【摘要】 在大断面三(四)岔门交岔点、硐室的施工中,布置三角形组合锚索,能有效地控制顶板围岩的稳定,改变锚杆(索)的受力状态,获取良好的支护效果。更多还原

【Abstract】 Under the construction of the crossing of large section of the three(four)sides-open crossing or equipment cote of large section to disposal the triangle combination steel rope,it can keep the roof stability and change the states of the force of the bolt and steel rope.That Result in a good effect on the shorning.更多还原