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Gold Science and Technology ›› 2019, Vol. 27 ›› Issue (4): 522-529.doi: 10.11872/j.issn.1005-2518.2019.04.522

• Mining Technology and Mine Management • Previous Articles     Next Articles

Study on Subsidence Prediction of Inclined Orebody Cut and Fill Mining in Seabed

Jiayuan CAO1,2,3(),Fengshan MA1,2(),Jie GUO1,2,Guodong ZHANG4,Zhaoping LI4   

  1. 1. Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    2. Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China
    4. Sanshandao Gold Mine, Shandong Gold Mining (Laizhou) Co. , Ltd. , Laizhou 261442, Shandong, China
  • Received:2018-07-31 Revised:2019-01-03 Online:2019-08-31 Published:2019-08-19
  • Contact: Fengshan MA E-mail:313052383@qq.com;fsma@mail.iggcas.ac.cn

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Abstract:

Xinli mining area of Sanshandao gold mine is the only undersea metal mines in China，its mining technology demand is higher，and also have serious security problems.At present，at home and abroad，the research on the prediction of rock mass movement and surface subsidence caused by coal mining is relatively mature，and a variety of practical subsidence models and realistic surface subsidence prediction methods are formed.However，most large and medium metal mines are mined using filling methods.The effect of repeated mining not only makes the mines face new deformation and damage of the filling body，and with the continuous expansion of the scale of the filling body，the large-scale deformation and destruction of the filling body further complicates the movement of rock mass.Finally，threatening the safe production of mines.With the popularization of filling mining methods，the law of rock mass movement and surface deformation caused by filling mining has become an urgent problem to be solved.The in-depth study of this problem can provide the basis for rock movement and surface settlement for the safe mining design of submarine mines，and provide a conceptual model for the prediction of rock mass movement and surface settlement caused by mining.So，grasping mining-induced movement rules of overburden above goaf and realizing valid predictions for overburden movement are the problems to be solved for Xinli seabed gold mine.The monitoring of the displacement of rock mass is a direct means to study the movement and deformation of rock mass caused by inclined orebody mining.The movement and deformation characteristics of inclined overburden in mining by filling method are obtained by monitoring the displacement of roof of each level of the 55 lines underground in Xinli mining area.On this basis，the paper firstly proposed a cantilever mechanism to explain movement and deformation in overburden rocks triggered by cut and fill mining method in metal mines with inclined veins.Based on the analysis of the displacement monitoring data of roof，and according to the characteristics of the displacement curve，the profile functions method is proposed to predict the subsidence of inclined overburden in mining by filling method.The method consists of several exponential functions and the subsidence curve obtained by this method is very close to the measured results.And the accuracy of the prediction is all above 85%.Therefore，the research results have important guiding significance for the safe production of submarine mines.

Key words: inclined orebody, overburden movement, profile function method, subsidence prediction, submarine metal mine, mine safety, Sanshandao gold mine

CLC Number: 

  • TD325

Fig.1

Distribution map of gold deposit in Xinli mining area"

Fig.2

Open-up distribution map of shallow middle section in the northeastern part of Xinli mining area"

Fig.3

Geological section of 31 line fractured alteration zone"

Fig.4

Layout diagram of monitoring points in each level"

Fig.5

Underground subsidence monitoring curve of Xinli mining area (settlement value increases by 100 times)"

Fig.6

Movement and deformation mechanism of overlying strata triggered by cut and fill mining method in inclined mining"

Fig.7

Schematic of profile function"

Table 1

Parameters of subsidence prediction curve"

参数 中段/m
-200 -240 -320 -400 -480
x 01 -18.83 -10.28 -13.18 2.124 0.857
B 1 143.6 194 186.6 523.4 347
D 1 37.27 51.73 24.85 134.3 3.941
x 02 -28.38 -9.577 -7.194 0.5013 1.698
B 2 268.7 335.1 242.5 310.2 229.5
D 2 132.6 134.6 42.97 493.3 7.9e+5
x 03 21.76 11.96 -16.07 -12.31 -19.8
B 3 499.2 527.8 303.8 239.5 57.83
D 3 14.86 16.13 164.9 66.91 30.14
x 04 - - - - -4.921
B 4 - - - - 138.1
D 4 - - - - 29.5

Fig. 8

Comparison of predicted settlement curve and measured data"

