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Sains
Malaysiana 46(11)(2017): 2179-2186 http://dx.doi.org/10.17576/jsm-2017-4611-19 Internal Characteristics of Loose
Solid Source of Debris Flow in Zhouqu SHUFANG FAN* 1School of Civil Engineering and
Mechanics, Lanzhou University, Lanzhou 730000, China 2Monitoring Center of Mine Resources
and Geological Environment, Shaoguan 512026, China Received:
23 January 2017/Accepted: 17 May 2017 ABSTRACT In this paper, with debris flow in Zhouqu as the research object,
combined with experiments such as cation exchange capacity (CEC),
mineral chemical composition and water quality analysis, relation
between water and salt in solid source forming debris flow was
studied via soil column leaching test and soluble salt analysis,
and internal characteristics of debris flow was accordingly
showed. It was found that, the soil was loose, and the content
of gravel and sand was high, and the content of fine particle
was low. The soluble contents at the slope of the accumulation
body were described as, collapsed accumulation body > landslide
accumulation body, slope toe > slope top, gentle slope >
steep slope, also related to length of the slope. The results
indicated that accumulations released a large number of base
ion after intense weathering, which migrated with water, concentrated
and enriched at the slope toe. Saline soil with high salt content
collapsed when encountering water and then formed mudflow, thus
becoming the internal power to trigger and initiate debris flow
to some extent. Keywords: Debris flow; internal feature; salt-water relation; solid source;
Zhouqu ABSTRAK Dalam kajian ini, dengan menggunakan aliran puing di Zhouqu sebagai
objek kajian serta uji kaji seperti keupayaan pertukaran kation
(CEC), komposisi kimia mineral dan analisis kualiti air, perhubungan
antara air dengan garam dalam sumber pepejal aliran puing dikaji
melalui ujian larut lesap turus tanah, analisis garam larut
dan ciri dalaman aliran puing telah dikemukakan. Didapati bahawa
kandungan pelarut garam dalam kecerunan jasad tumpukan telah
dinyatakan sebagai, keruntuhan jasad tumpukan > jasad tumpukan
gelongsoran tanah > hujung cerun > atas cerun, cerun landai
> cerum curam yang juga berkaitan dengan panjang cerum. Keputusan
menunjukkan bahawa tumpukan mengeluarkan bilangan ion asas yang
besar selepas luluhawa pesat, yang bergerak dengan air, tertumpu
dan diperkaya pada hujung cerun. Tanah masin dengan kandungan
garam yang tinggi runtuh ketika bertemu air dan kemudian membentuk
aliran lumpur hingga ke satu tahap menjadi kuasa dalaman untuk
menjadi penyebab dan memulakan aliran puing. Kata kunci: Aliran puing; ciri dalaman;
hubungan garam-air; sumber pepejal; Zhouqu REFERENCES Chen, Z.X., Wang, R.,
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email: fan0931@126.com
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