Control of Methane in Gob and Bleeders by the Cross-measure Borehole Technique.
Authors
Cervik J; King RL
Source
Proc 14th Ann Inst on Coal Min H S & Res, Blacksburg, Virginia, 1983 Aug; :139-148
Link
NIOSHTIC No.
10003196
Abstract
In Europe and the United Kingdom, small-diameter drainage holes (cross-measure boreholes) are drilled into strata overlying a longwall to control methane in the gob and to prevent it from mixing with the ventilation air. These drainage holes are connected to an underground pipeline that is maintained under a partial vacuum by surface vacuum pumps. Bureau of Mines tests in the Upper Kittanning coalbed utilizing the cross-measure borehole system demonstrated the capture of 50 pct of the total methane generated by the mining operation. The angle of the hole above horizontal, depth of penetration of the hole into the gob, and location of the pipeline and collar of the hole are important parameters affecting the performance of the cross-measure borehole technique.
Publication Date
19830801
Document Type
OP;
Fiscal Year
1983
Identifying No.
OP 77-83
NIOSH Division
PRC;
Source Name
Proc. 14th Ann. Inst. on Coal Min. H. S. & Res., Blacksburg, Virginia, Aug. 23-25, 1983, PP. 139-148
Links with this icon indicate that you are leaving the CDC website.
The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
You will be subject to the destination website's privacy policy when you follow the link.
CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.
For more information on CDC's web notification policies, see Website Disclaimers.
CDC.gov Privacy Settings
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.
Thank you for taking the time to confirm your preferences. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page.