1 杜国栋，李晓，丁恩保 .矿体倾角对地表沉降的影响研究［J］.金属矿山，2006（2）：9-11.
Du Guodong ， Li Xiao ， Ding Enbao .Effect of dip angle of orebody on surface subsidence［J］.Metal Mine，2006（2）：9-11.
2 白义如，谷志孟，白世伟 .程潮铁矿东区地下采矿引起地表沉降和岩层移动初探［J］.岩石力学与工程学报，2002，21（3）：340-342.
Bai Yiru ， Gu Zhimeng ， Bai Shiwei .Primary study on ground surface subsidence and rockmass movement in east area of Chenchao iron mine due to underground mining［J］.Chinese Journal of Rock Mechanics and Engineering，2002，21（3）：340-342.
3 Tomaz A ， Goran T .Prediction of subsidence due to underground mining by artificial neural networks［J］.Computers and Geosciences，2003，5：20-29.
4 Whittaker B N .Surface subsidence aspects of room and pillar mining［J］.Mining Department Magazine，1985，37：59-67.
5 Li W X .Fuzzy models for estimation of surface ground subsidence［J］.Systems Science and Mathematical Sciences，1990，3：41-52.
6 Asadi A ， Shakhriar K ， Goshtasbi K .Profiling function for surface subsidence prediction in mining inclined coal seams ［J］.Journal of Mining Science，2004，40：142-146.
7 Zhou D W ， Wu K ， Miao X X ，et al .Combined prediction model for mining subsidence in coal mining areas covered with thick alluvial soil layer［J］.Bulletin Engineering Geology and the Environment，2018，77（1）：283-304.
8 González Nicieza C ， Álvarez Fernández M I ， Menéndez Díaz A ，et al .The new three-dimensional subsidence influence function denoted by n-k-g ［J］.International Journal of Rock Mechannics and Mining Sciences，2005，42（3）：372-387.
9 Sheorey P R ， Loui J P ， Singh K B ，et al .Ground subsidence observations and a modified influence function method for complete subsidence prediction［J］.International Journal of Rock Mechanics and Mining Sciences，2000，37（5）：801-818.
10 Singh R P ， Yadav R N .Prediction of subsidence due to coal mining in Raniganj coalfield，West Bengal，India［J］.Engineering Geology，1995，39（1/2）：103-111.
11 Whittaker B N ， Reddish D J .Subsidence Ocurrence，Prediction and Control［M］. Amsterdam：Elsevier，1989.
12 Deng J ， Bian L .Investigation and characterization of mining subsidence in Kaiyang phosphorus mine［J］.Journal of Central South University of Technology，2007，14（3）：413-417 .
13 Jarosz A ， Karmis M ， Sroka A .Subsidence development with time experiences from longwall operations［J］.Geotechnical and Geological Engineering，1990，8（3）：261-273.
14 Liang Q ， Wen X ， He G .Study on calculation methods for surface subsidence caused by water loss of clay［J］.Journal of Mineral Safety and Engineering，2007，24：105-108.
15 Díez R R ， Álvarez J T .Hypothesis of the multiple subsidence trough related to very steep and vertical coal seams and its prediction through profile functions［J］.Geotechnical and Geological Engineering，2000，18（4）：289-311.
16 Kratzsch H .Mining Subsidence Engineering［M］.Berlin Heidelberg：Springer，1983.
17 戴华阳，王金庄，蔡美峰 .岩层与地表移动的矢量预计法［J］.煤炭学报，2002，27（5）：473-478.
Dai Huayang ， Wang Jinzhuang ， Cai Meifeng .Extraction-vectorized prediction method for rock and surface movement［J］.Journal of China Coal Society，2002，27（5）：473-478.
18 李永树 .不规则形状地下空间开挖条件下地表沉陷预计方法研究［J］.测绘工程，2001，10（3）：13-16.
Li Yongshu .Method for prediction of surface subsidence in excavating underground rooms of irregular shape［J］.Engineering of Surveying and Mapping，2001，10（3）：13-16.
19 张华兴，仲伟林 .受断层影响的地表移动计算［J］.煤炭学报，1995，20（2）：163-166.
Zhang Huaxing ， Zhong Weilin .Calculation of surface movement incurred by fault ［J］.Journal of China Coal Society，1995，20（2）：163-166.
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