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| 风沙土机械组成、容重和孔隙度对采煤塌陷的响应 | |
| 引用本文： | 王健,武飞,高永,贺晓,张勇,严喜斌,方彪.风沙土机械组成、容重和孔隙度对采煤塌陷的响应[J].内蒙古农业大学学报(自然科学版),2006,27(4):37-41. |
| 作者姓名： | 王健 武飞 高永 贺晓 张勇 严喜斌 方彪 |
| 作者单位： | 1. 内蒙古农业大学生态环境学院,呼和浩特,010019 2. 内蒙古师范大学,呼和浩特,010010 3. 锡林郭勒盟林业调查设计队,锡林浩特,026000 4. 鄂尔多斯市林业治沙科学研究所,鄂尔多斯,017000 5. 内蒙古自治区水土保持监测站,呼和浩特,010020 |
| 基金项目： | 神华集团公司资助项目;国家科技攻关计划;内蒙古自然科学基金 |
| 摘 要： | 通过测定和计算毛乌素沙地东南缘补连塔煤矿塌陷区和非塌陷区风沙土机械组成、容重、孔隙度,应用空间对比法研究采煤塌陷对风沙土物理性质的影响。试验结果表明:与非塌陷区相比,塌陷区物理性粘粒含量明显减少(P<0.05),尤其地表10 cm土层最为显著;与非塌陷区相比,塌陷区风沙土容重、孔隙度在不同坡位有明显差异,其中沙丘顶部和中部容重和孔隙度变化不明显(P=0.1),而沙丘底部和丘间低地容重明显减小,孔隙度明显增大(P<0.05);从垂直剖面上看,0 cm~40 cm层容重和孔隙度无明显变化(P=0.1),40 cm~100 cm层容重明显变小,孔隙度明显增大(P<0.05);裂缝密度对风沙土容重、孔隙度的影响不明显;在采空区边界,陷落幅度对风沙土容重影响较小,在采空区内部随着陷落幅度的增大,低位陷落体容重有随机减小趋势。 |
| 关 键 词： | 采煤塌陷 风沙区 机械组成 容重 孔隙度 |
| 文章编号： | 1009-3575(2006)04-0037-05 |
| 收稿时间： | 2006-05-29 |
| 修稿时间： | 2006年5月29日 |
THE INFLUENCE OF MINING SUBSIDENCE ON MECHANICAL COMPLSITION, BULK DENSITY AND SOIL POROSITY |
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| WANG Jian,WU Fei,GAO Yong,HE Xiao,ZHANG Yong,YAN Xi-bin,FANG Biao.THE INFLUENCE OF MINING SUBSIDENCE ON MECHANICAL COMPLSITION, BULK DENSITY AND SOIL POROSITY[J].Journal of Inner Mongolia Agricultural University(Natural Science Edition),2006,27(4):37-41. | |
| Authors: | WANG Jian WU Fei GAO Yong HE Xiao ZHANG Yong YAN Xi-bin FANG Biao |
| Institution: | 1. College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Huhhot 010019 ,China; 2. Inner Mongolia Normal University, Huhhot 010010,China; 3. Xilin Cole League Forestry Investigation Designing Group, Xilinhot 026000,China; 4. Ordos Forestry Combating Desertification Science Institute, Ordos 017000,China ; 5. Inner Mongolia Water Soil Conservation Monitoring Station, Huhhot 010019,China |
| Abstract: | The influence of mining subsidence on some soil physical and chemical properties were studied based on measuring and figuring out the soil mechanical composition,bulk density and soil porosity of subsidence area and no-subsidence area in Bulanta mining area that lies in southeast Maowusu Sandland.The result showed: the physical clay content of collapsing dune,especially in the 10cm of surface,significantly decreases;Bulk density and soil porosity in top and middle of collapsing dune is not significantly different,however,bulk density in bottom and depression of collapsing dune significantly decreases,soil porosity in bottom and depression of collapsing dune significantly increases;Bulk density and soil porosity from 0 to 40cm is not significantly different,but bulk density from 40 to 100cm significantly decreases,soil porosity from 40 to 100cm significantly increases;Slit density has little effect on bulk density and soil porosity;The depth of subsidence has little effect on bulk density at the border of subsidence area.With the increase in subsidence depth,the margin of soil bulk density in the two sides of slit increases random inside the subsidence area. |
| Keywords: | Mining subsidence windy desert area mechanical composition bulk density soil porosity |
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