煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】

Brand: 煤炭工业出版社    Sold By: EM China
煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】
煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】
煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】
煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】

煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】

Brand: 煤炭工业出版社    Sold By: EM China
$45.61 In Stock
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煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】

煤矿井下瓦斯抽采(放)钻孔施工新技术【放心购买】

$45.61

内容简介
Product Details

内容简介
《煤矿井下瓦斯抽采(放)钻孔施工新技术》内容共分六章。第一章绪论,介绍了煤矿井下瓦斯抽采(放)的意义、钻孔的分类、钻孔施工的条件;第二章煤矿井下钻孔设备、钻具新进展,较详细地介绍了煤炭科学研究总院西安研究院近年来研制的多种全液压坑道钻机的结构性能以及坑道钻机性能检测试验台、矿用外平摩擦焊钻杆、插接式螺旋钻杆、胎体式PDC钻头的研制及应用情况;第三章高位瓦斯抽采(放)钻孔施工技术以部分煤矿企业为代表,分析高位瓦斯抽采(放)钻孔的定向工艺原理、常用装备机具的选择和施工状况;第四章本煤层瓦斯抽放钻孔施工技术介绍不同煤层赋存条件下的瓦斯抽采(放)方式和钻孔施工技术,其中既包括适用于硬煤的沿煤层长钻孔定向钻进技术,也包括适用于软煤的螺旋钻杆钻进、三棱形钻杆钻进和空气钻进等方法的使用情况;第五章介绍的穿层钻孔施工技术是用于治理松软突出煤层瓦斯和抽采(放)邻近层瓦斯的有效方法之一;第六章煤矿井下其他钻孔施工技术介绍在煤矿井下的勘探孔、替代巷道的大直径钻孔、探放水孔、注浆钻孔、管棚钻孔等方面的施工技术及应用实例。
目  录
第一章绪论
第一节煤矿井下瓦斯抽采(放)的意义
第二节煤矿井下瓦斯抽采(放)钻孔及其他钻孔的分类
第三节煤矿井下钻孔施工的条件
第二章煤矿井下钻孔设备、钻具新进展
第一节中深孔全液压坑道钻机的研制
第二节近水平深孔全液压坑道钻机的研制
第三节全液压坑道履带钻机的研制
第四节全液压坑道钻机性能检测试验台的研制
第五节矿用外平摩擦焊钻杆的研制
第六节矿用插接式螺旋钻杆的研制
第七节胎体式PDC钻头的研制
第三章高位瓦斯抽采(放)钻孔施工技术
第一节陕西地区高位长深瓦斯抽采(放)钻孔的施工
商品详情

基本信息

书名:煤矿井下瓦斯抽采(放)钻孔施工新技术

作者:石智军著;胡少韵著;姚宁平著

出版社:煤炭工业出版社

出版日期:2008-11-01

ISBN:9787502034108

定价:50.00

字数:277000

页码:277

版次:1

装帧:平装

开本:16开

商品重量:0.00kg

注意:以上信息来源于网络,仅供参考!!!

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

内容简介
《煤矿井下瓦斯抽采(放)钻孔施工新技术》内容共分六章。第一章绪论,介绍了煤矿井下瓦斯抽采(放)的意义、钻孔的分类、钻孔施工的条件;第二章煤矿井下钻孔设备、钻具新进展,较详细地介绍了煤炭科学研究总院西安研究院近年来研制的多种全液压坑道钻机的结构性能以及坑道钻机性能检测试验台、矿用外平摩擦焊钻杆、插接式螺旋钻杆、胎体式PDC钻头的研制及应用情况;第三章高位瓦斯抽采(放)钻孔施工技术以部分煤矿企业为代表,分析高位瓦斯抽采(放)钻孔的定向工艺原理、常用装备机具的选择和施工状况;第四章本煤层瓦斯抽放钻孔施工技术介绍不同煤层赋存条件下的瓦斯抽采(放)方式和钻孔施工技术,其中既包括适用于硬煤的沿煤层长钻孔定向钻进技术,也包括适用于软煤的螺旋钻杆钻进、三棱形钻杆钻进和空气钻进等方法的使用情况;第五章介绍的穿层钻孔施工技术是用于治理松软突出煤层瓦斯和抽采(放)邻近层瓦斯的有效方法之一;第六章煤矿井下其他钻孔施工技术介绍在煤矿井下的勘探孔、替代巷道的大直径钻孔、探放水孔、注浆钻孔、管棚钻孔等方面的施工技术及应用实例。
目  录
第一章绪论
第一节煤矿井下瓦斯抽采(放)的意义
第二节煤矿井下瓦斯抽采(放)钻孔及其他钻孔的分类
第三节煤矿井下钻孔施工的条件
第二章煤矿井下钻孔设备、钻具新进展
第一节中深孔全液压坑道钻机的研制
第二节近水平深孔全液压坑道钻机的研制
第三节全液压坑道履带钻机的研制
第四节全液压坑道钻机性能检测试验台的研制
第五节矿用外平摩擦焊钻杆的研制
第六节矿用插接式螺旋钻杆的研制
第七节胎体式PDC钻头的研制
第三章高位瓦斯抽采(放)钻孔施工技术
第一节陕西地区高位长深瓦斯抽采(放)钻孔的施工
商品详情

基本信息

书名:煤矿井下瓦斯抽采(放)钻孔施工新技术

作者:石智军著;胡少韵著;姚宁平著

出版社:煤炭工业出版社

出版日期:2008-11-01

ISBN:9787502034108

定价:50.00

字数:277000

页码:277

版次:1

装帧:平装

开本:16开

商品重量:0.00kg

注意:以上信息来源于网络,仅供参考!!!

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

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