非金属矿
非金屬礦
비금속광
NON-METALLIC MINES
2015年
1期
42-44
,共3页
矿山固体废弃物%膏体充填材料%强度%坍落度%弹性模量
礦山固體廢棄物%膏體充填材料%彊度%坍落度%彈性模量
광산고체폐기물%고체충전재료%강도%담락도%탄성모량
mine’s solid waste%paste iflling material%strength%slump%electric modulus
为充分利用矿山固体废弃物进行深部膏体充填开采，以煤矸石、粉煤灰、尾砂和水泥为原料，制备高强度膏体充填材料，采用正交设计手段进行配合比设计，并采用坍落度实验和单轴压缩实验测试了不同配合比条件下膏体充填材料的坍落度、强度和弹性模量，基于实验数据进行了极差分析，探讨了质量分数、水胶比、砂率和粉煤灰用量对膏体充填材料性能的影响，确定了最优配合比。研究结果表明，采用煤矸石、尾砂、粉煤灰和水泥为原料，可以制备高强度满足深部开采要求的膏体充填材料，当质量分数为80%、水胶比为2、砂率为80%、粉煤灰用量为150 kg/m3时为最优配合比，此时坍落度为209 mm，28 d抗压强度为10.40 MPa,弹性模量为7.15 GPa，能够满足深部膏体充填开采的要求。
為充分利用礦山固體廢棄物進行深部膏體充填開採，以煤矸石、粉煤灰、尾砂和水泥為原料，製備高彊度膏體充填材料，採用正交設計手段進行配閤比設計，併採用坍落度實驗和單軸壓縮實驗測試瞭不同配閤比條件下膏體充填材料的坍落度、彊度和彈性模量，基于實驗數據進行瞭極差分析，探討瞭質量分數、水膠比、砂率和粉煤灰用量對膏體充填材料性能的影響，確定瞭最優配閤比。研究結果錶明，採用煤矸石、尾砂、粉煤灰和水泥為原料，可以製備高彊度滿足深部開採要求的膏體充填材料，噹質量分數為80%、水膠比為2、砂率為80%、粉煤灰用量為150 kg/m3時為最優配閤比，此時坍落度為209 mm，28 d抗壓彊度為10.40 MPa,彈性模量為7.15 GPa，能夠滿足深部膏體充填開採的要求。
위충분이용광산고체폐기물진행심부고체충전개채，이매안석、분매회、미사화수니위원료，제비고강도고체충전재료，채용정교설계수단진행배합비설계，병채용담락도실험화단축압축실험측시료불동배합비조건하고체충전재료적담락도、강도화탄성모량，기우실험수거진행료겁차분석，탐토료질량분수、수효비、사솔화분매회용량대고체충전재료성능적영향，학정료최우배합비。연구결과표명，채용매안석、미사、분매회화수니위원료，가이제비고강도만족심부개채요구적고체충전재료，당질량분수위80%、수효비위2、사솔위80%、분매회용량위150 kg/m3시위최우배합비，차시담락도위209 mm，28 d항압강도위10.40 MPa,탄성모량위7.15 GPa，능구만족심부고체충전개채적요구。
In order to implement the deep paste iflling mining based on the full use of mine’s solid waste, coal gangue, coal ash, tailings and cement are taken as raw materials to prepare high-strength paste iflling materials. Not only is the mix design conducted by orthogonal design means, but the slump experiment and uniaxial compression experiment are also performed to figure out the slump, strength and elastic modulus of paste iflling materials in different mix proportions. Based on the experimental data, energy has been devoted to carrying out a range analysis as well as an exploration on the inlfuence of mass concentration, water-binder ratio, sand ratio, and coal ash consumption over the performance of paste iflling materials to determine the optimal mix ratio. The ifndings reveal that coal gangue, coal ash, tailings, and cement can be used to prepare the high-strength paste iflling materials required by deep mining as the raw materials. As for the optimal mix proportion, the mass concentration, water-binder ratio, sand ratio, and coal ash consumption are 80%, 2, 80% and 150 kg/m3, respectively. In the presence of optimal mix proportion, the slump will be 209 mm; 28 d compressive strength be 10.40 MPa; and elastic modulus be 7.15 GPa. All these ifgures will help to meet the requirement for deep paste iflling mining.
