| 1. | On reason for longitudinal crack failure of the entry and its solutions
采煤平巷纵向裂缝破坏原因与处治 |
| 2. | Study on the cause of the longitudinal lining cracking in the crown of arch of double arch road tunnel
公路连拱隧道拱部纵向裂缝原因研究 |
| 3. | Causation and prevention measure of slot lengthways in prefabricating concrete board
预制砼板天棚抹灰纵向裂缝产生的原因防治措施及处理方法的探讨 |
| 4. | Its stability is destroyed with longitudinal cracks of embankment caused by asymmetric settlement of permafrost
由于阴阳坡差异引起路基不均匀沉降而导致的路面纵向裂缝病害严重影响了路基的稳定性。 |
| 5. | The longitudinal cracks have become the main subgrade distress type in the permafrost regions , and there is not a effective solution now
纵向裂缝目前已成为多年冻土地区路基病害的主要类型之一，目前还没有一种有效的解决方法。 |
| 6. | Synthesized the domestic and international current result , the paper presents the geogrids and flexible beams treating technology to ravel out the distress of the longitudinal cracks
综合国内外现有成果，本文提出了土工格栅及柔性枕梁等处治措施，从深层次解决青藏公路纵向裂缝的危害问题。 |
| 7. | Through check and inspection to the large pipe piles of zhejiang beilun power plant ' s pier , a lot of cracks were found in portrait and circle on the surface of prestressed concrete pipe piles which affect security and durability of the concrete structures directly
摘要通过对北仑电厂码头大管桩的详细调查与检测，发现混凝土大管桩多处存在纵向裂缝和周向裂缝，直接影响码头混凝土结构的安全性、耐久性。 |
| 8. | In the dam foundation restraint area , mgo can be mixed into concrete to prevent dam longitudinal crack . research on autogenous volume change of rcc mixed with mgo , and research on thermal stress compensation of darn foundation prove that rcc mixed with mgo plays a role in dam crack control
在材料措施方面，深入研究高碾压混凝土坝基础约束区采用外掺mgo措施，利用其微膨胀性能补偿坝体降温过程中产生的温度应力，以防止大坝纵向裂缝的发生。 |
| 9. | Results showed that the temperature distribution of the traditional embankment was asymmetrical ; the asymmetrical status was changed after ripped - rock revetment was installed and the soil under the ripped - rock was cooled obviously ; the ripped - rock revetment could cool embankment and adjust the temperature difference between the north - facing slope and the south - facing slope ; the ripped - rock revetment was an available technique to protect embankment from thawing settlement and longitudinal cracks in permafrost regions
结果表明：普通路基的阴阳坡两侧温度分布极不对称；铺设抛石护坡后，这种状况得到了很大改善，并且抛石护坡下土体温度明显降低；抛石护坡能够降低路基温度和调节路基阴阳坡的温度差异；抛石护坡是多年冻土区防治路基融沉和纵向裂缝病害的一种可行措施。 |
| 10. | In view of the rapid development of electric undertaking and a sharp increase of steel products consumption , the state development planning commission , the former state water resources and hydropower ministry and state energy ministry have been urging that the building of steel towers should be strictly controlled in the construction of transformer substations ; and warning that the need of the present 500kv power transmission and transformer trusses can hardly be satisfied by ordinary steel and concrete electric poles or prestressed concrete poles , which have endangered the operation and longevity of the high voltage transmitting line due to the common problem of cracks by gravity
随着电力工业建设的迅速发展，钢材的用量急剧增长，为此，国家计委，原水电部和能源部一再强调在输变电工程建设中，应从严掌握自立式铁塔的建设。然而，一般的钢筋混凝土电杆或与预应力混凝土电杆，较普遍地存在着纵向裂缝问题，严重影响了高压输电线路的安全运行及其使用寿命，已不能适应高压输电杆塔和变电构架的要求。 |
