1、 , , , , , , ; ; ; ; ; (1983 ) , , , , : E-mail: 1298002-7) Deformation failure mechanism and ecological prevention of gravelly clay side slopes in northern Guangxi mountainous area TANG Mingfu QUAN Hongbo CHENG Feng ZHOU Jiejun LUO Guofeng China Nonferrous Metals (Guilin) Geology and Mining Co., Lt
2、d.; Abstract Based on field geological survey data of gravelly clay side slopes in northern Guangxi mountainous area, the authors analyzed geological background, basic characteristics and formation factors of gravelly clay side slopes, and elaborated on the deformation failure mechanism of gravelly
3、clay side slopes in this area.The authors also summarized several normal engineering prevention measures.Combined with some typical engineering cases, they compared and evaluated the stability of gravelly clay soil slopes by applying limit equilibrium method.According to the deformation characterist
4、ics and stability analysis of the slopes, the authors put forward a comprehensive treatment plan which combined ecological slope protection, surface drainage, pre-stressed anchor rope, anti-slide pile, steel pipe pile and retaining wall, and the plan had reference value for other related research. K
5、eyword gravel clay slope; limit equilibrium method; slope deformation; ecology prevention; northern Guangxi mountainous area; 0 1, 2010 2015 , 3514 , 1221 37758 , , 70% , , 1 , , , , 2-5 , , 1.1 , ( ) , , , , , , , ( ) 1.2 , , , , , , , , , , , , , , , , , , , , , 2 , ( 1) , , , 1 Table 1 Classifica
6、tion of slope control measures 4-5: ( ) , 3 K36+719K37+120 2 , 1.10 , 3.1 3.1.1 , 600955.2m, , , , 3.1.2 , , , , , , , , , , 0.05g, 0.35s, , 3.1.3 , K36+719K37+120 (Q) : : , - , , , , , (Q) : (Q4) , , - , , , , , , 30%40%, , - , 1020cm, 40cm, , , , 10.031.0m 3.2 : , , , , , , / , , , , , , , , : , 0
7、.2km, , , 0.05L/s , , , 20.40m/s, 1724.5m/s, 3.5m/s, 41.33 m/ , 210m, 3.3 K36+719K37+120 2 Mohr-Coulomb , , , , , , 2 6-7 : : 3 13- 14- 15- 3 , ( 2) 2 3 Table 2 Calculation results of stability factors and residual sliding force of No.3landslide 1.061.10 , ; 1.011.04 , : , , ( , , , , , , , 3.4 K36+
8、719K37+120 6-7,9-13 3.4.1 (1) + + , , 13 14 , 10 , 5.0m; 1 1200KN , 19 9m , , , , , 1.5m, , , (2) , 6m, 1 , , 600KN, 11 , , , (3) 14 -1 , 14 14 2 , 600KN, 18 , , , , 3.4.2 : : , , ( ) , 3.4.3 , SNS , ( ) , , , , , , :SNS + + 4 (1) , , , (2) , , (3) , + + + (4) , + + + , , 1 EB/OL.http:/, 2016.06. 2
9、, . J , 2008, 29 (1) :106-112. 3 . D : , 2005. 4 . :DZ/T 0219-2006S. : , 2006. 5 . M. : , 2002. 6 , , , . K36+719K37+120 R. , 2012. 7 . J. .2005 (1) :45-47. 8 , , , . J. , 2013 (2) :83-87. 9 . J. , 2013 (2) :165-167. 10 . J. , 2016 (11) :199-201. 11 , , , . J. , 2016, 30 (1) :127-131. 12 , . , . J. , 2015, 29 (2) :252-257. 13 . J. , 2012 (4) :114-115.
