证据权法在新疆卡拉麦里金矿带断层与金矿化空间定量评价中的应用

曹小红; 弓小平; 韩琼; 孟和

doi:10.12090/j.issn.1006-6616.2019.25.S1.027

证据权法在新疆卡拉麦里金矿带断层与金矿化空间定量评价中的应用

doi: 10.12090/j.issn.1006-6616.2019.25.S1.027

1.
新疆工程学院矿业工程与地质学院, 新疆乌鲁木齐 830000
2.
新疆大学地质与矿业工程学院, 新疆乌鲁木齐 830011
3.
新疆地质调查院, 新疆乌鲁木齐 830000

基金项目:

国家自然科学基金项目 41462004

新疆维吾尔自治区教育厅高校科研计划项目 XJEDU2016S088

新疆维吾尔自治区"十三五"地质工程重点专业 20161812

详细信息

作者简介:
曹小红(1985-), 女, 硕士, 实验师, 从事地质教学工作。E-mail:512197696@qq.com

中图分类号: P618.51
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- 被引次数: 0
出版历程
- 刊出日期: 2019-05-01

APPLICATION OF EVIDENCE WEIGHT METHOD IN QUANTITATIVE EVALUATION OF FAULTS AND GOLD MINERALIZATION IN KALAMAILI GOLD BELT, XINJIANG

1.
College of Mining Engineering and Geology, Xinjiang Institute of Engineering, Urumqi 830000, Xinjiang, China
2.
College of Geology and Mining Engineering, Xinjiang University, Urumqi 830011, Xinjiang, China
3.
Geological Survey Institute of Xinjiang, Urumqi 830000, Xinjiang, China

摘要

摘要: 新疆东准噶尔卡拉麦里金矿带是新疆重要的金成矿带之一，相关学者开展了大量的生产和科研工作，取得了丰硕的找矿成果，积累了大量的研究。近年来，随着向深部探测工作的兴起和成矿预测方法的不断成熟，由定性研究向定量研究成为一种必然选择。研究在以往科研成果综合研究的基础上，建立基于ArcGis平台的数据库，应用证据权法开展卡拉麦里金矿带断层与金矿化空间定量评价研究，研究表明断层距离和断层密度为重要的证据权因子，断层距离在0~1500 m范围内，成矿作用最强，随着距离的增大，成矿作用变弱。断层密度在0.26~0.66为中高有利成矿区域。该研究成果对卡拉麦里金矿带深部及外围的找矿工作具有重要意义。
- 证据权法 /
- 断层 /
- 金矿化 /
- 空间定量评价
Abstract: The Kalamaili gold belt in East Junggar is one of the important gold metallogenic belts in Xinjiang. Relevant scholars have carried out a large number of production and scientific research work, and achieved fruitful results in ore-finding, and accumulated a lot of research. In recent years, with the rise of deep exploration and the maturity of mineralization prediction methods, qualitative research has become an inevitable choice. Based on the previous comprehensive research, this research establishes a database platform based on ArcGis platform, and uses the evidence weight method to carry out quantitative evaluation of fault and gold mineralization space. The results show that the fault distance and density are important evidence weight factors. When the fault distance is in the range of 0~1500 m, the mineralization is the strongest. As the distance increases, the mineralization becomes weaker; when the fault density is between 0.26 and 0.66, it is a medium-high favorable ore-forming area. The research results are of great significance for the prospecting work in the deep and peripheral areas of the Kalamaili gold belt.
- evidence weight method /
- fault /
- gold mineralization /
- spatial quantitative evaluation

HTML全文

图 1 新疆卡拉麦里金矿带地质矿产简图

1—新生界；2—白垩纪；3—侏罗纪；4—三叠纪；5—二叠纪；6—石炭纪；7—泥盆纪；8—志留纪；9—石炭纪花岗岩；10—石炭纪超镁铁质岩；11—金矿；12—铜矿

Figure 1. A brief map of geological minerals in the Kalamaili gold belt of Xinjiang

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图 2 断层密度与金矿成矿有利度分析结果图

Figure 2. Analysis of fault density and gold mineralization favorability

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图 3 断层距离与金矿成矿有利度分析结果图

Figure 3. Analysis of fault distance and gold mineralization favorability

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表 1 卡拉麦里金矿与断层密度空间关系定量评价表

Table 1. Quantitative evaluation table for spatial relationship between the Kalamaili gold deposit and fault density

级别	面积/km²	单元数	矿床数	W+正权值	W-负权值	反差	学生化反差	综合权重
0~0.13	22868	22868	4	-0.0002	6.3694	-6.3695	-0.4504	-2.281600
0.13~0.26	3228	3228	11	1.0536	-2.2816	3.3352	6.4347	1.053600
0.26~0.40	2490	2490	8	1.1721	-1.0915	2.2636	7.5416	1.053600
0.40~0.53	2010	2010	10	1.3509	-0.7550	2.1059	7.8334	1.053600
0.53~0.66	1238	1238	14	1.4893	-0.4617	1.9510	7.3406	1.053600
0.66~0.80	961	961	4	1.1336	-0.1473	1.2809	3.8156	1.053600
0.80~0.93	607	607	3	1.3034	-0.0953	1.3987	3.4602	1.053600
0.93~1.06	330	330	2	1.5291	-0.0564	1.5855	3.0484	1.053600
1.06~1.20	145	145	1	1.8800	-0.0298	1.9098	2.6396	1.053600
1.20~1.33	35	35	1	2.8448	-0.0164	2.8612	2.7962	1.053600

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表 2 卡拉麦里金矿与断层距离空间关系定量评价表

Table 2. Quantitative evaluation table of spatial relationship between the Kalamaili gold deposit and fault distance

级别/单位	面积/km²	单元数	矿床数	W+正权值	W-负权值	反差	学生化反差
0~500	5162	5162	28	-0.0002	5.5629	-5.5631	-0.3934
500~1000	2618	2618	11	-0.2442	0.3514	-0.5956	-2.2619
1000~1500	2016	2016	10	-0.3982	0.2722	-0.6704	-2.3920
1500~2000	1435	1435	3	-0.8278	0.2700	-1.0978	-3.0238
2000~2500	1286	1286	4	-0.9228	0.1923	-1.1151	-2.5840
2500~3000	925	925	2	-1.6271	0.1579	-1.7850	-2.4794
3000~3500	956	956	0	0.0000	0.0000	0.0000	0.0000
3500~4000	774	774	0	0.0000	0.0000	0.0000	0.0000

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表 3 卡拉麦里金矿与断层方向空间关系定量评价表

Table 3. Quantitative evaluation table for spatial relationship between the Kalamaili gold deposit and fault direction

级别	面积/km²	单元数	矿床数	W+正权值	W-负权值	反差	学生化反差
北(0-22.5)	2182	2182	12	-0.0002	5.5629	-5.5631	-0.3934
北东	2403	2403	10	-0.0768	0.3655	-0.4424	-1.3613
东	1077	1077	1	-0.1176	0.2284	-0.3460	-1.2757
南东	700	700	2	-0.0382	0.0610	-0.0992	-0.3687
南	2091	2091	11	-0.0204	0.0276	-0.0481	-0.1809
南西	2465	2465	8	-0.1555	0.1085	-0.2640	-0.9737
西	1313	1313	4	-0.1505	0.0530	-0.2035	-0.6621
北西	765	765	2	-0.1177	0.0264	-0.1440	-0.4136
北(337.5-360)	2176	2176	8	-0.0391	0.0064	-0.0455	-0.1192

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