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Sains Malaysiana 46(11)(2017): 2049-2059 http://dx.doi.org/10.17576/jsm-2017-4611-05 Environmental Geological Features of the Red
Clay Surrounding Rock Deformation under the Influence of Rock-Fracture
Water (Ciri
Geologi Persekitaran Lempung Merah Mengelilingi Canggaan Batuan
di bawah Pengaruh Retakan- Batuan Air) JIADING WANG1*, TIANFENG GU1, JIANBIN WANG1,
YUANJUN XU1, PENG CHEN1 & MUHAMMAD AQEEL ASHRAF2 1State Key Laboratory of Continental Dynamics, State Key Laboratory of Continental
Dynamics Northwest
University, Xi’an 710069, China 2International Water, Air & Soil
Conservation Society, 59200 Kuala Lumpur, Federal Territory Malaysia Received:
1 February 2017/Accepted: 4 June 2017 ABSTRACT The development degree of fissure water in underground rock is a great
trouble to the construction of railway tunnel, which will cause
a series of environmental geological problems. Take the surrounding
rock-section of the typical red clay in Lvliang-Mt. railway
tunnel below the underground water level as an example, several
aspects about the red clay surrounding rock will be researched,
including pore water pressure, volume moisture content, stress
of surrounding rock, vault subsidence and horizontal convergence
through the field monitoring. Taking into account the importance
of railway tunnel engineering, the large shear test of red clay
was carried out at the construction site specially and the reliable
situ shear strength parameters of surrounding rock will be
obtained. These investigations and field tests helped to do
a series of work: Three dimensional finite element numerical
model of railway tunnel will be established, the deformation
law of the red clay surrounding rock will be investigated, respectively,
for the water-stress coupling effect and without considering
it, the variation of the pore water pressure during excavation,
the influence degree about the displacement field and stress
field of water-stress coupling on red clay-rock will be discussed
and the mechanism of the surrounding rock deformation will be
submitted. Finally, the paper puts forward the feasible drainage
scheme of the surrounding rock and the tunnel cathode. The geological
environment safety of tunnel construction is effectively protected. Keywords: Deformation features; environmental geological
problems; railway tunnel; red clay surrounding rock; rock-fracture
water ABSTRAK Tahap perkembangan rekahan air di dalam batuan bawah tanah merupakan masalah
besar untuk pembinaan landasan terowong yang akan menyebabkan
satu siri masalah geologi alam sekitar. Sebagai contoh, lihat
pada bahagian batuan sekeliling tanah liat tipikal di terowong
landasan Lvliang-Mt. di bawah paras air bawah tanah, beberapa
aspek tentang tanah liat merah di sekeliling batuan akan diteliti,
termasuk tekanan air pori, isi padu kandungan lembapan, tekanan
batuan keliling, penurunan vault dan konvergensi mendatar melalui
pemantauan lapangan. Dengan mengambil kira kepentingan kejuruteraan
terowong keretapi, ujian ricih besar tanah liat merah dilakukan
di tapak pembinaan khasnya dan parameter kekuatan ricih situ yang boleh dipercayai di sekitar batuan akan diperoleh.
Kajian dan ujian lapangan ini membantu melakukan satu siri kerja:
Tiga elemen dimensi terhingga unsur model terowong kereta api
akan ditubuhkan, undang-undang canggaan tanah liat merah di
sekeliling batu akan dikaji untuk tekanan gandingan tekanan
air dan tanpa mempertimbangkannya, variasi tekanan air liang
semasa penggalian, darjah pengaruh tentang medan anjakan dan
tegasan gandingan tekanan air pada tanah liat merah akan dibincangkan
dan mekanisme canggaan batuan di sekeliling akan dikemukakan.
Kesimpulannya, kertas ini mengemukakan skim saliran yang sesuai
di sekitar batu dan katod terowong. Keselamatan geologi alam
sekitar untuk pembinaan terowong dilindungi dengan berkesan. Kata kunci: Air batu-pecah; ciri ubah bentuk;
landasan terowong; masalah geologi alam sekitar; tanah liat
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Bulletin of Soil Water Conservation 7: 21-28. *Corresponding author; email: wangjd@nwu.edu.cn
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