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首页 » 新闻中心 » 石材知识

天然石材矿山开采的两大分类

作者: 日期: 2016-07-08 14:21:34 人气: - 评论: 0

矿山开采。分为人工开采和爆破开采两类。爆破开采又有微爆破开采和大爆破开采两类。大理石、沿海一带的花岗石(沿海一带花岗石比较软)常常用人工开采或微爆破开采，四川一带的花岗石(比较坚硬)一般用大爆破开采。大爆破开采材料利用率很低，大部分都在爆破中碎裂了，因此除非很硬的石材，一般不会用这种方法。　　

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  1. 模型: /data/htdocs/222_lanhui/twcms/model/
  2. 视图: /data/htdocs/222_lanhui/twcms/view/default/article_show.htm
  3. 控制器: /data/htdocs/222_lanhui/twcms/control/show_control.class.php
  4. 日志目录: /data/htdocs/222_lanhui/twcms/runtime/logs/
  5. 当前页面: /data/htdocs/222_lanhui/index.php
  6. 当前时间: 2025-05-01 18:33:32
  7. 当前网协: 3.140.188.57
  8. 请求路径: /shicaibaike/46.html
  9. 运行时间: 0.0177
  10. 内存开销: 1.8 MB
  1. #0 [time:0.0001s] SET character_set_connection=utf8, character_set_results=utf8, character_set_client=binary, sql_mode=''
  2. #1 [time:0.0002s] SELECT * FROM tw_runtime WHERE k='cfg' LIMIT 1 [explain type: const | rows: 1]
  3. #2 [time:0.0002s] SELECT * FROM tw_runtime WHERE k='cate_10' LIMIT 1 [explain type: const | rows: 1]
  4. #3 [time:0.0002s] SELECT * FROM tw_cms_article WHERE id='46' LIMIT 1 [explain type: const | rows: 1]
  5. #4 [time:0.0002s] SELECT * FROM tw_cms_article_data WHERE id='46' LIMIT 1 [explain type: const | rows: 1]
  6. #5 [time:0.0002s] SELECT id FROM tw_cms_article WHERE cid='10' AND id<'46' ORDER BY id DESC LIMIT 0,1 [explain type: range | rows: 31]
  7. #6 [time:0.0001s] SELECT * FROM tw_cms_article WHERE id='43' [explain type: const | rows: 1]
  8. #7 [time:0.0001s] SELECT id FROM tw_cms_article WHERE cid='10' AND id>'46' ORDER BY id ASC LIMIT 0,1 [explain type: range | rows: 25]
  9. #8 [time:0.0001s] SELECT * FROM tw_cms_article WHERE id='47' [explain type: const | rows: 1]
  10. #9 [time:0.0002s] SELECT * FROM tw_kv WHERE k='navigate' LIMIT 1 [explain type: const | rows: 1]
  11. #10 [time:0.0002s] SELECT tagid,id FROM tw_cms_article_tag_data WHERE tagid='37' ORDER BY id DESC LIMIT 0,10 [explain type: ref | rows: 1]
  12. #11 [time:0.0001s] SELECT * FROM tw_cms_article_tag_data WHERE tagid='37' AND id='46' [explain type: const | rows: 1]
  13. #12 [time:0.0002s] SELECT id FROM tw_cms_article_views WHERE cid='10' ORDER BY views DESC LIMIT 0,10 [explain type: ref | rows: 57]
  14. #13 [time:0.0002s] SELECT * FROM tw_cms_article_views WHERE id='75' OR id='71' OR id='30' OR id='57' OR id='72' OR id='58' OR id='61' OR id='17' OR id='47' OR id='51' [explain type: ALL | rows: 81]
  15. #14 [time:0.0003s] SELECT * FROM tw_cms_article WHERE id='75' OR id='71' OR id='30' OR id='57' OR id='72' OR id='58' OR id='61' OR id='17' OR id='47' OR id='51' [explain type: range | rows: 10]
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  2. #action => index
  3. #cid => 10
  4. #id => 46
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      2. #1 /data/htdocs/222_lanhui/twcms/kongphp/kongphp.php
      3. #2 /data/htdocs/222_lanhui/twcms/config/config.inc.php
      4. #3 /data/htdocs/222_lanhui/twcms/kongphp/base/base.func.php
      5. #4 /data/htdocs/222_lanhui/twcms/kongphp/base/core.class.php
      6. #5 /data/htdocs/222_lanhui/twcms/kongphp/base/debug.class.php
      7. #6 /data/htdocs/222_lanhui/twcms/kongphp/base/log.class.php
      8. #7 /data/htdocs/222_lanhui/twcms/kongphp/base/model.class.php
      9. #8 /data/htdocs/222_lanhui/twcms/kongphp/base/view.class.php
      10. #9 /data/htdocs/222_lanhui/twcms/kongphp/base/control.class.php
      11. #10 /data/htdocs/222_lanhui/twcms/kongphp/db/db.interface.php
      12. #11 /data/htdocs/222_lanhui/twcms/kongphp/db/db_mysql.class.php
      13. #12 /data/htdocs/222_lanhui/twcms/kongphp/cache/cache.interface.php
      14. #13 /data/htdocs/222_lanhui/twcms/kongphp/cache/cache_memcache.class.php
      15. #14 /data/htdocs/222_lanhui/twcms/plugin/editor_um/conf.php
      16. #15 /data/htdocs/222_lanhui/twcms/plugin/tw_links/conf.php
      17. #16 /data/htdocs/222_lanhui/twcms/runtime/twcms_control/parseurl_control.class.php
      18. #17 /data/htdocs/222_lanhui/twcms/runtime/twcms_model/runtime_model.class.php
      19. #18 /data/htdocs/222_lanhui/twcms/runtime/twcms_control/show_control.class.php
      20. #19 /data/htdocs/222_lanhui/twcms/runtime/twcms_model/category_model.class.php
      21. #20 /data/htdocs/222_lanhui/twcms/runtime/twcms_model/cms_content_model.class.php
      22. #21 /data/htdocs/222_lanhui/twcms/runtime/twcms_view/default,article_show.htm.php
      23. #22 /data/htdocs/222_lanhui/twcms/runtime/twcms_model/cms_content_data_model.class.php
      24. #23 /data/htdocs/222_lanhui/twcms/runtime/twcms_model/kv_model.class.php
      25. #24 /data/htdocs/222_lanhui/twcms/runtime/twcms_model/cms_content_tag_data_model.class.php
      26. #25 /data/htdocs/222_lanhui/twcms/runtime/twcms_model/cms_content_views_model.class.php
      27. #26 /data/htdocs/222_lanhui/twcms/kongphp/tpl/sys_trace.php