incompressibility.

关 键 词：超高水材料 分级加载 透水环境 充填体 蠕变 

分 类 号：TD823.7[矿业工程—煤矿开采]