(1. 北華航天工業(yè)學(xué)院 建筑工程學(xué)院，廊坊 065000；
2. 北京科技大學(xué) 膏體充填采礦技術(shù)研究中心，北京 100083；
3. 山東能源臨沂礦業(yè)集團(tuán)有限責(zé)任公司 會寶嶺鐵礦，臨沂 277700)
摘 要: 為了預(yù)防分段膠結(jié)充填過程中非膠結(jié)充填體頂水高度過大導(dǎo)致充填擋墻破壞而發(fā)生跑漿事故，在滿足一定假設(shè)條件和必要前提的基礎(chǔ)上，建立非膠結(jié)充填體頂水高度力學(xué)模型，并進(jìn)行理論求解。以某鐵礦充填采場為工程分析實(shí)例，采用控制變量法(CVM)研究非膠結(jié)充填體頂水高度隨充填沉降比和充填擋墻承受荷載的變化規(guī)律。結(jié)果表明：在充填擋墻承受荷載一定的前提下，非膠結(jié)充填體頂水高度隨著充填沉降比的增大而不斷增大，呈二次多項(xiàng)式關(guān)系；在充填沉降比一定的前提下，非膠結(jié)充填體頂水高度隨著充填擋墻承受荷載的增大而不斷增大，呈線性關(guān)系。最終得到某鐵礦充填采場非膠結(jié)充填體安全頂水高度值為2 m，與工程實(shí)測結(jié)果相同，研究具有一定的工程實(shí)用意義。
關(guān)鍵字: 非膠結(jié)充填體；頂水高度；充填擋墻；力學(xué)模型
（1. College of Architectural Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China;
2. Research Center of Paste Backfill and Mining, University of Science and Technology Beijing, Beijing 100083,China;
3. Huibaoling Iron Mine, Linyi, Shandong Energy Mining Croup Co., Ltd., Linyi 277700, China）
Abstract:To prevent the height of non-cemented filling top water in sublevel stoping with cemented filling being too large to cause slurry overflowing and damage the filling blocking wall, the paper established a mechanical model of non-cemented filling top water height in sublevel stoping with cemented filling and solves it by using theory based on the assumption of elasticity. Taking iron ore for project, the paper applies CVM to study the variation of filling blocking wall carrying load under the conditions of different filling settlement ratio and top water height in whole tailings non cemented filling. The results show that under the premise of certain filling blocking wall height, filling slurry density and top water height, the bearing load of filling blocking wall increases with increase of the filling settlement ratio which is expressed by a quadratic polynomial equation. And under the premise of certain filling settlement ratio, the bearing load increases with the increasing of top water height which is expressed by a linear relationship. The terminal safety top water height of whole tailings non-cemented filling is 2 m in iron ore, which is the same with the result of engineering detection, and the research has some engineering practical significance.
Key words: non cemented filling; water head height; filling blocking wall; mechanical model
