| 高填方输煤暗道周边土压力试验研究 |
| |
| 引用本文： | 田建勃,陈凯,韩晓雷,史庆轩,徐生玉,郝旭.高填方输煤暗道周边土压力试验研究[J].岩土力学,2014,35(6):1679-1686. |
| |
| 作者姓名： | 田建勃 陈凯 韩晓雷 史庆轩 徐生玉 郝旭 |
| |
| 作者单位： | 1. 西安建筑科技大学 土木工程学院，西安 710055；2.中国有色金属工业西安勘察设计研究院，西安 710054； 3. 中国轻工业西安设计工程有限责任公司，西安710048 |
| |
| 基金项目： | 国家自然科学基金资助项目(No. 51078309，No. 51178380)。 |
| |
| 摘 要： | 高填方暗道在西部沟壑地区得到越来越广泛的应用，但有关高填方暗道周边土压力分布的计算尚不十分清楚，需要进一步研究。通过对山西平朔东露天煤矿输煤暗道周边土压力现场测试资料分析，得出了高填方输煤暗道周边土压力分布和变化规律，对暗道周边的应力状态有了更为清晰地了解。试验结果表明，高填方暗道结构顶部存在竖向土压力集中现象，高填方暗道侧部竖向土压力分布呈现如下规律：当填土高度较低时，土压力随填土高度增加较快；当填土高度较大时变化缓慢。高填方暗道竖向土压力计算时，当填土高度较低时，宜采用土柱法；填土高度较大时宜选用顾安全公式法。与暗道结构相比，公路桥涵与地下埋管尺寸和刚度较大，建议计算侧向土压力系数采用静止土压力系数。
|
| 关 键 词： | 高填方 土压力 土压力系数 现场测试 |
| 收稿时间： | 2013-03-14 |
Experimental research on circumjacent earth pressure on coal handling conduit under high earth-fill |
| |
| TIAN Jian-bo,CHEN Kai,HAN Xiao-lei,SHI Qing-xuan,XU Sheng-yu,HAO Xu.Experimental research on circumjacent earth pressure on coal handling conduit under high earth-fill[J].Rock and Soil Mechanics,2014,35(6):1679-1686. |
| |
| Authors: | TIAN Jian-bo CHEN Kai HAN Xiao-lei SHI Qing-xuan XU Sheng-yu HAO Xu |
| |
| Institution: | 1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; 2. Xi'an Engineering Investigation and Design Research Institute of China National Nonferrous Metals Industry, Xi'an 710054, China; 3. China Light Industry Xi'an Design Engineering Company Ltd., Xi'an 710048, China |
| |
| Abstract: | The conduits under high earth-fill have become more widely used in gully area in Western China; but the calculation of the circumjacent earth pressure on it is still not very clear. That needs further study. Based on the field tests on circumjacent earth pressure of the coal handling conduit in Shuozhou of Shanxi Province, the distribution and variation laws of the circumjacent earth pressures, stress state around the conduit are obtained. The test results show that there is a stress concentration for vertical earth pressure at the top of the coal conduit. The earth pressure increases faster when the filling height is lower; but the ratio of increase gets slower for the vertical earth pressure on the side of the conduit. The soil core method is preferably used when the filling height is lower; but the formula named ‘Gu Anquan’ is preferably applied to calculating the vertical earth pressure. Comparing culverts and underground penstock, the dimensions and rigidities of the high fill channels are larger, and using the coefficient of earth pressure at rest is recommended when calculating the coefficient of lateral earth pressure. |
| |
| Keywords: | high earth-fill earth pressure coefficient of earth pressure field test |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
