采矿与安全工程学报2017，Vol.34Issue(6)：1169-1173,1178,6.DOI:10.13545/j.cnki.jmse.2017.06.020
深部重塑黏土长时高压K0固结试验研究
Study on long-term and high pressure K0consolidation process of remodeling deep clay
摘要
Abstract
The coefficient of K0is a key factor to control the horizontal stress and affect the design and the safety analysis of underground structures. Due to the strong rheological properties of deep soils un-der high pressure, the consolidation stress and the time of consolidation affect the consolidation process and the K0significantly. In this paper, remolded clay samples taken from typical clay of Juye coal min-ing area have been tested under 8, 10, 12, 14, 16 MPa, respectively, and the consolidation time is dived into 1, 3, 7, 14, 28 days. By testing, the change of K0coefficient by the buried depth and consolidation history have been analyzed. The results show that the K0coefficient is an interval value instead of a constant one and varies with the consolidation history and stress level. The K0value of clay samples with shorter consolidation time is larger. With the consolidation time extended to 14 days, the K0value decrease rapidly and gradually stabilizes. When clay samples are consolidated for 28 days under the pressure of 8-16 MPa, the K0value is from 0.466 to 0.636.关键词
深部黏土/重塑土/长时/高压固结/K0值Key words
deep clay/rebuilt soil/long-term/high stress consolidation/K0value分类
矿业与冶金引用本文复制引用
王衍森,贾锦波,陈国庆,文凯..深部重塑黏土长时高压K0固结试验研究[J].采矿与安全工程学报,2017,34(6):1169-1173,1178,6.基金项目
国家重点研发计划项目(2016YFC0600903) （2016YFC0600903）
国家自然科学基金项目(51174194,51374199) （51174194,51374199）
